not entirely true, ive seen a notebookreview article saying that the first batch of chips were flawed, that included in the benq laptops too.

i didnt know about the article when i bought my laptop, but it says revision a2 when i boot up gpu-z. the only affected chips are running on revision a1. it will run at 80C when normal too, which is shortening the life of the graphics card itself. a bios update was then available, to speed up the fan. whirling it like crazy. then again, if ur using revision A2, u would be fine. try and download gpu-z to see for urself

geforce 8600gt is a class 2 graphics card where as the 3450hd is a class 3. its comparable to the 8400gs graphics card