What psu ?

**Cew27** · #1 1st Nov 2007, 10:11

right i need a new psu for my pc im building ... i have about £100 to spend and it its to have plenty of power and be a really good one

i think i asked this a while back but i have been busy revising for exams and couldnt find the previous posts

**Spencer2004** · #2 2nd Nov 2007, 08:48

it entirely depends on your computer, if its an average computer with dual core, couple of hard drives, an optical drive and a low power graphics card any one around 450watts will do you. however if you have something like a quad core with a high end graphics card with some raptors and other fancy stuff you will need a good quality psu of about 650 (or more) watts.

i cant reccomend any good makes but heres some psu units that are good http://search.ebay.co.uk/_ATX-Standa...inZtQQsbrsrtZd

**Thunderer** · #3 4th Nov 2007, 03:30

About the makes for the 650W, you should go for the Enermax Infinity (http://www.scan.co.uk/Products/Produ...oductID=567861) which is 105pounds but the higher you go with wattage the higher the price. DO NOT buy any high wattage PSU for a very low price cos in that way you would be killing your PC

**Cew27** · #4 10th Nov 2007, 03:51

ok ... so after askaing around i have come to the conclusion that i need an 850 watt psu ... i have looked around at some ones that look good but i dont know what all the spec means
im after one that is sli certified or whatever .... able to fit any mobo .... and made by a reputable company ...
thanks

**Mike0001** · #5 10th Nov 2007, 04:14

Hey, cmon, think about the environment buddy! Do you really want a small electric fire burning in your computer?

**alex** · #6 10th Nov 2007, 04:24

Whilst your environment point is well taken Mike (I never leave anything on when it's not in use, no, seriously) You need to be looking at efficiency in psu's in regards to saving the earth and all that, not the wattage.

For instance this an Enermax 500w is around 82% efficient, meaning when running at peak it will need to draw 590w from the mains to output the 500w.

A typical generic psu is around 50% efficient, so a 500w version of one of these will need to draw 1kw (!!) when running at peak.

Plus, due to the materials used they also fail more quickly, so you've all those nice chemical coatings, and metals thrown in the refuse.

**Cew27** · #7 10th Nov 2007, 16:19

soo what psu then lol

**cyberspacegenie** · #8 10th Nov 2007, 16:49

Hi Cew27,

what is it that you want a recommendation on - wattage or brand?

If its wattage then probably best to put the full spec on here then one of the mods will give you a good idea of what you really need in terms of power. When I was looking for a PSU I found that people were telling me conflicting things in terms of power, but I went with the advice I got here and it was good advice.

In terms of brands there are many good ones around. The mods tend to favour Enermax, which get very good reviews, especially the Enermax Infiniti series. I recently bought a Corsair 620HX (620w), which I'm very happy with - stable, quiet, very good reviews, very efficient, and came in a little cheaper than the Enermax Infiniti.

**Cew27** · #9 10th Nov 2007, 18:31

it ... here is what i am hoping to get and what it will run
new amd or intel quad core
up to 4 gig of ddr3 ram
ddr3 mobo
2dvd writers
high end gfx
dual monitors if that makes a difference
some led fans and a cathode .. and i would like it to be futureproof with sli capabilities and to be able to fit all mobo's .... may be a bit much to ask for but i have 150+ TO SPEND

**alex** · #10 10th Nov 2007, 21:33

Going the path of the quad and a dual card setup.

SLI & Xfire and Quad certified