evganerd
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I noticed a lot of people going for the ASUS P8P67 EVO LGA 1155 board. When going over the specs, I realized that there is no NF200 chip on it. If using two video cards, will the performance degradation be noticeable at all? They'll be both running at 8x / 8x. Using the NF200 chip, it will seem as if both cards are running at 16x/ 16x when in reality they aren't. Either way, if there's little to no difference in gaming between the two modes, what would be the advantage of having NF200?
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steveswarts
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Re:Question about NF200 chip
2011/01/20 20:51:58
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Everything i have read about P67's PCI-e lanes at 8x 8x show better numbers with out a NF200 chip. Compared to a x58 16x 16x with a NF200.
Sure 16x 16x is nice on x58 but its still on 8GB/s and the added latency from the NF200. also the lanes on the P67 are 16GB/s
Correct me if i'm wrong. Just off the top of my head
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dozer3000
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Re:Question about NF200 chip
2011/01/21 08:09:09
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steveswarts
Everything i have read about P67's PCI-e lanes at 8x 8x show better numbers with out a NF200 chip. Compared to a x58 16x 16x with a NF200.
Sure 16x 16x is nice on x58 but its still on 8GB/s and the added latency from the NF200. also the lanes on the P67 are 16GB/s
Correct me if i'm wrong. Just off the top of my head
That's right, but the difference is small. NF200 is a multiplexer, so it took a little bit of the latency .. 2x GTX 580 with NF200 works like a dual-card over 1x 16x to the cpu, but there is the latency of the NF200. Without NF200 you only have real 2x 8x - but without the latency problem. I've tested a lot on the P55 FTW200 and.. at the end, the difference is very small. NF200 is needed for tripple SLI... (8x 8x 8x to 1x 16x) - for dual SLi it isn't necessary
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_NickM
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Re:Question about NF200 chip
2011/01/21 10:05:32
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steveswarts
Everything i have read about P67's PCI-e lanes at 8x 8x show better numbers with out a NF200 chip. Compared to a x58 16x 16x with a NF200.
Sure 16x 16x is nice on x58 but its still on 8GB/s and the added latency from the NF200. also the lanes on the P67 are 16GB/s
Correct me if i'm wrong. Just off the top of my head
There is no nf200 on X58 by default. You can have two x16 lanes native from the chipset.
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atm743
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Re:Question about NF200 chip
2011/01/21 22:03:46
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http://www.tomshardware.com/reviews/p55-crossfire-nf200,2537-11.html this should clear up some things. (if you dont feel like reading) the nF200 chip will only be used if you are running more than 2 cards. 2 card SLi will use the native 8X 8X modes. if you do 3 SLi it will ballance out all 3 slots so they all do 8x in instead of 2 at 8x and 1 at 4x
post edited by atm743 - 2011/01/21 22:05:55
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whitnasty1
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Re:Question about NF200 chip
2011/01/21 22:21:11
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Would this still allow me to run two 570's as well as a sound card, or is that going to mess up my bandwith... i currently have a soundblaster x-fi PCI card, and I know the EVO has a PCI slot... will I be able to run all three of those things? Falcon, do you know if that board will fit all of that on there or am I going to have to buy a PCI-E 1x sound card, (is there enough room on the board to run 2x 570's and a sound card?), and if I do is it going to mess up the bandwith to where I will take a hit in performance? Thanks for all the help guys, just trying to get everything lined up before I make my purchases.
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atm743
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Re:Question about NF200 chip
2011/01/21 22:26:06
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I don't see why not. i think the sound card will default that one pci slot to 1X even if its a 16x slot being that its a sound card and may just ask for 1x.
thats a good question though. maybe falcon can take 2 of his 580's from his sr-2 right and put a sound card in it and test it for ya :)
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stealthrt2007
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Re:Question about NF200 chip
2011/01/21 23:02:16
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This review is crap,first off they are testing with 2 different chipsets and processors,granted they are running at the same speed with the same ram.They are comparing an enthustiast class motherboard without NF200 against 2 solid midrange gamer motherboards with NF200.Thats like comparing apples to oranges.I can almost bet the X58 EVGA board is giving the cpu cleaner more efficient power,that in itself could easily accomodate the 1 to 2 % in fps difference.Id like to know where this so called NF200 latency is coming from...I own a board with a NF200 chipon it "EVGA 750i FTW" and i dont see any latency when running SLI. Dont believe everything people tell you!!! Yes that even goes for review sites,especially TomsHardware.
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atm743
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Re:Question about NF200 chip
2011/01/21 23:18:35
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well if that so call midrange motherboards with the nF200 are getting +- 2 fps compared to the clean power the X58 gives out, that shows its doing a pretty damn good job.
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stealthrt2007
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Re:Question about NF200 chip
2011/01/22 01:23:49
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Well i honestly hope you dont believe a NF200 chip allows you to do 8x,8x 2 way SLI.The NF200 allows 16x,16x,and 16x,8x,8x if you have a 3rd card.There is next to nothing for latency,all the NF200 chip does is add 16 addition PCI-E lanes to whatever the cpu supports,which is usually 16 lanes.Still its a stupid comparison.
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atm743
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Re:Question about NF200 chip
2011/01/22 02:06:05
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stealthrt2007
Well i honestly hope you dont believe a NF200 chip allows you to do 8x,8x 2 way SLI.The NF200 allows 16x,16x,and 16x,8x,8x if you have a 3rd card.There is next to nothing for latency,all the NF200 chip does is add 16 addition PCI-E lanes to whatever the cpu supports,which is usually 16 lanes.Still its a stupid comparison.
from what i thought, the NF200 would only kick in one you add a 3rd card. P67 can handle 2 cards in sli at 8x 8x fine. third card is where the NF comes in handy
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CharmedLover1984
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Re:Question about NF200 chip
2011/01/22 07:11:46
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In reality, for practical applications including gaming, x8/x8 is more than enough. The problem with standard, non-NF200 boards is, they can't run 3-Way SLi. So for those of us extreme enough to want it, there's simply no option BUT to go with an NF200 board, if you're going Sandy Bridge. This gives you x16/x16 in SLi, and x16orx8/x8/x8 in 3-Way SLi, if I remember correctly.
The whole x8/x8 or x16/x16 thing really isn't as big of a thing as some people think, but I have a feeling with dual-GPU cards, like the coming 595, or perhaps higher end 6xx-series cards coming this year sometime late, will likely start to show just why we'd want x16 over x8... course by then we'll be dealing with PCI-Express 3.0 right? lol
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dmoheban
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Re:Question about NF200 chip
2011/01/23 09:28:31
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☄ Helpful
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evganerd
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Re:Question about NF200 chip
2011/01/23 09:37:39
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mack4033
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Re:Question about NF200 chip
2011/01/23 10:23:29
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Nice information about Sandy....
Thanks,
Mack4033
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HeavyHemi
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Re:Question about NF200 chip
2011/01/25 23:20:53
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