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i7 920 c0/c1 4Ghz Help

post #1 of 3
Thread Starter 
Hi I've been running my i7 920 @ 3.6 Ghz for quite some time and decided to try and go for 4Ghz. I'm not very experienced with overclocking so this has been a learning experience. Anyways I'm looking for some help and suggestions for my current setup.


My rig:
i7 920 c0/c1
Asus p6t motherboard
For cooling im running the Corsair H80 liquid cooler
Corsair XMS3 1600 8-8-8-24 RAM
EVGA gtx 570
750w corsair power supply

BIOS:
C1E Disabled
SpeedStep Disabled
Hyperthreading Enabled

CPU Ratio Setting 21
BCLK Frequency 191
PCIE Frequency 100
DRAM Frequency 1531MHz
UCLK Frequency 3063MHz
QPI Link Data Rate 6893MT/s (From what I've read the 920 uses 18x so i picked the lowest setting, but i honestly don't understand that setting)

DRAM Timing Control
DRAM CAS# Latency 8
DRAM RAS# to CAS# Delay 8
DRAM RAS# Pre Time 8
DRAM RAS# ACT Time 24

DRAM Timing Mode 2N
The rest is auto

CPU Voltage 1.3500
CPU PLL Voltage 1.88
QPI/DRAM Core Voltage 1.27500
DRAM Bus Voltage 1.66

Load-Line Calibration Enabled
CPU Spread Spectrum Disabled
PCIE Spread Spectrum Disabled

At these current settings I ran Prime95 Small FFTs overnight for 8 hours, then Blend for 4 hours before I got Bluescreen 101 which suggests I should add Vcore. What I'm worried about is my temperatures got up to about 88 C during Prime, and ~45 C Idle.

Should I back down to 3.8? Or can I manage 4? Any suggestions anyone has to offer is greatly appreciated!

Thanks! biggrin.gif
post #2 of 3
I would stay at 3.8, you won't notice much difference in 200mhz overclock unless you have a cherry picked chip. I would stay away from 88c also lol.
Asus G74Sx-BBK8
(10 items)
 
   
CPUMotherboardGraphicsRAM
Intel Core i7 2670QM G74Sx-BBK8 NVIDIA GeForce GTX 560M 2gb Overclocked 2x4gb Samsung 1333MHz 
Hard DriveHard DriveOptical DriveOS
WD Scorpio Black 500gb WD Scorpio Black 500gb Slimtype DVD Writer Windows 7 Home Premium x64 
MonitorMouse
17.3" 1600x900 Logitech M515 
CPUMotherboardGraphicsRAM
Intel Pentium T2080 Toshiba A135 Intel 945gma 2gb DDR2 
Hard DriveOptical DriveOSMonitor
120gb Fitjitsu Matshita DVD-Writer Vista Home Premium x86 15.4" 1280x800 
  hide details  
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Asus G74Sx-BBK8
(10 items)
 
   
CPUMotherboardGraphicsRAM
Intel Core i7 2670QM G74Sx-BBK8 NVIDIA GeForce GTX 560M 2gb Overclocked 2x4gb Samsung 1333MHz 
Hard DriveHard DriveOptical DriveOS
WD Scorpio Black 500gb WD Scorpio Black 500gb Slimtype DVD Writer Windows 7 Home Premium x64 
MonitorMouse
17.3" 1600x900 Logitech M515 
CPUMotherboardGraphicsRAM
Intel Pentium T2080 Toshiba A135 Intel 945gma 2gb DDR2 
Hard DriveOptical DriveOSMonitor
120gb Fitjitsu Matshita DVD-Writer Vista Home Premium x86 15.4" 1280x800 
  hide details  
Reply
post #3 of 3
Thread Starter 
Yeah that's what i was thinking. I just wanted to see if there was a way I could hit 4Ghz safely before I quit on it
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