Quote Originally Posted by dejanh View Post
Sure, let's see what you max BCLK is to start...also, please post your system configuration and current settings...

Drop your multiplier to 12x, then set your BCLK to 170MHz to start. Set your CPU Voltage to 1.35V, and your QPI Voltage (VTT Voltage) to 1.35V, and make sure your DRAM voltage is set to 1.65V (or very close to that). Also, set your memory to a low multiplier so that you are running your memory below its rated speed. Try to boot Windows. If you boot fine, restart and increase your BCLK by 10MHz to 180MHz. Then if you boot again, increase it by another 10MHz until you get to 200MHz. After 200MHz increase your BCLK in 5MHz increments until you get to 215MHz. Then increase it in 1MHz increments and see if you can boot.

If at any point you cannot boot, increase your QPI Voltage (VTT Voltage) by 0.025V and try again. Keep increasing it by that amount until you can boot at the given BCLK. Do not exceed 1.475V on QPI. For example, if you cannot boot at 190MHz with 1.35V QPI and you increase the voltage twice (2 x 0.025V) to 1.4V QPI and then you boot fine, you need a minimum 1.4V QPI for 190MHz BCLK. If you want to be sure that the given BCLK is stable then take the minimum QPI voltage required to boot and add about 0.025V to 0.05V to it.

By the way, check your private messages. I need some help from you as well.
Sorry, been busy with my Honours thesis so I haven't been able to do this yet.

However, I've tried Vcore at 1.400, QPI/VTT at 1.360, VDIMM at 1.660 and CPU PLL at 1.88 before and couldn't get prime stable with 18, 19, 20 times multis with Bclk over 190. I could boot into windows in most instances. I've set Memory and Uncore multis to 6x/(12x or 13x) and 8x/(16x or 17x) respectively. According to GB's Easy Tune 6, at load Vcore dropped to 1.360 and VDimm to 1.616. I am using Prime 95, CPU-Z and RealTemp to stress and monitor.

I know that I should have tried finding my max Bclk, but I was still hoping at the time that I could just get to 4.0GHz with ease (apparently not).

Now I'll have to wait until I get some University stuff sorted before I can try again. Thanks for the suggestions though.