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Support for ATI CrossFireX™/NVIDIA SLI technology
* The PCIEX16 slot operates at up to x8 mode when ATI CrossFireX™ is enabled.
I'd like to get the one with the nvidia add on chip to enable full 16x bandwidth for 2 cards, which would mean a gigabyte UD7 for futureproofing. I don't have the same faith as other people that 8X will be good enough for an SLI setup going out a few years into the future, which is as often as I upgrade. Really I should just wait for 2011, but that remains to be seen. Most will get the gigabyte UD4 for the basic SLI capability (16X/8X) ... I don't blame them since there's a 150 dollar price difference.
will the Gigabyte GA-P67A-UD4 support both crossfire and sli? their website states:
...so i assume it supports both, but i'm pretty wet behind the ears when it comes to this stuff.
edit: read further on in a review i had open, looks like it does indeed support both.
The chip you're referring to is the NF200. And a word of warning it doesn't magically create more bandwidth. It's more of a regulator of the available bandwidth in the PCI lanes. To make it simple the NF200 is able to boost performance, however if something goes wrong it causes more problems as well.
In short if you're looking to do a heavy XFire/SLI build you're better off waiting for LGA 2011 if possible.
The end of the review bugged me - he complained that all four memory slots are the same color, so that people who don't read the manual won't be sure how to arrange the memory? Come on, that's stupid. Having all the slots black matches the black PCB and expansion slots anyway.
I'm probably going to get a 2x vid card setup either GTX 570 or 69x0.
Should I be worried about this 16x/8x thing?
The chip you're referring to is the NF200. And a word of warning it doesn't magically create more bandwidth. It's more of a regulator of the available bandwidth in the PCI lanes. To make it simple the NF200 is able to boost performance, however if something goes wrong it causes more problems as well.
In short if you're looking to do a heavy XFire/SLI build you're better off waiting for LGA 2011 if possible.
Great post, agree on all counts... Also, 16/8 isnt a problem anyway for anyone who does want to go SLI on these boards.
No, not really. Very, very small performance difference between x16x16 and x8x8.
I'm hearing three different things on this.
I'm probably going 2x 6950's...
I read that [h] article that the performance wasn't noticeable "in game" but performance metrics wise it was slightly visible....
I don't want to bite myself in the ass though. Would I be better off just buying what's out there now?
So I'm looking at a 3% FPS difference in penalty if I go with Sandy Bridge in January over i7 motherboards now?
I can't answer your question but perhaps some of that 3% would be offset by an x% increase due to the higher IPC of the new CPUs?
Just thinking out loud....
Oh for some reason I thought 16x/16x wasn't available. I guess a lot of people just don't want to pay the premium for 16x/16x?I'd say this is probably accurate. You'll lose potentially 3% over a hypothetical full x16 Sandy Bridge solution. How that compares to an existing i7 with full x16 is yet to be determined. That being said, doesn't the Gigabyte UD7 (and others from other manufacturers) offer full x16x16 SLI? You have to pay for it, but it is available.
Yeah I think recall someone saying the UD7 was something $340 vs the $240 for the UD5 and $200 for the UD4 (I could be wrong but those are the ballpark figures I recall seeing).
Then the next one, and the next one. Meh. There's no future proofing. It's best to get what there is now, and upgrade later.For those who worry about future proofing, better wait for LGA 2011 (PCI-E 3.0).
For those who worry about future proofing, better wait for LGA 2011 (PCI-E 3.0).
Apparently 2% difference if that.Are we anywhere close to saturating a x16 2.0 link (8 GB/sec)? I don't think there is any need to wait for 2011 for PCIe bandwidth.
So I'm looking at a 3% FPS difference in penalty if I go with Sandy Bridge in January over i7 motherboards now?
Apparently 2% difference if that.
Only if using two GPUs, and only if they are very good ones. 2% performance drop due to bandwidth on a 480GTX is probably no performance hit on a lesser card that doesn't require as much bandwidth over PCIe.
So to be clear the scale is UD3-UD7 and UD7 is the top end bracket, right?
What are YOU guys getting?
What are YOU guys getting?
whats the difference from ud3,ud3r or ud3p? why is everyone getting ud4?
whats the difference from ud3,ud3r or ud3p? why is everyone getting ud4?
So basically, "don't worry about 16x/8x?"lol @ this thread.
The % increase of running 16/16 instead of 16/8 with a NF200 is offset by the additional latency. Most NF200 boards are SLOWER than non-NF200 boards. The only reason to ever have a board with an NF200 chip is if you must run QuadSLI/QuadFire. Otherwise it is a total waste.