PSU Maintain Volts

[DCB_AU]

Prescott Celeron 2.4 OC to 3019MHZ. All running OK, but I would like Vcore to maintain voltage. At Idle 1.348V which is excelent.(only requires 1.3V, allowable up to 1.4V)
But when OC drops to 1.278V which is still OK- but.

I have a generic 400W PSU wich obviously is not one of the best or probably not average quality.

So qestion is- would a good quality 400W PSU maintain the Vcore volts when OC, or probably still drop maybe not as far but near the default volts of 1.3V.

Thanks,

<font color=red>DCB</font color=red><font color=white>_</font color=white><font color=blue>AU</font color=blue>

 

[fishmahn]

<A HREF="http://www.jscustompcs.com/power_supply/" target="_new">http://www.jscustompcs.com/power_supply/</A>

Use this to estimate your system's power requirements. That will give you the load you can expect to constantly be on your PSU. Remember since you're o/c'ing to spec your CPU as a higher wattage one because the faster clock is going to suck more power.

Knowing that most all PSUs are rated at peak load, not constant load, and constant load usually should be no more than 70% of peak, you can figure out what wattage peak you need. So, if it says you need 275watts, multiply that by 1.5 (that sets you up at 66% of peak) and you need 412.5w, so a 430w+ PSU is the minimum you should get.

Then get a good quality PSU - Antec's "True" series, Fortron Source (other brands that have "FSP" in the part # are relabeled Fortron PSUs, so those are good too), OCZ, Enermax, as well as others - I know I haven't covered all the good names... I'd get one with a few more watts than you need if you aren't going to be upgrading (as above - just over your requirements), and a lot more watts (say, a 500+) than you need if you are going to upgrade regularly without getting a new PSU.

Mike.