Getting a new PSU. Is it compatible with my motherboard?

Head On

Solid State Member
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I'm looking to upgrade my psu to something a little more powerful. My computer randomly shuts down at times and I believe it's because of my crappy 450 Watt PSU that came with the case. Anyways I'm wondering what will be compatible. Here are my specs just in case you need to know:
CPU: Intel Core 2 Duo E6400
Motherboard: P5N-E SLI (click on link for specs)
RAM: Kingston (2x512MB) PC2 4200 DDR2 RAM
Hard Drive: Western Digital 250GB SATA HD
Video Card: Nvidia 7600GT
CD-ROM Drive: Not sure what specific model. I got it off my old computer. It connects into the IDE/PATA drive. Reads DVDs, reads and writes CDs and DVD+Rs

My first concern is about the primary power connector. My motherboard says it uses a 24 pin power connector. But I also plugged in a 4 pin power connector on the motherboard, (close to the cpu). So, in my mind I thought I would need a PSU that could connect to the motherboard with a 24pin and a 4 pin connector. But I've gotten really confused when searching on newegg. I can chose from 20 pin, 24 pin, or 20 +4pin in the power search menu. What the heck? I am really confused about this. I thought I needed a 24 pin and a 4 pin. (And it's not helping that 20+4=24! Does a 24pin equal a 20 +4pin?) Theres no option to search for 24pin +4pin, which is what I think I really need. Could someone clear all this up for me?
My second concern is whether my IDE cd-rom drive can be connected to the psu. I've been searching and none of the psu specs say anything about IDE cables. But I think this won't be a problem because my current psu connects to my cd-rom drive with a similar cable that connects to my SATA hard drive.
:)

Here are some of the PSUs I've been looking. Most of these are 20 +4 pin so I'm not sure they are compatiable. I'm looking to get something around $40-$80 dollars. Decent wattage, SLI support is a plus, definitely Dual 12V Rail. Please take a look.
http://www.newegg.com/Product/Product.asp?Item=N82E16817182044
http://www.newegg.com/Product/Product.asp?Item=N82E16817190011
http://www.newegg.com/Product/Product.asp?Item=N82E16817709004
 
Of the one's you selected, the Rosewill would be the best one to get. I does have a 24 pin main connector. The 20 + 4 means that it has a 24 pin main connector with a detachable 4 pin section so it can be connected to 20 pin motherboards.

It also has a separate 4 pin P4 connector that will plug in near the CPU.

Your CDROM will connect to one of the standard 4 pin molex power connectors from the PSU.
 
okay thanks guys. I'm gonna keep looking to see if there is a better deal and if so I'll post it on here. But for the mean time the rosewill is at the top of my list. :)
 
Head On said:
Here are some of the PSUs I've been looking. Most of these are 20 +4 pin so I'm not sure they are compatiable. I'm looking to get something around $40-$80 dollars. Decent wattage, SLI support is a plus, definitely Dual 12V Rail. Please take a look.
http://www.newegg.com/Product/Product.asp?Item=N82E16817182044
http://www.newegg.com/Product/Product.asp?Item=N82E16817190011
http://www.newegg.com/Product/Product.asp?Item=N82E16817709004

I would go with the rosewill...and ignore my previous post..i forgot that it was a detachable 4pin connector.
 
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