Fighting with temps in P775DM3G

Hello I fight with temps in my P775DM3G. I7770K + 1080. I delided the procesor and put
Grizzly Conductonaut on Chip. Temp goes down + undervolt - 0.130V. But temps Are about 80C GPU and CPU. Now I have about month new thermal Paste on CPU and GPU Grizzly Kryonaut. On Gpu near CPU I put new thermal pads Gelid Ultra

I read this theard http://forum.notebookreview.com/thr...dm2-3-g-p75xdm2-g-sager-np9152-np9172.795911/ but I have a questions. Maybe put grizzly conductonaut on GPU and CPU ? But i litte scarry about corrosion the heatsinks.

And I have mod http://forum.notebookreview.com/thr...ctive-cooling-mod-for-p775dm2-p775dm3.803626/

 

The heatsinks are copper so while you do get a bit of a reaction it's not severe. Mostly the danger of it escaping and running over the board. 80C load is perfectly acceptable.

 

Hmmm, I have an idea to put some small readiators on the heat sink. I do it in MSI GT783DX and it works perfectly.

I always protect the electronics with varnish so that when I use liquid metal, it does not short circuit

And this Is my undervolt GTX1080 its ok ? Or maybe change something ?

 

Does the voltage stay at 925mV when you set that curve? You can test that with GPU-Z. If it doesn't honor it, give this guide a look.

 

Thanks i undervolt my gpu and temps gpu are about 75C.

But i think better use LiqudMetal on GPU na CPU or not ?

 

Depends on how the contact between GPU die and the heatsink is. Liquid metal works great if you have perfect contact, since you want a thin coat of it. But if you have any gaps, it will perform worse than paste, depending on the severity of it. Not to mention, if you have never used LM before, you will need to mask the die and treat the copper.

 

I know in time cooper will have corrodion with LM. I fight with contact with GPU and CPU. Now i have perfect. A I use FQ http://forum.notebookreview.com/thr...ctive-cooling-mod-for-p775dm2-p775dm3.803626/ and contact is great now.

 

The GPU die on the 1080 is quite large, so gains with LM are not as monumental as with a CPU die. You can always test it vs good thermal paste and see if it makes sense.

 

Remember heatsinks need airflow.

 

Have you got Idea to improve the airflow ?

 

Depends where you need it, case modification and cooling stands are the most obvious ways usually.

 

Also raising the bottom by an inch helps.

 

Yup, and it works much better than sticking an off the shelf notebook cooler under the chassis. Since most of those pads actually end up restricting airflow, or don't have the fans in the right position.

 

Making your own stand can also help but is a bit time consuming

 

jc_denton
I have questions. I see you overclock your GTX1080M you undervolt your GPU ?

 

I did have an undervolt when it was in the P775TM1 chassis, but the P870TM1 dual gpu vapor chamber allows for more thermal headroom. So I allow the card to use 1.063v, as the temps stay quite low.

 

So u put 2088 on 1.063v nad you have stable @2088 ? I serach best performance and temps on my GTX1080 try a lot options, but on Call of Duty Warzone have about 100FPS on 77-80C at 1.063 @ 2101

 

There's silicon lottery for the GPUs as well, for instance my card does great with memory OC, but the core tops out around 2088Mhz for 3DMark. You want to keep the card cool, since the GPU Boost 3.0 will do 12Mhz downsteps for every few degrees above 38c. So even if you set the core to 2101Mhz, it won't hold it there due to temps/boost behavior. You can log the core frequency in MW and see how it will gradually step down until it settles. Just keep Afterburner minimized during a match and you can check where the core frequency settled.

From what I recall, I had mine locked to 1936Mhz 0.950mV in the P775TM1.

 

Thank for advice ! The CPU I7 8700K/8086K will be better performance/temps than I7 7700K ? I think the P775DM3G support if I upgrade the bios mod ?

 

Forgot to mention, that I run a power mod on my 1080, so even with 1.063v the card does not hit the power limit. Something to keep in mind, since 1080 is limited to 200W.
A good binned 8700K or 8086K should be able to do 5Ghz with some tweaks and mods, but you might want to keep an eye on the VRMs. Not sure about the bios, you should inquire about it in the bios thread.

 

So i must think to better cool the VRAM,s hmmm I used one one the best thermalpads any where and temps litte go down.

 

What is the best heatsink for P775DM3G ? for GTX1080 ?

 

I think the TM individual heatsinks are considered the best.

 

I'd be interested if this is still the case with the 8086k, since 9900K does run hotter with a unified heatsink from what I recall.

 

Same thermal density just less of it so I don't see why not. Delid vs Delid and sand.