ASUS GeForce RTX 4080 Super STRIX OC Review 21

ASUS GeForce RTX 4080 Super STRIX OC Review

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Value and Conclusion

  • According to ASUS, the RTX 4080 Super STRIX OC will sell for $1250.
  • Excellent performance for 4K
  • Incredible energy efficiency
  • DLSS 3 frame generation
  • Ray tracing performance improved
  • Powerful cooler
  • Extremely quiet (quiet BIOS)
  • Idle fan-stop
  • Low temperatures
  • Factory overclock
  • Backplate included
  • Additional HDMI port
  • Power limit adjustment range increased
  • Support for HDMI 2.1
  • Headers for case fans to sync with the GPU fans
  • Support for AV1 hardware encode and decode
  • 16-pin power cable adapter included
  • Very big price increase over MSRP
  • Almost no performance increase over RTX 4080 non-Super
  • Fans could be a little bit quieter
  • No DisplayPort 2.0 support
Our review coverage of the GeForce RTX 4080 Super includes nine cards: ASUS RTX 4080 Super STRIX OC, ASUS RTX 4080 Super TUF OC, Galax RTX 4080 Super SG, Gigabyte RTX 4080 Super Gaming OC, MSI RTX 4080 Super Expert, NVIDIA RTX 4080 Super Founders Edition, Palit RTX 4080 Super GamingPro OC, PNY RTX 4080 Super Verto OC, Zotac RTX 4080 Super AMP Extreme Airo.

With the GeForce RTX 40 Super series, NVIDIA is refreshing their Ada-based lineup for 2024. At CES Las Vegas, the company announced three new SKUs: GeForce RTX 4070 Super, RTX 4070 Super Ti and RTX 4080 Super. While we reviewed RTX 4070 Super two weeks ago, and RTX 4070 Ti Super last week. Today, the final review embargo has lifted, for the GeForce RTX 4080 Super. Unlike previous launches, both MSRP and non-MSRP reviews go live at the same time and the first cards should be on-shelf now.

Architecture
RTX 4080 Super is built using the same AD103 GPU as the RTX 4080 non-Super. This means that the RTX 4090 is still the only gaming GPU that's using the more powerful AD102 graphics chip. While the RTX 4080 came with 9,728 cores on the chip, the RTX 4080 Super runs the full shader count available in the GPU—10,240, or +5.3%. NVIDIA hasn't increased card's power limit of 320 W, but the rated boost frequency has received a 1.8% clock bump, to 2550 MHz, up 45 MHz from 2505 MHz on the RTX 4080 non-Super. Last but not least, the memory is running at 23 Gbps now, vs 22.4 Gbps (+2.7%). The VRAM size is still 16 GB, connected using a 256-bit memory bus, and the L2 cache is identical, too, at 64 MB.

The STRIX OC the ASUS flagship RTX 4080 Super model. It comes with a huge cooler that screams "premium," thanks to its all-metal construction. You also get a second HDMI port and two headers for case fans to synchronize them with the fans on the graphics card. The factory overclock is the biggest of all the cards tested today, a 90 MHz increase to 2640 MHz rated boost, or +3.5%.

Performance
Averaged over the 25 games in our test suite, at 4K, we find the NV Founders Edition only 1.5% faster than 4080 non-Super Founders Edition, which is MUCH less than expected. While NVIDIA never said "+5%," I definitely expected more. It's not a power limit issue, running at max power yields another +1% only. These numbers are pretty constant across resolutions, and even with RT enabled, too. Looking at the individual games, the differences are 1 or 2 FPS, nothing you'd ever notice subjectively. While that's certainly a bit disappointing, the fact remains that RTX 4080 Super, just like the RTX 4080 non-Super, is a fantastic card for gaming. In a pure raster scenario, the AMD Radeon RX 7900 XTX is still a tiny bit faster, but NVIDIA's card makes up for that with much better RT performance. Still, I feel like beating the XTX across the board was one of the goals of RTX 4080 Super, and NVIDIA failed here. In NVIDIA's defense, the RTX 4080 Super leverages the full GPU, no units were held back, even though small additional gains could have been achieved with higher clock speeds and power limit. The ASUS STRIX gains an additional 2% performance over the NVIDIA FE, which isn't much—just like other factory overclocked models. Compared to the RTX 4070 Ti Super, the performance uplift is 20%, the card is also 32% faster than RTX 4070 Ti non-Super. RTX 3080 Ti performance is roughly comparable to RTX 3090, which makes the gen-over-gen uplift a very solid 32%. NVIDIA's flagship, the RTX 4090 is still the undisputed king of the hill, offering almost 25% better performance.

Taking a closer look at our test results, most of the games are in the 1.5% range—it's not that one game is 7% and the others are 0%, the gains are really small across the board. There is definitely some variations in GPU chip silicon quality, which affects performance due to the way NVIDIA's Boost algorithm works, but with my sample size of 9 cards tested, I think that I can confidently say that there's no way you're getting +5% out of the 4080 Super, unless you manually overclock it. Other reviewers have similar numbers, so it's not just me. Surprisingly, the RTX 4070 Super, initially considered the least exciting among the new releases on forums, showed the highest performance increase (+15%). In contrast, the RTX 4070 Ti Super, despite receiving a GPU upgrade and a 33% memory bandwidth increase, only saw a modest +5% in extra performance. Today's release could almost be labeled a "rebrand," but the improved pricing certainly adds to its appeal.

Optimum Resolution, Upscaling
No doubt, if you desire a great 4K experience, then RTX 4080 Super is what you want. In our testing the card reached well over 60 FPS at 4K with maximized settings and no upscaling. While it's a bit overkill for 1440p, I could still see people with high-refresh monitors opting for it, even though I'd probably buy a better monitor first, before spending $1000 on a graphics card. On the other hand, this could be seen as some sort of future proofing. Just like the other GeForce 40 cards, RTX 4080 Super has support for all of NVIDIA's DLSS technologies: NVIDIA DLSS 2 upscaling, DLSS 3 frame generation and DLSS 3.5 ray reconstruction. On top of that you can enable AMD FSR 2 and FSR 3 in games, because those technologies work on all GPUs from all vendors. Basically this means that you'll be covered in terms of upscaling and frame generation. While DLSS 3 is definitely the leading solution right now, with the best game support, AMD is pushing hard and their frame generation solution will come to several major titles in 2024. From a technology perspective, DLSS 3 is superior, because it uses the optical flow hardware unit in Ada GPUs, and NVIDIA Reflex will help bring down the input latency.

VRAM & Memory Bus
GeForce RTX 4080 Super comes with 16 GB VRAM, which makes a lot of sense in this segment, even though I feel a bit more could be useful in the future. While AMD offers 20 GB on the RX 7900 XT and 24 GB on the XTX, the extra memory cannot make a difference, not even in our most memory intensive test (Alan Wake 2 RT at 4K). If VRAM was something that you could scale up and down like clock frequency then I would have loved to see 20 GB, but that's easier said than done. VRAM size is tied to the number of memory chips installed on the card. These come in 2 GB typically, which means for 20 GB you'd have to install 10 chips, which requires a 320-bit wide memory interface in the GPU (10x 32 bit). The memory interface on AD103 supports only up to 256-bit, so NVIDIA would have had to use the much bigger (= more expensive) AD102. Using 4 GB chips, which aren't available in any significant volume would mean five chips, using a narrow 160-bit bus—I'd prefer 256-bit 16 GB over that any day. Technically that does leave room for a RTX 4080 Ti Super, with AD102, 20 GB and 320-bit, maybe something for the $1200-$1400 price range that just opened up with 4080 Super.

RT
As expected, ray tracing works very well on the GeForce RTX 4080 Super, clearly offering a superior experience than what any AMD card can achieve. For example, RX 7900 XTX is over 20% slower with RT enabled. That's because the dedicated RT units in AMD's cards are weaker, so more tasks are offloaded to the GPU shaders. While I have to admit that RT isn't as crucial in the lower performance segments, where pricing is much more relevant, I feel that RT is very important in this price range. You're spending a lot of money, which means you want to be able to dial the settings up as high as possible, for maximized eye candy.

GPU Compute
With our new 2024 test suite, we are adding a section focused on testing GPU Compute, which is becoming more and more important every day. Emerging AI Technologies like ChatGPT, Stable Diffusion and others are transforming the world. While the use of compute on the consumer desktop is limited today, it will grow considerably. For our first round of testing we've picked three real-life workloads that allow us to get a feel what to expect. Here, NVIDIA is the clear leader with a substantial advantage over both AMD and Intel. It's not only about performance, but also about the software ecosystem, which is much more advanced on the NV side, but the other players are working hard to catch up, I'm sure.

Physical Design, Heat & Noise
The ASUS Strix OC comes with a fantastic cooling solution that looks amazing and feels extremely solid thanks to the thick metal used. Cooling performance is also the best of all the cards tested today, as confirmed by our apples-to-apples noise-normalized cooler comparison tests. Compared to the FE, the card runs almost 7°C cooler which isn't huge, but it give ASUS a lot of flexibility with the fan settings. As expected temperatures are outstanding, and noise levels are excellent, too, with 30.5 dBA. That is not whisper-quiet though, but there is still the "quiet" BIOS. While that improves noise levels to 28 dBA, I still feel that less noise would have been easy. Temperatures are just marginally increased to 63°C, so had ASUS allowed 67°C, the card could have been whisper-quiet, which could have helped justify the pricing. As expected for a modern graphics card in 2024, the fans will stop spinning when not gaming, for the perfect noise-free experience.

Power
Power efficiency of the RTX 4080 Super is just as amazing as the RTX 4080 non-Super. The card offers fantastic performance, yet consumes only around 300 W during gaming, which means PSU requirements are minimal, and this helps with heat and noise, too, because the cooler has to work less hard. AMD's Radeon RX 7900 XTX is a bit more power-hungry with 350 W, but it's not a night-and-day difference, neither for your power bill, nor for PSU capacity planning. While there is still some controversy around the 12-pin power connector, all RTX 4080 Super cards come with it, and I'm a big fan, even though I'm not sure if the location in the middle of the card is the best possible choice.

Overclocking
There is not much to report on overclocking, other than it works, is easy to do and will yield you around 6 to 7%, which is the typical range that we've been seeing from most cards in recent years. With this review we've switched our OC testing to use maximized power limits instead of the default, but it really doesn't make much of a difference, RTX 4080 Super is not power starved. While there's some MSRP cards that don't allow any manual power limit adjustments, ASUS went all out on the STRIX and lets you dial the power limit up to 420 W, the highest result of all testing today.

Pricing & Alternatives
NVIDIA has set an MSRP of $1000 for the RTX 4080 Super and that's the real innovation here. Compared to the current $1200 for the RTX 4080 non-Super, this introduces a significant 20% discount. I have to applaud NVIDIA for that, especially, considering that there's not much competition in this segment. AMD is happy with their $970 price point for the 7900 XTX, but that changes today. RTX 4080 Super at $1000 means that RX 7900 XTX becomes unsellable unless its price is lowered considerably. The RTX 4080 Super offers superior RT performance, similar raster perf and support for DLSS—exactly what people in the premium segment are looking for. Even at $900 I'm not sure if I'd prefer 7900 XTX over a $1000 4080 Super, it's just a 10% delta. Still, $1000 is definitely not a steal for the RTX 4080 Super and what it offers—the 2024 GPU market is still expensive.

ASUS has confirmed that their STRIX OC will sell for $250, or a whopping +$250 over the NVIDIA MSRP. There's no way this 25% increase can be justified, maybe unless you want the best and have the money. But at that point I'd rather consider the RTX 4090. Still, the ASUS STRIX is an impressive piece of technology, but I'd rather opt for the TUF, which offers an excellent experience, too, especially the non-OC model at $1000 is very interesting here. If you want to save a bit of money, probably the most interesting alternative is RX 7900 XT, which currently sells for $710, but is considerably slower, which means lower detail settings or upscaling, but there's no DLSS on the card to help with that. NVIDIA has confirmed that the RTX 4080 non-Super is now end-of-life. You could potentially get a card at a good price; anything $950 and below is what I'd call "interesting." If it's higher, go for the Super model, also for its better resale value. If you really must have the best, then the RTX 4090 is what you want—that hasn't changed with the release of the RTX 4080 Super, but be prepared to pay for it: +80% for an almost 30% increase in performance is tough. At the end of the day, RTX 4080 Super is disappointing in terms of the changes it brings, but it redeems itself thanks to its greatly improved pricing. While I'm sure there will be a lot of drama about the minimal gains, what the GPU market really needs is lower prices, not marginally better performance for the same price. In this regard, the RTX 4080 Super can be considered a success.
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Apr 29th, 2024 13:03 EDT change timezone

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