i7 920 overclocking thread

[NCspecV81]

Okay guys! This is all I'm doing right now b/c I want to play some L4D and Fear 2. I'll get a longer run in. I know this is an i7 920 thread, but I don't see any other i7 overclocking threads that are stable clocks. I'm at the max readable temps as it does not read any further below -22 or -14 on the IHS. This is also reflective in the BIOS. However, I'm not sure if I can lower the voltage. For some reason it does not allow me to undervolt past 1.23v unless I use EIST, then I have changing clock speeds all the time.

[zlojack]

Very nice!

[overclockerz]

Hi guys! I am using the Asus P6T Deluxe mobo and here is mine BIOS setting for mine core i7 920 @3.90Ghz. I am using BIOS vcore 1.31v. Max temperature on hottest core after 1 hour 20 mins on Prime95 small FFT test is 86 degree.

Ai Overclock Tuner = Manual
CPU Ratio Setting = 20.0
BCLK Frequency = 195
PCIE Frequency = 100
DRAM Frequency = DDR3-1173 MHz
UCLK Frequency = 2346MHz
QPI Link Data Rate = 7038MT/s
DRAM Timing Control = 8-8-8-24
CPU Voltage = 1.31250
CPU PLL Voltage = 1.88
QPI/DRAM Core Voltage = 1.35000
IOH Voltage = 1.10
IOH PCIE Voltage = 1.50
ICH Voltage = 1.20
ICH PCIE Voltage = 1.50
DRAM Bus Voltage = 1.60
Loadline Calibration = Enabled
CPU Differential Amplitude = Auto
CPU Clock Skew = Auto
CPU Spread Spectrum = Disabled
IOH Clock Skew = Auto
PCIE Spread Spectrum = Disabled
C1E Support = Enabled
Hardware Prefetcher = Enabled
Adjacent Cache Line Prefetch = Enabled
Intel Virtualization Tech = Enabled
CPU TM Function = Enabled
Execute Disable Bit = Enabled
Intel HT Technology = Enabled
Active Processor Cores = ALL
A20M = Disabled
Intel C-STATE TECH = Disabled
ACPI 2.0 Support = Disabled
ACPI APIC Support = Enabled

I seriously believe there are many parts which should be tweaked to enhance my overclock. Can anyone point out to me which part to adjust further?

[gooddog]

Originally Posted by overclockerz

Hi guys! I am using the Asus P6T Deluxe mobo and here is mine BIOS setting for mine core i7 920 @3.90Ghz. I am using BIOS vcore 1.31v. Max temperature on hottest core after 1 hour 20 mins on Prime95 small FFT test is 86 degree.

Ai Overclock Tuner = Manual
CPU Ratio Setting = 20.0
BCLK Frequency = 195
PCIE Frequency = 100
DRAM Frequency = DDR3-1173 MHz
UCLK Frequency = 2346MHz
QPI Link Data Rate = 7038MT/s
DRAM Timing Control = 8-8-8-24
CPU Voltage = 1.31250


I seriously believe there are many parts which should be tweaked to enhance my overclock. Can anyone point out to me which part to adjust further?

raise your vcore. some do 4G at that voltage, but not all. start at 1.34 and if successful back off from there

also lower your memory speed for now just to make sure it isn't the memory that is holding you back

[speedy2721]

What is the max temps on these chips? Isn't 86C a little to high?

[NCspecV81]

Done a quick linx/IBT test with HT off. Letting prime95 run overnight and see what happens.


So far 4.403GHz @ 1.36v

[overclockerz]

Originally Posted by speedy2721

What is the max temps on these chips? Isn't 86C a little to high?

The max temperature is 100 degree as stated by Intel themselves.

Oh yah, i am running mine DDR3 1600MHz ram @1173MHz now. Since my ram is running at speed way slower than the stock speed of 1600MHz, i am looking to tighten my ram timing from stock 8-8-8-24 to 7-7-7-24. If i were to tighten the dram timing, what voltage do i need to pump up?

Uncore volt? DRAM voltage?

Please advise.

[NCspecV81]

okay 5.5hrs prime is good enough for me. 4.404GHz @ 1.36v

[Blameless]

Originally Posted by speedy2721

What is the max temps on these chips? Isn't 86C a little to high?

~100C, just like every other chip with a 100C tjmax.

85C may or may not be fine depending on your voltage.

Unless you load at 1.4v+, it's probably not going to do any harm, except in the extreme long term.

[jrharvey]

Originally Posted by Extreme Newbie

The BIOS is always the best way to overclock. To get to 3.4 try a CPU ratio of 20 with a BLCK of 170. CPU voltage should be at stock for 3.4GHz unless you have a real bad chip.
Monitor temps with RealTemp while you run Prime95.

Good luck

I normally dont mess around with these programs BUT I was very surprised to find that it is actually a great program. I went from 2.66ghz to 3.8ghz (Turbo Off) completely stable in prime 95 for an hour and a half. Granted its not a 6 hour run but the chip started to hit 80c so I figured it was good enough. For the first time ever I may actually use a software overclock tool to give that extra umph. Ill probably keep a 24/7 BIOS OC of 3.4-3.5 to keep the voltages low and use TurboV to bump it up only when I need it. Its actaully good. I know, I can't believe it but it works. Only problem is that you can only change CPU clock, CPU and RAM Voltages and QPI voltage.