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450-500w Powersupply help

by Marcus.Pollard / August 13, 2010 7:28 PM PDT

Hello there, this is my first post on the forums and I was wondering if I may obtain some help about upgrading/selecting a PSU for my pc it has to be 450-500w due to an upgrade I'm preforming on my graphics card from nvidia 7300SE to a ATI radeon HD 5750.

My computer specs are:
Operating System: Windows Vista? Ultimate (6.0, Build 6001) Service Pack 1 (6001.vistasp1_gdr.100608-0458)
Language: English (Regional Setting: English)
System Manufacturer: MEDIONPC
System Model: MS-7187
BIOS: Phoenix - AwardBIOS v6.00PG
Processor: Intel(R) Pentium(R) D CPU 3.40GHz (2 CPUs), ~3.4GHz
Memory: 2046MB RAM
Page File: 1682MB used, 2660MB available

Drive: C:
Free Space: 8.6 GB
Total Space: 238.5 GB
File System: NTFS
Model: WDC WD2500JS-22NCB1 ATA Device

Drive: H:
Free Space: 254.6 GB
Total Space: 476.9 GB
File System: NTFS
Model: Hitachi HDP725050GLA360 ATA Device

The Specs for the card are:

PCI Express

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