Upgrading HP Pavilion a6863w

[thirteenthmuse]

The people on here were so helpful a few weeks ago when I needed upgrade information for my computer, that I thought you guys could help me out again with my husband's computer. I am wanting to upgrade his graphics card and probably the PSU for a Christmas gift this year.

APPROXIMATE PURCHASE DATE: Most likely around Christmas, unless I just happen to find some awesome deals sooner.

BUDGET RANGE: $100-$140

USAGE FROM MOST TO LEAST IMPORTANT: Gaming. He plays World of Warcraft, Diablo III, Civilization.

CURRENT GPU AND POWER SUPPLY: ATI Radeon HD 3200 and a 300w PSU

OTHER RELEVANT SYSTEM SPECS:
HP Pavilion a6863w
AMD Phenom 9150e Quad-Core Processor 1.80 GHZ
Windows Vista Home Premium 64 bit
7 GB Ram
750 GB HD

PREFERRED WEBSITE(S) FOR PARTS: I would prefer Amazon as I have some Amazon Credit to use, but I am open to buying from a good site if the prices are right.

PARTS PREFERENCES: No preference

OVERCLOCKING: Probably not
SLI OR CROSSFIRE: Probably not

MONITOR RESOLUTION: 1920x1080

ADDITIONAL COMMENTS:
I recently upgraded another computer to a Radeon 6670 card and a Corsair 500w PSU with really good results with World of Warcraft. If possible, will these same products work with the computer I am asking about?

 

[mohit9206]

yes if you get a 6670 then you wont need to upgrade his psu.. but since his monitor resolution is 1080p a 6670 wont cut it unless he ok with low settings. 7750 is most you can get without changing the psu. just get the 7750 . its better than 6670, wont require psu upgrade and its in your budget too at just $100.
http://www.amazon.com/Sapphire-11202-00-20G-Radeon-PCI-Express-Graphics/dp/B007B5V614/ref=sr_1_1?ie=UTF8&qid=1347731637&sr=8-1&keywords=hd7750+low+profile

 

[thirteenthmuse]

Why do you say a 6670 won't cut it for a monitor with 1920x 1080? It is what I have installed on my computer and it seems to work fine with that resolution.