ugabugaz
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Radeon HD 4870 CrossFire troubles, please help figuring out? - 2008/08/13 11:43
I have two Radeon HD 4870 cards, one ASUS and one Gigabyte, and the system is running an Intel Core 2 Duo E6550 with 2GB GeIL Ultra 1066MHz memory on an ASUS Rampage Formula mainboard powerd by a Cooler Master 1250W power supply. But, I can't get CrossFire working correctly. When I tried on default CPU clocks, I got better results with CrossFire disabled, actualy with only one card than with CrossFire enabled. After I clocked CPU over 3.0GHz, CrossFire started working, but if I try 3DMark06, I got almost 19000 points, much better than with only one card.
Though when I try Crysis benchmark tests, CrossFire is working better than one card, only in modes with anti-aliasing and very high mods are off. In that modes on, one card works much better than CrossFire. I tried with the Catalyst 8.7 and 8.8 beta drivers, drivers from ASUS website, but everytime is the same story. So, any suggestion what should I do to get CrossFire working properly? Please help, this situation is driving me crazy! Thanks in advance for your answers!
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Galaxy 9800GT PCIe 512MB - Rev 01
