Originally Posted by ZealotKi11er
My HD 5850 did 1Ghz/1250Mhz. Almost all HD 5850 with voltage control could hit 1Ghz. Also dont see many GTX460s over 900Mhz so given that stock they are @ 675Mhz vs 725Mhz (50Mhz) difference a 100Mhz difference OCed is going to make the gap even bigger. I have also owned GTX470 @ 800Mhz and HD 5850 is a better card.
Zealot you might note that the 460's have voltage ceiling locked in BIOS at either 1087 or 1100mV. With that voltage max overclock is regularly around 900Mhz core clock. It isn't uncommon to mod the BIOS and hit 1GHz though. Just not as many people go to the trouble, myself included. Clock for clock I'd still take the 5850 if I had to get rid of all my cards but one. The 460's scale better, have PhysX, and fold though.
Originally Posted by Markeh
If a 5870 is available at that price NORMALLY (the normal price is Â£157), I'm sold. But aren't OCUK and XFX's customer service meant to be terrible?
Power draw for the system with 5870 according to a power calculator is recommended to be 463w with my current dual core.
When I upgrade to the 965 (based on worst case scenario of 140w) that changes to 532w. Too much for my PSU methinks.
My real worry is the power draw. I don't intend on a PSU upgrade any time soon.
I'm no PSU guru but I'll just say that my SLI 460's run fine overclocked pretty heavy on a SeaSonic 620watt PSU. If that is a quality 530watt PSU I would be highly suprised to learn you had any troubles running a stock 5870 off it.
If there is question of the quality of the PSU, I'd replace it first.