I am using Radeon HD4850 and it appears to be getting too old now. There seem to be 2 of them in my Acer Aspire Predator desktop. I am not very technically minded, and I don't really want my pc to disappear for as long as Curry's/PC World will keep it if I ask them to do the upgrade. I just need to know what I should upgrade my cards to? I could find out the motherboard name if that is necessary. I don't know how to find out how powerful the power supply is. It is running Windows 10 64 bit, 4Gig RAM and 2.5 Ghz quad core. The pc is used mostly for gaming.