Hi, i would like to have some help on overclocking my core i7 920 to the fastest speed possible also these are the specs i have which i hope these will help you to assist me. here are all the options i use at the moment which seems to be the best and power i got so far on my own. i have had it at 4 ghz but it keep getting error 124 but i thought it best to go up in steps i.e to 3.4, 3.6, 3.8 ghz etc.... cheers CPU Clock Ratio [20 X] CPU Frequency 3.20GHz(160x20) > Advanced CPU Features [Press Enter] QPI Link Speed [x36] QPI Link Speed(MT) 5.76GHz > UnCore & QPI Features [Press Enter] Base Clock(BCLK) Control [Enabled] BCLK Frequency(Mhz) [160] > Advanced Clock Control [Press Enter] Performance Enhance [Standard] Extreme Memory Profile(X.M.P.) [Disabled] System Memory Multiplier (SPD) [10.0] Memory Frequency(Mhz) 1066 1600 DRAM Timing Selectable (SPD) [Expert] Profile DDR Voltage 1.5V Profile QPI Voltage 1.175V >>>>> Channel A CAS Latency Time 8 [ 8] tRCD 8 [ 8] tRP 8 [ 8] tRAS 20 [ 24] Command Rate(CMD) 1 [Auto] >>>>> Channel B CAS Latency Time 8 [ 8] tRCD 8 [ 8] tRP 8 [ 8] tRAS 20 [ 24] Command Rate(CMD) 1 [Auto] >>>>> Channel C CAS Latency Time 8 [ 8] tRCD 8 [ 8] tRP 8 [ 8] tRAS 20 [ 24] Command Rate(CMD) 1 [Auto] > Advanced DRAM Features [Press Enter] Voltages Types Normal Current ---------------------------------------------------- Load-Line Calibration [Disabled] CPU Vcore 1.23125V [1.30000V] QPI/Vtt Voltage 1.175V [1.175V] IOH Core 1.100V [1.100V] DRAM Voltage 1.500V [1.600V] Advanced Voltage Control [Press Enter] CPU: Intel Core i7 920 D0 (160x21 3.36ghz with ht on and turbo on ) Cooler: Corsair Hydro H50 Motherboard: Gigabyte GA-EX58-UD3R v1.0 (bios is f8d ) Ram: Corsair Dominator CM3X1G1866C9D (it can run at 1867 mhz with xmp on) only running at 1600mhz at 8-8-8-24 1T Case : Lancool k58
I did it by setting CPU volts and QPI/Vtt to 1.3v, underclocking RAM to 6x and the corresponding multi to 2xRAM then increased BCLK to 150, 160, 170 etc til I was happy. Then drop BCLK down 5, tightened RAM speed up and timings especially. Finally worked the volts back down.