Benchmark Reviews posted a review on the EVGA Geforce GTX275 CO-OP Video Card

NVIDIA and ATI dominate the market for gaming-oriented video cards. But neither company sells video cards directly to the consumer; rather, they produce "reference designs" that are manufactured by a number of "partners". Most partners simply produce the reference design and slap an identifying sticker on the card's cooler; although some might replace the reference design cooler with a quieter or more powerful solution, with few exceptions there's little to distinguish one partner's version of a specific card from another partner's version of the same card. EVGA breaks out of this rut with their EVGA GTX 275 CO-OP PhysX Edition, model 012-P3-1178-TR, which combines NVIDIA GTS250 and GTX275 GPUs on the same card, and Benchmark Reviews takes it around the block to see what it's got.

EVGA Geforce GTX275 CO-OP Video Card Review