I am currently in a situation in which i need to decide if im going for a motherboard which supports SLI x8 x8, or x16 x16. Money is not an issue in the decision. Only performance.
My question is, how big of a difference (decrease in performance) is it to run 8800GT in SLI on x8 x8, like on an Asus P5N-E SLI motherboard, with nForce 650i chipset, as opposed to a SLI x16 x16 on an Asus P5N32-E SLI motherboard, with nForce 680i?
Better check your info, Im 99% positive the plus version (650i) is 16X on both slots. Not to mention everyones "sweet" 680i boards cant use the new intel chips (45nm) hahaha, they got tricked. You decide, I have the plus version and Im very happy with its performance. Infact, I have had some of my freinds with some of the other boards(p35, 680i), and their upset of the overclocking ability, the plus version has many incraments (spelled wrong) and variability to its features. Good luck.
I read the link posted by Maziar (very interesting!)
But the review of the board featured is a couple of years old.
I just wanted to query something that I am considering.
I've just ordered a replacement board for my AM2 system which is SLi compatible (570 SLi chipset) and just wondered whether it would bottleneck SLi'd GTX's on it?
I currently have an XFX GTX but would buy another as I'm sure prices are going to drop as the G92 GTS is such a stron performer!
Basically, is x8 SLi (which I believe is what the 570 chipset is capable of) going to bottleneck GTX's, and if so, to a point that there would be little benefit?
Thanks very much
That link was really useful!
Basically, I'd have been a mug to go for the (significantly) more expensive 590 SLi chipset! The 570 has everything I need, so it really would have been a waste of £50 (approx $100) for the 590.
That £50 will go nicely towards another GTX
I'm surprised the difference was as much as 2/3 fps! Just shows x8 bandwidth is still plenty for modern cards!
I have a very similary question.
I will have to by a
Gigabyte GA-P67A-UD4 Socket 1155 USB3 og S-ATA3
to use SLI, but will there be any difference in the SLI changing both express x to 8, when the two pcex are in use?
Reason for buying this mobo is that seller only has this which can be used with SLI and the i5-2500 cpu.
Going X8/X8 or 16x/16x won't make a difference. Both X8 and x16 bandwidth is theoretical so it can never be achieved. Have no clue why they do benchmarks on different systems because the small difference are thanks to the triple channel ram of the x58. Intels PCI-E whitepaper stated using 3 way in 8x mode the overhead and latency drops the third device down to 70 percent performance. All the board manufacturers did was they added a chip which reduced the latency and overhead