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Tom's Hardware > Forum > Graphic & Displays > Graphics Cards > [Solved] Can i run Sli with 1 gpu in 16x and 1 in 8x?

[Solved] Can i run Sli with 1 gpu in 16x and 1 in 8x?

Forum Graphic & Displays : Graphics Cards [Solved] Can i run Sli with 1 gpu in 16x and 1 in 8x?

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bharathgdk   01-08-2012 at 07:37:02 PM

Hi

I cant place my 2 gpus in 16x as they are too close and overheating is occuring

So i have a 8x port with there be any drop in gpu performance (SLI) by doing so?

Thank you


GTX 560Ti 1GB

Gigabyte X58A-UD5 Mobo

i7-950

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yyk71200   01-08-2012 at 08:34:36 PM

Moving from 16x to 8x causes either very small or no performance drop since current bandwidth utilization is not saturated even by most powerful graphics.

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inzone   01-08-2012 at 08:38:59 PM

The two slots will most likely both run at x8 anyway.

Note: The PCIEX8_1 and PCIEX8_2 slots share bandwidth with the PCIEX16_1 and PCIEX16_2 slots espectively. When PCIEX8_1 is populated with an expansion card, the PCIEX16_1 slot will operate at up to x8 mode; when PCIEX8_2 is populated with an expansion card, the PC IEX16_2 slot will operate at up to x8 mode)

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xtreme5   01-08-2012 at 08:51:48 PM

running two cards in SLI mode then x16 become x8/x8 mean both card take x8 speed.

Message quoted 1 times
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iArereya   01-08-2012 at 08:54:42 PM

If overheating is a problem, try increasing the fan speed. This may, in turn, increase noise levels though.

Message quoted 1 times
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bharathgdk   01-08-2012 at 08:58:32 PM


the gap is too less.. didnt help tried all possible ways!.. without adding any extra fans ,etc...

i also have a post with dat issue.. no soln obtained.. (lets leave dat here :) )





iArereya wrote :

If overheating is a problem, try increasing the fan speed. This may, in turn, increase noise levels though.


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bharathgdk   01-08-2012 at 08:59:44 PM


So is that Ok... or like i have a drop in performance?..that ll affect my gameplay


xtreme5 wrote :

running two cards in SLI mode then x16 become x8/x8 mean both card take x8 speed.


Message quoted 2 times
Reply to bharathgdk
amuffin   01-08-2012 at 09:00:40 PM

bharathgdk wrote :

So is that Ok... or like i have a drop in performance?..that ll affect my gameplay


There is a 1% difference between 16x/16x and 8x/8x.

------------------------------ Nap time!-amdfangirl
 Reply to amuffin
xtreme5   01-08-2012 at 09:02:07 PM

if you take my advice it's better than two gpu's. get single gtx 580 instead of two this should great idea for gaming as well as for other task no heat problem!

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xtreme5   01-08-2012 at 09:04:26 PM
Best answer

bharathgdk wrote :

So is that Ok... or like i have a drop in performance?..that ll affect my gameplay


no drop in performance you didn't feel the drop in performance everyone using x8/x8 mode instead of x16/16 there is only 1 or 2% difference.

 

i'm running two gtx 580 in sli x8/x8 with 2500k everything rockssss!!

Message quoted 1 times
Message edited by xtreme5 on 01-08-2012 at 09:05:54 PM
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bharathgdk   01-08-2012 at 09:09:14 PM

Thanks a lot mate!..


xtreme5 wrote :

no drop in performance you didn't feel the drop in performance everyone using x8/x8 mode instead of x16/16 there is only 1 or 2% difference.

i'm running two gtx 580 in sli x8/x8 with 2500k everything rockssss!!


Reply to bharathgdk
inzone   01-08-2012 at 09:10:55 PM

You can't notice a 1% difference in gameplay with the naked eye you would need an instrument to measure the difference in performance. Most motherboards are made for the shift from x16, to x8 and x8 and the performance dosen't suffer.

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