The Lightning utilizes 1792 MB of 448-bit, GDDR3 memory, enabling strong performance in demanding games. The GPU also improves on the power design of the GTX 275, with 10-phase PWM and dual-fan, five-heatpipe cooling, and voltage check points enabling advanced overclocking via the included Afterburner utility. Power consumption is high as a result, but MSi claims its Active Phase Switching technology can maintain over 90% energy efficiency. The graphics card supports HDMI, DVI, and D-Sub outputs.