Questions regarding P870KM1 heatsink upgrade & fan control

Good afternoon fellow NBR members.

I've seen a few threads that mentioned upgrading the P870KM1 with heatsink(s) from a TM model (if I recall correctly). I am running the laptop in my signature with 1080 GTX SLI and a 7700K.

1. I have the vapor chamber GPU heatsink. Does the upgrade require me to replace both the GPU and CPU heatsinks?
2. Are load temperatures reduced significantly enough to justify the cost/labor of the upgrade?
3. If the upgrade is indeed worth the investment, could someone kindly point me to a guide/tutorial, if one exists?

Regarding fan control on the P870KM1...I have long since removed Control Center because the fan control wasn't very precise. More often than not it would start the fans way too late, and sometimes not start the fans at all. Is there a good program for fan control out there yet?

Any help is much appreciated.

 

1. If your vapor chamber is the stock KM1 unit that has extra heatpipes going into the CPU heatsink, you will need to replace or modify it. As TM1 CPU heatsink has an extra radiator for the VRMs and will not fit together with KM1 vapor chamber unless modded. Mod is mentioned on the forums.
2. 10-15c
3. http://forum.notebookreview.com/thr...0km1-p870km-to-tm1-partial-conversion.829358/

and a very good KM1>TM1 thread by brother @matyee
http://forum.notebookreview.com/thr...heatsink-4th-fan-2080rtx-vaporchamber.831287/

 

@jc_denton Thank you for that information. 10-15° is a significant decrease in temperature.

 

10-15c is from looking at the comparison between km1/tm1 heatsink here
http://forum.notebookreview.com/thr...artial-conversion.829358/page-4#post-10943706

To go further you can pair it up with either a delid, custom ihs, liquid metal or a direct die vapor chamber mod.
http://forum.notebookreview.com/threads/p870tm-2nd-cpu-fan-port.812706/page-10#post-10993736
http://forum.notebookreview.com/threads/clevo-2020.830221/page-73#post-11014468

 

Thanks again. While we're on the subject, is there a modification for the KM1 GPU heatsink as well?

 

Apart from having to cut the extra heatpipes in order to fit with the TM1, not as far as I know. Try asking in the P870KM1 owners lounge.

 

The actual vapor chamber bit for the GPU is basically the same.

 

I appreciate all of the help guys. I'm glad to hear that there's no need to replace the GPU vapor chamber.

 

It's certainly a good heatsink

 

Search my posts, I have made a very detailed workaround how to do it. It was worth doing it for sure, but I highly recomment buy a 4th fan (sepa) and connect to sata 3,3V port, which makes a big difference. GL

 

I tagged it in the 2nd post, as it's a great write up and mod.

 

Here are the part numbers I've managed to scrape up:

P870TM CPU X-bracket: P/N: 6-33-P87F0-011: Have not purchased yet, but clevo-computer.com looks to be selling it for €49.00 ($55 USD).



P870TM CPU heatsink/fan assembly: P/N: 6-31-P87FN-1A1: Purchased on eBay for $77 USD.


I'll speak in very general terms because I'm a mechanic/engineer:

1. Dremel an area large enough for the TM CPU heatsink's secondary radiator.
2. Remove KM CPU X-bracket.
3. Install TM CPU X-bracket.
4. Install TM CPU heatsink.
5. Put laptop back together.
6. Profit.

Is any other physical modification required other than step 1 above?
Is the secondary CPU fan that @matyee added mandatory or optional?
Does the included TM CPU fan simply plug into the KM's existing socket and run normally (controlled by BIOS)?

My first laptop was an Alienware M17-R1 with 3870 HD Mobility in CrossFire. Had many since. I've done some pretty crazy modifications to my laptops for far less temperature drop.

Is the mod truly this simple?

Regards to everyone that has been helping me out.

 

Second fan is purely optional to take advantage of the second radiator on the TM1 heatsink, 3-5c difference depending on setup. But requires power to be pulled from a SATA plug instead, as TM1 has a dedicated 5v fan connector. TM1 heatsink uses the same 12v fan controlled by EC, so it's plug and play.

Dremel and cutting, bracket and backplate
http://forum.notebookreview.com/thr...0km1-p870km-to-tm1-partial-conversion.829358/

And make sure to check out @ole!!! 's direct die vapor chamber mod. It might be a fun future project, or you could do it while modding the chassis, since you have the whole thing disassembled anyway.
http://forum.notebookreview.com/threads/p870tm-2nd-cpu-fan-port.812706/page-10#post-10993736

Direct die vapor chamber mod is a significant temp reduction.

Spoiler

 

That or a taller IHS like my old bitspower one that I dremmeled out for the larger die.

 

I understand the direct die vapor chamber mod, but how does it differ from a simple de-lid of the CPU?

 

10-100x higher W/mK thermal dissipation when compared to regular copper ~400W/mK. Heat spreading in two dimensions, reduces hotspots ie. core to core deltas are tighter.
http://forum.notebookreview.com/threads/clevo-overclockers-lounge.788975/page-1886#post-10999525

 

Oh man...that mod is actually pretty sweet.

It is absolutely crazy how far laptop cooling mods have come in the last few years.

I remember I thought I was super cool when I added extra washers so that my heatsinks would press down harder on the CPU/GPU dies...

 

That still goes on too

 

Once you begin to stack several of these mods, the temp reduction does become quite significant.

 

Liquid metal, thermal pad adjustment together did over 20C for me.

 

Vapor chamber is good for another 10-15c drop

 

That was for the GPU I was thinking about, less pads to worry about CPU wise.

 

I ordered the CPU X-bracket from Clevo and got a cancellation email a few hours later stating they could not ship to the U.S. due to some COVID-19 restriction. The extra CPU fan and heatsink seem to be inbound without any issues.

Is anyone able to help me out with finding another vendor?

Any help is much appreciated.

 

Try reaching out to https://www.hidevolution.com/ - They are US based, and might have the parts in stock. @Donald@HIDevolution

 

You could try our support team.

 

My KM1 is originally from HID Evolution, but I'll try both.

Now, do I need the whole kit, or only the x-bracket? The CPU retainer (I don't know the technical name) looks to be the same as the one I already have.

I appreciate all of the help.

 

I think you mean ILM? Intel Loading Mechanism. It should be the same, but perhaps brother @DaMafiaGamer can be more of help about KM1 to TM1 conversion.
http://forum.notebookreview.com/thr...0km1-p870km-to-tm1-partial-conversion.829358/