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SLI - 2 Titans - is PCIE 3.0 important?
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boe
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Default SLI - 2 Titans - is PCIE 3.0 important? - 05-17-2013, 18:10 | posts: 103

Hello,

I googled it but can't seem to find much definitive for benchmarks on this. One person said there was a big difference but their system info shows that on the PCIe 2.0 system he didn't have SLI enabled so it is hard to take that as credible.

I have a i7-x990 processor so I'm hoping I don't need to change out my processor, motherboard and memory just go take advantage of a couple of 780s or titans
   
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CPC_RedDawn
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Default 05-17-2013, 18:22 | posts: 7,171 | Location: Wolverhampton/United Kingdom

with a 990x CPU you wont be bottlenecked at all as long as you overclock it to 4.0GHz at least. But this being a six-core CPU I don't see why it would bottneck anything.
   
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beta-sama
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Default 05-17-2013, 18:35 | posts: 74 | Location: Belgium, Brussels

Only at high resolution you will notice difference 2.0 vs 3.0.
   
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boe
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Default 05-17-2013, 18:38 | posts: 103

Quote:
Originally Posted by beta-sama View Post
Only at high resolution you will notice difference 2.0 vs 3.0.
Thanks - I typically do 1920 x 1200 is that considered high? Is there any place to see how much an effect it has in benchmarks?
   
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Pill Monster
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Default 05-17-2013, 18:46 | posts: 25,254 | Location: NZ

You might lose a few fps but I wouldn't say it was important.

7970 CF gained around 10-15fps in a couple of benchmarks with PCI-E 3.0 enabled....
   
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boe
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Default 05-17-2013, 18:52 | posts: 103

Quote:
Originally Posted by Pill Monster View Post
You might lose a few fps but I wouldn't say it was important.

7970 CF gained around 10-15fps in a couple of benchmarks with PCI-E 3.0 enabled....
Thanks - can you point to that source? The context of 10-15 is very important unless it is 10-15 on top of 120. If Crysis 3 only gets around 30fps - 10-15 FPS additional would be very important.
   
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Pill Monster
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Default 05-17-2013, 19:40 | posts: 25,254 | Location: NZ

http://www.anandtech.com/show/6934/c...gpu-at-1440p/5
   
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---TK---
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Default 05-17-2013, 20:53 | posts: 22,135 | Location: Schiit Headquarters, USA

Quote:
Originally Posted by boe View Post
Thanks - can you point to that source? The context of 10-15 is very important unless it is 10-15 on top of 120. If Crysis 3 only gets around 30fps - 10-15 FPS additional would be very important.
At your resolution the difference will be much less pronounced
   
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Default 05-17-2013, 22:37 | posts: 11,981 | Location: United kingdom

Hilbert tested pci 2.0 vs 3.0 in one of the reviews and it was 2-3fps. As you go higher in resolution the fps gains increase. I cannot remember what review it was.
   
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boe
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Default 05-20-2013, 01:37 | posts: 103

THanks.
   
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