I really agree with Overstar and Tomas, but not with the article concerning the P6T7. Here is what is done in this case : http://www.behardware.com/html/news/?date=28-08-2008#9908
This obviously lead to poor performance when everything is used, 1st of all because of NF200 bandwidth I think (more than the quite huge 3ch DDR3 or QPI bandwidth). This is confirmed in a few SLI benchmarks when using NF200.

As Tomas says, the only way is using a 2 chipsets config, associated of course with multi socket. For Intel it is more likely to be the 5520 chipset than the X58, the 1st one being the workstation version of the 2nd. (see diagram here http://www.behardware.com/html/news/?date=31-03-2009#10143)
This is done in a few machines, like the HP Z800 (dual "Gainestown" Nehalem EP, dual "Tylersburg" chipset). I was looking for the same thing for my work but Dell don't have anything like this. For a cheaper price than the expensive Z800, you can make it yourself, for ex on a Supermicro XD8AH+ (which is a EE-ATX board, a bit bigger than the Ext. ATX standard, so be careful for your case choice) or the smaller Tyan S7025WAGMZNR with less slots but same dual chipset base.

If you really want fat pipes on your motherboard you should buy a workstation from HP or Dell. The simply combine TWO x58 chipsets on the same motherboards. (Although the x58 is called something else in Xeon systems). Both the CPU and chipset in LGA1366 systems are borne with two QPI interfaces each. Unfortunately one of them is disabled in the desktop version.
Asus is more the cheap hacks for punters company and they don't mind cheating. Amongst other things you should never enable turbo mode on Asus motherboards. They simply abuse it for plain overclocking and don't even ask you first.

Best regards
Tomas

Quad CrossFireX has been around for a while now on the AMD 790FX chipset which will certainly support upto 4 graphic cards in CrossFire. The top nVidia chipsets will also support 3 way SLI and it is mentioned in the article that this board has two of the nVidia nForce 200 chipsets to essentially drive 2 sets of SLI'd cards and would be very good for several Tesla cards.

What some people seem to fail to remember though, is that PCI-Express x16 slots will support ALL PCI-Express cards right down through 8x, 4x and 1x speed devices such as network cards and SAS/SATA RAID controllers. PCI-X used to be the slot of choice on high end workstation and server boards for RAID and network cards, but PCI-Express is faster and much more versatile in that it is commonly found on all motherboards in some form meaning more devices are made for the interface including sound cards and video cards.

Only 36 PCI-Express lanes does not seem like much, but not all cards used on this board will use up 16 of those lanes... Personally though I think it would have made more sense to have the 4 blue slots as x16 times, and the black ones could have simply been x8 or x4 slots with the amount of available bandwidth on the board...

Read the linked article and was confused by this:-
"The board was completely stable throughout testing and the ability to run four dual-GPU cards together will bring the ultimate in performance in games anyway."
Have I missed something can either CrossfireX or SLi now use more than 4 gpu's ?

I don't see what the benefit of having seven physical x16 PCIE slots would provide if the X58 only provides 32 lanes intended for the slots. I went to reading the article wondering how the heck Asus pulled it off.

Still, if they price it right, why not?

Its 36 Lane Main, so only 2 16X cards will perform at TOP. Specs Are Same for half Dozen X58 Mains. Even though Memory IS Limited by something called "processor", Having ALL that ober specs makes STANDARD setting MUcH More reliable.

You Do Get 4 Lan Ports. For Money Its Blop, VERY, Very, HOT Blop.

. AMD 790FX & Similar AM3 Mains have MUCH more value, Its UNLIKELY only difference peson would see IS $4000 More in price of cpu & memroy & all those cards. So for $4,000.00 More You Get NO More Unless Burning Out Your System Was Idea.AS IT JUST WON'T UBER TAKE IT, EXCEPT MAYBE IN IMAGINATION, IS theUltee' IMAGINATION. Pay Big $$$ for TOP Stuff & Set It To STANDARD Is RESult.Faster, YES, So What.MOSTLY WASTE. Cost of SAS & PovertySpecs, Might Make Grown FeMale, Cry.

vondrashek

ssd = high £ + low capacity + unreliable

therefore:

ssd buyer = mug