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nForce 4 Chipset SLi question

post #1 of 8
Thread Starter 
I have an Abit AN8-SLi mobo and it of course has the 'vanilla' nForce4 SLi chipset that splits the 16x PCI-e bus in half (two 8x PCI-e). Since they now have out the nForce4 SLi X16 chipset that has 2 full 16x PCI-e buses, does that mean I'm not getting the full perfomance of my video cards if I were to run SLi? Cuz if I'm not there is no way I'm gonna go for 2 cards without a mobo upgrade.
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post #2 of 8
Well to make it easier for yah I looked up true x32 Sli mobos.
No you wont get a peformnace loss but you wont get the best bandwith, but its putting two cards in one and going at x16 like normal for same bandwith. But the x32 mobos allow you to go double that for more bandwith which I think does give you a huge peformance boost.
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post #3 of 8
16 lanes of PCI Express to each graphics card in SLI aren't necessary for most applications or games, but since when have enthusiasts shied away from excess? The extra lanes certainly don't hurt.

Here's some research with benchmarks of the two SLi versions.

http://techreport.com/reviews/2005q4...i/index.x?pg=1

hth,

R
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post #4 of 8
Thread Starter 
TY for the article link. Very good info and comparison. For those too lazy to read it, it basically says for current generation graphics hardware, there isn't much of a difference. I'm assuming with heavy overclocking and next gen. hardware that might change, but for now I am safe. Now to look for those elusive invisible dollars I had layin around.
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post #5 of 8
I have never been much for the idea of "future proofing" and look to the future in the future. Too often has this term become a moot point as by the time the technology catches up to the future there are other mechanics and hardware that coincide with the future proofed technology.

R
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post #6 of 8
I bought the Asus A8n32 for this specific feature as I've had SLI (2 6600Gt's and now 2 7800GT's) for the better part of a year. The tests say the 32x boards are slightly faster in SLI (7%) but as much as 15% faster in single card solution. this has been verified at both Tom's Hardware, Anandtech and HardOCP. Something to do with the new controller I assume. So my SLI is a bit quicker and with future bios updates and driver improvements (after all my board has a unique NF4 driver set from nvidia) it may get a lot better.
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post #7 of 8
Thread Starter 
well it seems like I would be better off to put the roughly 200 dollars that would be spent on a X16 motherbaord towards another graphics card. This would, according to the previous post, cut the difference in the graphics capability of the two boards in half... from a 15% difference to a mere 7%. So thanks again for the info. My rig only cost me about 900 so even if it only lasts me a year or so its better than spending 2000 on a pc that I have to sit with for 2-3 years
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post #8 of 8
Quote:
Originally Posted by thenutty1
well it seems like I would be better off to put the roughly 200 dollars that would be spent on a X16 motherbaord towards another graphics card. This would, according to the previous post, cut the difference in the graphics capability of the two boards in half... from a 15% difference to a mere 7%. So thanks again for the info. My rig only cost me about 900 so even if it only lasts me a year or so its better than spending 2000 on a pc that I have to sit with for 2-3 years
Good thinking. I agree with you that for the money invested with regards to the price per % increase this upgrade would be more for personal choice than performance.

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