The ink’s not even dry on the ATI Radeon HD5870 cards, and AMD is already showcasing their latest powerhouse, the HD5870 X2.
The card will boast 3200 stream processors, a 512-bit memory interface, and requires extra power via a 6-pin and an 8-pin PCIe connector.
The clocks are yet unknown, but the Radeon HD 5870 X2 is said to arrive in November with a price tag of $500.
It features dual 40nm Cypress GPUs, and is codenamed “Hemlock”.
i would assume a 5870 x2 would perform better than two 5870’s in crossfire since the 4870 x2 outperformed two 4870’s in crossfire, just a guess
If you want to see how such the HD5870 X2 might perform, Guru3d has a Radeon HD 5870 CrossfireX Performance Review right here:
http://www.guru3d.com/article/radeon-hd-5870-crossfirex-test-review/
Basically it does very well in all tests except for Crysis, where it essentially ties (barely loses by 1 fps) to a 285 SLI setup.