Wow a lot of replies!

So to answer the questions.  I am using MSI Afterburner to do the overclocking and I do have the unofficial OC enabled.

The Brand is Sapphire and the model I believe is 100297-2L  Let me know if that doesn't make sense. (this one does vent into the case)

This is in a machine that my wife has to use daily so it has to be stable and usable.  If I underclock the mem to 300-325 will it be noticeable when using the windows areo?  My temps aren't bad the case is an NZXT PanzerBox case with 2 300mm fans plus one 120 in the back. I'm currently running around 66C with an ambient room temp of ~72F.

I don't think it's a PSU issue,  the supply is an XFX XXX 650W it has two dedicated 6-pins and is only powering the system and this card. Core 2 Duo 3.016 GHz

I am only getting around 287 Mhashs which I think is a little low.  For reference here are the CL options copied directly from the phoenix guiminer.  -k phatk VECTORS BFI_INT AGRESSION=9 FASTLOOP=TRUE