I'm about to get me a new computer but need to know what graphic card to get.

I'm having crashes in Hair room (with both SreeD and openGL) which apparently is due to my graphic card. I'd like to know if any of you that have used the hair room a bit or a lot and have had no crashes when styling hair could tell me what graphic card you have. I could use info on computer specs too.

Any advice on setup for a new computer would be much appreciated.