4 gigs of memory and Call of Duty 4 looks awesome.

[jab635]

Just upgraded my system from 2 gigs of ram to 4. Amazing is all I can say. Call of Duty 4 Demo runs super smooth at 1920*1080 all settings maxed out. Awhile back I said that nobody needs 2 gigs of ram. I couldn't have been more wrong. I can't wait till my job rolls out Vista so I can get a free copy. When I get Vista I would love to try out 8 gigs of speedy ddr2 ram.
Crysis looks great too. I can run 1366*768 with the XP setting hack silky.

[dreamtfk]

Did you notice a substantial difference in general with games and apps? What about boot times etc?

I am running 32-bit Vista though so I will only get the performance of about 3.5GB from what I've read, I dont want the driver support problems that come with 64. I've really been contemplating upgrading to more than 2GB since prices are so low.

[Finny]

Yeah, I'm wondering about the same things... Vista on my machine doesn't seem to use over 1gb of ram at any given time or over 1.7 in any games so far...

[jab635]

I noticed that my system was using 2.1 gb of memory. I knew it would improve my pc performance. If you are not sure if it will help you read the Tweak Guide. Its a free download and a great first step to pc tuning before spending money on new hardware.
http://www.tweakguides.com/TGTC.html