i7 920 Bios settings 4.0GHz > 4.2GHZ Via A Gigabyte X58:UD5 - Note:CPU-Z reads cpu voltage as 1.312v at 100% Load, even though it is set at 1.33125v in the Bios due to voltage drop.If you use DVID the CPU voltage drops to 1.024v on idle.
Hi, as one or two are still trying to get their best from their i7 920, heres my Bios settings mines was overclocked from day one at 4.0GHz them over a couple of weeks tweaked the Bios so now at 4.2 Stable over three years. Use these settings as a guide you might have to adjust the voltages slightly as all CPU's are not equal and dram voltage, get overclocking, best of luck and remember keep an eye on your temps.
BIOS SETTINGS 4.2GHz/4.0GHz OC.
------------------------
CPU CLOCK RATIO x BCLK FREQUENCY[MHz]=CPU Speed-21x191MHz=4.0GHz > 21x200MHz=4.2GHz.
[A]Auto/[E]Enabled [Di]Disabled/D= default/Dv= defaultvolts/[A]Auto/--"--v > volts as above.
Adavanced CPU Features >
CPU CLOCK RATIO----------D= [a] - 21=4.0GHz/21=4.2GHz
INTEL(R)TURBO BOOST------D= [A] - E
CPU CORES E---------------D= [ALL]
CPU MULTI THREADING------D= [A] - E
CPU ENHANCED HALT (C1E)--D= [A] - E
C3/C6/C7 STATE SUPPORT---D= [A] - D
CPU THERMAL MONTIOR------D= [A] - E
CPU EIST FUNCTION---------D= [A] - E
VIRTUALIZATION TECH-------D= [A] - E
BI-DIRECTIONAL PROCHOT---D= [A] - E
UNCORE & QPI FEATURES >
QPI LINK SPEED-------------D= [A] - 36
UNCORE FREQUENCY---------D= [A] - 16
ISONCHORNOUS FREQUENCY--D= [A] - E
INTERGRATED PERIPHERALS >
ICH SATA CONTROL MODE----D= [IDE] ACHI setting for a SSD.
[A]Auto/[E]Enabled [Di]Disabled/D= default/Dv= defaultvolts/[A]Auto/--"--v > volts as above.
STANDARD CLOCK CONTROL >
BASE CLOCK[BLCK]CONTROL--D= [A] - E
BCLK FREQUENCY [MHz]-----D= [A] - 191=4.0GHz / 201=4.2GHz
PCI EXPRESS FREQ[MHz]----D= [A] - 100
C.I.A.2------------------D= [A] - D
ADVANCED CLOCK CONTROL >
CPU CLOCK DRIVE---------Dv= [A-OPS] - 800mv
PCI EXPRESS CLOCK DR----Dv= [A-OPS] - 900mv
CPU CLOCK SKEW----------Dv= [A-Ops] - 000MV
IOH CLOCK SKEW----------Dv= [A-Ops] - 000MV
ADVANCED DRAM FEATURES >
PERFORMCE ENHANCE---------D= [A] - TURBO
EXTREME MEMORY PRO[XMP]--D= [A] - D
SYSTEM MEMORY MULTI[SPD]-D= [A] - 8x=1608mhZ
DRAM TIMING SELECT[SPD]----D= [A] - EXPERT
CHANNEL A+B+C TIMINGS SETTINGS[ALL THE SAME] > ##CHANNEL STANDARD TIMING CONTROL##[memory timings] >
CAS LATENCY TIME-------D= [A] - 9
TRCD--------------------D= [A] - 9
TRP---------------------D= [A] - 9
TRAS--------------------D= [A] - 24
CR----------------------D= [A] - 2
CHANNEL A+B+C TIMINGS SETTINGS[ALL THE SAME] >##CHANNEL ADVANCED TIMING CONTROL##
TRC-----------------D= [A]
TRRD----------------D= [A]
TWTR----------------D= [A]
TWR-----------------D= [A]
TWTP----------------D= [A]
TWL-----------------D= [A]
TRFC----------------D= [A]
TRTP----------------D= [A]
TFAW----------------D= [A]
COMMAND RATE[CMD] D= [1]
[A]Auto/[E]Enabled [Di]Disabled/D= default/Dv= defaultvolts/[A]Auto/--"--v > volts as above.
CHANNEL A+B+C TIMINGS SETTINGS[ALL THE SAME] >
##CHANNEL MISC TIMMINGS##
ROUND TRIP LATENCY--D= [A]
ADVANCED VOLTAGE CONTROL >
CPU >LOADLINE CALIBRATION-D= [a] STANDARD - LEVEL 1 - LEVEL 2 ---> ENABLED TO Level 1 = 4.0GHz / 4.2GHz.
CPU VCORE Dv= 1.256250v-CPU default speed 2.66GHz > Overclocked set to 1.32500v=4.0GHz/1.33125=4.2GHZ.
DYMANIC VCORE[DVID]-D= [A] DVID set to NORMAL- voltage set to 0.07500v DVID @ 4.2 / voltage set to 0.06875v DVID @ 4.0GHz
Default[A] adjusted to correct voltage settings when CPU IS Overclocked for stability.
QPI/VTT VOLTAGE--D= [A] 1.315v>1.335v
CPU PLL----------D= [A] 1.800v
[A]Auto/[E]Enabled [Di]Disabled/D= default/Dv= defaultvolts/[A]Auto/--"--v > volts as above.
MCH/ICH >
QPI PLL------------D= [A] 1.140v
IOH CORE----------D= [A] 1.100v>1.200V
ICH I/O------------D= [A] 1.500v
ICH CORE----------D= [A] 1.100V>1.400V
DRAM >
DRAM VOLTAGE------D= [A] 1.540v
DRAM TERMINATION--D= [A] 0.750v
CH-A DATA VREF----D= [A] 0.750v
CH-B DATA VREF----D= [A] --"--v
CH-C DATA VREF----D= [A] --"--v
CH-A ADDRESS VREF-D= [A] 0.750v
CH-B ADDRESS VREF-D= [A] --"--v
CH-C ADDRESS VREF-D= [A] --"--v
--------------------------------------
A quick guide of how to enable Dynamic Vcore:
1. you need to know voltage needed for your OC under 100% load
2. you need to know your cpu's default voltage (can differ between identical cpu models!)
To find out both get CPU-Z. Load into windows and start CPU-Z, ie > start Linx, when the CPU is at 100% load check CPU-Z voltage. That's your load voltage.
Then go into the bios, set cpu vcore to normal. Lower your multi so you get around 2.8ghz speed at full load (imitating default speed). Boot into Windows
and load your CPU 100% again, check CPU-Z while doing that to find out what is your normal voltage!
Now you're almost done, go into the bios again, set/leave cpu vcore at "normal", go into advanced voltage settings and set dynamic vcore at number closest
to number derived from (VCORE_UNDER_LOAD_OC - VCORE_UNDER_LOAD_DEFAULT)
Hope this helps Oldphart.
Hi, as one or two are still trying to get their best from their i7 920, heres my Bios settings mines was overclocked from day one at 4.0GHz them over a couple of weeks tweaked the Bios so now at 4.2 Stable over three years. Use these settings as a guide you might have to adjust the voltages slightly as all CPU's are not equal and dram voltage, get overclocking, best of luck and remember keep an eye on your temps.
BIOS SETTINGS 4.2GHz/4.0GHz OC.
------------------------
CPU CLOCK RATIO x BCLK FREQUENCY[MHz]=CPU Speed-21x191MHz=4.0GHz > 21x200MHz=4.2GHz.
[A]Auto/[E]Enabled [Di]Disabled/D= default/Dv= defaultvolts/[A]Auto/--"--v > volts as above.
Adavanced CPU Features >
CPU CLOCK RATIO----------D= [a] - 21=4.0GHz/21=4.2GHz
INTEL(R)TURBO BOOST------D= [A] - E
CPU CORES E---------------D= [ALL]
CPU MULTI THREADING------D= [A] - E
CPU ENHANCED HALT (C1E)--D= [A] - E
C3/C6/C7 STATE SUPPORT---D= [A] - D
CPU THERMAL MONTIOR------D= [A] - E
CPU EIST FUNCTION---------D= [A] - E
VIRTUALIZATION TECH-------D= [A] - E
BI-DIRECTIONAL PROCHOT---D= [A] - E
UNCORE & QPI FEATURES >
QPI LINK SPEED-------------D= [A] - 36
UNCORE FREQUENCY---------D= [A] - 16
ISONCHORNOUS FREQUENCY--D= [A] - E
INTERGRATED PERIPHERALS >
ICH SATA CONTROL MODE----D= [IDE] ACHI setting for a SSD.
[A]Auto/[E]Enabled [Di]Disabled/D= default/Dv= defaultvolts/[A]Auto/--"--v > volts as above.
STANDARD CLOCK CONTROL >
BASE CLOCK[BLCK]CONTROL--D= [A] - E
BCLK FREQUENCY [MHz]-----D= [A] - 191=4.0GHz / 201=4.2GHz
PCI EXPRESS FREQ[MHz]----D= [A] - 100
C.I.A.2------------------D= [A] - D
ADVANCED CLOCK CONTROL >
CPU CLOCK DRIVE---------Dv= [A-OPS] - 800mv
PCI EXPRESS CLOCK DR----Dv= [A-OPS] - 900mv
CPU CLOCK SKEW----------Dv= [A-Ops] - 000MV
IOH CLOCK SKEW----------Dv= [A-Ops] - 000MV
ADVANCED DRAM FEATURES >
PERFORMCE ENHANCE---------D= [A] - TURBO
EXTREME MEMORY PRO[XMP]--D= [A] - D
SYSTEM MEMORY MULTI[SPD]-D= [A] - 8x=1608mhZ
DRAM TIMING SELECT[SPD]----D= [A] - EXPERT
CHANNEL A+B+C TIMINGS SETTINGS[ALL THE SAME] > ##CHANNEL STANDARD TIMING CONTROL##[memory timings] >
CAS LATENCY TIME-------D= [A] - 9
TRCD--------------------D= [A] - 9
TRP---------------------D= [A] - 9
TRAS--------------------D= [A] - 24
CR----------------------D= [A] - 2
CHANNEL A+B+C TIMINGS SETTINGS[ALL THE SAME] >##CHANNEL ADVANCED TIMING CONTROL##
TRC-----------------D= [A]
TRRD----------------D= [A]
TWTR----------------D= [A]
TWR-----------------D= [A]
TWTP----------------D= [A]
TWL-----------------D= [A]
TRFC----------------D= [A]
TRTP----------------D= [A]
TFAW----------------D= [A]
COMMAND RATE[CMD] D= [1]
[A]Auto/[E]Enabled [Di]Disabled/D= default/Dv= defaultvolts/[A]Auto/--"--v > volts as above.
CHANNEL A+B+C TIMINGS SETTINGS[ALL THE SAME] >
##CHANNEL MISC TIMMINGS##
ROUND TRIP LATENCY--D= [A]
ADVANCED VOLTAGE CONTROL >
CPU >LOADLINE CALIBRATION-D= [a] STANDARD - LEVEL 1 - LEVEL 2 ---> ENABLED TO Level 1 = 4.0GHz / 4.2GHz.
CPU VCORE Dv= 1.256250v-CPU default speed 2.66GHz > Overclocked set to 1.32500v=4.0GHz/1.33125=4.2GHZ.
DYMANIC VCORE[DVID]-D= [A] DVID set to NORMAL- voltage set to 0.07500v DVID @ 4.2 / voltage set to 0.06875v DVID @ 4.0GHz
Default[A] adjusted to correct voltage settings when CPU IS Overclocked for stability.
QPI/VTT VOLTAGE--D= [A] 1.315v>1.335v
CPU PLL----------D= [A] 1.800v
[A]Auto/[E]Enabled [Di]Disabled/D= default/Dv= defaultvolts/[A]Auto/--"--v > volts as above.
MCH/ICH >
QPI PLL------------D= [A] 1.140v
IOH CORE----------D= [A] 1.100v>1.200V
ICH I/O------------D= [A] 1.500v
ICH CORE----------D= [A] 1.100V>1.400V
DRAM >
DRAM VOLTAGE------D= [A] 1.540v
DRAM TERMINATION--D= [A] 0.750v
CH-A DATA VREF----D= [A] 0.750v
CH-B DATA VREF----D= [A] --"--v
CH-C DATA VREF----D= [A] --"--v
CH-A ADDRESS VREF-D= [A] 0.750v
CH-B ADDRESS VREF-D= [A] --"--v
CH-C ADDRESS VREF-D= [A] --"--v
--------------------------------------
A quick guide of how to enable Dynamic Vcore:
1. you need to know voltage needed for your OC under 100% load
2. you need to know your cpu's default voltage (can differ between identical cpu models!)
To find out both get CPU-Z. Load into windows and start CPU-Z, ie > start Linx, when the CPU is at 100% load check CPU-Z voltage. That's your load voltage.
Then go into the bios, set cpu vcore to normal. Lower your multi so you get around 2.8ghz speed at full load (imitating default speed). Boot into Windows
and load your CPU 100% again, check CPU-Z while doing that to find out what is your normal voltage!
Now you're almost done, go into the bios again, set/leave cpu vcore at "normal", go into advanced voltage settings and set dynamic vcore at number closest
to number derived from (VCORE_UNDER_LOAD_OC - VCORE_UNDER_LOAD_DEFAULT)
Hope this helps Oldphart.
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