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Is my crossfire working properly?!

Last response: in Graphics & Displays
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October 6, 2009 7:13:37 AM

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?
October 6, 2009 7:42:42 AM

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.
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October 6, 2009 12:10:32 PM

should be right because x38 crossfire at 8x/8x (i think) so pci-e 2.0 x4 is pci-e x8
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October 6, 2009 3:27:33 PM

uhh no.. pretty sure x38 is at x16 speeds..
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October 6, 2009 3:32:31 PM

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.
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