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Will i need a new PSU for a GPU upgrade?

Last response: in Components
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March 29, 2012 2:17:05 AM

Had this cheapo power supply for 6 years now and its actually been great running with a 7600gt, But now im looking to upgrade and am unsure if this will be powerful enough to support a 9600gt, 8800/9800gtx or any other recommended gpu's that are cheap used.

Power supply specs 500w max
+3.3v 22a
+5v 36a
+12v 18a
5+3.3 230watt
5+12+3.3 422watt

System
ASUS M4A87TD/USB3
Phenom x4 960T unlocked to x6 1605T
8gb 1600mhz ram

Have a kil-a-wat hooked to computer, pulling ~140w normal usage, 210w under gaming. Any advice is appreciated, thanks in advance.

More about : psu gpu upgrade

a b ) Power supply
March 29, 2012 2:22:25 AM

what is the graphic card you want to use
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a b ) Power supply
March 29, 2012 2:47:41 AM

It will power a 8000/9000 series just fine. You could even go to an AMD 5000 series on 500W too. I think most 6000 series AMDs require 450W, but they aren't going to be cheap yet.
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a c 243 ) Power supply
March 29, 2012 4:53:03 AM

theeassassin said:
Had this cheapo power supply for 6 years now and its actually been great running with a 7600gt, But now im looking to upgrade and am unsure if this will be powerful enough to support a 9600gt, 8800/9800gtx or any other recommended gpu's that are cheap used.

Power supply specs 500w max
+3.3v 22a
+5v 36a
+12v 18a
5+3.3 230watt
5+12+3.3 422watt

System
ASUS M4A87TD/USB3
Phenom x4 960T unlocked to x6 1605T
8gb 1600mhz ram

Have a kil-a-wat hooked to computer, pulling ~140w normal usage, 210w under gaming. Any advice is appreciated, thanks in advance.


Those are the specs of an outdated psu design.
Watts aren't the most important aspect of a psu, 12v amps are, and with only a single 12v rail @ 18a that's roughly the equivalent of a modern 300 watt psu.
It might run a 9600 GT ( does it even have a 6 pin pcie power connector ? ) though at 6 years old I doubt it would do it for very long.
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March 29, 2012 5:07:44 AM

Power supplies degrade over time and out put less power, as old as it is I wouldn't trust it to power much. Like delluser1 pointed out, the 12v rail is very important, it's what power the majority of a modern computer. Most new power supplies have 2 or more 12V rails, and even a 350W unit will have 25a or more between the 2.

You can definitely get a better GPU than you have now, just not anything power hungry that would require a good 400W+ modern PSU.
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a b ) Power supply
March 29, 2012 6:24:30 AM

I have an EVGA 9800GT 512MB HDMI version that came out of my computer a couple upgrades ago. It lists the requirements 350W with 18A on the +12V. I tried looking up my HIS 5770s, but they just give a wattage requirement. Grrr...
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March 29, 2012 7:41:32 AM

delluser1 said:
Those are the specs of an outdated psu design.
Watts aren't the most important aspect of a psu, 12v amps are, and with only a single 12v rail @ 18a that's roughly the equivalent of a modern 300 watt psu.
It might run a 9600 GT ( does it even have a 6 pin pcie power connector ? ) though at 6 years old I doubt it would do it for very long.

Thanks for all the replies, No it does not have a 6 pin pcie connector. Would an adapter from molex work?
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March 29, 2012 9:17:37 AM

Thinking about going with a 9800gt, what you guys think?
http://www.newegg.com/Product/Product.aspx?Item=14-133-...
It recommends 400W with 12v-26a rating, one reviewer said that he is running it on a 12v-18a like mine but with only a 430w, he claims to have done a lot of research and that this is best card w/o psu upgrade. No 6 pin connector.

Dont know if it makes much of a difference but my PSU is actually just over 4yr old, checked order history, my bad
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March 29, 2012 11:20:25 AM

theeassassin said:
Thinking about going with a 9800gt, what you guys think?
http://www.newegg.com/Product/Product.aspx?Item=14-133-...
It recommends 400W with 12v-26a rating, one reviewer said that he is running it on a 12v-18a like mine but with only a 430w, he claims to have done a lot of research and that this is best card w/o psu upgrade. No 6 pin connector.

Dont know if it makes much of a difference but my PSU is actually just over 4yr old, checked order history, my bad


I have i5-2500 + ATI 5850 and the biggest draw I saw (together with my UPS~7W) was 280W in Skyrim. I don't know the Phenom's draw under load, but the 9800 I'm sure draws less than 5850. Of course I have 1 SSD instead of any HDD.
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a b ) Power supply
March 29, 2012 11:53:51 AM

The odds of your power supply blowing up and taking the motherboard,video card ,hard drive ,and everything else with it is too high.
It might work for a while, or it could blow the first time you power up.
That is why we suggest NOT using it.
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a b ) Power supply
March 29, 2012 5:27:59 PM

you might as well replace the PSU with a good one... If you don't you will regret it later.
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!