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What kind of PSU do I need for this rig?

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September 28, 2009 12:07:12 PM

I'm thinking on buy a new PC and this is what I have my mind set to.

Asus-P7P55D Motherboard
Intel Core-i5-750
Saphire HD4890 1GB DDR5
Kingston-PC10600-4Gb-DDR3-Dual-2x2Gb

What kind of PSU do you guys think I'll need? And more importantly, what brand do you think it's best? I've had 2 PSU die on me on my previous PC.


Thanks in advanced.

More about : kind psu rig

a b B Homebuilt system
September 28, 2009 2:08:05 PM

A 500W power supply. Antec, Thermaltake, cooler master, OCZ, all of this are very good brands. And finally, is better if you buy the PSU with PFC active.
Related resources
September 28, 2009 2:58:20 PM

500w PSU would put you down to very few watts for future upgrades, not to mention be pushed probably higher than it's efficiency %. Also you don't want to push your PSU to anything over it's efficiency %. So I would recommend a 650w-750w~ PSU for your setup if you want it to be safe/last you a WHILE (even for your next setup).

People often underestimate the need for a good quality power supply with ample wattage room. For example my setup is running under around 350w with full load, my PSU is 400w... I can expect it to last me... 6 months before it dies, however I will probably replace it very soon (next month maybe)....
September 28, 2009 3:28:08 PM

2 HDDs, 1 DVD-RW and not much else. I don't use any of those LEDs and stuff for the case although I might use some fans.

Thanks for the link, gonna try it out.
a b B Homebuilt system
September 28, 2009 3:57:36 PM

Ok, with the configuration that you said, the site has given me 303W. So, i think that the 500W PSU is more that enough, or for a future update, buy some 650W PSU.

And the PSU that you have, i think that isn't too good...

Good luck...
a c 122 B Homebuilt system
September 28, 2009 5:07:10 PM

If you know you will not CrossFire, a Corsair 550VX will work very nicely. If you are considering running two video cards, I'd get a Corsair 750TX - plenty of power and it has the necessary cables to power the video card.

My second choice would be Antecs in the same power class.
a b B Homebuilt system
September 28, 2009 5:14:23 PM

get a googilian watt psu or what jsc said
a b B Homebuilt system
September 28, 2009 7:14:58 PM

I would say a solid 500-600W PSU would be good. I am talking about a newer model that has a good amp rating on the 12v rails. 30A+ or so. That should do you well. If you plan on a 2nd card maybe a 750w. I have a PC Power and Cooling 750w and I like it alot. I can throw a 2nd card in there if I want an and have 60A on a single rail.

Just remember there are 500W PSU's and there are 500W PSU's.. The power supply you listed above, what are the specs on it?
September 28, 2009 7:37:41 PM

Here are the specs:

+3,3V: 35A
+5V: 40A
+12V1: 17A
+12V2: 19A

Not good? :S

Keep in mind I don't plan on upgrading this for a long time on any parts and i'm looking to spend the least money as possible.
a b B Homebuilt system
September 28, 2009 8:10:02 PM

corsair 550 watt
+3.3V@30A
,+5V@20A,
+12V@41A,
+5VSB@3A
a b B Homebuilt system
September 28, 2009 11:12:12 PM

Metalmurphy said:
Here are the specs:

+3,3V: 35A
+5V: 40A
+12V1: 17A
+12V2: 19A

Not good? :S

Keep in mind I don't plan on upgrading this for a long time on any parts and i'm looking to spend the least money as possible.



It's not great. But if you don't intend to OC, it would be fine.
!