Actually unless I'm mistaken all there is is the 5750 and 5770, which isn't a huge different between the two, so..... yeah...
Regardless there are tons of ways. DXDIAG, CPU-z, Device Manager, open the case and look at that card, are some easy ways.
DXDIAG, CPU-z, Catalyst Control Center, Device Manager and DeviceID only say it's a 5700 series and not which 5700. But, I'm satisfied that there isn't a huge difference between them so it isn't a bother anymore then. Opening my case is a bit of a pain so I guess I'll find out next time I do an upgrade in there.
Thanks for the info!