Mac Pro and freezing

[Whplayer65]

I was wondering if anyone else has encountered a problem with their mac pro freezing up at random times. I've had this computer for a good 4-5 years and recently (mainly playing games), it has randomly locked up on occasion. I cleaned it out with some canned air as well as sprayed off the video card which had some dust built up on the vents and this stopped the problem for a little while but it has recently flared up again. It only happening during games leads me to believe it is a gfx card error, but it has only recently started freezing within the last month or so and I have never had any problems out of it before. Any help would be well appreciated!

 

[Dr.Pants]

What video card do you have, first off? Whatever it is, it sounds like its dying. This freezing issue, the machine becomes unresponsive? Or does it actually give a kernel panic?

 

[Whplayer65]

What video card do you have, first off? Whatever it is, it sounds like its dying. This freezing issue, the machine becomes unresponsive? Or does it actually give a kernel panic?

Currently have ATY,RadeonX1900. The machine just becomes unresponsive no errors pops up, the mouse remains movable for awhile also after it has frozen up.