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Ati crossfire question

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acer.tr Posts 3 Registration date Friday October 10, 2008 Status Member Last seen February 1, 2009 - Oct 14, 2008 at 09:46 AM
xpcman Posts 19528 Registration date Wednesday October 8, 2008 Status Contributor Last seen June 15, 2019 - Oct 14, 2008 at 04:19 PM
Hey there,
Can anyone help me in this issue please? ASUS P5Q Pro ATX LGA775 P45 DDR2 2PCI-E16 CrossFire 3PCI-E1 2PCI SATA2 Sound GBLAN eSATA Motherboard does support ati 4870 crossfire yes or no? in one review I have seen that it does not support 16-16 crossfire am I getting confused in some way?
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xpcman Posts 19528 Registration date Wednesday October 8, 2008 Status Contributor Last seen June 15, 2019 1,824
Oct 14, 2008 at 04:19 PM
I does NOT. it's a chipset issue with the P45<

P35 = cheap, good overclocking, cheap, PCI-E 1.1. slot, crippled Crossfire (x8 + x4)
P43 = cheap, only overclocks to 400 fsb, PCI-E 2.0 slot, no crossfire
P45 = moderate, good OC, PCI-E 2.0 slots, some like P5Q-Pro have x8,x8 crossfire
X38 = expensive, good OC, PCI-E 2.0 slots, x16 crossfire
X48 = expensive, good OC, PCI-E 2.0 slots, x16 crossfire

So on the cheap end, P35 for moderate OC and P43 if you don't care about OC but want PCI-E 2.0

P45 in the middle ground

X48 in the high end (why spend $200+ for older X38?)