Originally Posted by
StormPC
Not really. The X1800XL has the same 1.4ns Samsung DDR3 and R520 GPU as the X1800XT so it overclocks like mad, especially on the RAM. It also has the ability to raise the VGPU, MVDDC and MVDDQ (voltages) with sliders in ATITool, as well as fully software controlled fanspeed so you can make it as loud or quiet as you like.
ATI is much more reliable also. I have less problems with them which means my customers spend more time using their conputers and less time calling me about problems.