Road To Overclocking

mihir

mihir

VIP Member
So I finally decided to overclock even thought I have a hot-chip but I just decided to F@#K that.
NOTE:This is the First Time I overclocked a CPU.

So I used two guides
First this one - http://www.bit-tech.net/hardware/cpus/2008/11/06/overclocking-intel-core-i7-920/1

Which was a quick and dirty and a brainless overclock.

And another guide which I quite liked - http://www.overclock.net/intel-cpus/538439-guide-overclocking-core-i7-920-930-a.html

For all methods my turbomode,speed step and CiE and all spread spectrums wre turned off and LLC was turned On.
Using the first method.

My setting were
BCLK Frequency - 200(MHz)
DRAM Frequency - 1,600MHz
CPU PLL Voltage - 1.96V
QPI/DRAM Voltage - 1.35V
DRAM Voltage - 1.66V


Which gave me an unstable overclock of 4.0GHz+.I only had enough time to run Superpi mod and got the score of 10.28s for 1M.


Then since i encountered BSOD 0x124.

So I then I tried the other guide.
So here were my settings.

Multiplier - 21x(For all)


First Try.
BCLK - 143MHz
Memory - 8x BCLK
QPI - 18x BCLK
Uncore - 2x BCLK
CPU PLL - 1.88V
VCORE - 1.3V
QPI/Uncore - 1.3V

Got a stable overclock of 3.003GHz


Second Try
BCLK - 163MHz
Memory - 8x BCLK
QPI - 18x BCLK
Uncore - 2x BCLK
CPU PLL - 1.88V
VCORE - 1.3V
QPI/Uncore - 1.3V

Got a stable overclock of 3.423GHz

Third Try
BCLK - 183MHz
Memory - 8x BCLK
QPI - 18x BCLK
Uncore - 2x BCLK
CPU PLL - 1.88V
VCORE - 1.3V
QPI/Uncore - 1.3V

Unstable Overclock of 3.843GHz

Fourth Try
BCLK - 183MHz
Memory - 8x BCLK
QPI - 18x BCLK
Uncore - 2x BCLK
CPU PLL - 1.88V
VCORE - 1.3125V
QPI/Uncore - 1.3125V
Stable Overclock of 3.843GHz


Fifth Try
BCLK - 203MHz
Memory - 8x BCLK
QPI - 18x BCLK
Uncore - 2x BCLK
CPU PLL - 1.88V
VCORE - 1.3125V
QPI/Uncore - 1.3125V

Failed.


Sixth Try
BCLK - 203MHz
Memory - 8x BCLK
QPI - 18x BCLK
Uncore - 2x BCLK
CPU PLL - 1.88V
VCORE - 1.325V
QPI/Uncore - 1.325V

Failed.


Seventh Try
BCLK - 203MHz
Memory - 8x BCLK
QPI - 18x BCLK
Uncore - 2x BCLK
CPU PLL - 1.88V
VCORE - 1.3375V
QPI/Uncore - 1.3375V

Failed.



Eightth Try
BCLK - 203MHz
Memory - 8x BCLK
QPI - 18x BCLK
Uncore - 2x BCLK
CPU PLL - 1.88V
VCORE - 1.35V
QPI/Uncore - 1.35V

Failed.


Ninth Try
BCLK - 203MHz
Memory - 8x BCLK
QPI - 18x BCLK
Uncore - 2x BCLK
CPU PLL - 1.88V
VCORE - 1.4V
QPI/Uncore - 1.4V

Failed.


Tenth Try
BCLK - 193MHz
Memory - 8x BCLK
QPI - 18x BCLK
Uncore - 2x BCLK
CPU PLL - 1.88V
VCORE - 1.35V
QPI/Uncore - 1.35V

Failed.



Eleventg Try
BCLK - 193MHz
Memory - 8x BCLK
QPI - 18x BCLK
Uncore - 2x BCLK
CPU PLL - 1.88V
VCORE - 1.4V
QPI/Uncore - 1.4V

Failed.





So my final config is


Fourth Try
BCLK - 183MHz
Memory - 8x BCLK
QPI - 18x BCLK
Uncore - 2x BCLK
CPU PLL - 1.88V
VCORE - 1.3125V
QPI/Uncore - 1.3125V
Stable Overclock of 3.843GHz


From the above I have deduced that I have the worst Core i7 920 chip ever manufactured.
The Chip is hot the worst overclocker.
And I also have an ambient temperature of 37C
So Now it idles at 49C and Max outs on 79C.


So please comment.

Also any suggestions or criticism welcome and desired.
 
Last edited:
79 degrees is probably a little high for normal use as the chips function normally up to around 80 degrees. it's fine for benching, but for normal use you might want to tone down the OC. good try though!
 
Perkomate said:
79 degrees is probably a little high for normal use as the chips function normally up to around 80 degrees. it's fine for benching, but for normal use you might want to tone down the OC. good try though!
Click to expand...

My chip never goes to full load.Max is 40% since I dont use it for video converting or any other torture stressing tasks so I think I will be okay with 79C(100%).
 
haha fair enough. they can run all the way up to 95 degrees without failing, but i don't have the balls to push mine that far. Personally, I think that 85 would be destroying the chip too much
 
What multi are you using on the cpu..? 19x 21x ?/

Why in the hell is your cpu pll so high? lower it to 1.7
 
Perkomate said:
haha fair enough. they can run all the way up to 95 degrees without failing, but i don't have the balls to push mine that far. Personally, I think that 85 would be destroying the chip too much
Click to expand...

No an i7 920 goes upto 100C without shutting down.
http://www.computerforum.com/175025-i7-temps-worry.html
It has done the same for me.



jasonn20 said:
What multi are you using on the cpu..? 19x 21x ?/

Why in the hell is your cpu pll so high? lower it to 1.7
Click to expand...


I am using 21x Multiplier.
As I told you this was my first time overclocking so I did not know what PLL value to use.So in the guide it was mentioned that 1.88V is a stable value.
Thank you will try that.
Also would it help in lowering my temps or would it just reduce the power consumption.If it helps in reducing my temps then I will give it a go otherwise will leave it as it is.


Also should I turn off Hyper Threading and then try 4GHz or is it a bad idea?
 
cpu pll at 1.9+ is out of safe zone..... yeah I imagine it would help your temps as well... it normally should default to 1.8 but almost always 1.7 is better
 
jasonn20 said:
cpu pll at 1.9+ is out of safe zone..... yeah I imagine it would help your temps as well... it normally should default to 1.8 but almost always 1.7 is better
Click to expand...

I tried 1.96 for only one overclock otherwise for all the other it was set to 1.88.
If it helps my temperatures I will try keeping it on 1.7
 
@mihir, turning off hyper threading will lower your temps a bit from what i've heard. but the only downside is that you won't have as many threads to process on.
 
Perkomate said:
@mihir, turning off hyper threading will lower your temps a bit from what i've heard. but the only downside is that you won't have as many threads to process on.
Click to expand...

Only benchmarking will have a conclusive answer.3.8GHz with hyperthreading or 4.05GHz witout hyper threading.
 
mihir said:
Only benchmarking will have a conclusive answer.3.8GHz with hyperthreading or 4.05GHz witout hyper threading.
Click to expand...

why I got the 2500K, I don't have to make that desicion :P
i think this has already been asked, but what cooler are you running with?
 
sorry bout that. nice cooler though! something's up if you're getting temps that high on a cooler like that :S
 
Perkomate said:
sorry bout that. nice cooler though! something's up if you're getting temps that high on a cooler like that :S
Click to expand...

From 122 replies from another thread I posted it was concluded that I simply have a HOT-CHIP which I should RMA and also very High Ambient Temps.
So I am already aware of that and am not able to do anything.:mad:
 
mihir said:
From 122 replies from another thread I posted it was concluded that I simply have a HOT-CHIP which I should RMA and also very High Ambient Temps.
So I am already aware of that and am not able to do anything.:mad:
Click to expand...

reset your bios and start things over...
 
mihir said:
From 122 replies from another thread I posted it was concluded that I simply have a HOT-CHIP which I should RMA and also very High Ambient Temps.
So I am already aware of that and am not able to do anything.:mad:
Click to expand...
It sounds like you've already taken all of the appropriate thermal paste measures. :) If not, then definitely try to reapply a thinner layer of paste, and try something like Rosewill RCX-TC090PRO:
http://www.newegg.com/Product/Product.aspx?Item=N82E16835200060&Tpk=Rosewill thermal compound
^Great paste - I was amazed at how easily it spread. It comes with a brush, and has a much thinner consistency then most pastes.

As for the temps: it depends how long it stays at 79C. If it stays in the low 70s after hours of CoreDamage (http://damage.vigilantesoftware.com/), and occasionally spikes up to 79, then you'll probably be fine. If it averages at around 79C running CoreDamage, then you'll have a bit of a problem. I fried my old Celly D after running it up into the 80s after a few minutes. Granted, I accidentally turned off thermal throttling in the BIOS, and it didn't quite "fry," but I definitely damaged it. I would suggest keeping it under 75C.

As a last resort, you could try liquid cooling. Of course, that gets pricey. :eek:

Also, make sure not to disable hyperthreading. You'll decrease performance significantly in apps that take advantage of >4 cores. ;)
 
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