So, which is the better buy? Two Sapphire Atomic HD 3870s in PCIe 2.0 Crossfire or one ATI 3870 X2?
The Atomic comes overclocked at 825Mhz, a great bundle, and the card is single slot, so less heat. Looking at the VGA Charts, it looks like a 825Mhz 3870 is performs near a GTX Ultra (at least in DOOM3), so how would two Atomics perform vs an Ultra? http://www23.tomshardware.com/graphics_2007.html?modelx...
As for the 3780 X2, there are no benchmarks as of yet (at least that I have seen), but is there a chance that one 3780 X2s could blow two Atomics in crossfire away? The 3780 X2 also is a dual slot card and seems to need a 6pin+8pin, so more heat and needs more power.
There is talk that 3780 X2 will cost $400 to $500, and the Atomics will cost about $260 each. But, this is not taking into account retail markups and price gouging.
I would assume the 3870 X2 would scale better since it's two cores on one PCB though I don't know what a difference that would make.
However, I would wait anyway, maybe some price drops for 3870's after it's released.
I think our GPUs are CPU limited, We can't even use up the PCI-E 2.0 lane.. But 2 of those would make a good run for the money.. Not too much better than dual 8800GTXs.. But we need Toms hardware to get a nice Quadcore @ 4+ghz too give these things the juice to push some nice benchmarks out..