Originally posted by: JustStarting
Originally posted by: Jeff7181
Corey0808, you don't need a 400 watt power supply... all you need is a quality power supply like the brands JustStarting mentioned. An Antec TruePower 330 would be just fine... if you'll have a high powered video card and multiple hard drives and CD/DVD drives, then you might want to get the TruePower 380.
I use an Antec SL350 in mine, and I have an "XP3200," Audigy 2 ZS, Raptor, WD800JB, FX5900 @ 490/940, 2x512 PC3200, 52XCDRW, 16XDVD-ROM, 6-in-1 media card reader, 4 USB peripherals attatched at all times, and 4 80mm case fans. I also had a WD1600LB in there with no problems to format it before I put it in my other computer to use as a network drive.
Yeah- but are you jackin' 1.9v to the CPU or 3.0v to the memory?? The little extra that a better PSU costs, elimintaes a lot of "potential" problems while OC'ing. This is the OC'ing forum isn't it?? That's what he asking about. Minimum
I'd go with is a 400W- even for mild OC'ing.
See my rigs- you'll get the idea of my equipment. It all depends on you goals.
Allow me to quote Bart Simpson, "don't have a cow, man." You probably shouldn't have your CPU voltage at 1.9v anyway, but that's beside the point. The total wattage of the PSU isn't as important as the quality of it, and how much wattage is available on each voltage rail. VERY VERY VERY few people NEED a 400 watt power supply.
BTW... voltage doesn't effect the wattage as much as you might think. An XP3200 @ stock voltage has a maximum TDP of 76.8 watts. An XP3200 @ 1.9 volts has a maximum TDP of 88.35 watts. Hardly a significant increase in terms of the PSU's capabilities.
Increasing the clock speed by 100 Mhz to 2300 Mhz increases the TDP to about 85.1 watts. A 2.4 Ghz processor on 1.75 volts would have a TDP of about 100 watts. so really, when you're looking at the difference between a stock XP3200 vs. one at 2.4 Ghz on 1.75 volts, you're looking at about a 25 watt increase... MAXIMUM.
So... if your stock XP3200 does perfectly fine on a 330 watt PSU, but you overclock it to 2.4 Ghz on 1.75 volts, you MAY need a 350 watt PSU since we're only talking 20-30 watts difference. And the RAM is an even more insignificant difference since it only uses a small fraction of the power that a CPU uses.
If you look at the typical specs of a hard drive, under normal operation they use about 10 watts for a 7200 RPM drive. My Raptor uses only about 12 I believe.
IIRC, an nForce2 motherboard uses about 60 watts at most. I'm really not sure about a video card... but I would assume it's not more than a CPU... so... lets say we got 90 watts for the CPU, 90 for the video card, 60 for the motherboard... and lets be generous and say 15 per hard drive and lets say ya have two of them, and lets say another 20 watts for a killer soundcard like an Audigy 2, and lets say you have a few USB peripherals that aren't self powered, so you got about 5 watts per device, and lets be generous and say you have 4 and of course you have fans... and IIRC a typical 80mm case fan uses 2 watts, and lets say you have 4 of them. Then lets say you have two CD/DVD drives at 10 watts a piece. And you have 2 sticks of PC3200 RAM at about 10 watts each. That's 350 watts, and remember, I estimated on the high side of a few things, and these are all maximums, even while you're playing a game your CPU and video card won't be using the MAXIMUM wattage they're designed for.
Only thing I haven't taken into consideration is what voltage rails these things get their power from. I really don't feel like dividing everything up to what voltage rails they're on, so... yeah... I'm done rambling =)
*EDIT* BTW... I do overclock... I put XP3200 in quotes because it's an XP2500 running at 2.2 Ghz on a 400 Mhz FSB on 1.675 volts. And if you read my post, you'd see my FX5900 is overclocked quite a bit... more than the average FX5900. My SL350 is chuggin along just fine.
You said the minimum you'd choose for mild overclocking is 400 watts. I can go buy a 400 watt generic PSU for $20 that will fold like a cheap hooker who got punched in the stomach if I stick it in my computer.
Unless you've got a dual CPU system or have a HUGE RAID setup, you're better off looking for quality over quantity.