Hi there. I have a HP Pavillion a1620.uk with a psu of 300watts. I have just purchased an Nvidia GeForce 7600GT to replace my current 7300LE. The only reason is that im a PLAYER of The Sims 2 and have 6 expansions plus the original base game. I have been having crashing issues since day one due to my video card being so bad. Hopefully my new card will solve my problem but i need to upgrade my psu to at least 450watts. I really need some help with this...i know how to install a new graphics card and have done it before but i have no idea about psu's and all the numbers that surround them! My system specs are as follows :

Operating System:
Windows XP Professional (5.1, Build 2600) Service Pack 2 (2600.xpsp_sp2_gdr.070227-2254)
Language: English (Regional Setting: English)
System Manufacturer: HP Pavilion 061
System Model: RJ059AA-ABU a1620.uk
BIOS: Phoenix - AwardBIOS v6.00PG
Processor: Intel(R) Pentium(R) D CPU 2.80GHz (2 CPUs)
Memory: 1022MB RAM
Page File: 567MB used, 1890MB available
Windows Dir: C:\WINDOWS
DirectX Version: DirectX 9.0c (4.09.0000.0904)
DX Setup Parameters: Not found
DxDiag Version: 5.03.2600.2180 32bit Unicode

If you need any more INFORMATION in order to help me please let me know.
Thankyou!!




Psu are not that hard to fit. Just make sure that as you disconnect the cables that you make a note of where they go, that way when it comes to putting them BACK, you know where to put them. 450watt psu will be fine. But pay a little more and get a good one.Do i not need a certain one to fit into my tower? All the info LISTED about the computer is listed below. I think it's a micro tower.

http://www.ciao.co.uk/HP_Pavilion_Media_Center_a1620_uk_Pentium_D_820_2_8_GHz__6688422#productdetail