What is a good graphics card for a 250w power supply with 16A on the +12V. I was thinking the maybe the low profile version of the radeon HD 6670, according to ATi 400 Watt power supply minimum, but according to AnandaTceh total system power consumption under load was around 199 on a i7-920 which is 130w compared to 65w for my athlon 64 x2 4400 Brisbane . http://www.anandtech.com/show/4278/amds-radeon-hd-6670-radeon-hd-6570/15