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Nvidia Profiles - SLI Question

X

Xeneize

n00b
Joined
Sep 19, 2005
Messages
35
I'm very confused with this whole profile stuff (coming from ATI), however I do notice a huge performance boost if I set the SLI Rendering Mode (on the profiles) to Alternate Frame rendering 2 over anything else including Single GPU rendering and SLI antialiasing.......

Can someone explain to me the difference between those 3 options?? Because in FEAR for example (1600x1200 all Maxed 4x and 16x no soft shadows) I get 20 FPS with SLI Antialising, about 30-45 with Single-GPU rendering and 45-75 with Alternate frame rendering 2..... what would I loose and gain with these options?
 
I say if you get better frame rates and no anomolies. then use the fastest mode you find.
 
In a SLi setup most people opt for Alternate Frame Rendering. The advantage is it's FAST very FAST. If you have two cards there is NEVER a reason to run Single Card Rendering. That would be defeating the perpuse of SLi. SLi rendering is supposed to give you the best effect, but tends to slow down in some games as you are more dependent on the SLi link up and less on simple timing. If you got the eye you MIGHT spot the diffrince but most can't.

My final suggestion. Run what runs fastest for you, that's the final point of almost ANY setup.

http://www.guru3d.com/article/Videocards/242/1/

this is a VERY good artical about how modern cards work. This might clear things up a little.

HTH.
 
Single gpu mode is just that - it only utilizes one of the video cards

SLI Anti aliasing uses very high levels of AA (which reduce jagged lines, but result in performance drop

Alternate Frame rendering is a method of using both video cards to boost performance
 
Xeneize said:
I'm very confused with this whole profile stuff (coming from ATI), however I do notice a huge performance boost if I set the SLI Rendering Mode (on the profiles) to Alternate Frame rendering 2 over anything else including Single GPU rendering and SLI antialiasing.......

Can someone explain to me the difference between those 3 options?? Because in FEAR for example (1600x1200 all Maxed 4x and 16x no soft shadows) I get 20 FPS with SLI Antialising, about 30-45 with Single-GPU rendering and 45-75 with Alternate frame rendering 2..... what would I loose and gain with these options?
Click to expand...

Are you using the profile that came with FEAR? Also, the 81.95 drivers have a new profile that's supposed to improve SLI performance in FEAR.
 
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