Originally Posted by Primus
A GTS 250 requires at least a 24A on the 12V.
I never go by what the manufacturer recommends. The truth is that nVidia and ATI don't want a ton of customers yelling and moaning that their computers aren't working right with their cards. Therefore they are a little gracious with their numbers as they don't know which exact components you are running. As enthusiasts we should take the numbers with a grain of salt. The most important number you can take from nVidia or ATI is the TDP of a video card. You can calculate a fairly accurate number for reference instead of taking a general number from nVidia or ATI. Here's a rundown of the OP's rig:
AMD Athlon II X2 (65W)
GTS 250 (150W)
320GB 7200RPM Hard Drive (7W)
Optical Drive (18W)
All fans are different and I don't know exactly what he's running but on average most 120mm fans draw 3W or more. We're talking about, at full load, ~240W required from the 12V rail. It's no wonder why you're running into problems trying to run this system on a power supply that only provides you with 192W on the 12V rail! A 1 year warranty isn't going to protect your other components. As I said before....
Originally Posted by C.Jackson
Whether it's the problem or not I'd definately be replacing that thing ASAP before it dies and takes something with it.
Like I mentioned in my previous post, the other power supply does provide more power where you need it. 19A on the 12V rail, ~228W, if you trust the sticker. It might work better but it's still underpowering your computer with an sub-par quality power supply.Edited by C.Jackson - 1/17/11 at 7:19am