Windows 7: need advice on which computer is better?

I have a buddy who is selling his HP pavilion computer (CHEAP!) which has intel pent g640 dual core with 2.8ghz and 6gb (upgradable to 32gb) of ram and if I buy it I plan on putting a 500w power supply and of course a better vid card and the computer I have now that I wanna replace with the HP is a no name brand intel quad core Q6600 2.4 4gb ram (MAX) and I wanna be able to game on it like I can do on my no name brand comp...is the one I have now more powerful than the HP? thanks

I would go with the one that you could add more RAM to later on. As far as gaming is concerned more RAM is always a good thing imho of course.

well although thats KINDA true, RAM isn't everything...I don't wanna get this other computer if the CPU will be the bottle neck...even though I can slap in more ram....thanks for your input! does anyone else have any more input?

The one with the Q6600 would be faster in games, I would think, if all else is equal. To me, buying the HP would be a downgrade.

If you are willing to spend the money on the HP, then why not just add or save up a little extra and build a new PC yourself?

because my buddy was selling this to me for dirt cheap...plus my Q6600 is getting old and the box is yuck! LOL but I guess I will keep it for now and pass on the HP...thanks for the input guys

Save the money as the start of funds for a new computer, then. That HP's processor is a step backwards in power.

A dual core Pentium is going to get spanked by a Core 2 Quad machine. That would be a downgrade for sure.