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Reason for SLI - Page 2

post #11 of 25
Quote:
Originally Posted by Dezixn View Post
Judging by the time gap between his, and Murlocke's post, i would say scetheluna intended that comment for the OP...

If not...

I hope your right. Says he posted 1 minute after me on my screen, so I assumed he was talking to me.

Either way the poster was half way correct. "That is so incorrect" would still be move. lol
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post #12 of 25
Nice...Give him an out
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post #13 of 25
Im pretty sure that SLI only renders in split frame rendering wich is half the frame,crossfire renders in different modes,. Feel free to correct me.
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post #14 of 25
Quote:
SLI offers two rendering and one anti-aliasing method for splitting the work between the video cards:

* Split Frame Rendering (SFR), the first rendering method. This analyzes the rendered image in order to split the workload 50/50 between the two GPUs. To do this, the frame is split horizontally in varying ratios depending on geometry. For example, in a scene where the top half of the frame is mostly empty sky, the dividing line will lower (so that both cards have an equal share), balancing geometry workload between the two GPUs. This method does not scale geometry work as well as AFR, however.
* Alternate Frame Rendering (AFR), the second rendering method. Here, each GPU renders entire frames in sequence - one GPU processes even frames, and the second processes odd frames, one after the other. When the secondary card finishes work on a frame (or part of a frame) the results are sent via the SLI bridge to the master GPU, which then outputs the completed frames. Ideally, this would result in the rendering time being cut in half, and thus performance from the video cards would double. In their advertising, NVIDIA claims up to 1.9 x the performance of one card, with the dual-card setup. (There is another mode, AFR2, which can be manually chosen, but NVIDIA has not documented the difference between it and normal AFR.)
* SLI Antialiasing. This is a standalone rendering mode that offers up to double the antialiasing performance by splitting the antialiasing workload between the two graphics cards, offering superior image quality. One GPU performs an antialiasing pattern which is slightly offset to the usual pattern (for example, slightly up and to the right), and the second GPU uses a pattern offset by an equal amount in the opposite direction (down and to the left). Compositing both the results gives higher image quality than is normally possible. This mode is not intended for higher frame rates, and can actually lower performance, but is instead intended for games which are not GPU-bound, offering a clearer image in place of better performance. When enabled, SLI Antialiasing offers advanced antialiasing options: SLI 8X, SLI 16X, and SLI 32x (8800-series only). A Quad SLI system is capable of SLI 32X antialiasing.
from wiki
post #15 of 25
Thread Starter 
So it is worth it with my processor? (plan to overclock)
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post #16 of 25
what res is your monitor?
post #17 of 25
Thread Starter 
1650x1200 ish if i remember correctly, Dont have the new rig yet. its going to be here tomorrow!!!!
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post #18 of 25
Quote:
Originally Posted by brherper View Post
1650x1200 ish if i remember correctly, Dont have the new rig yet. its going to be here tomorrow!!!!
Thats not a real aspect ratio, but if its anywhere near there I would recommend SLI.
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post #19 of 25
Thread Starter 
thats why I put ish behind it because I know its somewhere close to that.

Now, Is SLI a major upgrade to the point of not needing to buy the next series card for awesome performance on vista games?
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post #20 of 25
Quote:
Originally Posted by brherper View Post
Now, Is SLI a major upgrade to the point of not needing to buy the next series card for awesome performance on vista games?
No, especially if you want DX10. SLI really doesn't improve anything that much except at insane resolutions and detail levels (unless your card is teh :turd:, physically).
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