SLI Question

notrace

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Apr 1, 2009
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*i posted in Motherboard section as well but got no response

I was wondering, if I were buy this board;

http://www.newegg.com/Product/Prod [...] 6813188049

Along with two say, GTX 275's, would I have to run them both on the 8X lanes? There is only one 16X lane on that board correct? If I ran one of them on the 16X lane and one on the 8X would I get decreased framerates/usage?
 
^ The link is broken...
But a general answer for your question is No...there wont be any significant performance hit running 2 cards in x8x8 over a x16x16 as for now...because the graphic cards are just not powerful enough to utilize the full x16 bandwidth...But have seen in some reviews that for the next gen graphic cards like the HD 5870, there might be a hit running them in x8x8 compared to x16x16...
But for now just make sure the mobo that you have listed does not run the 2nd card at x4(Some latest P55 mobos do that)...then it would cripple its performance...
 

notrace

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Sorry about that, here's the motherboard;

http://www.newegg.com/Product/Product.aspx?Item=N82E16813188049

It seems like the only way to SLI with that board is 8x/8x though, am i right?
 
^ No...that board most probably would offer x16x16 if only 2 slots are populated as it is the case with most of the X58 mobos...
So only if populate more than 2 slots, they would switch to x16x8x8 mode...
Check the ASUS P6T...It has 3 slots, which would give this config x16x16x4 if all 3 slots are populated...

Just make sure from others too...
 

notrace

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Well that's good then, because I'm not planning on using more than two video cards...

So when I set them up into SLI, would i configure them to be running in 16X/16X mode I'm guessing? Does it matter which actually physical slot they're plugged into on the motherboard?
 
^ Hey just went through the reviews and it seems that the board runs @ x16x8(Better than x8x8) and doesnt give the full x16 to the second slot when only 2 cards are populated...
So I would suggest you take a look at the P6T, Gigabyte UD4P or even the Rampage Gene...they are also very good boards and offer full x16x16 bandwidth when 2 slots are populated...

Asus Rampage II GENE Core i7 / Intel X58/ DDR3/ CrossFireX & SLI/ A&2GbE/ MATX Motherboard
$15 off with code SUPERSTEAL15
http://www.ewiz.com/detail.php?name=MB-RAM2-GE

Gigabyte UD4P
http://www.ewiz.com/detail.php?name=MB-EX58U4P

ASUS P6T
http://www.ewiz.com/detail.php?name=MB-P6T
 

masterasia

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It says right on the board that there is only one PCI-E X16.
This is not a good X58 board compared to the others. I love the color scheme though.

What I don't like about the EVGA boards is that the high end boards still come with crappy onboard sound.
They should really include a X-Fi card.

I envy the pulsing red "E" on the Classified board.