cancel
Showing results for 
Search instead for 
Did you mean: 

G73JH GPU Overheating Observations and Suggestions (Read This First)

Chastity
Level 10
It's been 4 months since I've repasted my G73JH, which is how old my lappy was when it started to have thermal issues. Actually it was 3 months, and I lived with it for a month before actually fixing it. 🙂

From reading this forum during the last four months, I've gotten quite a bit of feedback on people's various repastes, with different levels of success, and a few failures resulting in RMA's. Most involving the damn keyboard removal. So I decided to write up a summary of what we've learned, so people can read this first and then ask questions if they are not answered here.

On Temperatures

This section addresses these questions:

"Are my temps good, or do I need to repaste?"
"When should I consider a repaste?"
"Asus says that the chip is designed to operate up to 114C, so my 102C load temp is ok, right?"
"My laptop is idling at 62C. Is this OK?"


According to AMD, the 5870M can operate safely up to 114C before requiring a thermal shutdown, and our BIOS is designed to do just that. However, I believe that we should operate well below this to allow for headroom. And Asus knows this as well, since new G73's operate at about 80-85C on load, and about 54C idle. Unfortunately, the thermal paste they use, and sometimes a loose mounting screw for the heatsink makes this worse, will dry out over the course of 1-3 months. During this period, you will see a slow rise in operating temperatures. Dust accumulation and smoking will help clog the heat vents making this a faster transition.

Then you will see people with idle temps in the 60-70C range, and load temps at 100C+. Despite the official statement about 114C, this is not a good scenario. Why? Because your heatsink and cooling system is operating subpar to what it is capable of, and it will only get worse if allowed to continue.

So as a guideline, I suggest the warning temps should be:

64C+ idle temps
98C+ load temps


If you are seeing temps in this neighborhood or higher, you are due for a repaste of the GPU.

Since I haven't done a Furmark in awhile, I did a 1 hour run:

1-hr Furmark Run

As you can see:

1) The vBIOS is updated to the current beta.
2) Operating temps are still quite low, even 4 months later. Ambient temps are reported at 23C. She's currently idling at 49C.
3) On 211, the fan ramps up when she hits 77C on core, and turns down at 76, which is why she hovers at this point.

After repasting with ICD7 four months ago, I've had no degradation of thermal cooling performance. This is what our G73 cooling system is capable of, so why should you settle for subpar performance?

On Thermal Pastes

"Which thermal paste is best?"
"What should I repaste with?"


There are many on the market, and every forum has their favorites. But we should consider what physical properties would most benefit our G73's. Since our heatsinks' contact surface is not the greatest, and the potential for a loose mount screw exists, we should consider using a paste with a higher viscosity. (thicker and heavier vs light and thin)

Why? A thicker grease will be more forgiving when surfaces aren't 100% flat and operate better should the mounts loosen slightly. In my opinion, Arctic Silver 5 is too low in viscosity for our purposes. When I repasted, I had 2 tubes of AS5 on hand, and I still went out and bought a tube of ICD7, because of that very same reason. And seeing how complicated opening up our chassis is, I didn't want to have to do it again.

So along these lines, here's a short list of various pastes I would recommend in no particular order:

1) IC Diamond 7
2) Arctic MX-2
3) OCZ Freeze

I recommend using the small pea-sized drop method, since that should minimize air capture, and insures the center of the chip is properly coated. Pastes like ICD7 still work optimally if you put too much, as the excess will just pour over the edges. They are also non-conductive.

On Doing The Repaste

"Should I do it myself, or should I have a tech do it?"
"Where can I get my service done?"


Only you can answer this question whether to do it yourself. It takes about 2-3 hours following the BTOTech Disassembly video. If you take your time, and be gentle, you can succeed. (I did!) I recommend using an edge to take the tape off from the back of the keyboard, like maybe a small ice scraper.

If you are not comfortable doing the disassembly, then either get a friend who is better at it, or hire a tech. Asus lists their ASP Partners for doing warranty service, so they should be able to do the job. You may even get it done for free if you can get Asus to give you a RMA #. This is best since you do not need mail it to Asus and wait a month, plus you can specify what paste you want used, and can inspect it before taking it home.

On Maintenance

If you notice your fans are working harder than usual, check the outtake vents on the back, and make sure they aren't getting clogged with dust and cigarette ashes. You can blow them out with compressed air as a quick fix, tho the best way to clean them out is to lift off the top of the casing and keyboard. Don't use a vacuum unless it's meant to be used on a PC. Household units can create static charges, which are bad for laptops.

Also, a laptop cooler is not needed if your G73 is cooling properly. My 1-hr run listed above used no laptop cooler, and the underside was not opened.

I hope this guide helps you make an informed decision about maintaining a properly cooled G73.

- Chastity

[SIGPIC]Kicking Ass Since Today[/SIGPIC]
95,489 Views
80 REPLIES 80

Retired
Not applicable
awesome post thanks chasity!

Retired
Not applicable
i am not 100% sure my laptop is over heating my idle temp on my CPU is around 60 and my GPU temp is 80 at idle which seams high. when i got the computer it idled around 40 and i just installed a GPU temp reader so idk what it was before. also in graphics intence games like borderlands, L4D 2 and just cause 2 it will shut down after about 10 mins of play but i can play TF2 and COD MW2 and black ops for hours with no problem. i just updated my BIOS so im not sure whats going on here. please help me

Retired
Not applicable
i might have just found my problem, i put the computer in sleep mode then i blew into the rear fans and when i turned it back on it looked like smoke was coming out of them because of all of the dust, i repeated a few times and my temps are now much lower GPU went back to 66 and CPU is not at around 52. when i get home for x mas break i have to get some compressed air in there

Linkku
Level 7
It should be noted that this trhead is the author's own views on the subject. There area lot of opinions on this topic. Several efficient notebooks (gaming laptops) GPU temperatures idle around 85°C - 93°C when under load.

Retired
Not applicable
will, when you clean out your heatsinks, first do it when the computer is turned off, and do you want to take off the bottom panels and blow the dust OUT of the rear vents. if you blow into the rear vents, the dust will just get pushed back into the fans or somewhere else inside the notebook. yes it could work this way but its not recommended.

Retired
Not applicable
Forgive me for being obtuse. What tool are you using to monitor the temperature? I have ProcessExplorer and know how to use the Task Manager but neither of them show temp as far as I can see.

tia... Bob

Retired
Not applicable
msgBldr wrote:
Forgive me for being obtuse. What tool are you using to monitor the temperature? I have ProcessExplorer and know how to use the Task Manager but neither of them show temp as far as I can see.

tia... Bob


HWiNFO32 is one you can use.

Retired
Not applicable
Brian@ASUS wrote:
... and blow the dust OUT of the rear vents. ...


how should I blow the dust out?

Sorry for that stupid question 😛

Chastity
Level 10
There are several you can use:

GPU Observer Gadget for simple temp readings
HWINFO32 for more complete system info
AMD GPU Tool for HD5870 allows for monitoring and logging
GPU-Z does this as well

All of these are also free. 😄
[SIGPIC]Kicking Ass Since Today[/SIGPIC]