Question about ps and overclocking

[dino26]

Well i consider myself pretty knowledgable about most pc harware related things but I would like some second opinions.
I thought my system was perfectly stable at 3.8ghz (e8400 3.0ghz@3.8ghz)
I ran benchmarks and tests to determine it is stable and everything seemed to pass. I havent had this for too long and i noticed on 3 occasions now that the system ramdomlyu just shut off (all power off instantly) in the middle of a couple games with lots of graphics on screen.
I did not notice this with one video card (hd3870) when i also only had the system at 3.6ghz...when a game crashes and it says the video stopped responding i know it was me overclocking the video cards too muuch..if the it is another crash i think it could be the processor too much oc but wiith all power jsut going off only in the middle of high graphics i am thinking that perhaps i am pushing the ps too much since the more you oc a processor and graphics the more watts it uses. I am using a 620w or 650w cant remember and have all this inside:

(1)e8400@3.8ghz
(2)hd3870 small oc
(2) 74gb raptor 10k rpm
(1) 320gb hdd
(1) 250gb hdd
(4) gb ram
(1) internal burner
(1) external burner
FANS (1)cpu (2) graphics (4) system

 

[DSF]

The exact model of the power supply would be much more helpful than just the wattage rating in answering this kind of question.

Edit: Also, if you're pretty sure that the issue is your power supply (or if you'd like confirmation that it is or isn't) the power supply forum is probably a better place for this post. There are some people who frequent that section of AT that are very knowledgeable, but I don't think all of them read this section.

 

[dino26]

its a silverstone strider st60f (600watts i guess). Its no cheapo 600w psu. It is also on the list of approved crossfire psu's but maybe not so good wi6th all the other stuff i have plugged in too.

yeah sorry i didnt notice there was a psu area and i thought this might also be an overclocking issue so thats why i posted it in the oc area.

 

[docmilo]

I think what he was asking about is the 12V ratings. Antec has a good page on their website for figuring how much of a power supply you need. Antec Power Supply recomendations. Plug you specs into that and see what it says.

When I plug your settings into their calculator it says 481W. Whatever that means. Look up the specs on the psu and see what the 12V rail/s are rated at. Another thing you may want to check in the bios what the voltages are on the 3V, 5V, and 12V are running at. I had a system that had a big enough PSU but the 3V was registering at 3.7 to 4.0Vs. Not good. My Asus board had a program called PCProbe that would give me digital reading on all the voltages real time. Does your mobo come with something like that?