09-25-2018, 09:02 AM
https://www.techpowerup.com/reviews/NVID...ing/7.html
https://techreport.com/blog/34116/weighi...erformance
Quote:We are happy to report that the RTX 2080 Ti is finally able to overwhelm PCIe gen 3.0 x8, posting a small but tangible 2%–3% performance gain when going from gen 3.0 x8 to gen 3.0 x16, across resolutions. Granted, these are single-digit percentage differences, and you won't be able to notice them in regular gameplay, but graphics card makers expect you to pay like $100 premiums for factory overclocks that fetch essentially that much more performance out of the box. The performance difference isn't nothing, just like with those small out-of-the-box performance gains, but such small differences are impossible to notice in regular gameplay.
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For the first time since the introduction of PCIe gen 3.0 (circa 2011), 2-way SLI on a mainstream-desktop platform, such as Intel Z370 or AMD X470, could be slower than on an HEDT platform, such as Intel X299 or AMD X399, because mainstream-desktop platforms split one x16 link between two graphics cards, while HEDT platforms (not counting some cheaper Intel HEDT processors), provide uncompromising gen 3.0 x16 bandwidth for up to two graphics cards. Numbers for gen 3.0 x8 and gen 3.0 x4 also prove that PCI-Express gen 2.0 is finally outdated, so it's probably time you considered an upgrade for your 7-year old "Sandy Bridge-E" rig.
By this time next year, we could see the first desktop platforms and GPUs implementing PCI-Express gen 4.0 in the market. If only "Turing" supported PCIe gen 4.0, you would have had the luxury to run it at gen 4.0 x8 without worrying about any performance loss. Exactly this is the promise of PCIe gen 4.0, not more bandwidth per device, but each device working happily with a lower number of lanes, so processor makers aren't required to add more lanes.
https://techreport.com/blog/34116/weighi...erformance
Quote:The RTX 2080 Ti doesn't enjoy as large a gain, but it still reduces its time spent rendering difficult frames by 67% at the 16.7 ms threshold. For minor differences in image quality, I don't believe that's an improvement that any gamer serious about smooth frame delivery can ignore entirely.
It's valid to note that all we have to go on so far for DLSS is a pair of largely canned demos, not real and interactive games with unpredictable inputs. That said, I think any gamer who is displeased with the smoothness and fluidity of their gaming experience on a 4K monitor—even a G-Sync monitor—is going to want to try DLSS for themselves when more games that support it come to market, if they can, and see whether the minor tradeoffs other reviewers have established for image quality are noticeable to their own eyes versus the major improvement in frame-time consistency and smooth motion we've observed thus far.

