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24-12-2008, 11:45 AM
#6 (permalink)
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i7 920 @4016Mhz
Pushing cpu past 4Ghz was easy, just set multiplier to 20 with 201BCLK. Bumped vcore in bios to 1.3375v and left vdimm and CPU VTT at 1.68v and 1.44v respectively. CPUZ reports 1.36v idle and 1.328v load.
Swapped out 128MB Gainward FX5200 PCI card for single HIS HD4870x2 video card with official 8.12 Catalyst drivers. I ran 32M twice as first time i cut off part of the screenshot for SG displayed voltages
- Super Pi 1M = 10.125s
- Super Pi 8M = 1m 52.813s
- Super Pi 32M = 9m 04.656s and 2nd run 9m 04.735s
- 3Dmark06 @750/900 = 25,941
System specs- Intel Core i7 920 3836A756
- Thermalright Ultra 120 Extreme + LGA1366 Bolt Thru kit
- DFI LP UT X58-T3EH8 R.A51
- HIS HD4870x2 stock hsf + 8.12 CAT
- 2x1GB Corsair TW3X2G2133C9DF Dominator 9-9-9-24 at 2.0v rated (Samsung ICs)
- 750GB Samsung HD753LJ
- Pioneer DVD-RW
- 1KW Corsair HX1000 psu
- WinXP Pro SP3 nLite fully updated
Bios settings used:
Code:
Genie BIOS Setting
CPU Feature
Set VR Current Limit Max: Disabled
Thermal Management Control: Disabled
EIST Function: Disabled
CxE Function: Disabled
Execute Disable Bit: Disabled
Virtualization Technology: Disabled
TDC Enable: Disabled
x TDC Limit: 0
TDP Enable: Disabled
x TDP Limit: 0
***** Logical Processor Setting *****
Intel HT Technology: Enabled
Active Processor Cores: All
DRAM Timing
Memory Control Setting: AUTO
Memory LowGap: 1536M
DRAM Command Rate: AUTO/1N/2N etc
CAS Latency Time (tCL): 9
RAS# to CAS# Delay (tRCD): 9
RAS# Precharge (tRP): 9
Precharge Delay (tRAS): 24
REF to ACT Delay (tRFC): AUTO
Write to PRE Delay (tWR): AUTO
Rank Write to Read (tWTR): AUTO
ACT to ACT Delay (tRRD): AUTO
Row Cycle Time (tRC): AUTO
Read CAS# Precharge (tRTP): AUTO
Four ACT WIN Time (tFAW): AUTO
Voltage Setting
O.C. Shut Down Free: Enable O.C.S.D.F
CPU VID Control: 1.3375v
CPU VID Special Add Limit: Enabled
CPU VID Special Add: Auto
Vcore Droop Control: Enabled
DRAM Bus Voltage: 1.680v
DRAM PWM Switch Frequency: Nominal
DRAM PWM Phase Control: 2 Phase Operation
CPU VTT Special Add: AUTO
CPU VTT Voltage: 1.44v
VTT PWM Switch Frequency: Nominal
VTT PWM Phase Control: 2 Phase Operation
CPU PLL Voltage: 1.80v
IOH/ICH 1.1V Voltage: 1.11v
IOH Analog Voltage: 1.10v
ICH 1.5 Voltage: 1.5v
ICH 1.05V Voltage: 1.05v
DIMM 1/2 DQ/DQSTB Bus VREF: -00.0%
DIMM 3/4 DQ/DQSTB Bus VREF: -00.0%
DIMM 5/6 DQ/DQSTB Bus VREF: -00.0%
ADDR/CMD VREF Control: Disabled
x DIMM 1/2 ADDR/CMD Bus VREF: 110
x DIMM 3/4 ADDR/CMD Bus VREF: 110
x DIMM 5/6 ADDR/CMD Bus VREF: 110
CPU QPI Drive Strength: Normal
IOH QPI Drive Strength: Normal
Exit Setup Shut down: Mode 2
O.C. Fail Retry Counter: Enabled
O.C. Fail CMOS Reload: Disabled
PPM Function: Enabled
Turbo Mode Function: Disabled
1 core Max Turbo Ratio: 26x
2 core Max Turbo Ratio: 25x
3 core Max Turbo Ratio: 25x
4 core Max Turbo Ratio: 25x
CPU Non-Turbo Clock Ratio: 20x
* BCLK/UCLK/QPI Controller Settings *
QPI Control Settings: Enabled
QPI Link Fast Mode: Enabled
QPI Frequency: AUTO
CPU Base Clock (BCLK): 201 Mhz
Boot Up CPU Base Clock: AUTO
PCIE Clock: 100 Mhz
DRAM Frequency: 1333Mhz (ratio referenced to default 133 bclk - so 1333Mhz /133Mhz = 10x DRAM multiplier)
UnCore Frequency: 2666Mhz (optimal to keep Uncore at 2x DRAM Frequency)
CPU Spread Spectrum: Disabled
PCIE Spread Spectrum: Disabled