Before anyone does: I KNOW ABOUT THE PSU CALCULATOR. I HAVE USED IT. BUT THAT IS A THEORETICAL VALUE.
Okay, that said:
Amazon recently put the Sapphire Radeon 6870 on sale for an astounding $190 ($170 after rebate), and although I told myself I wanted to wait a bit to upgrade to Crossfire, I had to hop on the deal. I already have a 6870, yes. Now, my problem... the PSU I have is a 650W one. Specifically, this one. Gold Certified, good; but also modular (which I heard can reduce its efficiency a bit, maybe someone can dispel that rumor?). Anyways, it's only 650 watts.
Now, my current rig is like this:
CPU - Phenom II X4 955
Mobo - Gigabyte GA-890GPA
RAM - 4X2MB DDR3 RAM (running @ 1333MHZ)
HDDs - 2x1TB 7200 RPM Hard drives
ODD - DVD Super Multi
Fans - 1x120mm, 1x140mm (with LED), 2x200mm (both with LED)
And, of course, the GPU will be dual-6870s.
Now, I know I won't be getting any OCing out of this build, especially with CF'd 6870s, but I have to ask... will I even be able to get the 6870 pair? If anyone has successfully crossfired 6870s on a 650w PSU, that would be absolutely wonderful; I'd prefer actual examples of it working to "THE PSU CALCULATOR SAYS IT'S TRUE SO IT MUST BE TRUE".
Thanks in advance.
EDIT: Wow, can't believe I forgot some components...
Okay, that said:
Amazon recently put the Sapphire Radeon 6870 on sale for an astounding $190 ($170 after rebate), and although I told myself I wanted to wait a bit to upgrade to Crossfire, I had to hop on the deal. I already have a 6870, yes. Now, my problem... the PSU I have is a 650W one. Specifically, this one. Gold Certified, good; but also modular (which I heard can reduce its efficiency a bit, maybe someone can dispel that rumor?). Anyways, it's only 650 watts.
Now, my current rig is like this:
CPU - Phenom II X4 955
Mobo - Gigabyte GA-890GPA
RAM - 4X2MB DDR3 RAM (running @ 1333MHZ)
HDDs - 2x1TB 7200 RPM Hard drives
ODD - DVD Super Multi
Fans - 1x120mm, 1x140mm (with LED), 2x200mm (both with LED)
And, of course, the GPU will be dual-6870s.
Now, I know I won't be getting any OCing out of this build, especially with CF'd 6870s, but I have to ask... will I even be able to get the 6870 pair? If anyone has successfully crossfired 6870s on a 650w PSU, that would be absolutely wonderful; I'd prefer actual examples of it working to "THE PSU CALCULATOR SAYS IT'S TRUE SO IT MUST BE TRUE".
Thanks in advance.
EDIT: Wow, can't believe I forgot some components...