Does GT73VR CPU run hotter with GTx 1080?

Ok so I’m new here and been wanting to ask if this is normal but few months ago I bought a new GT73VR-427 (Gtx 1070) w/ i7 7820 and this month I bought a Refurbished GT73VR-425 (Gtx 1080).

Did clean install to both and have Dragon Center. Anyways I noticed the Gt73vr-425 CPU temp was higher at idle and reaching higher temps way faster when gaming than the whole time I’ve had the 427. Idle temps was 38C on 425 and 31C on 427 and when I ran a small benchmark using same settings for Rainbow Six Seige (since that game for some reason is very CPU heavy) the temps were drastically different where the 427 temps were reaching 55-59 and the 425 temps were 68-71, to me that’s a drastic difference. Gpu temp was higher too but I know it should be since it’s a better Gpu .

I’m just wondering if this is normal, or did I get lucky with the stock paste of the 427. I still don’t know what paste this 425 has since I haven’t opened up the back since I just got it and it’s refurbished. Any responses is appreciated.

 

Bad repaste quality on the refurbished one. Keep in mind that's refurbished. Could be using old worn out thermal paste pad stamp, while the new one was still fresh.
Those pads don't last forever. Look at @GENOCID 's system, he was getting 99C temps in Cinebench r15.

The best way to solve the temp problems is to take some responsibility and do it yourself for cheap, rather than spending $50+ shipping+3 weeks to send it to MSI.
Fixing it is easy.

1) Buy Noctua NT-H1 thermal paste. Phobya Nanogrease extreme works well too.
2) buy 0.5mm thermal pads for replacing stock CPU pads. I prefer Arctic 0.5mm pads because you can get a 145x145 giant square of them. Might as well grab some 1mm pads also since they're cheap. Might be useful someday. I prefer 0.5mm pads rather than 1mm.

3) read some GT73VR repaste videos on youtube. There are quite a few.
4) always unplug battery connector AND AC power before opening the laptop. This laptop is very easy to repaste. It is actually HARDER to repaste my Radeon R9 290x video card than my laptop because of the small screws and difficulty dealing with opening the case, removing the PCIE connectors, videocard, all that crap, then disassembling, repasting and reassembling. Yes--it's EASIER to repaste the GT73VR than a desktop video card!

Some easy to follow repastes guides:


(this is for liquid metal, but you aren't using liquid metal. still educational).

Here's a Korean one in English.

These should be enough for you to do your own easy repaste.
See it's not hard at all.

Just use proper anti-static precautions.
Use "Criss-cross" method with partial screw turns when re-assembling heatsink, diagonal screws slowly.
Three methods to applying thermal paste: X method (two diagonal lines across silicon), Dot method (2 grains of rice sized in the middle), and spread fully and evenly. You will have to experiment on what gives you the best temps.

I prefer 0.5mm instead of 1mm thermal pads because that lessens resistance of the VRM/chokes elevating pressure and causing less pressure on 2 cores of the CPU--this may improve temps by a few degrees C.

 

Thanks for the reply and info/instructions on what to do and improve on this situation. I was thinking that might have been an issue what you stated and seems you are most probably right. I will definitely do this and even though it will be my first time, can’t wait to try it out to get those sweet low temps and start using my new Gpu to its potential. Thanks again man

 

Well worth doing it yourself, you'll save a lot of money in the long run. Your first time doing it is always daunting, but your laptop is pretty easy compared to a lot of Dell/HP/Acers which need to be almost entirely disassembled. Good luck.

 

So I repasted cpu and idle temps are better but it varies a lot when playing rainbow six, lol might try a different paste like kryonaut.

One thing I noticed though is the GpU is throttling at around 70c when I’m playing Witcher 3 as it’s using 99% usage and drops to around 19-20% usage for a few seconds before going back. Is this normal? I’ve been looking up and reading a lot lately, posts from here and other places and it doesn’t seem to be “thermal throttling”, I might be mistaken ( sorry am a total noob to this stuff and am trying to learn as much as I can.) if that’s not the problem, then what is causing that? Do I need to repaste GPu too? Just wondering if it’s normal or not. Thanks again in advance

 

TDP throttling most likely. Use GPU-Z and look under percap reason. Or enable Power Limit monitoring in MSI Afterburner.

 

So I’m an idiot...lol. I got the Gpu-Z program and was looking at perfcap reason and it was always at VRel and then go to idle which I thought was super weird, well after trying to find out the reason it would drop the GPU usage and messing around in Witcher 3 for awhile. I figured out it drops to idle when I press start to bring up the Map/Inventory menu, lol. Just glad it isn’t throttling like I thought and am sure that might be how the game is designed. It stays on idle as long as I am in that inventory/map screen the whole time.

Thanks for the reply and helpful suggestion. Really appreciate it, still gonna be lurking this site as I feel like there is so much to learn about my Computer that I never knew before.

 

VREL means that the core cannot boost clocks anymore because of voltage reliability limit. This will not cause stuttering or lag.
PWR means the core is being throttled because TDP has been exceeded (hitting the power limit too much can cause microstutters).
UTIL means utilization-GPU is not being fully utilized-means nothing. I believe this was changed to "Idle" in later versions of GPU-Z for idle, and "empty" (nothing) for normal utilization.

 

Thanks for the info man. Just one more question, if I want to replace the thermal pads on the GPu would I need to use 1.0mm or the suggested 0.5mm as you suggested with the CPU ones?

 

1.0mm on the GPU. The GPU doesn't have the heatsink imbalance issue the CPU has, and since it isn't mulitple separate cores (at least not like the CPU), you don't have to worry about one core being 65C and the other 80C...

0.5mm on the CPU to help reduce heatsink 'leverage' pressure causing higher core temps on cores #0 and #2 (first and third core).. But as you saw in the main GT73VR thread, some CPU heatsinks just have to be sanded flat in addition to this.

 

Oh ok and yeah, I noticed that in the main thread, I’ll have check my heat sink to make sure it’s flat as I have noticed the fluctuations in cpu were because of the core differences in temps, I’ll make sure to keep looking in the main thread as I have seen you and many others have contributed very valuable info in there about this laptop. Thank you again Falkentyne.