Q: AMD Athlon 64 3500 977 503 GIGABYTE GA-K8NSNXP-939 “nForce3 Ultra chipset motherboard for AMD Socket 939
Optorite DVD RW
Liteon DVD/CD-RW
WD 36.7 10k Raptor
Maxtor 60GB
Maxtor 40GB
ATI Kingston Hyper X Radeon 9600XT
1GB (2 sticks)
I an Antec 380W PSU now, but idk if its gonna be enough .
was think about this: Vantec PSU (http://www.newegg.com/app/ViewProductDesc.asp?description=17-103-473u0026amp; DEPA = 0)
Best Answer: 550W should be plenty for your system, but I think you're on the right track with it being unstable. As they say, it's not the size of the wave, it's the motion of the ocean.
As far as the PSU you are looking at, it's hard to tell without seeing all the specs. The site doesn't seem to tell you what the current is on each rail. For your system I think you want something with around 18A-20A (or higher) on the 12v rail. Here's a link to a low cost & popular PSU here in the States. I'm not sure if it's available in the UK, but it should give you an idea of what to look for. http://www.newegg.com/Product/Product.as…
Before you buy something, see if you can adjust voltages in your BIOS. Try increasing your AGP voltage from 1.5v to 1.6v. Try the same thing on your memory, 2.5v to 2.6. Sometimes a little extra voltage is enough to compensate for some minor instability. On second though, £20 seems awful cheap for a PSU (around $10 US). If the CPU is the brain of your system, then the power supply is the heart.
CPU temp seems a little high, but I'm more experienced with AMD processors, so I'm not sure what is typical for a P4. Keep in mind that the readings through the BIOS and sensor chip can be quite erroneous. For example, my system shows 24 deg C at idle with the fans turned down in a 20 deg C room. I doubt my air cooling is that efficient. If I update the BIOS to the next version up, the same temp jumps by 12 deg C which is probably more accurate.
Re:Check it has a good 12v power rail, lots of amps (20A if you can).
Watts mean nothing, especially ona generic PSU.
Amps is where it's at.
The Vantec has 28A on the 12v rail, it will be plenty.
(<- has no spare amps on the 12v rail, 12v rail has voltage drop because of it 
)
Re:Originally posted by: guy
http://www.jscustompcs.com/power_supply/
You should be fine with either
The thing with that is it doesn't take AMPS into account. Watts are like the Mhz of CPU's.
Re:http://www.jscustompcs.com/power_supply/
You should be fine with either
Re:You will be fine with the 380 or the 470.
Tom
Re:I would think the Antec is probably fine. I would try it out and if it ends up not being enough give something else a try.
Re:whoops, using a radeon 9600XT and 2 sticks of ram (2x 512MB Kingston Hyper X)
Re:I could sell you the 470watt version of that Vantec for 50 bucks. Its used but still has atleat a year of warrenty left on it.
The PSU you have right now is probably fine but budmantom is right what GPU are you going to have?
Re:I'm not sure what gpu you will be using.
I'm using a 250w unit to power my p4 3.4ghz, 9800pro, 2 sticks of ram, 2 hd's, dvd burner and a few usb devices, so I think you should be fine.
Tom
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