28.8k is HIGH. Phenom won't touch it. i7 stomps all over my scores at similar clocks. Fastest non quadfire phenom score on hwbot is 26,684 with a 4870x2 @ 809/920 and a 5390mhz phenom 2.

Hmm... I know you can raise the limit with a modded BIOS, but some genius at ATI decided to prevent the drivers from installing with a modded BIOS around 8.9 or 8.10. Took me an entire day to find a BIOS that would let me install drivers. Leave it to ATI to F everything up...