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Thread ID: 121186 2011-10-15 03:48:00 Suspected underrated power supply... can you shed any light? mookster1 (15854) Press F1
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1237664 2011-10-15 03:48:00 Hey all,

A while since I've been on here (by the way kudos to the site designers... this looks great! :thumbs:) but I have an issue. I think that my power supply may be stressing out under load and consequently shutting down during inopportune occasions. It's a 400W SuperPower power supply (not too sure if this is a brand to steer clear of) and when I do any rendering in Blender, it konks out halfway through (the symptoms are exactly the same as pressing and holding the power supply button; kerCHun... as the fans shut down, and the monitor turns off along with the Power light on the front.) I have recently installed a graphics card (works really well... it's a Gigabyte GeForce 8500GT which I got at a garage sale for the princely sum of $65, and it beats integrated graphics hands-down!) but the same issues were occurring beforehand. This only really occurs during times of high load (before I posted this I was about to buzz someone in a little Cessna with my Mustang on Flight Simulator X and the power supply died) and as I say only happened before when I was rendering a fairly complex scene in Blender. The machine has 2GB of DDR2 RAM, a 2.8GHz AMD Athlon 64 X2 processor and a Gigabyte GA-something-a-rather motherboard (I'll have to take the cover off to have a look, I had a bit of paper with it on but I cannot find it.) I don't really want to go out and buy another power supply if I don't have to, hence why I am asking.

Thanks! :)
mookster1 (15854)
1237665 2011-10-15 04:55:00 and the monitor turns off along with the Power light on the front
Is the monitor power cable plugged into the PSU?
jareemon (5207)
1237666 2011-10-15 20:13:00 It would be useful to check your temperatures as well. Here's a good article to read windowssecrets.com

Report back your temps.
linw (53)
1237667 2011-10-15 23:07:00 Yup, will do. BTW the monitor power cable is plugged directly into the power board (i.e. not thru the power supply unit) and as I undusted everything not too long ago dust doesn't seem to be the problem. Thanks for your help, and I'll get back on here when I run the test. mookster1 (15854)
1237668 2011-10-15 23:09:00 Oh yeah, what I meant to say about the monitor turning off is that it goes into standby as if the computer is shut down... sorry about not being too clear about that! As for the Power light on the front of the computer that goes out, so it's definitely shutting down for some reason. mookster1 (15854)
1237669 2011-10-15 23:10:00 Hey all,
400W SuperPower power supply
2GB of DDR2 RAM, a 2.8GHz AMD Athlon 64 X2 processor

Rather underpowered for rendering.

More RAM< More CPU.

As for the PSU, ick, most brand are to be avoided, some good brands are:
Corasir
Enermax
Antec


And dust - did you get it all out of the fins in the CPU heatsink? Did you get it out of the inside of the PSU?

Most people don't even look at those places.
pctek (84)
1237670 2011-10-15 23:19:00 Could be CPU temperature but "SuperPower" doesn't sound like any PSU I've ever heard of that was any good, so it's not a bad choice to point the finger at it. Agent_24 (57)
1237671 2011-10-15 23:25:00 Hello again

Yes I did clean out the fins on the CPU heatsink, and I looked in the power supply (I didn't open it of course) and it didn't appear to have much dust and stuff in it. SuperPower does sound like a fly-by-night, gone-by-morning brand (pcworld certainly haven't touched their stuff AFAIK) so that's the first thing that came to my mind.
mookster1 (15854)
1237672 2011-10-15 23:38:00 Borrow a better one if you can, if that solves your problem, buy something decent, a Corsair if you need something cheap. Agent_24 (57)
1237673 2011-10-16 00:30:00 That's what I was thinking of doing and I have access to a bigger, better 600W power supply, but unfortunately it's not sufficiently new enough to have an ATX12V plug to give 12 volts to the processor, which sucks (it was out of a defunct server that got replaced in 2005). I'll run those temperature checks and see if that tells me anything. mookster1 (15854)
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