Overclock core i7 920xm

The BIOS is going to handle overclocking on an i7 CPU differently than the way you guys think it will. The BIOS for any of the current i7 notebooks that includes overclocking is also probably a very early version.

http://forum.notebookreview.com/showpost.php?p=5615177&postcount=745

 

From what I understand the i7 920XM in high performance operates at 2.0GHz (15x133). Then there is Turbo Boost that can boost the multiplicator on all 4 cores by 2 (17x133 = 2261) or the multi of 3 cores by 2 (17*333 = 2261) or 2 cores by 8 (23*133 = 3059) or 1 core by 9 (24*133).

I understand that you could raise the turbo multi in the bios by 1 - 4. So you could achieve a multi of 17+2+4 (21*133 = 2793) on all 4 cores?

 

this is just so that people cant distribute the bios thats why

good news for you though!

 

In my post, my premise is that the options for overclocking in the BIOS affect the max bins added by Turbo Boost. It does not touch the HFM bin at all.

Nothing will change by unlocking multipliers as Turbo Boost and the ACPI are in control of the CPU here. With 4x bins unlocked, the 920XM will forever remain at 2GHz HFM and plus two bins induced by Turbo Boost when the CPU temperatures are below 60*C. In short, no, it is not going to give you 15+2+4. Had that been possible, a lot of people, not including myself, would have stuck with the 1.00.01 BIOS.

 

3 different notebooks offer OC'ing the i7 proc and all 3 handle it differently...nice.

 

does the NP8760 (W870CU) allow for overclocking of the i7 820qm or just the i7 920xm? just curious as i ordered one from xoticpc last night with the 820 qm and still have time to change my order around.

 

I7 820QM can`t be overclocked.

 

Just the 920 XM

 

eh, oh well. im not much of an overclocker anyways.

 

Hi guys.
In the Sager suppor site there is a new version of bios.
The 1.00.11.

I think that this is compatible with my notebook because is for Sager Np8120 (Clevo X8100) and this version have the multipliers unlocked.

What do you think?

What is the best method to downgrade bios?
Where i download my version (1.00.13) if i want return from 1.00.11 to 1.00.13?

 

Ahoy necromancer.

Why worry about the BIOS when you can just use Trottlestop, which is a much more effective solution. Without adjusting the TDP values, your chip is just going to throttle way below whatever you overclock it to.

 

How to i set the multipliers max with this tool?
And in "Turbo Power Limits" how much is the value? 55w or more?

When i download the last versions of clevo bios?

 

The Throttlestop guide thread is here.

For the BIOS, there is a "Clevo BIOS Thread" here in the Sager forum. But there's really no need that I know of to update your BIOS.

 

Anyway don't expect much with overclocking if you have a W8X0cu like me. The max I could get is 20/20/25/26 with 55 tdc/tdp. Increasing TDP/TDC, even by 5 completely shutdown my laptop without warning (Even with a 160W psu) and no overheat.

 

Sounds to me like something isn't working correctly for you.

 

Yeah well... I really would like to found out what it is.

 

Are you running the newest BIOS?

If so, I would clean install to remove possible driver/software issues. Try the newest Throttlestop as well. It shouldn't be doing that, I can get mine up to 90TDP without any issues.

 

I have .18s LS3 installed with EC .14 (all the lastest). Without overclocking and TDP/TDC at 70 (don't know if i need to increase both) my system BSOD if I start a game. If i put the TDP/TDC at 60, my computer just shutdown completely without warning after 15 min of gameplay. wprime report no error at all... I really don't know what's the problem.

EDIT : Everything seem stable if i leave TDC at 55. Running 20/20/26/27 right now at 70 TDP

 

Do you get a higher multiplier under load without moving the TDC?

 

Given ur situation, i will sell the 920XM and get a cheaper processor, cause no point having the best, but unable to use its power.

 

Seem so. I will need to make some more testing.

 

Hi,
i have try many combination with Throttlestop but with FSX (that is an hard cpu benchmark test at the same of prime 95) my system freeze any time!
At 27/26/21/21 at 75 FSX crash after 5 minutes.
The same is at 27/26/21/20 and 27/24/20/20.
Now at 26/24/20/20 at 60 TDP i fly for 50 minutes with pmdg 747 (an hard airplane that requise many performance) without problems. After this time, when use the external view (requise hard permance) my pc freeze!
Why many users take oc around 3,8ghz without problems and me, that have the same cpu have freeze and crashes? It's possible that is a problem of Hdd high temperatures?

 

Where did you get your system from ?

 

A tdp of 60 is hardly sufficient. Other throttlestop users report needing at least 75 to OC to the twenties.

 

Hi guys, after many months i retry to overclock My i7 920xm!
I have not found a compromise in order to keep stable the PC! can you give me a hand with the TDP? There are many users who have pushed their processor @29x stable! because I can not get to me? the temperature is good, about 75/80 C but I still BSOD!
Now i have chance the bios with the 1.00.11oc but the problem is not solve!
Sorry if i have resume an hold topic but...this is My ;-)!!!

Tank you for your help!!!!!

 

Anyone help me?
Now i have configured throttlestop so:
27/27/23/22 at 80
I want increase the Core 1 at 28 but every Time uprgade this value,have BSOD!!!

Why???

 

Not all CPUs are created equally and they can not all overclock the same amount. Hardly any 920XM CPUs can run reliably with a 1 core multiplier of 28. If you can run 1 core with a multiplier of 26 or better then you are doing great.

Can you post some links to all these users successfully running a 29 multiplier? Make sure to include a ThrottleStop log while running 8 threads of wPrime. CPU-Z screen shots that show a 29 multiplier while the CPU is idle are meaningless.

 

Now i'm not found the users that use TS @29
Yesterday i have take many tests, the most stable is 28/27/24/20 @79 TDP
I have test geekbench with a point of 7819, it's good or not?

If i use wprime with 8 core at 1024, but after +/-1 minutes my notebook switch off!
It's good the test with geekbench for you?

Other users with 920xm at this have upgrade FSB with setfsb.
The upgrade is from 133 to 145, with throttlestop @27 have 3,9Ghz
If use the same PLL, freeze my notebook, who know the PLL for M980NU?

If i can get FSB @145 i can keep the multiplier x27 and make system more stable, when using the multoplier x28

 

If the 20 multiplier causes your laptop to shut off when running wPrime for 1 minute, your overclock is not even close to stable. Your CPU is probably over heating.

It's nice you can pass GeekBench but that is not a good test of stability. If your 28 multiplier is stable then you should have no problem running 1 thread of Prime95 or wPrime without overheating or crashing or getting errors.

You need to improve the cooling, overclock less or be happy with an unstable laptop. Using SetFSB will only create more heat and make your laptop less stable.

 

Hi guys.
I have a modded bios for x8100 with additional features unlocked but is a big problem to config.

I have attach 3 jpeg with my advanced options.

Who help me in this hard job?

 

Is that AMIBIOS?

 

No this is Phoenix Bios...

 

I wanted to unlock the advanced functions in the AMIBIOS, but without success.
Good luck!

 

Do you have try this site?

Bios Mods -The Best BIOS Update and Modification Source

 

Anyone have a tutorial to config a Phoenix bios for overclock??

 

I have understand how to use the bios with this trick:

TDP & TDC limits are power & current limits when Turbo Boost should be decreasing. The calculation is like this:-
Code:
For example, TDP limit = 178h = 376 (decimal)

The value is in 1/8ths:-
376 / 8 = 47W

x-Core Ratio Limit where x is a number of active core(s). So, the number set in these fields are the max multiplier.
Code:
For example, 2-cores active:-
2-Core Ratio Limit = 17h = 23 (decimal)

So, the max multiplier when 2-cores active are x23.

So, to overclock, need to increased these numbers.


My consideration: for a good overclock and for don't have an high multiplier that stress too the cpu is increase the Mhz of FSB (133 to 140/144, view M18x)
After we have increase the Fsb, you can take a good overclock with a smaller multiplier.

In ex:

28x133=3,7 ------ hard stress for cpu because the multplier is too high
27x140=3,78-3,8 ----- more stable cpu for a smaller multplier
27x144=3,9 ------ setting of Dell M18x. More stable and high performance (Function not prensent in Poenix Bios )