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simple question about Powersupply / Video Card

post #1 of 13
Thread Starter 
can a insufficient power supply limit the performance of a Video Card?

im under the impression that an insufficient power supply when trying to run a high powered video card wouldn't even let the system boot

or

will the system still boot and only give poor video card performance in games when the video card pulls more juice??
post #2 of 13
Quote:
Originally Posted by jcrew3002 View Post
can a insufficient power supply limit the performance of a Video Card?

im under the impression that an insufficient power supply when trying to run a high powered video card wouldn't even let the system boot

or

will the system still boot and only give poor video card performance in games when the video card pulls more juice??
Is this in reference to your sig rig?
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post #3 of 13
An insufficient PSU would limit the video card, typically if it is borderline you can boot as it uses less power than under load. When you start stressing the card it will not be able to sufficiently power the card under full load so it will limit the performance or even shut down the system (or blow up the PSU )

If your referring to your sig rig then you should be pretty a ok, a CM 500 watt PSU will be more than enough
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post #4 of 13
Thread Starter 
I now have a GTX460 I'm wondering I I should go maybe 600W
post #5 of 13
Quote:
Originally Posted by appleg33k85 View Post
An insufficient PSU would limit the video card, typically if it is borderline you can boot as it uses less power than under load. When you start stressing the card it will not be able to sufficiently power the card under full load so it will limit the performance or even shut down the system (or blow up the PSU )

If your referring to your sig rig then you should be pretty a ok, a CM 500 watt PSU will be more than enough
This.

Even if it's the eXtreme Power Plus. The GTX 260 isn't as power-hungry as some people might think.
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post #6 of 13
Quote:
Originally Posted by jcrew3002 View Post
I now have a GTX460 I'm wondering I I should go maybe 600W
No, it's fine too.

What performance issues are you having?
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It's a computer!
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Hard DriveHard DriveHard DriveOptical Drive
250 GB Samsung 840 EVO (C:\) 250 GB Samsung 840 EVO (D:\) 150 GB WD VelociRaptor Samsung SH-S243N 24x DVD Burner 
Optical DriveCoolingOSMonitor
Samsung SH-S203N 20X DVD Burner Thermaltake Frio Win 7 Home Premium x64 SP1 Retail AOC G2460PG (24" 1920 x 1080 144Hz G-SYNC) 
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Filco Majestouch 104-key Cherry MX Blues w/NKRO Corsair HX650 (Bronze, ordered on 12-12-2009) CM 690 Intellimouse Optical (1.1A) 1000Hz polling rate 
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post #7 of 13
As far as PSU goes.... it basically either works, doesn't work, or blows up.
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post #8 of 13
In general, either you have enough power, and everything works perfect, or you don't, in which case you'll be plagued by things like freezing, crashes, and flat-out shutdowns (that's the most classic symptom) when you put the system under a load.

You won't just suddenly get much lower FPS because of a lack of juice from your PSU. That's just not one of the symptoms of this particular issue.
    
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post #9 of 13
As far as blowing up goes.... I mean that literally, as well. Not a metaphor.

I had some cheapo 500w power supply that came with the case of my last desktop. I upgraded from an 8600gt to a 9800gtx+. The card came with World at War, and I loaded the game up immediately. Five minutes into playing, I heard a loud BANG! By bang... it sounded like someone fired a .357 in my bedroom. After that, the entire computer shut down. I figured it was the PSU, and took it down to the local shop and bought a new one. We took the 500w PSU apart, and the inside looked like it was filled with cocaine.

Moral of the story is, never gimp yourself on your PSU. It's the single most important piece of equipment in your computer.
Edited by Droogie - 11/4/10 at 5:32pm
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post #10 of 13
Quote:
Originally Posted by Droogie View Post
I have some cheapo 500w power supply that came with the case of my last desktop. I upgraded from an 8600gt to a 9800gtx+. The card came with World at War, and I loaded the game up immediately. Five minutes into playing, I heard a loud BANG! By bang... it sounded like someone fired a .357 in my bedroom. After that, the entire computer shut down. I figured it was the PSU, and took it down to the local shop and bought a new one. We took the 500w PSU apart, and the inside looked like it was filled with cocaine.
cool story bro. and I don't mean that with the usual meme-sarcasm.
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