Topic Title: Upgrade from 5970 question
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Created On: 01/28/2014 06:31 PM
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 01/28/2014 06:31 PM
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Quantumfield
Peon

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Joined: 01/28/2014

I'd like to upgrade the 2 x HD 5970's in my Alienware Area 51.  I was wondering what kind of performance improvement I could expect if I swapped them out with 2 x r9 270x's.  Any help would be appreciated.  Thanks!

 01/28/2014 06:57 PM
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stumped
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Here are benchmarks for all high end cards...it will give you some idea.

http://www.videocardbenchmark.net/high_end_gpus.html



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 01/28/2014 07:41 PM
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Quantumfield
Peon

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Very helpful... Thanks so much!

 01/28/2014 09:08 PM
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black_zion
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Roughly 1 HD 5970 = 1 HD 7970/280X, so I would look at a single 290X if you want super high performance, or a single 280X if you only have 1 1920x1200 or lower display.

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ASUS Sabertooth 990FX/Gen3 R2, FX-8350 w/ Corsair H60, 8 GiB G.SKILL RipjawsX DDR3-2133, XFX HD 7970 Ghz, 512GB Vertex 4, 256GB Vector, 240GB Agility 3, Creative X-Fi Titanium w/ Creative Gigaworks S750, SeaSonic X750, HP ZR2440w, Win 7 Ultimate x64
 01/30/2014 10:23 AM
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Thanny
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A single R9 280X (i.e. 7970) is somewhat slower than a single 5970, in terms of processing power.  If it's a standard 5970, however, you're stuck with 1GB of memory, which can easily be swamped at higher resolutions by modern games.  In those situations, the 7970/280X with 3GB would be superior in all respects. 

The other factor is that two-GPU Crossfire will scale much better than four-GPU in the vast majority of games.  That would make two 7970/280X cards superior in most situations to two 5790 cards.

The 7970/280X is also around 30% faster than a 270X, so going from two 5970's to two 270X cards would be a serious net loss.

 01/30/2014 11:05 AM
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black_zion
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It depends on the games. I've never noticed a decrease in performance from my 5970, but several increases. Then again this 7970 is clocked at 1125/1550, whereas my 5970 topped out at less than that.

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ASUS Sabertooth 990FX/Gen3 R2, FX-8350 w/ Corsair H60, 8 GiB G.SKILL RipjawsX DDR3-2133, XFX HD 7970 Ghz, 512GB Vertex 4, 256GB Vector, 240GB Agility 3, Creative X-Fi Titanium w/ Creative Gigaworks S750, SeaSonic X750, HP ZR2440w, Win 7 Ultimate x64
 01/30/2014 05:37 PM
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Thanny
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Going from a 4GB 5970 (no reduced clocks, so same as a pair of 2GB 5870's) to a 7970, I definitely noticed some performance drops, though not in all games.

As a whole, though, I'd say any game that was playable with the 5970 was also playable with a single 7970.  If I had to choose between the two, it'd be a single 7970, if for no other reason than that there are some games which don't handle multi-GPU setups properly.

In this case, however, we're talking about two 5970's, which will definitely be faster than a single 7970 in all respects, unless the game uses more than 1GB of graphics memory. 

So, two 5970's to two 7970/R9 280X cards is acceptable, but I wouldn't expect an increase in performance in all games, or even most.

I'd expect a decrease across the board with two R9 270X cards.

 

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