Can't find a Radeon HD 5800-series graphics card in stock? Don't want to wait for Nvidia's Fermi-based GPUs? Then EVGA has something for you: the GeForce GTX 275 Co-op PhysX Edition, a card that pairs a GeForce GTX 275 with a GTS 250 on the same circuit board for hardware-accelerated PhysX offloading purposes.
In games that support hardware PhysX, this strange contraption will let you use the GeForce GTX 275 GPU for graphics and dedicate the GTS 250 to PhysX computations. That setup ought to let you enjoy effects like extra debris, fog, cloth simulations, more realistically destructible objects, and so forth without a frame rate hit.
You will, however, incur a wallet hit, because EVGA currently charges $349.99 for GeForce GTX 275 Co-op PhysX Edition pre-orders. Of course, the product does include two separate GPUs with separate memory (for a total of 1280MB), all running at the same speeds as standalone GTX 275 and GTS 250 graphics cards. Also, a look at the box shot suggests this thing might come with a free copy of Batman: Arkham Asylum, Nvidia's latest PhysX poster child. The actual EVGA product page says nothing of game bundles, though, so don't quote us on that.