- Feb 3, 2013
- 16
- 0
- 18,510
Hi Guys! New member here could use some advice.
I've currently got an old Z77-G43 motherboard running an LGA 1155 i7-3770K processor. It's currently got a creaky old Radeon 7870 graphics card. A buddy of mine is looking to get rid of a couple of these (Link), for a really good price and I'm thinking of running them in crossfire as a cheap(ish) upgrade before I strip out the mobo and replace the lot. A couple of potential problems.
My mobo's spec says "1x PCie 3.0 x16 slot supports upto PCIe 3.0 x16 speed" and "1xPCie 2.0 x16 slot supports upto PCIe 2.0 x4 speed" (and is defo crossfire compatible). Normally I'd think there's no way that would work, except I've read that some similar boards run both slots in x8 mode in crossfire. Also, I looked on 3dMark.com (link) and there are a lot of people running the same setup (including x16+x4 mobos) who get circa x3 performance boost. My PSU is more than man enough for the job (for some reason I put a Corsair 750W job in years ago). So question is guys, will this proposed setup work or should I just take one of his cards? If so, will it get the kind of performance boost 3dmark seem to think or will it bottleneck like hell?
Cheers all!
R_V
I've currently got an old Z77-G43 motherboard running an LGA 1155 i7-3770K processor. It's currently got a creaky old Radeon 7870 graphics card. A buddy of mine is looking to get rid of a couple of these (Link), for a really good price and I'm thinking of running them in crossfire as a cheap(ish) upgrade before I strip out the mobo and replace the lot. A couple of potential problems.
My mobo's spec says "1x PCie 3.0 x16 slot supports upto PCIe 3.0 x16 speed" and "1xPCie 2.0 x16 slot supports upto PCIe 2.0 x4 speed" (and is defo crossfire compatible). Normally I'd think there's no way that would work, except I've read that some similar boards run both slots in x8 mode in crossfire. Also, I looked on 3dMark.com (link) and there are a lot of people running the same setup (including x16+x4 mobos) who get circa x3 performance boost. My PSU is more than man enough for the job (for some reason I put a Corsair 750W job in years ago). So question is guys, will this proposed setup work or should I just take one of his cards? If so, will it get the kind of performance boost 3dmark seem to think or will it bottleneck like hell?
Cheers all!
R_V
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