PSU: Known brand Refurb or Cheap brand but seemingly over-specced?

ChipDeath

Splendid
May 16, 2002
4,307
0
22,790
The short story:
I have a very low load PC (probably 300W max at a guess) for which I need a new PSU. I can either:
* buy a well known high quality brand that meets the needs - 350W or so like this 350W corsair?
* buy a refurb one? like this 450W corsair?
* buy a cheap crappy one but with a massively higher rating than I need, and hope that it doesn't explode after a few weeks/months something like this 750W 'Evo Labs' one

What's best in people's opinions? The new 350W is the most expensive, then the refurb 450W, then the el cheapo is the cheapest (by a fair margin) I know the cheap ones get a bad rap, but I'm not going to be stressing it much :)

The Long Story:

I have a PC that sits in a cupboard and is used as a media server and for backup. It has a core 2 Quad, an Asus Workstation-style motherboard (can't remember the model), and 4GB RAM (4x1GB sticks I believe). Its gfx card is something like a Geforce4 MX or something absurdly low-end (cost maybe £20 several years back) which is so under-utilised that I just removed the fan altogether when is started making horrid noises and it's been fine since (several years).

So basically, the load is very low, and I suspect in real terms it won't need more than 300W. Now of course a 300W power supply will actually be 300MW(Marketing Watts) , the precise meaning of which will vary HUGELY by the brand.

It's just started rebooting/turning off before it finishes booting into windows, and I'm pretty certain it's the PSU as it started having power-related problems a few weeks ago - it appears to have just spontaneously rebooted earlier today (I was remoted in and lost connection, then went to see and found it stuck in a reboot loop)

It currently has 3 Hard drives (all 7200RPM 3.5" IDE, a 1TB and 2x 250GB). It used to have a fourth, but I found that having all four plugged (in fact, specifically using the fourth SATA power plug) in meant it would struggle to recognise them all (in BIOS/during boot-up) - so I concluded it was having power supply issues at the time, and now it seems it's gotten worse (not surprising really)

Thanks for reading - realised this was an essay so added 'The Short Story' above :)