Need a new psu, help

[harryprs]

Hello, I'm in need of a new psu due to my current ones fan dying and not supplying enough power to my computer as I'd like.

I'm pretty much hopeless with selecting a psu, but I picked 2 that I think may work but I can't make sense of most of the specs.

My computer specs are:
* AMD Athlon II X4 630 Quad Core Processor AM3 (2.8GHz)
* Microsoft® Windows® 7 Home Premium pre-installed
* Stylish Mini-Tower uATX Chassis with 300W PSU - Piano Black *
ASUS M4A78LT-M LE Mainboard (DDR3), with integrated DVI/VGA Graphics - MATX
* 4GB 1333MHz Dual Channel DDR3 SDRAM - (2x2GB)
* 500GB Serial ATA Hard Drive with 16MB Buffer
* 22x Dual Layer DVD Writer Super Format +R/-R/RW/RAM *
1gb GIGABYTE NVIDIA geforce gt440 DDR3
* 7.1 High Definition onboard sound 8 Channel Cinema sound

I'm considering to buy either http://www.novatech.co.uk/products/components/powersupplies/cmpsu-600cxv2uk.html
This psu has the same dimensions as my current psu.

Or, http://www.overclockers.co.uk/showproduct.php?prodid=CA-053-CS&groupid=701&catid=123&subcat=


Will either of these work effectively with my system or do you have any better suggestions?

Thanks for any help, appreciated!

 

[harryprs]

You are certain? My new graphics card says it should work with a min 400w power supply and then my processor will take(not 100% certain) 100w

 

[amuffin]

Nope, it's fine!

 

[harryprs]

400w bottom of the barrel PSU. the corsair CX series are solid budget models that offer far more power then your scrap yard 400w unit.

Thanks for the recommendation, read a review and ordered one in. Now I just have to wait for the diamond jubilee to finish so they can get it to me..