Is my crossfire working properly?!

[aberchonbie]

I'm just wondering if my crossfire is working correctly because i ran gpuz v. 0.3.5 and it showed my second card running at pci-e 2.0 x4 not x16!!

running a q6600@3.0, 8gbddr2 800, antec tpq1000 psu, and most importantly a dfi lp dk x38-t2rb

I've attached a screenshot.. First gpuz is selected on the first 4850 and the second is on the other 4850.. Crossfire is detected but not at full pci-e 2.0 x16 speeds!

The BUS Interface on the second card reveals: PCI-E 2.0 x16 @ x4 2.0

Can you tell me if there is something wrong? Maybe there is something i need to turn on in BIOS? Not sure b/c in CCC Crossfire is turned on.. Can you guys help me?

 

[michaelmk86]

Your mobo support 2 PCI Express x16 slots (PCIE 1 and PCIE 3) - 2-way CrossFire at x16/x16 bandwidth, so you need to turn on something in the BIOS or something is wrong.

 

[ubernoobie]

should be right because x38 crossfire at 8x/8x (i think) so pci-e 2.0 x4 is pci-e x8

 

[aberchonbie]

uhh no.. pretty sure x38 is at x16 speeds..

 

[jsh1284]

Yeah, most mobos will clock down the bus speed in crossfire mode. Most will actually clock them down to 8x - 8x .. or sometimes 16x - 8x. But usually it's the first of the two. Your system is fine.