250W PSU and an HD 6670 GPU?

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SPOOK0999

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Apr 10, 2012
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Hello!

As the name of the thread says, I am wanting to run a HD 6670 on my computer which has a 250W PSU.

I have used wattage calculators and have come up with anywhere from negative to positive results from them.

But here are the specs of the computer:
AMD Phenom II x4 960t
8gb of DDR3 ram (2 sticks of 4gbs)
The computer has one combo CD drive
2 fans
And the hard drive is a 1TB SATA

So what is your opinions? Will my system be able to handle the 6670? Or do I absolutely have to upgrade my PSU?
I want to avoid having to upgrade it if I can.

Thanks so much!
-Joshua

 
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ricardois

ricardois

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Dec 21, 2011
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no, a 250W PSU isn't enough for ANY gaming video card minimum recommended in most video cards is 400W under that you will certainly run into problem, if not in a short time period in some moths you will run into problem...

i recommend you this PSU goo price/quality:
http://www.newegg.com/Product/Product.aspx?Item=N82E16817139026

you will certainly toast your video card running at 250W or it will be running at very unstable voltages what will cause bad performance and in some time it will also probably die.
 
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k1114

k1114

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May 2, 2010
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You're on the limit of your psu without any card, so you really can't have any card with your cpu and a 250w psu. You never want to go more than ~75% of the psu or else burn it out quickly. Think of it as if you had to run almost as fast as you can for a couple of hours or how ever long you play games. I would suggest you get the cx430 like ricardois suggested or else go higher to reuse it for a new computer.
x4 960t=95w
6670=66w
hdd=~10w
cd=~30w
other components=~50w
=~250w
Of course this is simplified without confusing you with actual psu power/amp limits on 12v, 3.3v, 5v rails and such.
 
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SPOOK0999

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Apr 10, 2012
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This is the calculator Im using.
http://www.msi.com/service/power-supply-calculator/

And it tells me with all of the components that at absolute maximum they will all use, including the graphics card, 231W.

Now another question I have is, is 250W actually the max output? Cause I read somewhere the maximum of a 250W is a little over 300w. Is this true?
 
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welshmousepk

welshmousepk

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only very good quality PSUs can output higher than rated spec.

a low 250w PSU is almost certainly advertising its peak output, not sustained.

really, the other guys are right. you've asked the question, and ignoring the answer would just be stupidity. you simply cannot run that system of such a weak PSU.
 
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ricardois

ricardois

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go with the corsair better price performance, you need ACTIVE PFC psus, those that don't have the voltage switch 110-220, they are automatic, they are much more safe, and handle much better attenuations on your eletric wiring.
 
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ferny111

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Apr 13, 2011
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Yeah...try and at least get something like 400 + and stay away from cooler master; only a few of their higher end PSUs are any good. Personally I have an antec PSU, but Corsair is a really good brand, they cut no corners.
 
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SPOOK0999

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Apr 10, 2012
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I went with the Cooler Master. I can't afford anything else at this point. Im not looking for a perfect gaming system. Just one that will run the 6670. Im fine with the cooler master. Especially considering all of the good reviews on many websites.
 
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k1114

k1114

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May 2, 2010
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Which is about what I gave you and explained how it is unsafe.
 
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XXXX18

XXXX18

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Jan 24, 2012
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I am wanting to buy the HD 6670 in my Inspiron 580s with a 250w PSU. Specs:
i3 530 running at stock clocks 2.93 GHz
1 WD Caviar Blue 320GB
1 Lite-On DVD-RW, DVD-ROM Combo Drive
2 Cooling fans
Intel H57 Motherboard
Windows 7 Ultimate 32-bit
4GB 1333 MHz RAM (2 sticks)
PSU Specs:
Dell Bestec 250w PSU
100-120V-6A 200-240V-3A 50/60Hz
+12V-17A
+5V-18A
+3.3V-11A
+5 and +3.3V-120w Max
Total Power Output-250w
A guy who bought the card from Amazon said he could run it in his machine with no problem. Can I too run the HD 6670 or the GT 430 ? I personally prefer Nvidia.
 
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ferny111

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You could probably run it for sure...but for stability issues, you may have a problem. Personally, I only have never used a 250w PSU on any build, but I would just be concerned about the actual power draw versus rated. If your PSU only gives out, say, 200w (that's with an 80% efficiency rating which it most likely does not come with) and your build needs 210w to run with the card, well, your computer will have random crashes and/or shutdowns. Just my two bits
 
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