Computer Build

[j17sparky]

You sure that 400 will be enough power? if so then please could someone tell me how i calculate the power needed

Although power requirements for top end gfx cards is on the up, everything else is going down. Persoanlly id go for a 500/600 giving me room to get a decent gfx card in the future. But if hes never going to want a top end one then 400 should be fine.

[t_h]

You sure that 400 will be enough power? if so then please could someone tell me how i calculate the power needed

Just through past experience really. I run a Q6600 and an 8800GT on a 380w PSU (with 2GB RAM, 1 optical drive and 2 hard drives) so a good quality 400w PSU will be fine. I've even overclocked this in the past and run it at full tilt for months on end so I know it's stable.

Those calculators are alright, but try a few and get an average. I tend to go to the manufacturers site and see what wattage they give for each component and then do some sums and factor in a bit of breathing space.

[SwanseaCity]

would i be able to calculate the power unit i need by the power required for each component?

[synaesthesia]

You can, but it's pointless. You need to allow for overheads and expansion. They're not that much more expensive. Look for at least 500w of a decent brand. More often than not, a decent brand is more important than wattage. 400w is more than enough for your particular system there but please leave room for expansion.

[SwanseaCity]

what are some of the best brands for power units?

[t_h]

I've used Antec and Tagan in the past, both have been fine. Only PSUs to give me problems are the billy no-names. Stick to the branded PSUs and you'll not go far wrong.

[SwanseaCity]

ok, found an antec of 500w:

BP500 BASIQ 500 WATT CONTINOUS POWER UK - 0761345-06501-6

Anyone had any experience with this one?