I want to point out, I am trying to follow the posting guidelines but I don't know how to find all my system specs and details so first and foremost I need help on exactly which specs I need to identify and a general idea on how to do that. If there is a guide to that posted on the site I have not found it.
APPROXIMATE PURCHASE DATE: This week
USAGE: PC gaming - D3 and other new popular PC games as they come out. Not looking to run max settings on crysis or something just want to have enough power to run new games on medium to high settings
CURRENT GPU AND POWER SUPPLY:Current GPU: GeForce G210 500MB, Power supply have no idea
OTHER RELEVANT SYSTEM SPECS: Not sure what info is relevant and how to get it. I have a 2 year old HP that I bought and it came assembled
PREFERRED WEBSITE(S) FOR PARTS: would prefer to use newegg - getting some other componants from there this week as well
PARTS PREFERENCES: would prefer to use an NVidia card
SLI OR CROSSFIRE on't know what this is probably not gonna need this
MONITOR RESOLUTION: 1440x900
ADDITIONAL COMMENTS:budget is $100, $150 if that is really going to be better for me. Really need help understanding how to assess the specs of my system
Well since you posted the model number of your computer, I found it for you! 350w, certainly not bad.
Since you don't sound like you have much experience with computers, I'd recommend this card! http://www.newegg.com/Product/Product.aspx?Item=N82E168... It does not require a 6-pin PEG connector from your PSU, it gets all its power from the PCIe slot (its the most powerful card that does that!) Its performance would be miles ahead of your G210.
Edit: Poster above beat me too it and recommended the same GPU! Haha either one works, I just recommended the MSI version because of the dual fan design.