Psu

TerrorFirmer

My Q-tec case says, in big writing on the psu, Output - 350W Max.

However, on the bottom, in smaller writing, it also says +5v & +3.3V total output 180w

What output is it?

I'm looking to run a 2800+, 256ram, 40hd and a 32 (Rage Fury Pro) or 64mb (radeon 7000) card off it, so don't want anything to go wrong....

Should I be using the Rage Fury Pro over the Radeon 7000 using this setup? Or will it still run correctly if I decide to use the radeon?

Thanks for any replies

zuma

That PSu will run those fine.

Im not big into PSU's but find all the V's and associated I's....muliply each for watts along each voltage line and then add them all.....positive and negative polarities!!!

Sgtshaft

350w is your PSU's peak output rating, so it can't actually handle having all of its power rails loaded to their full capacity all the time so thats why your PSU's rating is at 180w

zuma

Sgtshaft wrote:

350w is your PSU's peak output rating, so it can't actually handle having all of its power rails loaded to their full capacity all the time so thats why your PSU's rating is at 180w

I doubt thats true.

PSU's can handle their rated power output easily enough depending on the quality of course.
If you read it again his comment was only on the 5V and 3.3V total power output....where has the 12V gone???
Do the math and you should get a figure of around 340-360 W.

Tony H

If the psu is a q-tec the best place for it is the rubbish bin , in the long run you would be better off buying a quality psu like a bequiet or a fortron
have a look in the modding section and ask the mods opinion and they will point you in the right direction

Webmonkey

It will probbaly run fine but Q-Tech PSU's are known to pack in easily, keep a bit of money under your pillow for a new PSU in the future

mp3guy

Do Not Buy Q-tec!

Sgtshaft

zuma wrote:

I doubt thats true.

Power supplies can be rated with two wattage numbers; peak and continuous power. The peak power rating is usually in parenthesis right behind the continuous power rating number. During normal operation the power supply has been rated to be able to deliver a specific wattage all the time. This is the continuous power rating but the PC can be a power pig during startup. Components, such as hard drives, can chew up a lot of power when coming up to speed. Have you ever tried to push a car? It takes a lot of effort to start it rolling but it gets easier afterwards. Power supplies can have a "peak" power rating to accommodate for this spike. The power supply can sustain a higher wattage for a short period of time. This short period of time may be less than a minute but it is enough to "get the car rolling."

Webmonkey

Thats true, Force = Mass by Accelleration, Getting the car rolling is the highest accelleration part. It will move constant velocity afterwards not requiring as much force, ie not requiring as much work/power done