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i7 7700HQ - Undervolt

Tomthehitman
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So I have recently just bought an MSI gaming laptop (GP62MVR 7RFX) and I noticed that when gaming the CPU temps were reaching nearly 90°C, even though intel say it's fine as long it's under 100°C I still thought it was quite high.I did some research and found that underclocking this CPU will decrease the temp. I used intel XTU and have decreased it by -0.115 and it seems to be running a lot cooler, only 75°C in games now. 

 

Is this a well know issue with these CPU's? Also will keeping the voltage down have any impact on performance or the life of the CPU in the future?

 

Thanks 

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As far as I know, adding voltage is what reduces CPU lifespan so decreasing voltage should in theory do no harm or even increase the CPU's lifespan.

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Very well known issue with the 7700HQ, the one in my Alienware loves to run hot also. Undervolting shouldn't have any impact on the life of the cpu.

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I think Dave2D did a video on undervolting the 7700hq where he went through the pros and cons.

I tried it on my laptop when I got it and dropped my temps quite significantly which allowed me to increase the clock of the GPU as they share the heatsink

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3 minutes ago, Tomthehitman said:

So I have recently just bought an MSI gaming laptop (GP62MVR 7RFX) and I noticed that when gaming the CPU temps were reaching nearly 90°C, even though intel say it's fine as long it's under 100°C I still thought it was quite high.I did some research and found that underclocking this CPU will decrease the temp. I used intel XTU and have decreased it by -0.115 and it seems to be running a lot cooler, only 75°C in games now. 

 

Is this a well know issue with these CPU's? Also will keeping the voltage down have any impact on performance or the life of the CPU in the future?

 

Thanks 

It is well known but as you heard from intel its not an issue unless it goes above 100c. However temps that high are not ideal and having fans ramp up like that isn't fun either. Its one of those things that is left up to the laptop oem they get to decide between temp, thickness, and noise to figure out which combination works best for the machine they want to produce and the customer experience. but yes one easy thing to do is to undervolt the cpu. This wont cause any long term damage and in fact technically would make the cpu last longer since the things that wear the silicon out are heat and voltage. The only downside is really if it is stable in everything it will do which varies so much its hard to pin down with just one kind of stress test but should be treated the same way you validate an overclock.

 

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5 minutes ago, ApolloX75 said:

Very well known issue with the 7700HQ, the one in my Alienware loves to run hot also. Undervolting shouldn't have any impact on the life of the cpu.

Just so you know Alienware specifically set their fan curve to let the cpu get up to 90c even if you undervolt a stress test should bring it back up around the same temp either way but you will notice lower temps in day to day tasks.

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10 minutes ago, Nogghan said:

@Tomthehitman you should also try changing out the thermal paste on your CPU it could help by a couple degrees

I'm not sure if that will void the warranty and as I've only had the laptop about a month I'm not sure if the temp decrease is worth the risk.

 

13 minutes ago, yolosnail said:

I think Dave2D did a video on undervolting the 7700hq where he went through the pros and cons.

I tried it on my laptop when I got it and dropped my temps quite significantly which allowed me to increase the clock of the GPU as they share the heatsink

Thanks, I've just googled and given the video a watch, might see if I can get the voltage down slightly further! 

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Laptop makers can't individually determine voltages for each chip so usually the voltage it gets fed is way higher than it needs because a select few chips will need that much. As long as the undervolt is stable, there's not much harm you can do.  Instead, it should be good for the CPU

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15 hours ago, DocSwag said:

Laptop makers can't individually determine voltages for each chip so usually the voltage it gets fed is way higher than it needs because a select few chips will need that much. As long as the undervolt is stable, there's not much harm you can do.  Instead, it should be good for the CPU

Thanks, think I will keep tinkering with it then to see if I can get it lower!

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