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Welcome!
This is the official forum page for PSU Calc, a new power supply calculator built by enthusiasts, for enthusiasts. With the most accurate results, easiest to use interface, and built in power supply recommendations, PSU Calc is the best way to find out what power supply is right for...
Thanks mate. :)
I don't think the problem is quite as bad as it's made out to be. Certainly there's some slight cheating going on; using PSUs with shorter cables (to reduce resistance), cherry picking the best out of ten units. That's common, but relatively inconsequential, as most units this...
If you're seeing 550W from the wall with an HX750, you're in the 86-88% efficiency range, so that's maybe 478W from the PSU. Your HDDs won't increase in power consumption since the motor is the main power draw from those and that draw doesn't change (power draw might change with "Green" drives...
Didn't know that unit had +12V sense. Well those units had a HYsomething protections chip with pretty tight OVP. You're definitely not getting up over 13.0V with that trick alone unless the chip's not working.
I assume you're trying to power a device that requires 14VDC?
Just buy a 14V power supply. Or if your load is going to be around 1A or just over and you don't care about ripple you could try finding a 7815 voltage regulator...
I don't want to bad mouth a competitor, but Outervision's app isn't perfect. They have a bad case of what's called "false precision"; that is, it gives you a more precise number than it can honestly back up. They give recommendations down to individual watts and they bump their number up or down...
Aw crap. That's the THIRD time that bug has come up, been fixed, and then shown up again. I think James maybe isn't saving his work or something. :p We'll fix that.
Hi folks, new around here, but I've been helping out the enthusiast community for quite a while as the Power Supply Editor at Overclock.net. ;)
PSU Calc v1.0 goes live tonight at
6:00 PM Eastern Time
There will be a ~30 minute server downtime as we move over the new database...