How To Overclock Core i7 920 to 4.0GHz? Help?

[wick001]

Here is my system:

Core i7 920
Gigabyte UD5
6 gigs G.Skill 1333
Coolermaster V8
Sapphire 4870x2

Right now I have my system at 3.8GHz. All I did was increase the Bclk to 183mhz, anything above that fails.

What settings do I need to get 4.0+ stable?

Please Help!

 

[Liderc]

Careful just raising your bclock, if you have your memory on auto it will increase your ram speeds above spec.

Try this-
Disable turbo mode
Bclock-200
CPU clock-20x
Uncore-12x

Memory-2:6

Vcore 1.4
Vtt +200

 

[wick001]

Can you tell me the exact numbers to set with my setup to achieve 4.0GHz +?

 

[Liderc]

All chips/mobo's vary when overclocking, use the settings I put up in my first post, they're for 4.0 and turn off all power saving features in the bios. I would suggest going to your motherboards website and seeing if they have a overclocking forums, that is the best way to learn to overclock a new mobo/cpu. I'm using EVGA's X58 and I'm sure it overclocks a lot different than your Gigabite x58.

 

[wick001]

Whats VVT +200? Mine lists voltage 1.4,1.5 etc...

 

[Liderc]

1.4

 

[wick001]

ok,

I can only get 3.8GHz...
190
x36
6.0 mem
V-core 1.5
GPI/VVT 1.52

That seems really high

 

[cjl]

1.5 vcore? That is really high - significantly above spec.

 

[Liderc]

It's not above spec, but you can't be running a 920 with a x36 multiplyer, so something is up=x I would suggest putting your settings back to default to prevent any damage.

 

[wick001]

no my qpi was at 36...

 

[wick001]

Ok, finally got it stable... Here are my specs:

Core i7 920 / Gigabyte UD5 / G.Skill 1333 DDR3 6 gigs / Sapphire 4870x2 / Coolermaster V8

Core Speed: 4011.0 MHz
qpi link: 3438.4 MHz
Multiplier x21.0 (turbo mode)

Bclk: 191
Turbo Mode: On
Qpi: X36
V-Core: 1.5v-1.472v
Qpi/vtt: 1.52v
Ram 1528mhz / 8.0 / x17
All Power options off

Idle Temp According to EasyTune6 - 35c / Real Temp 2.70- 43c
100% Load Temp EasyTune6 - 61c / Real Temp 83c

CoolerMaster V8 installed

3DMark Vantage Score on Performance Setting

P17223

GPU 15680 / CPU 24437

 

[Liderc]

Need to download real temp 2.9, it's for I7's. I have a feeling your temps are much higher than that with such a high vcore.

 

[wick001]

I can't find real temp 2.9 only 2.7

 

[wick001]

According RealTemp 2.90, my max was 90c...

I don't understand how my motherboard (ud5), is so much lower than this RealTemp program... How do you know which one is correct?

 

[wick001]

CPU-Z Says my Core Voltage is 1.472... Is this acceptable?

 

[stephen69]

dude my i7 is at clock i want mine at 3.6 what voltiges do i change

 

[ninja_unmatched]

I think a better opton to ensure voltages is to try getting the ASUS Rampage II Extreme board. Anybody else have any thoughts on this?

 

[t33lo]

I can get stable 4.0 at around 1.36V, 1.5 is really high. do you have C0 or D0 stepping?It should say under the "revision" area in cpu-z.