MSI's latest appears to be a great fit for HTPC purposes, but packs a decent left hook in gaming.

"The MSI RX2600XT Diamond OC Edition already comes OC'd out of the box, 850/1150Mhz for the core and memory respectively. Neither RivaTuner or Powerstrip allowed us to make any OCs that had a visible impact on performance. ATI Overdrive allowed a 6Mhz OC on the core and 21MHz on the memory."



Link: Viper's Lair