For me there are only driver issues if I was careless when updating them. if updating to 5870x2 is faster than 4870x3 I might consider it.
I bought the 4870x2 at launch and it took ATI 4 months to improve their drivers. They had a lot trouble with crossfire and speed step. disabling catalyst AI was not a fix for the X2 because it disabled the second gpu.
Asus Z9PE-D8 WS with 64GB of registered ECC ram.|Dell 30" LCD 3008wfp:7970 video card
LSI series raid controller
SSDs: Crucial C300 256GB
Standard drives: Seagate ST32000641AS & WD 1TB black
OSes: Linux and Windows x64
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