I notice large benchmark score increases on both the memory and core overclocks. My crystal orb should be here either today or tomorrow....I might be able to hold 233 steady then. Right now, it works for one or two runs through 3DMark, then crashes, so I think it's heat. The memory does fine very high. I've done as high as 530 without a crash (535 is fubar), but I won't keep it that high. I think I'll keep it at 520 for benchmarking, 500 for all other times, and with my ORB, I'll do 233 for benchmarking, 220 for all other times.
220/500 for constant use isn't a ti500, but it's damn close.