It is rock stable at 840 core, 1125 memory. I am still testing it to see if it is stable at 1175 memory with 840 core.
I also managed to make my CPU to run stable at 4.1ghz!(this is for regular usage and with air cooling) I ran 3dmark Vantage in the Performance setting and in the High setting. Here are the results: P9052 for the Performance setting with my CPU scoring 8135 and GPU scored 9406. For the High setting it gave me H6100 with my CPU scoring 8002 and the 4870 GPU scored 5854. I ran the fan at 100% for the testing, it ran pretty cool.
I'll post my new vantage score if I can run it at 1175 memory. Possible get a little more CPU too... its really close though, not much room left!
