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P67 NF200 vs no-NF200 SLI/CF

post #1 of 16
Thread Starter 
I know NF200 allows for "virtual bandwidth" 16x16, but is it any better than a P67 board running at 8x8 native? I am just wondering if there is any performance difference between the two if running on a dual card set up.

I don't really want to see results from another motherboard platform. This is strictly 8x8 on a P67 board vs 16x16 on a P67 NF200 board.
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post #2 of 16
The only difference that the nf200 chip makes is in tri-sli setups. With just two cards, it isn't worth it and adds extra latency, I think the performance is actually worse with the nf200 chip.
     
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post #3 of 16
Thread Starter 
Thanks, I was also thinking of the latency problem. Does this hold true for the UD7 as well? I remember seeing Sin's review of a P67A-UD7 vs a X58 board and it held identical results for the most part.
http://www.overclock.net/intel-general/910467-ultimate-sandy-bridge-oc-guide-p67a.html
Is the latency issue a quality problem or is it true for all NF200 boards?
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post #4 of 16
For 2 cards, don't even bother with the NF200. It will hurt performance.

For 3+ cards, you need the NF200.

It seems that both the UD7 and the MIVE have worked around the latency problem for 2 cards. (i think both boards just bypass the NF200 when running 2 cards)
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post #5 of 16
Thread Starter 
So the UD7 is just running 8x8 during SLI/CF? I don't think I'll ever do tri/quad-setups.
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post #6 of 16
I don't know.

I know for sure the Maximus IV does when using 2 cards. Not sure about the UD7 though.


Judging by sin's results, it would say it is 8x8x with 2 cards
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post #7 of 16
and you can't run trifire in any way without the nf200 at 8x4x4x just for the lulz?
post #8 of 16
Thread Starter 
Quote:
Originally Posted by xGTx;12529885 
and you can't run trifire in any way without the nf200 at 8x4x4x just for the lulz?

Yeah, what I'm saying is I don't want to waste 100+ bucks if I'm paying for just 8x8. Since I'm not doing tri-quads set ups.
Can anyone confirm the 8x8 on UD7? Thats the exact motherboard I'm looking at. Otherwise I'd just get a quality P67 board that supports 8x8.
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post #9 of 16
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post #10 of 16
Thread Starter 
Sorry if I sound like a complete newb, but yes or no on the 16x16? Seems like the answers no, but I have no idea. Lol
Does PCI 1 and 3 mean you can go 16x16?
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