For testing power consumption, we took our test system and plugged it into a Kill-A-Watt power meter. For idle numbers, we allowed the system to idle on the desktop for 15 minutes and took the reading. For load numbers we measured the peak wattage used by the system while running the OpenGL benchmark FurMark 1.8.2 at 1920×1200 resolution.
Power Consumption Results: When it comes to power consumption the HIS Radeon HD 5570 with 512MB of GDDR5 uses slightly more power than the NVIDIA GeForce GT 430! Not bad power consumption numbers here and, you can see, a GeForce GT 430 uses about 60W less power at full load than the reference NVIDIA GeForce GTS 450.