i have a old crt and i was wondering if i could use it for gaming or if i should upgrade to a lcd??? thanks
Depends entirely on the size.
If you're talking about an old CRT
15" - 1024x768
17" - 1280x1024
19" - 1280x1024 - some of the newer ones can manage 1600x1200.
21" - 1600x1200 and 1920x1440 for some of the better CRTs
I have a 22" that does 1920x1440 @ 85Hz