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MBA2012 CTO model is turbo boost disable under windows 7

I've downloaded Throttlestop 4.0. but still don't understand what I have to do to correct the CPU multiplier and enable the turbo boost feature - could someone walk me through this? Thanks

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oxfordguy said:
I've downloaded Throttlestop 4.0. but still don't understand what I have to do to correct the CPU multiplier and enable the turbo boost feature - could someone walk me through this? Thanks
Click to expand...

Also - is is actually beta to use the Throttlestop 5.0 beta (e.g. from here) for the Ivy Bridge 2012 i7 MBA?

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oxfordguy said:
I've downloaded Throttlestop 4.0. but still don't understand what I have to do to correct the CPU multiplier and enable the turbo boost feature - could someone walk me through this? Thanks

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Also - is is actually beta to use the Throttlestop 5.0 beta (e.g. from here) for the Ivy Bridge 2012 i7 MBA?
Click to expand...

and do I need to change the multiplier (from 19) or just turn Throttlestop "on"?
 
and do I need to change the multiplier (from 19) or just turn Throttlestop "on"?
Click to expand...

read ThrottleStopDocs.html.
check out "Do Not Reset FID / VID on Exit", and "Turn Off" and "Turn On".
 
unclewebb said:
ThrottleStop 5.00
http://www.techinferno.com/downloads/

The latest version supports the new Ivy Bridge CPUs when running Windows.

ThrottleStop can not interfere with the thermal management built into these CPUs by Intel. No software can bypass Intel hardware from throttling if it truly needs to.
Click to expand...

It works like a charm. I started it up, set the "Set Multiplier" setting to turbo (toggle it up to 32), and CPU-Z confirmed it was turbo boosting to the full level whenever I ran something intensive. I ran the WEI and it increased the CPU score from 6.3 to 7.1 and the memory score from 7.2 to 7.5.

What I can't tell is whether it has any impact on the GPU turbo boost.
 
KPOM said:
It works like a charm. I started it up, set the "Set Multiplier" setting to turbo (toggle it up to 32), and CPU-Z confirmed it was turbo boosting to the full level whenever I ran something intensive.
Click to expand...

If doing this, does it only kick into turbo mode when needed, or does it run in turbo mode all the time?

KPOM said:
I ran the WEI and it increased the CPU score from 6.3 to 7.1 and the memory score from 7.2 to 7.5.

What I can't tell is whether it has any impact on the GPU turbo boost.
Click to expand...

Did it improve your "Windows Experience Index" for Gaming Graphics?
 
oxfordguy said:
Did it improve your "Windows Experience Index" for Gaming Graphics?
Click to expand...

It will not improve the WEI for Gaming Graphics. Simply put, that WEI is for 99% percent dependent on the GPU and RAM, not the CPU. Turbo Boost has almost no influence there. My T430s with a true i7 at 2.9Ghz (3.5Ghz) also has a WEI of 6.5 on Gaming Graphics.
 
KPOM said:
Only when necessary. What it does is increase the maximum step up from 19x to 32x.
Click to expand...

Okay, great. I presume this is safe to use from a thermal management perspective?

KPOM said:
No. It is still 6.5. Do you know what the i5 MacBook Airs are scoring?
Click to expand...

Well (without Throttlestop) - I only got a "Gaming Graphics" score of 5.3 when I last ran the Windows Experience thing with my 2012 i7 8Gb MBA, which is worse than on my early-2008 MBP,which scored 6.1 for its Nvidia 8600 GT 512Mb GPU... :(
 
BTW these are the full Windows Experience figures I got with my 2012 i7 8Gb Macbook Air (without Throttlestop) last time I ran this:

CPU - 6.4
RAM - 7.2
Computing (Windows) Graphics - 5.9
Gaming Graphics - 5.3 (seems very low?)
Disk - 7.9
 
oxfordguy said:
BTW these are the full Windows Experience figures I got with my 2012 i7 8Gb Macbook Air (without Throttlestop) last time I ran this:

CPU - 6.4
RAM - 7.2
Computing (Windows) Graphics - 5.9
Gaming Graphics - 5.3 (seems very low?)
Disk - 7.9
Click to expand...

I got 6.5 for both graphics scores, with and without Throttlestop. I am using the Boot Camp drivers as the Intel HD4000 drivers from Intel's web site wouldn't load.
 
KPOM said:
I got 6.5 for both graphics scores, with and without Throttlestop. I am using the Boot Camp drivers as the Intel HD4000 drivers from Intel's web site wouldn't load.
Click to expand...

That's odd, I'm using the Boot Camp drivers too. Is this with the same spec machine (i7/8Gb RAM)? Windows 7 64 bit?
 
oxfordguy said:
That's odd, I'm using the Boot Camp drivers too. Is this with the same spec machine (i7/8Gb RAM)? Windows 7 64 bit?
Click to expand...

Yes. Did you migrate the Boot Camp partition from an old machine (such as by using Winclone)? If so, check to make sure that the old drivers aren't still there.
 
workaround2

use MSR Editor (CrystalCPUID)

http://crystalmark.info/software/CrystalCPUID/index-e.html

run CrystalCPUID.exe, Function->MSR Editor, set values and press WRMSR. repeat CPU1-CPU4.

MSR Number 0x00000199
WRMSR EDX-> 0x00000000 EAX-> 0x00002000

MSR.png


see my post
https://forums.macrumors.com/posts/15240228/
 
Last edited:
So, it appears you have to run the MSR editor every time you boot into windows as that register clears the new value at startup.

I didn't have luck with throttle stop because I wasnt clear on how to use it, the MSR editor worked for me however, I wonder if there's a CLI for the MSR editor to change at startup?

Btw this appears to work for Windows 8 as well with a large boost in CPU and RAM score in WEI. CPU-Z shows turboboosting working well too.
 
goinskiing said:
I didn't have luck with throttle stop because I wasnt clear on how to use it, the MSR editor worked for me however, I wonder if there's a CLI for the MSR editor to change at startup?
Click to expand...

Just unzip it to a folder and click on the Throttlestop icon. A dialog box will pop up. The "Set Multiplier" setting is about halfway down the box. Set that to its maximum setting (32, which will display as "Turbo").
 
KPOM said:
Just unzip it to a folder and click on the Throttlestop icon. A dialog box will pop up. The "Set Multiplier" setting is about halfway down the box. Set that to its maximum setting (32, which will display as "Turbo").
Click to expand...


Is there a way to get this to run automatically on starting Windows, or at least to save settings, so you don't have to reset the multiplier each time? Thanks
 
KPOM said:
Just unzip it to a folder and click on the Throttlestop icon. A dialog box will pop up. The "Set Multiplier" setting is about halfway down the box. Set that to its maximum setting (32, which will display as "Turbo").
Click to expand...

I just wasn't sure if there was anything beyond that like a button I need to click to save or turn on is all.

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Also, wasn't sure what the persistence was for each method.
 
Keep in mind that ThrottleStop 4.00 does not correctly support Ivy Bridge CPUs. If your CPU model number starts with a 3 then do not use ThrottleStop 4.00 or 4.10.

ThrottleStop 5.00 beta is identical to ThrottleStop 4.00 except that it correctly recognizes the new Ivy Bridge CPUs. Don't let the beta word scare you. ThrottleStop 4.00 and 4.10 have been used for months on Sandy Bridge CPUs without any complaints. When new CPUs arrive, old software needs to be updated. I released version 5.00 as a beta because during the summer I don't have time to work on this project.

ThrottleStop 5.00 should allow you to adjust the Turbo Power Limits for your CPU as well. Apple was nice enough not to lock this feature like some PC manufacturers have been doing. Can someone post a screen shot of the window that pops up when you click on the TPL button? Does increasing these limits get you a higher Turbo Boost multiplier when fully loaded? Try doing some testing with wPrime.
 
unclewebb said:
ThrottleStop 5.00 should allow you to adjust the Turbo Power Limits for your CPU as well. Apple was nice enough not to lock this feature like some PC manufacturers have been doing. Can someone post a screen shot of the window that pops up when you click on the TPL button?
Click to expand...

Do you mean the TRL button? Also, how do you do a screenshot in Windows on a MBA?
 
Okay using Throttlestop 5 (beta3) from Tech Inferno and setting the Multiplier to 32/Turbo I get these Windows Experience rating figures ("normal" figures in brackets:

CPU 7.1 (6.4)
RAM 7.5 (7.2)
Graphics 6.4 (5.9)
Gaming Graphics 6.5 (5.3)
Primary Disk 7.9 (7.9)

That's quite a difference! Was surprised to see even the RAM figure change a little.
 
The TRL button should show you the Turbo Ratio Limits or the Turbo multipliers available for your CPU.

The TPL button should open up a Turbo Power Limits window which will show you how much time and how many watts your CPU can use before maximum Turbo Boost is reduced.

On a PC I use the Print Screen button on the keyboard. Not sure what you can use on a Mac to get a screen shot.

Just tell me what numbers are in that window if you can't post a screen shot then try increasing them and see what happens to your WEI scores.

Most CPUs have a fixed maximum value set by Intel at the factory. Unfortunately I don't have access to this data at the moment so these values are wide open in ThrottleStop.
 
Here are my results (Windows 8 CP x64):

Geekbench 2.3.4
Before: 4367
After: 5764

WEI
Bef. -> Aft.
6.4 -> 7.1
7.2 -> 7.5
5.7 -> 5.7
6.3 -> 6.3
8.1 -> 8.1

I'd be interested to see what other peoples' Geekbench scores are.
 
Last edited:
oxfordguy said:
Is there a way to get this to run automatically on starting Windows, or at least to save settings, so you don't have to reset the multiplier each time? Thanks
Click to expand...

Not that I know of, but I can look. Unfortunately, I don't think Windows 7 has an automated script routine like OS X.

oxfordguy said:
Okay using Throttlestop 5 (beta3) from Tech Inferno and setting the Multiplier to 32/Turbo I get these Windows Experience rating figures ("normal" figures in brackets:

CPU 7.1 (6.4)
RAM 7.5 (7.2)
Graphics 6.4 (5.9)
Gaming Graphics 6.5 (5.3)
Primary Disk 7.9 (7.9)

That's quite a difference! Was surprised to see even the RAM figure change a little.
Click to expand...

Those are pretty consistent with my 11" i7, except that I was getting graphics scores of 6.5 both with and without Throttlestop, and was getting 6.3 on the processor before. I also noticed the bump in the RAM score (perhaps since it is able to access it at 1600MHz instead of being limited by the processor.
 
unclewebb said:
The TRL button should show you the Turbo Ratio Limits or the Turbo multipliers available for your CPU.

The TPL button should open up a Turbo Power Limits window which will show you how much time and how many watts your CPU can use before maximum Turbo Boost is reduced.

On a PC I use the Print Screen button on the keyboard. Not sure what you can use on a Mac to get a screen shot.

Just tell me what numbers are in that window if you can't post a screen shot then try increasing them and see what happens to your WEI scores.
Click to expand...

With Turbo Boost enabled its says:
Package Power Limit: 25 (for both Limit 1 and Limit 2)
Turbo Limit time(S): 28 and 0
Package Current Limit(A): 112

The "Lock" checkboxes are unchecked

Is this what you mean? Are these the correct values to use?


unclewebb said:
Most CPUs have a fixed maximum value set by Intel at the factory. Unfortunately I don't have access to this data at the moment so these values are wide open in ThrottleStop.
Click to expand...

Is this potentially dangerous?
 
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