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ATTENTION: G73/G74/53SW/SX Owners - CPU Throttling to 798mhz and how to fix it

dkillone
Level 9
EDIT: This affects ALL G Series owners that have a sandybridge cpu(G73SW/G74SX/G53SW/G53SX), there is NO exceptions until Asus releases an update, not all games will cause cpu throttling, but so far I am comfirming more and more games that induce it.

EDIT 2: There is also a more permanent fix now as well, but its Unofficial and requires you to flash your bios. CLICK HERE to find out more,

I initially noticed this when I first got my G73SW-XA1 back in mid march, 2011. but didn't think anything of it until a poster had brought this up as some HP owners noticed that their Envy 17 SB is doing this to them. Edit: Which HP fixed their throttling problem on May 29th, 2011.

Problem is when running Prime95 the CPU stays turbo boosted at 2.3 to 2.6ghz. However, once Furmark is started at the same time, the CPU drops instantly to 798mhz. This now also can be noticed in GTA4,SC2,L4D2,WoW and anything that will put high loads on CPU + GPU at the same time. It does NOT just happen during synthetic test.


The FIX

So how to fix it? Well so far it seems running ThrottleStop in monitor only mode stops any, and all throttling. You do not have to mess with any settings, simply extract and run the exe for it to work. If you would like to have it run on bootup, simply create a shortcut, and drop it into your start-up folder. To have it auto-close, go into the ThrottleStop.ini and change "DCExitTime=0" to any number you like(basically just means number of seconds before it closes, I have mine set to 5.)

Throttlestop 4.00:
http://www.techinferno.com/downloads/?did=9


or for more detailed information about TS:
http://forum.notebookreview.com/hardware-components-aftermarket-upgrades/531329-throttlestop-guide.h...


There is no known downsides to using throttlestop, your CPU will still down-clock properly when not in use, and it does not run hotter, nor have I found any conflicts with battery draining faster.

Also, you do NOT have to worry about any overheating, even with throttling disabled I see no higher than a peak 81c on my CPU/GPU in a ambient room temp of 84-86f. So you really don't need to worry about that. However, the PSU does get hotter when throttling is disabled when there is significant load on CPU + GPU. So just watch for that, though it should be ok for the most part.

More Permanent Fix
This fix is 100% unofficial, and will require you to flash the BIOS. Which can be done with EasyFlash from within the BIOS menu. This is still done at your OWN RISK, so I am NOT responsible for any laptops not working after flashing.(However as a side note, flashing the bios is a fairly safe thing to do, especially when using the built in flasher Asus already provides.)
*Warning, this also might put more strain on your battery when running on battery only, But I've yet so see any difference during my test. Just beware of the possibility, I am in no way responsible for any damages done.


What this fix does is disable Bi Directional PROCHOT within the bios, so there will be no need to run Throttlestop on bootup anymore. I've been using this bios for quite some time, and I have had no problems, so the risk should be minimal. Also, as a bonus, this bios also enables AES(Learn More) that Asus so kindly forgot to implement into our original bios. The download link is below and the instructions for flashing will be below that.

Download: G53SW_AES_Throttle-Fix.zip
Download:
G73SW_AES_Throttle-Fix.zip
Download: G74SX_AES_Throttle-Fix.zip (thanks to AbbyY)


Instructions:


Step 1: Download the file above, extract the 2 files onto a flash drive. Leave the flash drive plugged in.

Step 2: Reboot the computer, and press and hold F2 to get into the bios. Go to Advanced tab, then Start EASY FLASH.

Step 3: You should see the 2 extracted files once into easy flash. Using arrow keys, choose the one with _TFIX(_ORIG is for if you want to go back to default bios). Then hit enter and Yes to update. Let it do its thing, (it will shutdown, but just turn it back on after it shuts down).

Step 4: Once your back into windows, to test for success, download this MSR Tool and type in 0x1fc in the MSR Number box, then click Read MSR. Under the EAX box, you should see "0x0004005E", E being the key here that BD-PROCHOT is disabled(it will be F, it PROHOT is still enabled).

Step 5(optional): You can also test by running Prime95 + Furmark at the same time. Using RealTemp 3.67 to monitor cpu clocks. It should never fall below 1995mhz essentially, but for me, lowest I see it go is 22xxmhz.

--------------------------------------------------------------------------------------

Testing

If anyone else would like to test for themselves the programs to use for logging, stressing, etc are:

RealTemp 3.67(mainly to log to a txt file, but also it reads accurately the multi/cpu clocks of the CPU. Can be used for temperatures as well.)
http://majorgeeks.com/Real_Temp_d6098.html

PRIME95(good to get CPU to 100% load, but also checks for memory etc, very good for testing the computer stability)
http://majorgeeks.com/Prime95_d4363.html

Furmark 1.9.0(puts the graphic card at 99-100% load, again, just another good program to check for stability, of course, also just the programs I used to show consistent throttling.)
http://majorgeeks.com/FurMark_d4183.html


Also, if anyone gets some very interesting results, feel free to post in this thread, hopefully this will all lead to an official fix from Asus. We may have a temp fix for now, but always nice to hear official word and for an official update solving this problem. Thanks for reading!


Thread I created on NotebookReview Forums about it.

http://forum.notebookreview.com/asus-gaming-notebook-forum/576468-g73sw-cpu-throttling-prime95-furma...

Thread of this happening to HP Envy 17 owners.
http://forum.notebookreview.com/hp-envy-hdx/575817-hp-envy-17-sb-throttling-test.html

Confirmed Games that are affected by Throttling(click on the game to see throttling log of that game)

Video of throttling in GTA IV




NOTES I've gathered so far:


  • This is not a temperature problem, temps are perfectly well in range during test. However, Intel could be throttling for laptops that possibly would have high temperatures with both running.
  • This is not strictly from caused by nvidia as the HP Envy uses an ATI GPU, so this is either motherboard or strictly the CPU.
  • Using a higher watt PSU has no affect on throttling.
  • This could be a power draw issue, or a premature temperature throttling.
  • Using Throttlestop 3.00 stops the throttle, doesnt have to stay on, just be run once on boot.
  • HP released a BIOS update fixing the throttling problem for Envy 16 gen2 owners on May 29th, 2011.
  • Using realtemp 3.67 to log cpu during games has proven that throttling is happening outside of artificial test.
  • GTA4 is the most affected by throttling, frames are around 10-25, but instantly jump to 30+, once throttlestop is opened.
  • All G53/73SW models are affected by this throttling problem until Asus releases an update to fix it, most likely it will be a new bios.
  • Ken Lee from GenTechPC has been great help, no one at Asus was really responding to me. I asked if Ken could talk to them, and now he is working with Asus to produce a fix. 😆
  • This problem still persist on the new G74/53SX series
  • As of 11-22-11, still no sign that Asus cares to release a bios update fixing this issue(not even for their new G series). So I don't see the point in hoping they will fix it anymore.



Since all the links are dead, here is my dropbox backup, should have all the files in this post. Choose the one you need.
Dropbox Backup
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175 REPLIES 175

My CPU's Core Speed and Multiplier became sluggish and inconsistent out of nowhere earlier today. My Intel i7 Q720 is supposed to run at 1.6Ghz, but when I run basic programs (like Google Chrome, Steam, Microsoft Office) it falls to 930Mhz with a multiplier of 7.0.

I checked my power plan settings. When I switch from a lesser plan like Power4Gear Battery Saving to Power4Gear High Performance, the CPU speed shoots up ~2300Mhz (2.3Ghz) and the multiplier up to 20-21. However after 30 seconds it begins to falter, falling to 1700Mhz, then back up to 2000Mhz, then down to 1100Mhz, back up/down/up/down until the speed eventually settles back to 930Mhz after 1-2 minutes.

I did a lot of reading on Asus ROG forums and tried some solutions. I installed ThrottleStop, which resulted in the same phenomenon as switching power plans (the up/down/up/down fluctuation until settling back at 930Mhz).

I also downloaded the latest Bios update from the Asus website (213). Even though my bios is at the latest version, I tried reflashing it using Asus EZ Flash as per the forums suggestions. Flashing the bios seemed to have worked fine at first, but after about 10 minutes when I ran the same basic programs (Chrome, Steam) the CPU speed fell back to 930Mhz. I tried a second reflashing of the bios, no change.

Lastly, I think that my laptop thinks the CPU temperatures are much higher than they actually are. After less than 30 minutes of use, my laptop will shut down. While running, I monitor the CPU speed and temps with CPU-Z and ThrottleStop. They tell me the CPU is at 100 degrees celsius after running for only a few minutes, but the computer doesn't feel hot at all.

Is there a concrete permanent solution for these problems? Scouring various forum threads hasn't helped thus far.

DaemonXR
Level 10
Something really messy. You sure about this cpu Temp? How old is your G74SX? You sure that your heat sinks are not clogged with dust and debris?
Enlight me!

ASUS G74SX-TY249D 8GB DDR3 1333MHz 2XWD BlackScorpio 7200rpm 500GB

alifistiaque
Level 7
what is the model of the 3d glass of g53s series? is there any update to its ram?

getmealive
Level 7
warning!! my G74sx bricked after update to this Bios fix and when I tried to change some settings in Bios

scyth_e
Level 7
I wish to find permanent fix for g73jh but there is no as i know. 😞
Do u think i can use G73SW_AES_Throttle permanent fix for G73JH?
Probably stupid question.

scyth_e
Level 7
Hi, I have read in other forum this issue is relating to g73jh too. In this thread it isn't subscribed. It is true? If yes how can i test it?

Vulgar
Level 7
It seems Asus doesn't care about it's customers, why not release a new live updater that will work and update our computers? why are there no updated drivers for Windows 8 in the drivers download section of the main Asus site? why can't i use UEFI bios utility? why I have my notebook and I been treated like we were obsolete since the day I bought the thing? I want answers. Why did support completely drop off?

This fix seems to resolve problem with F1 2012

kb0sdq
Level 10
Question, my G73jh from bestbuy has the Clarksfeild processor is that affected also?

Thanks in advance,
Happy ROG_n
Doug

Another G74 survives a flash. AES enables and BD disabled. No more throttlestop for me! It cures the large FPS spilkes in WOW when raiding. Well worth the effort. If only we could oc 2630qm.... I'll be staying way clear of that cpu flex ratio setting!
G74sx-BBK7 i7 2630QM, BIOS mod. for AES-NI/BDprochot, 2gb 560M @ 866 core 1333 mem, 1080p matte, 16gb 1333 OEM Samsung Ram. Samsung 830 256gb Primary. (3Dmark11 2513/ WEI 7.2) Nexus 7 32 Gb- died & RMA'ed.