Need power supply suggestion for new GPU

[KangDango]

Hey,

I recently bought an ATI HD 4350 for this Compaq PC:

http://h10025.www1.hp.com/ewfrf/wc/document?docname=c00526415&tmp_task=prodinfoCategory&lc=en&dlc=en&cc=uk&product=1147958

After installing I noticed that the PC is not performing as it once did. It got really slow. I was told to get a new PSU. I've been looking at these ones:

http://www.scan.co.uk/products/600w-storm-storm-600w-black-edition-23db-120mm-silent-fan-black-atx12v-v20

and

http://www.ebuyer.com/product/120674

Would these be compatible with my computer? Would I need adapters for my current hardware? I'm clueless when it comes to power supplies.

I appreciate all help given Thank you.

 

[KangDango]

Hi ct1615,

Thanks for the reply. I should have mentioned that I don't want to spend over £25 for a new PSU. I know its cheap but its being used for a media PC.

I think the 4th of July is just an American celebration (When you guys got independence from the British).

Any other suggestions?