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GTX 470s tri-SLI 2D / 3D Surround Question

post #1 of 7
Thread Starter 
Scenario: Add another GTX 470 card (tri-SLI) and two more Asus 3D monitors (for a total of 3 @ 5760x1080 resolution) to my sig rig; and play games like Crysis 2 - DX 11 in 2D and/or 3D at ultra high settings, would I experience decent frame rates? I think 3 470s can handle rendering in 2D and in 3D but my concern is the 1.25GB of VRAM? Any advice is appreciated.
Edited by Zmanster - 7/23/11 at 8:47am
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post #2 of 7
Huge VRM bottleneck at that res. That depends on the settings you want to run at too.
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post #3 of 7
Thread Starter 
Although I expect a bottleneck in 3D, what about playing in 2D @ 5670X1080 resolutions? If you have more specific information, like average frame rates using three monitors with a tri-SLI 470 setup? Anybody who owns 470s (especially in SLI or tri-SLI), please chime in. Thanks.
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post #4 of 7
well crysis 2 uses 1240mb of my ram at 1080 so it may look like crap with only 1280mb for 3 screens.

It all depends on how the game manages vram I think.
    
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post #5 of 7
You should send a pm to wermad, he ran triple screens with 470s.

He sold them to go AMD, but he's had major driver issues so I'm not sure what he'll tell you.
    
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post #6 of 7
Thread Starter 
Quote:
Originally Posted by BallaTheFeared View Post
You should send a pm to wermad, he ran triple screens with 470s.

He sold them to go AMD, but he's had major driver issues so I'm not sure what he'll tell you.
Thanks, good idea because I've received spot on watercooling advice from wermad.
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16GB Mushkin 1600 Kingston 128 GB SSD/WD 1TB SATA III Asus 24X Windows 7 Premium - 64 bit 
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post #7 of 7
On the most demanding games, you'll suffer a huge vram bottleneck. I used Metro 2033 as my testbed, if I could run metro smooth @ 5760x1080 or 3240x1920 (portrait) then most other games should run fine. The 470s have the power but they lack the vram to run metro so the best I could do was:

DX9
Low quality all settings.

Most all other (and olderr) games ran ok ~ medium settings.

Some suggestions:

-lower your resolution, some games will allow you to choose lower resolutions, this should help performance.
-Oc your cards; since you have them on water, get them up to 800 each and increase the ram speed accordingly.
-Use MSI afterburner and monitor your vram usage. Detach the meter on the right, expand it and run some demanding games. If you don't have metro, you can find cheap now. I got mine for $5.
-Don't rely on benchmarks. Its all about game play. Find your most demanding games and test them.

Vram does make a huge difference. I soon as I got my new setup and sorted (and I'm still sorting) the drivers, I was able to play metro in high settings in dx11, but no really high.

3D gaming will also but a bit of a challenge to your setup. 470s are great for maxing out 1920x1080 and can also do 2560x1200. They are great for benchmarks but as I mentioned, the vram handicaps them in triple monitor gaming.

Alternatively: If you wish to stay with Nvidia, you can go with the gtx 580 3gb, Zotac and EVGA make them, and they're compatible with reference water blocks. You can also go with the cheaper EVGA gtx 570 2.5gb (there's a pending ek block for it since its the same pcb design as the EVGA gtx 570 "HD"). But this card still uses the same vrm design from nvidia and due to the higher power requirements of the double density vram chips, it does no oc that great. I was ready to jump on three 570 2.56gb but I want to oc my cards so this was the deal breaker for me.

Good luck
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