I recently bought a HP desktop P6-2203A,that comes with A8-5500 + integrated HD7560D CPU and a discrete radeon HD7450 GPU card,You would think that the discrete GPU card would be compatible so I could use the hybrid crossfire but sadly no I have spent $1000 on this computer so that I can crunch data for Boinc, Poem@home,which uses GPUs as well as the CPU to crunch data. Ive tested both the integrated HD7560D and the HD7450 separately and they both have approx the same performance? So why would they in their wisdom include an incompatible GPU card that will not work in Dual Graphics/crossfire and is not any better than the integrated HD7560D ? The HD7450 is only compatible with Compaq laptops and is a re-branded HD6450.When I complained about this I was given the old runaround and eventually I was told I should have read the fine print.The dude from HP was patronizing, sarcastic, ect... Looks like Ill have to spend more $$$ for another card.