You’ll run hl2 on it no probs, christ I could run hl2 on a radeon 9000, the source engine is fantasic on a wide range of cards and supports DX 8,9 shaders (does it support 7 I cant remember now), and still looks fantastic at lower settings. All this talk of hl2….wheres my crowbar ??
If you have $12,051 on you how about a laptop in a suitcase….or by the looks of it, a 2 tonne black box
But yeah, stay away if you can from the 7200/400 GO series if your all about the gaming side of it, even a 6800 ULTRA GO would sit on its face and let one rip.