Old PSU for a new PC

[WhitenBat]

Hello! I've decided to build an entry level pc with new/old parts that I have, but I'll need to wait a bit until I get a new PSU. So I was wondering if my really old one can power this PC for a while?
The PSU: http://i.imgur.com/78IBQmt.jpg [1]
The PC that need power:
MOBO (new): MSI H81M-P33
CPU (new): Intel G3258 (Obviously not planning to OC it until I get a new PSU)
GPU: Asus R7 240 2GB DDR3 Low Profile
RAM: 4GB DDR3 and 2GB DDR3
HDD: 1TB 7200RPM
Would that old PSU power this PC for a month? Thanks in advance!

 

[TheBeerAddict]

Yes, 300W PSU seems to be enough (assuming your CPU need 53W and your GPU around 75W).

 

[BSOD BSTD]

my guess is that it will work, but your PC will probably shut down under high load eg. gaming. You can give it a go, but get a new PSU ASAP. Preferably one from this list, tier 3 or above.

http://www.tomshardware.co.uk/forum/id-2547993/psu-tier-list.html

 

[WhitenBat]

Yes, 300W PSU seems to be enough (assuming your CPU need 53W and your GPU around 75W).

Great! But that PSU is like 7 years old and made by a pretty infamous brand. Should I still trust it? Are the amps ok?

 

[WhitenBat]

my guess is that it will work, but your PC will probably shut down under high load eg. gaming. You can give it a go, but get a new PSU ASAP. Preferably one from this list, tier 3 or above.

http://www.tomshardware.co.uk/forum/id-2547993/psu-tier-list.html

Thanks for your reply! What can be the reason of the shutdown? Not enough Watts/amps or just being old in general?

 

[TheBeerAddict]

If i was you as BSOD BSTD said i would buy a new PSU as soon as possible.If you can afford one of the list above you should go for it!

 

[Sapphire Thunder]

It is infamous indeed but it will work until you get the new PSU.

 

[BSOD BSTD]

my guess is that it will work, but your PC will probably shut down under high load eg. gaming. You can give it a go, but get a new PSU ASAP. Preferably one from this list, tier 3 or above.

http://www.tomshardware.co.uk/forum/id-2547993/psu-tier-list.html

Thanks for your reply! What can be the reason of the shutdown? Not enough Watts/amps or just being old in general?

a bit of both actually. You can check the requirements of your build with this tool:

http://outervision.com/power-supply-calculator

add another 50w to be sure.

A major factor is the quality of the PSU itself, as yours is an old budget PSU it might well be throwing out less amps than it should. You will know if theres not enough power, your PC will just turn off INSTANTLY, no crash, BSOD, just off.

 

[fisbuar]

Alternatively, depending on how much you care how your PC looks you could buy a second "cheap" PSU and use the old one to only power your Graphic card for instance, if the power cables are compatible.
I've done this my self, using a 450W to power the motherboard, HDD, CPU, and DVD, but using my 350W spare, to power the GPU alone.

 

[WhitenBat]

Thanks to everyone for fast replies! I decided not to risk it and ordered a brand new PSU. Cheers!

 

[CraneBig_DyeLight]

iMaster pro sli 600watts still survived for me. 6 pin not yet installed.