HP ProBook 650 G1 Laptop (i7-4712MQ) 100 degrees Celsius at full load

[hpprobook650g1]

Hello,

I bought an HP ProBook 650 G1 with a Core i7-4712MQ and Radeon HD 8750M.

Is it normal (is the laptop design this way) for the processor to reach 100 degrees Celsius at full load (all cores running at 100%) ?
For this processor the maximum temperature allowed at the processor die is 100 degrees.
so the CPU reaches the max allowed temperature.

I’ve heard that in the long run, because a laptop becomes less efficient at cooling, it might start overheating and throttling/shutting down at demanding tasks.

I ran the CPU at full load for 30 minutes and the laptop was completely stable, but very noisy and hot. The laptop was on a flat surface and the air vents were unobstructed. I didn’t use a laptop cooler.
At idle the CPU is at 43 degrees Celsius.
I used Aida64 and HWMonitor to get the temperatures - Windows 7 x64. The Ambient temperature was approx. 23 degrees C.
The temperatures in HWMonitor are per core i.e. Core #0, Core #1, etc.

I know that this is a powerful CPU and being inside a laptop (where the air flow is not great), and one with just one small fan is expected to heat up the machine a lot, but the CPU reaching its max allowed temperatures is not great.

I don’t know if there’s a problem with the cooling on my laptop, maybe the thermal paste on the CPU isn’t applied well.
I’m concerned that using the CPU at full load when running intensive workloads will reduce the lifespan of the laptop, and if the laptop isn’t cooling properly (i.e. according to the HP design), I’ll have to send it back to the store for reapplying of thermal paste. If reapplying thermal paste would lower the max temperature at full load even by few degrees, it would make a big difference.
If in time the laptop becomes less efficient at cooling it will be a big problem because the CPU might start overheating and shutting down.

My CPU specs:
http://ark.intel.com/products/78933/Intel-Core-i7-4712MQ-Processor-6M-Cache-up-to-3_30-GHz
CPU Specs: T JUNCTION = 100 Celsius (The Junction Temperature is the maximum temperature allowed at the processor die)

Please tell me if my laptop’s cooling is behaving correctly, according to the HP design specs.
Was this laptop model designed to reach 99 - 100 degrees Celsius at full load?

Examples - Temperatures values for 17 inch laptops:

Asus G750JH (dual fan system, i7-4700HQ, GTX 780M)

- at 100% CPU load the CPU temperature is 85 degrees C.

Asus G750JX (dual fan system, i7-4700HQ, GTX 770M)

- at 100% CPU load the CPU temperature is 87 degrees C.

Asus G750JW (dual fan system, i7-4700HQ, GTX 765M)

- at 100% CPU load the CPU temperature is 84-91 degrees C.

Asus G750JM (dual fan system, i7-4700HQ, GTX 860M)

- at 100% CPU load the CPU temperature is 93 degrees C (with GPU at 100% load).

Lenovo Y70 (dual fan system, i7-4710HQ, GTX 860M)

- at 100% CPU load the CPU temperature is 84 degrees C.

Examples - Temperatures values for 15 inch laptops:

Lenovo ThinkPad T540p-20BE005YGE (i7-4700MQ, GT 730M)

- at 100% CPU load the CPU temperature is 95 degrees C.

Lenovo ThinkPad W540 (i7-4700MQ, Quadro K1100M)

- at 100% CPU load the CPU temperature is 98 degrees C.

Dell Precision M4700 Mobile (i7-3720QM, Quadro K2000M)

- at 100% CPU load the CPU temperature is 97 degrees C.

Clevo W650SJ (I7-4700MQ, GTX 850M)

- at 100% CPU load the CPU temperature is 95 degrees C.

Dell XPS 15 (9530, Late 2013, i7-4702HQ, GT 750M)

- at 100% CPU load the CPU temperature is 99 degrees C.

Dell XPS 15 (4K UHD display, i7-4712 HQ , GT 750M)

- at 100% CPU load the CPU temperature is 95 degrees C.

Dell XPS 15 (i7-3612QM, GT 640M)

- at 100% CPU load the CPU temperature is 98 degrees C.

Toshiba Satellite L50-A-10Q (i7-4700MQ, GT 740M)

- at 100% CPU load the CPU temperature is 93 degrees C.

Examples - Temperatures values for 14 inch laptops (should get hotter than 15 inch laptops):

MSI-GE40-i760M2811 (i7-4702MQ, NVIDIA GeForce GTX 760M)

- at 100% CPU load the CPU temperature is 95-97 degrees C.

Razer Blade (i7-4702HQ, GTX 765M)

- at 100% CPU load the CPU temperature is 93 degrees C.


Have a nice day!

Sincerely,
Mircea Barbu

[Huffer]

100 is too hot. How old is it? You may want to consider disassembly, cleanout and new thermal compound. 

[hpprobook650g1]

Hello,

The laptop is new. It is very clean, free of dust.

After reapplying the thermal paste what should be the value of the max temperature of the CPU, at 100% load for this laptop model?

[hpprobook650g1]

Does anyone from HP know what's the maximum temperature this laptop model was designed to reach at full load (at regular room temperature: 20-23 degrees Celsius)?

[Huffer]

The laptop is at least a couple years old with a 4th gen Intel Core processor. Have you already opened it and looked inside?

Anything over about 80-85 C is too hot and ultimately destructive. 

[hpprobook650g1]

Hello,

The laptop is new, it wasn't used. The laptop model is a couple of years old, but in Romania the stores sometimes still have some older models for selling.

Thank you for your replies, but I was interested, if possible in a (somewhat) precise value for the maximum temperature this laptop model was designed to reach at full load at regular room temperature. This is important for the store tech people who would reapply thermal paste to the CPU. They should know a precise value for max temperature  with a small temperature interval around that value, and shoot for that.

I looked at reviews to find out for other laptops with similar CPUs what was their max temperature at full load, and the values vary a little, depending on laptop size and nr. of fans. I didn't find reviews for HP Probooks (with the same chassis as my laptop) with quad core CPUs, so I don't know the max temperatures that other users have with similar hardware.

Isn't 80-85 C too low, for this CPU and for this laptop? It only has a fan.  I was thinking that the max expected temperature at full load for my laptop should be in a value region around 90 degrees C.

Does HP have in  their technical specs detailed info that includes the max temperature at full load for this laptop model?

Please give me this detailed info, if you have it. It would help me and the people reapplying the thermal paste to know how successful the process of reapplying the paste was in comparison with an expected value.

Thank you very much.

[hpprobook650g1]

I just found a review for an HP Probook 450 G1 (i7-4702MQ, integrated Intel HD Graphics 4600) with a quad core CPU and a chassis that are very similar to those of my laptop.

https://www.notebookcheck.net/HP-ProBook-650-H5G81ET-Notebook-Review-Update.117797.0.html

The max temperature at full load was 77 degrees C, which is surprisingly low.

[Huffer · Accepted solution]

We are not HP Engineers here. The best information there is comes from the Service Manual which only specifies an operating range for ambient air temerature and then temperature ranges for the hard drives and battery. 

Service manual

Detailed specs

Its kind of quaint to think the technicians can "shoot for" a certain temperature by the way thermal compound is applied. 

You apply it properly (thin even coat just on the core) and hope for the best...there is no fine adjustment. I have also disassembled a lot of laptops and am surprised that thermal compound application at the factory is sometimes sloppy. Too much is just as bad as too little.

You can also enhance cooling by getting the surfaces as shiny as possible. Some gaming laptop modifiers even polish the heatsink and processor core surfaces before applying thermal compound or use copper shims for maximum efficiency. 

You will find lots of opinions about the maximum core temperature that should be tolerated in a laptop and the answer is not really brand dependent. No reason an Asus or a Lenovo with the same CPU has a different temperature tolerance than an HP. 80 to 85 max is my own estimate; some people say 90, but you won't find too many who suggest 100 is tolerable in the long run. 

[hpprobook650g1]

Yes, I know about the thermal paste, but I was thinking that when you design a laptop with a certain chassis and CPU, GPU, and other components placed in a certain position you design the cooling solution so that the max temperature is around a specific value, that doesn’t exceed the individual components’ max allowed temperatures. And you also set your goals for max money spent on cooling and your goals for case surface heat and noise and components' lifespan.

That's why I was asking for a somewat precise value for the maximum temperature.

I was thinking the HP hardware designers maybe would have more complete specs, but obviously I didn’t know if someone at this forum would have the specs or could give them to me. But I tried and asked for them.

From what I understand you had more experience with the hardware insinde laptops and the temperatures experienced by CPUs under heavy load.

Your answer about the 80-85/ 90 degrees Ceslius is very helpuf, along with the latest review I have found that show these results for the max temperatures at full loat for similar hardware, because there's a significant distance from these values to 100 degrees C. Plus 100 degrees C is the max allowed temperature for the CPU.

Thank you Huffer for your help.
Have a nice day!