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Building a new comp. How many watts will my PSU need?

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February 9, 2009 6:00:35 PM

My components, So far:

CPU:

Intel Core 2 Duo E8400 3GHZ

Video Card:

Gigabyte: ATI Radeon HD4670 512mb DDR3

Sound Card:

Creative X-Fi Xtreme Audio

Motherboard:

Gigabyte GA-P35-DS3L

Memory:

DDR2 4GB 800MHZ

Hard Drive:

Western Digital 1TB WD10EADS


a c 248 ) Power supply
February 9, 2009 7:08:28 PM

Are you a hardcore gamer into serious overclocking?
February 9, 2009 7:13:36 PM

It depends, how many ram sticks?

It also depends on your case, how many fans it has, lots of other stuff
Related resources
February 9, 2009 7:29:01 PM

I would say 500watt minimum, depending on the amps needed for your video card etc. HD 4670 needs about 20+ amps I would think, so 500-550watt would be good. Corsair, OCZ,PCP&C,Seasonic are good choices.
February 9, 2009 10:56:14 PM

RiotSniperX said:
It depends, how many ram sticks?

It also depends on your case, how many fans it has, lots of other stuff


Two ram sticks.

Case: Antec Nine Hundred, 4 fans?

sprucebr1 said:
I would say 500watt minimum, depending on the amps needed for your video card etc. HD 4670 needs about 20+ amps I would think, so 500-550watt would be good. Corsair, OCZ,PCP&C,Seasonic are good choices.


Thanks, but is there any way to calculate more precisely?

February 9, 2009 11:41:48 PM

http://archive.atomicmpc.com.au/forums.asp?s=2&c=7&t=9354

HD4670 ______________#¦)######}| 10W-70W

on a 12v rail this would amount to ~6amp at most wow ay ;) 

hard drive will be 20-30 at max draw (on spin up)

e8400 as tdp of 65w wow massive :S

The x-fi doesnt even need external power (usually floppy connector) so its all through the mobo slot.

P35 is not to bad on power.

As long as you arent going to go crazy on an overclock or update the GPU in the near future this would be perfect
http://www.newegg.com/Product/Product.aspx?Item=N82E16817703018
February 10, 2009 1:08:21 AM

Read the stickies. They help a lot.

Use the PSU CALCULATOR which is found in the stickies. It will give you a decent idea of how much you need.
a c 243 ) Power supply
February 10, 2009 2:09:22 AM

chookman said:


As long as you arent going to go crazy on an overclock or update the GPU in the near future this would be perfect
http://www.newegg.com/Product/Product.aspx?Item=N82E16817703018


Plenty, but an Antec 380 with a 6 pin pcie connector would give him the option of upgrading to a better video card.
February 10, 2009 4:27:38 AM

Sall good man, i agree with the Antec as well ;) 
February 10, 2009 5:52:41 AM

delluser1 said:
Plenty, but an Antec 380 with a 6 pin pcie connector would give him the option of upgrading to a better video card.


I would like to keep that option.

Does that exclude the 380watt? overclocking is not that important.
a c 243 ) Power supply
February 10, 2009 10:24:07 AM

You would would keep the option with either the PCP&C 370 or the Antec 380, both are based on the same Seasonic platform.
Even if overclocking is not that important you could get away with some.
The machine I put together for my wife has an E4300 oc'ed to 2.4 and an oc'ed 8800 GTS 512 that put a little more than a 60% load on the Antec 380 when stressed with Orthos and Furmark.
February 10, 2009 6:04:40 PM

sprucebr1 said:
I would say 500watt minimum, depending on the amps needed for your video card etc. HD 4670 needs about 20+ amps I would think, so 500-550watt would be good. Corsair, OCZ,PCP&C,Seasonic are good choices.


This one would be nice, not sure if u wana spend this much though. There is cheaper then this that are good but these are very reliable.
http://www.newegg.com/Product/Product.aspx?Item=N82E168...
a c 128 ) Power supply
February 10, 2009 6:35:57 PM

Unless you anticipate a significant upgrade (e.g. to a 4870), the sub-400W PSUs which have been linked by chookman and delluser1 will be sufficient.
February 10, 2009 10:42:23 PM

shata said:
This one would be nice, not sure if u wana spend this much though. There is cheaper then this that are good but these are very reliable.
http://www.newegg.com/Product/Product.aspx?Item=N82E168...


Wow, admittedly its a good PSU but that will clear for Quad overclocked and SLI GTX280s... how can you justify a 750w monster for a machine that will be lucky to use 100w at idle and 200w at load?
!