Corsair showed off their upcoming flagship power supply the 1500W AX1500i at CES earlier this year. Well after getting sent off to be 80PLUS certified the unit has received the 80PLUS Titanium certification, that is a notch above the 80PLUS Platinum rating.
When tested the unit stayed at 91.23% efficiency at 10% load, 92.63% efficiency at 20% load, 94.04% efficiency at 50% load, and 91.34% efficiency at 100% load, staying above 90% at all test scenarios. The unit itself is 100% modular and offers quite a lot of connections. This power supply should have no problem running 4-way CrossFireX or SLI setups. The unit also supports Corsair LINK giving you the ability to monitor the power supplies vitals. The AX1500i is expected to launch later this year for around $450.