Here's the situation guys, I'm giving my 4890 to my brother for Christmas so it's time for a new card. But there is just one problem, I'm stuck between the 6850 and the 6870. I know that the 6870 is a stronger card, but I have read so many reviews that the 6850 has the OCing ability to get close to the 6870. I have a Gigabyte GA-EP45-UD3P which is a Crossfire board so that is what made be exclude the GTX 460 and 470 from the scenario, and yes, I defineatly plan to CFX in the future. What should I do? is the 6870 (being 70$ more) worth the upgrade and money? I have also heard they are really limited when it comes to OCing (1GHz on the core max, I have pushed my 4890 to that before and not really noticed a difference at all.)
This is the rig that I will be installing this card in:
CPU: Intel Core 2 Quad Q9550
RAM: 4 GB DDR2 1066
GPU: ATI 4890 for now
PSU: OCZ 700W
PS: would the 700W be able to power dual 6850's because the XFX cards on newegg only have one PCI Express plug for power.
If you're not afraid to OC and you enjoy doing it then get the 6850, if you just want to leave the card at it's stock settings then get the 6870, i'd get the 6850 and OC it because of the big price gap.
OCZ makes good psus and it should handle 2 6850's just fine