Originally Posted by LostRib
My MB can do 8x/8x crossfire, but I'm not sure 4850 CF is the best option. Although it would be cheaper, but i thought it might be worth more to put that money towards an entirely new card.
How far can a 6870 OC over a 6850 OC?
Well, here are the benefits of each:
- can split them off into two secondary machines when you move on.
- Single card means no CF Issues.
(not a big issue nowadays, but still an issue with newer games that AMD hasn't had the time to adjust the drivers for / any game you play in windowed mode)
- Can add a second 6850 later for cheapness.
(Although by this logic, you still ought to go with the 4850)
- Lower power draw
- Lower number of PCIe power cables required.
- Less space taken up inside the PC.
(Which will mean that it shouldn't get as hot)
- Directx11 support
- New technology comes with new warranties
I can't think of many more, but my point is that the cheaper and the faster tend to be what most people want. If the others (especially Dx11) bother you, then consider the 6850. If not, the 2x4850 will be about as fast as a 6870 (maybe a touch faster, but we'd probably be talking in the region of 1-3%).
Why do you want a new card? Depending on the prices I could find a 4850, I'd probably crossfire it. That is, if my PSU could handle it. Yours should handle it easily, I think.