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GTX 570, HD6950, HD6970 - with i5 2500K

Last response: in Components
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October 6, 2012 12:06:08 AM

Hi,

I have a Corsair VX450 PSU that I bought in January 2008, that's almost 5 years ago.
I currently have an HD 6950 2GB and am thinking of switching to an HD6970, or a GTX 570, or just keeping it. :) 

Anyways, I'm gonna replace my CPU to an i5 2500K soon.

Will my PSU handle these cards, or at least the 6950?

a b ) Power supply
October 6, 2012 12:09:48 AM

Your PSU should be able to run an HD6950. I would most likely want to swap it out if you're going to install a GTX570 or HD6970 in there, however :) 
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October 6, 2012 12:12:16 AM

How do I know I am not limited by the PSU? It's very efficient (some review mentioned it pulls 570W according to some lab's test) but also very old.

I can say for one that BF3 runs terrible at times (20 FPS barely) but it might be because I'm running a dual core i5 661.
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a b ) Power supply
October 6, 2012 12:16:31 AM

Well PSU's generally degrade over time, so I wouldn't be surprised if your PSU wouldn't be able to pull 570w anymore :lol: 

I'm not too sure how you would have to do to calculate how much your PSU has degraded however, I'm still sure it could still pump out power close to its rated wattage.

Just to be on the safe side, I would most likely replace that PSU. It's of nice quality, however, I just don't feel comfortable using a 450w PSU for such beefy GPU's. You could always use your VX450 for a different rig in the future :) 
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a b ) Power supply
October 6, 2012 12:17:58 AM

yonyz said:
How do I know I am not limited by the PSU? It's very efficient (some review mentioned it pulls 570W according to some lab's test) but also very old.

I can say for one that BF3 runs terrible at times (20 FPS barely) but it might be because I'm running a dual core i5 661.


What resolution are you playing at? You may need to crank back the settings a little bit if you're playing on 1080P :) 

Though, I would OC your i5 (if possible) to see if you can get more performance. If your FPS goes up after you've OC'd, then you know for certain that it's holding you back.
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October 6, 2012 12:39:55 AM

I'm playing at 1680x1050.
Can I OC the CPU with the stock cooler? It's 55C when Idle.
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Best solution

a b ) Power supply
October 6, 2012 12:41:42 AM

OOOH NOOO!!! If you're idling at that temperature, there is NO WAY I would recommend an OC. I would HIGHLY recommend getting an aftermarket cooler such as the Hyper 212+.

I'm starting to sense your problems aren't with your rig being outdated, but rather because your CPU is throttling when it gets any intensive load.
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October 6, 2012 12:47:21 AM

ZET KOULING IZ EXPENSIVE!!1
Can we settle for something less awesome than the 212?
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a b ) Power supply
October 6, 2012 12:48:27 AM

I'm not sure where you live, but the 212 is only around $20 at the moment. That's not too expensive by my standards :( 

The Hyper TX3 would be Optino #2.
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October 6, 2012 12:52:46 AM

It's 44 USD in Israel. :D 
And the TX3 isn't sold here, so I'll just buy the 212 Evo.
The i5 2500K I'll order won't come with a heatsink anyway...


EDIT:

Quoting someone from GameSpot forums:
"I have an i5-661 and I was getting 40fps. I overclocked it with afterburner from 3.3ghz to 4.16 ghz and now I get 65-70fps on ultra consistently"

I might keep my prehistoric CPU after all :D  Dual core is still fine by games these days,minus some CPU-loving games such as BF3.

Do you think it'd be hard to overclock the 661 to 4.16 or above?

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a b ) Power supply
October 6, 2012 1:00:07 AM

Oh goodness that is quite pricey :( 

Though, yes, that's still a very nice option :)  you can't go wrong for how much you pay!
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October 13, 2012 1:46:04 PM

A lil' update, I bought and installed a Mugen 3 by Scythe and got me a new Thermaltake TR2 800W PSU.

The idle temps of the CPU went down to 25-28, and everything works much better now (new PSU installed as well), so I'm postponing the computer upgrade, as in I sold the 6950 I had and am back to the GTX 260 for the time being.
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October 23, 2012 4:38:54 AM

Best answer selected by yonyz.
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