I don't know if it is standard, but I know the XPS 410's PSU is capable of far more power than you would think from its rating. I wouldn't use it with the 8800GTX, but it is more than capable of powering an 8800GT, 3870, or any other card with a single PCIE 6 pin. In fact, the XPS 410 could even be purchased with the 8800GTX, though some people had problems because the power supply could only barely handle it.