Power Supply

Can anyone tell me if this is any good
ATX 12V
Ac Input : 115V 10A
230V 5 A

Frequency 50-60Hz
Max Load 420W


DC Output
5V | 3.3V | +12 | -5V | -12V | +5VSB
40A | 30A | 18A | 0.3A | 0.8A | 2A
220W | 216W | 1.5W |9.6W |10W

Thermaltake Purepower

 

They are a very good brand and the PurePower range has some good features like temperature controlled dual ball bearing fans, built-in Over Voltage Protection and plenty of connectors.

A pretty good choice.

 

yea but i have had this a few weeks and my computer is always just instantly restarting on me...

AMD 64 3000 939
1024MB Kingston Pc3200
9800PRO 128MB
Maxtor 40GB Harddrive
1 CD Drive 1 Floppy
No Case Fans

 

As far as the general overall brand and quality, they are very good but like everything else they could be faulty, but your original post made no mention of that, it just asked if it was good, which it is.

Did this "problem" happen at the same time you replaced the power supply?

Did you change anything else at the time this started?

 

It only has 18 amps on the 12v rail the most Important number that isnt good at all,especially for a quality company but I wouldnt say thats the problem,if you give more detail about the restarts we might think of something they have in common.

 

Just going by the amperage is absolutely no indication.

It has to be checked under load to give an accurate result.

Which is why a lot of cheaper power supplies have a high amperage rating, but are useless in real use.

 

Most of the cheap power supplies I have seen have a high wattage and low amperage because most people see 500w and think its good,only people who know what they are looking for look at amperage.The max current a power supply can give is directly related to the thickness of the wire,quality of capacitors and cooling efficiency.Thers no way of cheaply using thicker wire heavier aluminium heatsinks,thats why cheap psu's are cheap.This is also related to the stability of the psu,the closer a psu gets towards its theoretical maximum the more unstable it becomes,as it heats up and resistance of the wire increases.