For the past 36 hours I haven't done anything but to tweak my mobo to reach 4 GHz with a C0. I know,difficult and I can vouch for that. Cooling is not an issue for me. 76 C was the highest I had with 1.42V. VX + MX3 + Shroud + 55 lbs pressure, it gives the best temps like this.
I am rock solid stable at 3.8 GHz, 3.85 GHz, 3.9 GHz and 3.95 GHz. I want to hit 4.0 GHz with no significant bandwidth loss. My memory is CL7 rated at 1333 MHz so I am forced to use x6 as a multiplier. Also, I use x19 for the CPU because it needs less voltage than x20 and x21 to be stable at the above mentioned frequencies. In my quest to hit 4.0 GHz, for the last 36 hours, I managed to get this far : IBT, LinX, SuperPi 1.5 X no problems. 1 hour P95 on blend and it crashes. I don't know what else to do without adding 220 V on that CPU. Can anyone shed some light? I would love to get this thing stable without losing too much performance in other areas.
Code:>>>> Advanced CPU Features: CPU Clock Ratio .............................. [19x] Intel(R) Turbo Boost Tech .................. [Disabled] CPU Cores Enabled ...........................[All] CPU Multi Threading ......................... [Enabled] CPU Enhanced Halt (C1E) ................. [Enabled] C3/C6/C7 State Support .................... [Disabled] CPU Thermal Monitor ........................ [Enabled] CPU EIST Function ........................... [Enabled] Virtualization Technology ................... [Enabled] Bi-Directional PROCHOT ................... [Enabled] >>>> Uncore & QPI Features: QPI Clock Ratio .............................. x36 Uncore Frequency .......................... x16 Isonchronous Frequency ..................[Enabled] >>>> Standard Clock Control: Base Clock (BCLK) Control ................ [Enabled] BCLK Frequency (MHz) ..................... [211] PCI Express Frequency (MHz) ........... [101] C.I.A.2 ............................................. [Disabled] >>>> Advanced Clock Control: CPU Clock Drive .............................. [800mV] PCI Express Clock Drive ................... [900mV] CPU Clock Skew ............................. [0ps] IOH Clock Skew ...............................[0ps] >>>> Advanced DRAM Features: Performance Enhance ........................ [Extreme] Extreme Memory Profile (X.M.P) ......... [Profile1] System Memory Multiplier (SPD) ........ [6] DRAM Timing Selectable (SPD) .......... [Expert] Channel A + B + C Channel A Timing Settings: >>>> Channel A Standard Timing Control CAS Latency Time ................... 7 tRCD .......................................7 tRP ......................................... 7 tRAS ....................................... 18 >>>> Channel A Advanced Timing Control tRC ........................................ Auto tRRD .......................................Auto tWTR ......................................Auto tWR ........................................Auto tWTP ...................................... Auto tWL ........................................ Auto tRFC ....................................... Auto tRTP ....................................... Auto tFAW ...................................... Auto Command Rate (CMD) ............... 2T >>>> Channel A Misc Timing Control B2B CAS Delay ....................... Auto Round Trip Latency .................. Auto Advanced Voltage Control: >>>> CPU Load Line Calibration ................. [Enabled] CPU Vcore ............................... [Normal] Dynamic Vcore(DVID) ............... [+ 0.2000] QPI/VTT Voltage 1.150v ............ [1.380] CPU PLL 1.800v ....................... [1.88] >>>> MCH/ICH PCIE 1.500v ........................... [1.500] QPI PLL 1.100v ...................... [1.200] IOH Core 1.100v ..................... [1.100] ICH I/O 1.500v ....................... [1.500] ICH Core 1.1v ........................ [1.100] >>>> DRAM DRAM Voltage 1.500v .............. [1.62] DRAM Termination 0.750v ........ [0.820] Ch-A Data VRef. 0.750v ........... [0.820] Ch-B Data VRef. 0.750v ........... [0.820] Ch-C Data VRef. 0.750v ........... [0.820] Ch-A Address VRef. 0.750v ...... [0.820] Ch-B Address VRef. 0.750v ...... [0.820] Ch-C Address VRef. 0.750v ...... [0.820]
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Originally Posted by jayhall0315
. Indeed, using 20 and 21 will yield other settings and I've tried them but with the lower BCLK everest and MaxMem reports are not encouraging. I even used UnCore x13 (2x +1 ) with x21 multi and I was hitting 14.1 GB/s. With my current settings I am hitting 15.3 GB/s.
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