Computer Upgrades

I just ordered four 1 gigabyte memory sticks for my computer from Dell. Only about $88 for all four memory sticks. Wow 4 GB of RAM for $88 bucks. Pretty good if you ask me. Now I suppose I could have found it at an even less expensive price somewhere but I like buying upgrades for my Dell XPS from Dell.

As for this PC, I currently have two 512MB sticks in there and will replace them with the four new memory sticks. My Dell XPS will hold a maximum of 4GB of RAM and that is what I am putting into it. So can someone tell me, what is this going to do for my PC's performance? I figure to be buying a few nice PC games in the near future and am hoping the extra RAM will make them play at their best or at least better than with less memory.

Next up, a new operating system from Windows, no not VISTA but whatever comes out next.
My PC is 4 years old, or just a tad older, but I figure I'll get at least 2 or 3 more years out of it therefore the upgrades. I may buy a new one next year, and if I do then this upgraded one will go to my son who currently is using one that is about 7 years old.

All the best,
Glenn B