Things to try ~CPU overheating JM/JS/JZ models~

[dblkk]

To start, I've had 3 G750 JM models I bought all from Best Buy, after a problem with one i returned it to get another, 3 times. Each one benchmarked/stress tested fine when I first got it. But within a few days, while rendering, temps started to hit high 90's, and thermally throttled. A few days after that, even stress tests would lead to 100c temp and throttling on 1-3 cores as high as 25%.

I then returned the last JM model, and figured this time I would try a different retailer and a different model of the G750 and try my luck that way. So went to amazon, bought a JS model. First thing/s i did, was render, stress test, just threw everything i could at it. Temps were still quite high, and again, within days temps were back 100c and thermal throttling.

I have 3 weeks ago, filed with amazon and recieved a replacement JS model. Which i updated a few things, stress tested, updated a few more, then stress tested, updated more, stress test. Over and over, keeping an eye on thermals every update, to see if there or what there was that was causing high temperatures to turn into extreme temps. after updates things were still the same thermally, and I did rendering. Hitting around 90c I thought i was good. 90c is still high, but 10c away from throttling.

Well, about about a week ago, those 90c temps were now 95-98c, and stress testing also proves those numbers. Gaming also yields me 85-90c cpu temps.




Working with Hmscott on these forums, I think we've found a way to lower thermals, and not sacrifice turbo boost.

1.First thing to do is make sure you have hwinfo (or something close but its the best), and intels extreme tuning utility.

2.Then in XTU 'down volt' lowering both dynamic and cache voltage offset by -50.78. If you can get lower without wierd CPU respone or just a freeze needing a reboot then great.

(anything lower makes my cpu % go from 99% to like 85%, doesn't crash but not good, but try with yours).

3. Final and biggest difference making step. Drop the core multiplier for 3 and 4 active cores from 32x to 30x.

(I dropped the core multiplier for 3 and 4 active cores from 32x to 31x. This led to me 95c-99c with spiked to 100c and throttling up to 5%. This was better than 32x, but still throttling. Dropping multiplier to 30x, gives me 86-94c, and spiking as high as 95c. So most extreme loads, below throttling with some room to spare.)



**Differences in reducing the multiplier. Max turbo speed 3.4. At stock, highest I get is 3.29. Drop multiplier from 32x to 31x, yields me 3.09ghz. Dropping to 30x (which yields highest multiplier with no throttling), 2.99ghz.

Alot of people try or recomend going into power management and putting cpu at 99% instead of 100% which disables turbo altogether. But that leaves chip alone at 2.4ghz. My way, thanks to following all Hmscotts advice, at least gets you to 3.0ghz and good temps.

**I will be using these from now on, if anything happens or anything needs to be changed, I will update this original post, Date/time stamp it as well.

But so far, stress tested several times on several programs and a very quick dvd render and no problems. I'll be trying a 3d scene out on tuesday once i get back to work.

If your having problems thermally, please try this and report back anything. I'll post pictures of xtu to give better visials for those not technically inclined.

[hmscott]

dblkk wrote:
...

3. Final and biggest difference making step. Drop the core multiplier for 3 and 4 active cores from 32x to 30x.

,,,

dblkk, so in essence, Core 1 and 2 remain at stock multiplier, which lets single threaded apps and a 2nd background app to run at full Turbo of 3.4ghz, and the reduced multiplier for reduced Turbo of 3.0ghz only kicks in for Core 3 and 4, and only when you have a 3rd and 4th program thread running.

And, that reduces the heat for your JS so that you don't thermal throttle, even for 100% load for 4-8 threads?

That's a huge improvement, and gets the most performance out of a borderline CPU thermal situation 🙂

There have been quite a few people with the JM/JS, and maybe some JZ's that could benefit from these settings, or a variation on them. Maybe some won't need to drop down to 30x multi, and can run without thermal throttling on 31x - only way to find out is to try it 🙂

Thanks dblkk!

[dblkk]

hmscott wrote:
dblkk, so in essence, Core 1 and 2 remain at stock multiplier, which lets single threaded apps and a 2nd background app to run at full Turbo of 3.4ghz, and the reduced multiplier for reduced Turbo of 3.0ghz only kicks in for Core 3 and 4, and only when you have a 3rd and 4th program thread running.

And, that reduces the heat for your JS so that you don't thermal throttle, even for 100% load for 4-8 threads?

That's a huge improvement, and gets the most performance out of a borderline CPU thermal situation 🙂

There have been quite a few people with the JM/JS, and maybe some JZ's that could benefit from these settings, or a variation on them. Maybe some won't need to drop down to 30x multi, and can run without thermal throttling on 31x, 32x, 33x - only way to find out is to try it 🙂

Thanks dblkk!

Yes, very good note. As for 1 and 2 core, those loads aren't whole core stressing, and stressing after changing just those doesn't effect temperatures at all.

As for dropping multiplier for 3 and 4 cores to 31x, I should've noted that's a possibility, but I did note that when I tried it wasn't a acceptable outcome/difference. But thanks for adding that in.

For 100% load, on any stress test ive thrown at it, highest temperature 'spikes' ive gotten has been 95c. Normally around 90-92c, which is roughly 10c less than before and below any throttling level.

The stock levels for 3 and 4 cores is 32x, if you went up to 33x that would be overclocking the chip. With my experience and from what I've read, there have only been a handful of good stock temp JS models, and I don't see overclocking in most of our futures, laugh.

I don't forsee any reason for me to have to RMA my laptop, but the whole 1 year accidental is whats keeping me from opening this sucker up to repaste. But if/when I do, I will make sure and include as much information on that experience as well. I will also include a video (probably loaded to youtube) on that as well.

[hmscott]

dblkk wrote:
Yes, very good note. As for 1 and 2 core, those loads aren't whole core stressing, and stressing after changing just those doesn't effect temperatures at all.
As for dropping multiplier for 3 and 4 cores to 31x, I should've noted that's a possibility, but I did note that when I tried it wasn't a acceptable outcome/difference. But thanks for adding that in.
For 100% load, on any stress test ive thrown at it, highest temperature 'spikes' ive gotten has been 95c. Normally around 90-92c, which is roughly 10c less than before and below any throttling level.
The stock levels for 3 and 4 cores is 32x, if you went up to 33x that would be overclocking the chip. With my experience and from what I've read, there have only been a handful of good stock temp JS models, and I don't see overclocking in most of our futures, laugh.
I don't forsee any reason for me to have to RMA my laptop, but the whole 1 year accidental is whats keeping me from opening this sucker up to repaste. But if/when I do, I will make sure and include as much information on that experience as well. I will also include a video (probably loaded to youtube) on that as well.

dblkk, I corrected the multi's, thanks 🙂

Did you register for the accidental coverage? Most people don't know you have to register for that within 90 days of purchase. You do that here:

Asus Accidental Damage Protection (ADP) at a Glance
http://notebookcare.asus.com/Content/US/ADP/ADP.aspx

Extended Warranty Service Package Activation
http://vip.asus.com

You found a workaround that you can use to prove to Asus that the uncorrected performance is unacceptable. You proved that the CPU is thermal throttling at stock settings, and you had to reduce the speed/performance of the CPU to get it to stop thermal throttling 🙂

You should send it in for repair, this workaround is on the edge of needing repair - and could get worse - it might not be the paste, it might be a physical problem with the cooling system - a bad heat pipe, bad connection, etc - that could get worse with a physical bump. I wouldn't let it go for long without repair.

But, at least you have a workaround so you can put together an alternative to use while the G750 is away for repair 🙂

[dblkk]

Thanks, I wasn't saying your muilti's were wrong, I was just stating with our new ones I don't forsee an overclock.

I haven't registered, and just tried, got an error both times, so will try again tom and if it doesn't work ill email. So very very thanks for heads up, only thing I really care about on this warrenty.

Af for sending in for repair, I have seen and had this same exact 'problem' on every single laptop now, between two different models, and at two differenet retailers, I really think its just the way things are for me. I doubt the laptop itself is broken, as that's a very very bad % of bad luck.

[hmscott]

dblkk wrote:
Thanks, I wasn't saying your muilti's were wrong, I was just stating with our new ones I don't forsee an overclock.

I haven't registered, and just tried, got an error both times, so will try again tom and if it doesn't work ill email. So very very thanks for heads up, only thing I really care about on this warrenty.

Af for sending in for repair, I have seen and had this same exact 'problem' on every single laptop now, between two different models, and at two differenet retailers, I really think its just the way things are for me. I doubt the laptop itself is broken, as that's a very very bad % of bad luck.

dblkk, fair enough, it is too bad you are seeing those temps though. I don't understand it myself, as before the G750 didn't go into thermal throttling at all, and I still don't think it should. It was the actual test we used here to decide whether to return or send in for RMA.

You may have just had the bad luck of the draw, it isn't a good percentage for you personally, but you are only a sample of one 🙂

I would still report it to Asus, and see what they say, Asus may have figured out a solution by now for production problems early on. So it makes sense to at least give them a chance to fix it for you. I am sure they would appreciate feedback to let them know their cooling system isn't doing a good enough job for you!

There was a guy that complained about lines in his display for months, like 8+ months, replaced his screen 3 times, and never sent in his laptop to Asus to get it fixed. While during the same time several other people did send theirs in, like some have done recently, and they got back laptops with no lines in the display... we often become our own worst road blocks in life - it is up to you to decide what you want and ask politely for it, don't give up! 🙂

I guess I am not ready to give up on Asus, and assume this is the way it is, because it shouldn't and hasn't been.

Enjoy!

[thewyrmking95]

Hi all i just created a screen shot of XTU to help the non-tech savvy and it doesn't seem to let me attach the file? i'm new to the forum so... call me a newb haha

Edit: it is a screenshot after having changed the values 🙂

[hmscott]

thewyrmking95 wrote:
Hi all i just created a screen shot of XTU to help the non-tech savvy and it doesn't seem to let me attach the file? i'm new to the forum so... call me a newb haha
Edit: it is a screenshot after having changed the values 🙂

thewyrmking95, what does it say? You don't actually want to do an attachment, you want to insert an image. There is a little pict icon next to a movie frame icon - click on the image icon, click on From Computer, then click on select file, then pick your image, and it inserts it where the cursor was.

You will get the hang of it 🙂

There are more complex image management tools, like it keeps track of your library of uploaded images, so you can click on Advanced (ir a Avanzado) and Manage Attachments (yeah, it includes images), and then you get a dialog with all your uploaded stuff that you can click and drag down on to an insert bar... TMI 😉

Have fun!

There might be a limitation of 5 posts before you can insert an image...come back on your 6th post 🙂

[dblkk]

hmscott wrote:
dblkk, fair enough, it is too bad you are seeing those temps though. I don't understand it myself, as before the G750 didn't go into thermal throttling at all, and I still don't think it should. It was the actual test we used here to decide whether to return or send in for RMA.

You may have just had the bad luck of the draw, it isn't a good percentage for you personally, but you are only a sample of one 🙂

I would still report it to Asus, and see what they say, Asus may have figured out a solution by now for production problems early on. So it makes sense to at least give them a chance to fix it for you. I am sure they would appreciate feedback to let them know their cooling system isn't doing a good enough job for you!

There was a guy that complained about lines in his display for months, like 8+ months, replaced his screen 3 times, and never sent in his laptop to Asus to get it fixed. While during the same time several other people did send theirs in, like some have done recently, and they got back laptops with no lines in the display... we often become our own worst road blocks in life - it is up to you to decide what you want and ask politely for it, don't give up! 🙂

I guess I am not ready to give up on Asus, and assume this is the way it is, because it shouldn't and hasn't been.

Enjoy!

I understand this, but I know I received from two separate shipments of JM from best buy. And amazon order the second time around/replacement I had made shipped from a separate warehouse (aka calafornia vs Kentucky) just to make sure it wasn't just a bad batch.

I will/should contact Asus about this, but theyre just going to at best tell me to ship it in. I have my wedding july 26th, and this laptop will be the mvp of the wedding. And until then im using it to make a few wedding videos (which means editing videos and pictures) as during the reception I will be plugging the laptop into a projector and built in speaker system. So the laptop will be running the videos during the reception, as well as have all the songs/playlists for the music as well. I edit videos on the side, so wanted to make sure my wedding video of the wife and I that will be shown was perfect. And I didn't see the need in paying $1000 for a dj, when (wifes latina) we would have to give him half the music she wants and were using the reception halls speakers and not allowed to bring in your own. So I figured, $1000 towards a dj, or $1000 towards 2x1tb ssd drives. **the ssd's won**

But probably after the wedding I will be contacting asus. I feel its just cheap thermal paste, as with pc's I have seen even the top 10 thermal pastes vary 10c easily. Im sure Asus is using good thermal paste, but probably not the top stuff. Repaste will fix this thermal problem, im almost certain.

[thewyrmking95]

I was having this issue also, yes and i just wanted to help others haha 😛 and i'm at my college right now but i will oc core 1 and core 2 when i get home.