RTX 5080 vs 4080 2026: 15% Faster, PhysX Broken

Here is the whole comparison in one sentence: NVIDIA charges you the same $999 the RTX 4080 Super already cost, hands you roughly ten to fifteen percent more frames, and quietly removes the ability to run a decade of PhysX games you may actually own. Everything after this is footnotes — but they are good footnotes, and one of them is about a graphics card from 2010 beating a 2025 flagship, so stay.

The GeForce RTX 5080 is a Blackwell card that launched on 30 January 2025 at a $999 Founders Edition price. The RTX 4080 is the Ada Lovelace card it replaces: the original shipped in November 2022 at $1,199, and its $999 Super refresh arrived in January 2024. Every 2026 buying guide still lines these two up as "newer $999 class" versus "prior-gen $1,199 launch model," which is technically true and almost completely beside the point. The point is what you get for the money, whether the old card is quietly the smarter purchase, and — because this is a site for people who still keep a disc of Mafia II in a drawer — what the new architecture breaks.

We are going to be precise about all of it: the specs, six benchmark sources that cannot agree with each other, the missing-ROPs defect, the 32-bit PhysX execution, the memory-crunch pricing that has the entire 50-series stuck in permanent paper-launch mode, and a migration guide for going in either direction. Deadpan, sourced, no NVIDIA press-release adjectives. Let's proceed.

The Two Cards, Stated Plainly

Before the tables, understand exactly what sits on each side of the versus. This is not "new good, old bad." It is two very similar pieces of silicon separated by two years, one memory standard, and one deliberately deprecated feature.

The RTX 5080 (Blackwell)

The RTX 5080 is the second card down NVIDIA's Blackwell gaming stack, beneath the RTX 5090 and above the 5070 Ti. It ships with 10,752 CUDA cores across 84 streaming multiprocessors, 16GB of GDDR7 on a 256-bit bus, a 360W board-power rating, and a single 16-pin (12V-2×6) power connector. It launched on 30 January 2025 at a $999 Founders Edition MSRP — a number NVIDIA clearly chose to echo the 4080 Super rather than the original 4080. On paper it is a clean, modern card: PCIe 5.0, DisplayPort 2.1, the full DLSS 4 feature set including Multi Frame Generation, and the best performance-per-watt NVIDIA has ever shipped in this class. On the shelf it has spent most of its life as a rumor with a price tag, for reasons we get to in the pricing section.

The RTX 4080 (Ada Lovelace)

The RTX 4080 is the card it replaces, and it comes in two flavors that both matter here. The original RTX 4080 launched on 16 November 2022 at $1,199 with 9,728 CUDA cores and 16GB of GDDR6X. Fourteen months later, on 31 January 2024, NVIDIA released the RTX 4080 Super — 10,240 cores, faster 23 Gbps memory, and, critically, a $999 price that undercut the original by two hundred dollars. The Super is the card that actually competes with the 5080 on price, and it is the card nearly every serious reviewer benchmarked the 5080 against. When this article says "the 4080," it means the Ada generation broadly; when the distinction matters — and it matters a great deal — it says "Super" explicitly.

The Framing Trap: $999 vs $1,199

Every buying guide that frames this as "$999 newer card vs $1,199 older card" is quietly stacking the deck. That $1,199 figure is the November 2022 launch price of a card that was superseded by a $999 version in early 2024. Comparing a 2025 card's MSRP against a 2022 launch price flatters the newcomer by two hundred dollars nobody informed has paid since the Super shipped. Hold that thought; it is the single most important thing to understand about the RTX 5080's "value," and we return to it with numbers. If you are weighing the tier above instead, our RTX 5090 teardown covers exactly how much further four thousand dollars gets you in 2026, which is: not four thousand dollars' worth.

Specs Face-Off: Blackwell vs Ada

Here is everything side by side. Read it once and the entire benchmark section stops being a surprise.

The Full Spec Table

Where the original 4080 and the 4080 Super diverge, the Super's figure is noted in parentheses, because the Super is your real-world alternative — not a museum piece.

What Actually Changed: Cores, Clocks, Memory

Read the table and the story writes itself. Both dies are built on the same TSMC 4N-class process. Both are roughly the same physical size — about 378 mm² for Blackwell's GB203, about 379 mm² for Ada's AD103 — and both carry roughly 45 billion transistors. That is not a rounding artifact: NVIDIA did not shrink the node and did not meaningfully grow the silicon budget. The 5080 gets about 10.5% more CUDA cores (10,752 versus 9,728), a slightly higher boost clock (~2.62 versus ~2.51 GHz), and — the one genuinely large delta — a jump from GDDR6X to GDDR7 that lifts memory speed from 22.4 Gbps to 30 Gbps. When a generational gap is built from clocks and memory rather than from a new node and a bigger die, you should expect an uplift measured in low double digits. That is precisely what the benchmarks deliver, and it is why nobody at NVIDIA marketing wanted to talk about raster.

The bandwidth figure is where the GDDR7 earns its keep. Club386's comparison lists the 5080 at 960 GB/s against 737 GB/s for the 4080 — though note that 737 GB/s and 23 Gbps are the 4080 Super's numbers; the original 4080 is 22.4 Gbps and about 717 GB/s. Either way, the 5080 carries roughly 30–34% more memory bandwidth, and that is the lever separating the two cards most at 4K and in ray-traced titles, where framebuffer traffic is heaviest. If you game at 1080p or 1440p, the extra bandwidth mostly idles.

Connectivity: DisplayPort 2.1 vs 1.4a

The most future-relevant difference here is not compute at all — it is the display output. The 5080 ships DisplayPort 2.1 with UHBR20 (up to 80 Gbps); the 4080 is stuck on DisplayPort 1.4a. In practice, 1.4a with Display Stream Compression already drives 4K at 240Hz, so this is not a today problem for most people. It becomes a tomorrow problem the moment you want uncompressed 4K above 240Hz, or 8K without leaning hard on DSC. If you are building around a next-gen high-refresh panel, this is a legitimate reason to prefer Blackwell — and if you are still deciding whether your monitor's variable-refresh tech even matters, our G-Sync vs FreeSync breakdown is the companion read. For anyone gaming at 4K/144 or 1440p, DisplayPort 1.4a on the 4080 is not the thing holding you back in 2026.

The 4080 Super Problem

You cannot honestly evaluate the RTX 5080 without first putting the 4080 Super on the table, because the Super is the reason the 5080's value proposition is so thin. This is the section the manufacturer's slide deck skipped.

The Card the 5080 Really Replaced

The RTX 4080 Super arrived on 31 January 2024 with 10,240 CUDA cores across 80 SMs, 23 Gbps GDDR6X on the same 256-bit bus, and a $999 price. Read that price again. NVIDIA did not set the 5080 at $999 to undercut the 2022 4080's $1,199 — it set the 5080 at $999 to match the price the 4080 Super had already held for a full year. The generational "value improvement" that so many 2026 guides imply simply does not exist at MSRP. You are being asked to pay the same money you could have paid in early 2024, for a card that is about ten to fifteen percent faster in raster and that removes a feature you might rely on.

Why Reviewers Benchmark Against the Super

This is not a fringe framing; it is the professional consensus. GamersNexus, PCWorld, TechPowerUp, and Club386 all benchmarked the 5080 primarily against the 4080 Super, precisely because it is the price-equivalent card. PCWorld's Brad Chacos put it in one flat sentence: the RTX 5080 is "just 15 percent faster at 4K resolution than the $999 RTX 4080 Super." That $999 in his sentence is doing enormous work. When the price is identical and the delta is 15% at the resolution the card is built for, the word "generational" starts to feel like a stretch. You can read the numbers in full in GamersNexus's 5080 Founders Edition review and Club386's head-to-head.

The $999-to-$999 Reality

So the honest version of the matchup is this: same $999, roughly 15% more frames, two years later, minus 32-bit PhysX. If that sounds familiar, it is because the entire Blackwell gaming stack tells the same story one tier at a time — we documented the identical shrug one rung down in our look at the RTX 5070 versus 4070, where the newer card is roughly a rebadged 4070 Super with a smaller sticker. Blackwell is not a bad architecture. It is a modest one being sold as a leap, and the 4080 Super is the receipt.

Benchmarks: What 10–15% Actually Looks Like

Here is where it gets genuinely interesting, because the benchmark outlets do not agree with each other — and the spread between them tells you more than any single number.

The Numbers From Six Sources

Every figure below is a real published result. Note the range: from a 4% aggregate to a 19% 1080p claim, all describing the same two cards.

Why the Aggregators Disagree (4% vs 19%)

The 4%-to-19% spread is not sloppiness; it is methodology. Technical City's aggregate index folds in synthetic and compute workloads where the 5080's advantages wash out, so it lands near 4%. CheckFPS's 19% comes from 1080p averages, where CPU-limited scenes and driver-level gains flatter the newer card in ways that vanish under real GPU load. The trustworthy middle is the 4K raster cluster — NanoReview's 11%, TechPowerUp's 14%, PCWorld's 15% — because 4K is where the 5080's extra CUDA cores and 960 GB/s of GDDR7 bandwidth actually get to work. Call it 10–15% at the resolution people buy an xx80 for. Steve Burke at GamersNexus was blunter, describing gains "as low as 7–10%, which is about as boring as possible." His Black Myth: Wukong result — a six-FPS lead at 4K, where the 4080 and 4080 Super were functionally identical to each other — is the perfect illustration: a rounding error dressed as a generation.

Ray Tracing: A Bit More Daylight

Ray tracing is the one raster-adjacent workload where the 5080 opens a slightly wider gap, because RT hammers memory bandwidth and the GDDR7 finally matters. The fourth-generation RT cores plus 960 GB/s buy you a bit more headroom in path-traced titles than the flat ~12% raster average suggests — though even here you are talking high-teens percentages, not the doubling NVIDIA's marketing slides imply. And crucially, the 4080 is not incapable at RT; it is simply a step behind. If your reason for upgrading is "I want playable path tracing," understand that neither of these cards delivers it without upscaling, and both lean on DLSS to get there. Which brings us to the software.

DLSS 4, Frame Gen, and the 'DLSS 5' That Isn't

Software is where NVIDIA fights this comparison, because the hardware gap is embarrassing. It is also where the marketing gets loosest, so we are going to be exact.

DLSS 4 Is Not Blackwell-Exclusive

Here is the fact that most "5080 crushes 4080" videos bury: the headline DLSS 4 upgrade — the new transformer-model upscaler and Ray Reconstruction — runs on every RTX card, including the 4080. NVIDIA backported the transformer model to the entire RTX line. So the single biggest image-quality improvement of the DLSS 4 era is not a reason to buy the 5080 over the 4080. Both cards get sharper upscaling and better-denoised ray tracing from the same software branch. You can confirm the feature breakdown on NVIDIA's own DLSS page, which is careful to distinguish upscaling (all RTX) from frame generation (tiered by generation).

Multi Frame Generation: The One Real Software Gap

The genuine, defensible software advantage is Multi Frame Generation. The 5080 can generate up to three interpolated frames per rendered frame (the "up to 4×" figure), while the 4080 is capped at single frame generation — one generated frame per rendered frame, the DLSS 3 approach, effectively 2×. In supported titles on a high-refresh panel, MFG is real and it feels good; PCWorld's Chacos called it "wonderful" and said games "look and feel so much smoother." The caveats are equally real: MFG multiplies frames but not responsiveness, so input latency tracks your base framerate, not the inflated counter. Turn it on below a solid ~60 FPS base and you get a smooth-looking, mushy-feeling mess. It is a genuine feature for driving 240Hz-plus displays from an already-high framerate, and if you are chasing those numbers, our 144Hz vs 240Hz analysis explains why the felt benefit above 144Hz is smaller than the spec sheet promises.

There Is No 'DLSS 5.0' or 'AI Overdrive'

You will see 2026 comparison pages claim the 5080 supports "DLSS 4.0/5.0 with AI Overdrive" while the 4080 is "limited to DLSS 3.5." Ignore this. As of mid-2026 there is no DLSS 5.0 and no NVIDIA feature called "AI Overdrive" — those are invented spec-sheet filler. The real branch is DLSS 4, shipped alongside the 50-series in January 2025, with DLSS 4.5 (adding higher MFG multipliers and a second-generation transformer model) announced at CES 2026. When a comparison invents a version number, treat the rest of its numbers with suspicion. The honest software summary is one line: both cards run DLSS 4 upscaling; only the 5080 runs Multi Frame Generation.

The PhysX Catastrophe: Where the 4080 Wins

Now the part no other GPU comparison on the internet will lead with, because most GPU comparisons are not written for people who own Batman: Arkham City on a disc. This is a genuine, measurable category where the older card is flatly better, and it is the reason a retro-minded builder should think twice.

What Blackwell Quietly Killed

Blackwell dropped support for 32-bit CUDA. That sounds like an obscure developer footnote until you realize that GPU-accelerated PhysX in dozens of late-2000s and early-2010s games was built as 32-bit CUDA applications. On a 50-series card, those effects can no longer run on the GPU. They fall back to the CPU — single-threaded, on a subsystem never designed to carry them — and the framerate collapses. NVIDIA's own statement is admirably direct: "This is expected behavior as 32-bit CUDA applications are deprecated on GeForce RTX 50 series GPUs." Expected, deprecated, and — for anyone with a legacy library — a downgrade you paid a thousand dollars for. The 4080, being Ada, still runs 32-bit CUDA and therefore still runs these effects on the GPU exactly as intended.

The Benchmarks: A 2010 GTX 580 Wins

GamersNexus benchmarked this and the results are the funniest and most damning numbers in this entire article. With GPU PhysX enabled, a GeForce GTX 580 — a card from November 2010 — beats the RTX 5080 in affected titles. Their summary line: "A GTX 580 is up to 81% better than NVIDIA's technologically 'outdated' RTX 5080." Here is the concrete data.

Thirty frames in Mafia II on a 2025 flagship, versus fifty-six on a fifteen-year-old card. That is not a bug; it is a deliberate deprecation with a predictable result. Read the full teardown in GamersNexus's PhysX investigation.

Which Games Break

The affected list is a greatest-hits of the PhysX-showcase era: Mafia II, the Batman: Arkham games, Borderlands 2, Metro 2033 and Last Light, Mirror's Edge, and Assassin's Creed IV: Black Flag, among others. In every case the workaround is the same and equally unsatisfying: turn GPU PhysX off and lose the effects, or accept the CPU-bound framerate. The 4080 needs no workaround. If a meaningful slice of your library predates 2015 and used hardware PhysX for its flying debris and cloth and fog, the Ada card is not the compromise — it is the correct tool, and the 5080 is the regression. There is no more staresback-appropriate sentence in this comparison than: the two-year-old card runs your old games better, on purpose.

The Missing-ROPs Fiasco

Even setting the retro angle aside, the 5080's launch carried a hardware-quality asterisk that the 4080's did not. If you buy a 5080 — new or used — you need to know about this before it ships to you.

104 Instead of 112

The RTX 5080 is specified with 112 ROPs (render output units, the back-end hardware that writes finished pixels). A batch of early production units shipped with only 104 — eight ROPs missing, roughly 7% of the card's raster back-end simply absent. It was not isolated to the 5080; the 5090, 5090D, and 5070 Ti were hit by the same defect. NVIDIA's statement to The Verge acknowledged that "an early production build of the RTX 5080 GPUs were also affected by the same issue," pegged the affected share at around 0.5% of units, and told buyers to "contact the board manufacturer for a replacement." There was no recall.

The Performance Hit

The loss is measurable and, in the worst case, self-defeating. In 3DMark Time Spy, a full 112-ROP card scored 32,273 while a defective 104-ROP unit scored 28,118 — about 12% slower. In games, testing showed anywhere from no meaningful difference up to an 11% loss at 4K. Sit with the implication: a defective RTX 5080 can surrender its entire generational lead over the 4080 and 4080 Super. You would be paying 2025 money for 2022 performance, because eight ROPs never made it onto the die. The 4080, for all its age, never had a shipping defect that could erase its own spec sheet.

How to Check Your Card (GPU-Z)

The good news is that the check takes thirty seconds and the fix is a straightforward RMA. Install a current driver, open TechPowerUp's GPU-Z, and read the ROPs field. If it says 112, you are fine. If it says 104, you have a defective unit and grounds for a replacement through your board partner. Do this the day the card arrives, before your return window closes — and if you are buying a used 5080 in 2026, insist on a GPU-Z screenshot showing 112 ROPs before money changes hands. Full methodology is in GamersNexus's missing-ROPs investigation.

Power, Heat, and the Efficiency Story

Not everything here favors the old card. Give Blackwell its due: it is meaningfully more efficient, and that is the one uplift NVIDIA can claim without an asterisk.

360W vs 320W

The raw numbers look like a loss for the 5080: 360W board power against the 4080's 320W. The newer card draws 40W more at the wall. But raw draw is the wrong metric when the faster card also does more work. The right metric is performance per watt, and on that axis the 5080 is genuinely ahead — it delivers its 10–15% more frames while converting power to pixels more efficiently than any prior xx80. The 40W is the price of the higher clocks and the faster memory, not waste heat for its own sake.

Efficiency: The One Unambiguous 5080 Win

KitGuru's Dominic Moass, who was otherwise unimpressed — his review called "just a 13% gain over the previous xx80 SKU" something "hardly cause for wild celebration" and "only a very small step forward" — nonetheless handed the 5080 one unqualified compliment: "the most efficient GPU we've ever tested." That is worth taking seriously. If your build is thermally constrained, or you care about sustained clocks in a small case, or your room simply gets hot, the 5080's efficiency is a real, un-asterisked advantage. It is telling that the strongest genuine praise for the card is about watts, not frames. If you want to push either card further on the efficiency axis, undervolting is the free lunch — our undervolting walkthrough covers the CPU side of the same discipline, and the GPU logic (lower voltage, same clocks, less heat) is identical.

The 16-Pin Connector, Again

Both cards use a single 16-pin connector, but not the same one. The 4080 uses the original 12VHPWR; the 5080 uses the revised 12V-2×6. The revision improves seating and contact, but the underlying concern that dogged the 4090 and 5090 has not fully evaporated — seat the connector fully, hear the click, and do not run it with a tight cable bend directly at the plug. At 360W the 5080 is far from the 575W 5090 that generated the melting headlines, so the risk is lower, but the discipline is the same. And since both of these are heavy, sag-prone triple-slot bricks, install a support: our GPU support-bracket guide exists precisely because cards this size will droop and stress the PCIe slot over months.

Pricing and Availability in Mid-2026

This is the section that has changed most since launch, and it reframes the entire comparison. The specs are static; the prices are on fire.

The Pricing Table

Here is where the two cards actually sit in July 2026, MSRP versus street.

The GDDR7 Memory Crunch

The reason the 5080 has never reliably sold at $999 is not scalping — it is the memory market. Through late 2025 and into 2026, AI datacenter demand consumed GDDR7 and DRAM supply, and prices went vertical. The higher-density 3GB GDDR7 modules now cost roughly three times what the 2GB modules did, and memory has ballooned into the dominant share of a high-end card's bill of materials. The knock-on effect is visible across the whole stack: the RTX 5090 blew past $4,300 on the street by 11 July 2026, per TechTimes, in what they aptly called a market of "paper cards." The 5080 sits lower on that curve, but it rides the same wave — which is why a $999 MSRP so often reads as $1,099 or worse at checkout. The same crunch is squeezing storage, incidentally; our note on PCIe 6.0 SSDs covers how AI demand is eating the consumer end of that market too.

The RTX 50 Super That Isn't Coming (Yet)

The memory crunch also killed the obvious "just wait for the refresh" advice. NVIDIA reportedly has RTX 50 Super models — including a 5080 Super — fully developed and ready, but has parked them in limbo because the higher-capacity GDDR7 they need is too expensive to ship at a sane price. Tom's Hardware reported the Super lineup is stuck due to excessive GDDR7 pricing. So the buyer's calculus in mid-2026 is unusually stark: there is no imminent, better-value 5080 variant to wait for, and the 4080 Super on the used market has quietly become the most sensible money in this bracket. GPUDeals pegged the 4080 Super around $806 in January 2026 with a stronger value score than the 5080 — and that math has not gotten worse for the old card since.

Who Buys Which: Six Scenarios

Enough abstraction. Here is the card for the person, not the spec sheet. Find yourself in one of these.

The Six Buyer Profiles

1. The new 4K/high-refresh builder with no legacy library. Buy the 5080. You get GDDR7 bandwidth, DisplayPort 2.1 for next-gen panels, Multi Frame Generation, and current-gen driver priority. You have no old PhysX games to break, so Blackwell's one real downside does not touch you.
2. The retro and legacy PC gamer. Buy the 4080 (or Super). If your shelf holds Mafia II, the Arkham games, Borderlands 2, or Metro, the 5080 actively runs them worse. The Ada card keeps 32-bit CUDA and runs hardware PhysX as intended. This is the staresback default.
3. The value-first buyer. Buy a used 4080 Super at ~$806. You surrender roughly 10–15% of raster and Multi Frame Generation, and you pocket close to two hundred dollars against a real-world 5080 price. Best frames per dollar in the bracket.
4. The content creator and streamer. Lean 5080, modestly. The dual 9th-gen NVENC encoders add 4:2:2 hardware support that Ada lacks, and the extra memory bandwidth helps timeline scrubbing. If you are not encoding professionally, the 4080's 8th-gen NVENC is still excellent and the gap will not change your life.
5. The local-AI and LLM tinkerer. A wash on capacity, edge to the 5080 on speed. Both cards carry 16GB, so both hit the same ceiling on model size. The 5080's GDDR7 bandwidth and FP4 support make it faster within that ceiling — but 16GB is the wall for both, and no amount of bandwidth moves it.
6. The existing 4080 owner. Stay put. A 10–15% raster bump for the same or higher money, at the cost of your 32-bit PhysX games and a missing-ROPs lottery ticket, is not an upgrade. It is a lateral move with downside. Skip it and wait for a real generational leap.

The Retro Library Caveat

Scenarios two and six both hinge on the same overlooked variable: what is actually in your library. The mainstream tech press evaluates GPUs almost entirely on new AAA releases at 4K, which is exactly the workload where the 5080 looks best and the PhysX regression is invisible. If your play habits skew older — and on a retro-gaming site, they often do — your real-world experience with a 5080 could be meaningfully worse than the 4080 in the specific titles you load most. No aggregate benchmark will warn you about that, because no aggregate benchmark tests fifteen-year-old PhysX showcases. This site does.

The Local-AI 16GB Ceiling

One more caution for the AI-curious, because it cuts against the newest-is-best instinct: neither of these cards is a smart local-inference buy in a memory-starved 2026. Both are stuck at 16GB, which caps the model sizes you can run comfortably regardless of how fast the memory is. The 5080's bandwidth wins the benchmarks it can fit, but the moment your model needs more than 16GB, both cards fall off the same cliff. If local AI is your primary use, your money is better spent chasing VRAM capacity than the Blackwell badge — and in the current market, that is a painful sentence to write.

Migrating Between the Two

Whichever direction you are going — and in 2026 people are genuinely going both ways — do the swap cleanly. A dirty driver state is the most common cause of "my new card feels wrong" posts.

4080 → 5080: The Clean-Install Path

Do not just yank the old card and drop in the new one on top of stale drivers. Use Display Driver Uninstaller and verify the silicon on first boot — especially the ROPs count, given the launch defect.

# --- 4080 -> 5080 clean swap ---
# 1. Record current settings (resolution, refresh, any undervolt curve)
# 2. Download the latest NVIDIA driver + Display Driver Uninstaller (DDU)
# 3. Settings > Windows Update: pause automatic driver installs
# 4. Boot into Safe Mode, run DDU -> "Clean and shut down"
# 5. Swap the card. Seat the 16-pin 12V-2x6 fully -- listen for the click
# 6. Boot, install the driver with Custom > "Perform a clean installation"
# 7. Verify the silicon in GPU-Z:
gpu-z   # ROPs MUST read 112 (not 104); Bus Interface = PCIe 5.0 x16
# 8. Sanity-check: Memory = 16 GB GDDR7, Bandwidth ~= 960 GB/s
# 9. Re-enable DLSS 4; Multi Frame Generation now appears per-game

If step 7 shows 104 ROPs, stop and start an RMA with your board partner before the return window closes. That is the whole reason this sequence checks the hardware before you get attached to the card.

5080 → 4080: Yes, People Do This

The reverse migration is not hypothetical. Retro-focused builders who discovered the PhysX regression, and value buyers who did the $999-to-$999 math, have downgraded on purpose. The process is identical — DDU clean, physical swap, fresh Ada driver — with one addition: after installing the 4080, load one of your affected PhysX titles, enable GPU PhysX in its settings, and confirm the effects now run smoothly. That confirmation is the entire point of going back. You are trading Multi Frame Generation and a bit of 4K raster for a library that works, and you should verify you actually got what you traded for.

Settings to Re-Check After the Swap

In either direction, three things need a look once the driver is clean. First, re-set your monitor's refresh rate and variable-refresh mode in Windows Display settings — a driver wipe often drops you back to 60Hz. Second, rebuild any per-game DLSS or frame-generation presets, since MFG exists only on the 5080 and its toggles will not carry over to a 4080. Third, if you undervolt, re-apply the curve from scratch; voltage-frequency curves do not transfer between architectures and a stale one will not load. Ten minutes of housekeeping is the difference between a card that performs to spec and a forum post asking why it doesn't.

The Verdict

Two years, one memory standard, one deprecated feature, and the same $999. Here is the ledger, then the call.

RTX 5080 — Pros and Cons

RTX 4080 — Pros and Cons

The Machine's Call

The RTX 5080 is a competent, efficient, mildly faster card that NVIDIA priced as if the 4080 Super never existed and specced as if 2010's games do not matter. Both pretenses are false. For a fresh 4K build with a high-refresh panel and no legacy library, buy the 5080 and enjoy the bandwidth, the DisplayPort 2.1, and the Multi Frame Generation — just check the ROPs the day it arrives. For everyone else, and especially for the reader this site is written for, the 4080 Super at around $806 is the smarter money: within fifteen percent of the newer card, two hundred dollars cheaper in the real world, and — this is the part the mainstream press will not tell you — actually better at the games in your collection that used hardware PhysX. When the two-year-old card runs your library faster than the flagship, on purpose, the flagship has not earned the upgrade. Buy the frames you will use, not the badge. The 4080 wins this one on points, and the GTX 580 wins Mafia II.