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6970 crossfire?

post #1 of 5
Thread Starter 
I've been debating on what is better overall.

6970s in crossfire or 570s in sli:http://www.hardocp.com/article/2011/...0_sli_review/1

according to most benches: [3 out of the 5 benchmarks the 570s wins out even at really high res]

**the 570s seem to have higher fps in most games regardless of it just having 1.2gigs of memory.

am i missing something here? i thought more memory means better performance as resolution gets higher?

570s in sli or 6970s in crossfire? which one is better in most games under most resolutions?
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Galbus
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post #2 of 5
Most of the time, at 1080P with normal amounts of AA, 2GB won't do much to give you better results. It starts being useful at 1600P or for surround/eyefinity setups with filters cranked up. Considering your monitor is a 1080P HDTV, 2GB isn't worth it. Also, the 570s give you PhysX (but who cares anyway...) but more important, 3D gaming support if you change monitors (VRAM doesn't matter for 3D since it just has to produce more frames)

Good luck with whatever you decide to get!
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post #3 of 5
Thread Starter 
Quote:
Originally Posted by Snowmen View Post
Most of the time, at 1080P with normal amounts of AA, 2GB won't do much to give you better results. It starts being useful at 1600P or for surround/eyefinity setups with filters cranked up. Considering your monitor is a 1080P HDTV, 2GB isn't worth it. Also, the 570s give you PhysX (but who cares anyway...) but more important, 3D gaming support if you change monitors (VRAM doesn't matter for 3D since it just has to produce more frames)

Good luck with whatever you decide to get!
thanks, i actually already have 570s... and i was just wondering why they did better at 5760x1200 than the 2gigabyte 6970s.

I've had a single 6970 and i was really disappointed. I was thinking of offering to trade my 570s for a couple of 6970s but i don't think i'll do it. more noise and heat, i wouldn't mind it if it gave me more performance but it doesn't seem it does.
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Galbus
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post #4 of 5
You would probably see different results if the test was redone after a few driver updates.

The 570 seems to outperform the 580 in several cases, which obviously shouldn't happen.

Some games are more so optimized towards AMD or nVidia.
    
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post #5 of 5
Quote:
Originally Posted by badatgames18 View Post
thanks, i actually already have 570s... and i was just wondering why they did better at 5760x1200 than the 2gigabyte 6970s.

I've had a single 6970 and i was really disappointed. I was thinking of offering to trade my 570s for a couple of 6970s but i don't think i'll do it. more noise and heat, i wouldn't mind it if it gave me more performance but it doesn't seem it does.
For up to 4800x900. GTX 570 SLI might be a better deal because 1.25GB still gives you enough room for that resolution. And don't forget that GTX 570 support PhysX for better experience. 3D Surround Vision is also an advantage (although your card might be struggle to render the polygon).

HD 6970 2GB Memory buffer gives you more advantage on 5760x1080 or higher. You can use higher AA. Radeon HD 6970 based performance is also slightly faster than GTX 570. Another slight benefit is lower power consumption than GTX 570.
    
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