What are the differences between the P870(DM/DM2/DM3/KM/TM)?

[Wingolf]

What are the differences between the different models of the P870?

 

I'm looking to pick one up, it seems like it's just

 

P870DMx

     z170 Chipset

 

 

P870KM

     z270 Chipset

 

P870TM

     z370 Chipset

     Improved CPU Cooling Bracket

 

All of them seem to have the same case, keyboard, touchpad, IO, CPU(with BIOS mod), GPU and storage options.

 

Not 100% sure but all seem to be compatible 128GB RAM with some caveats(loss of Thunderbolt port) although 64gb would be more than plenty for me.

 

(Aside - Can you board swap this to a higher board, I.E. turn a DM2 into a TM with a motherboard swap?)

 

For reference, I'd be tossing an 8086k into it, and likely running Linux and Windows side by side. I'd be using 2 NVME drives, and would prefer to maintain thunderbolt compatibility if at all possible.

 

Am I missing any differences? Does the newer chipset actually offer a performance uplift or are they all pretty much equivalent.

[JamieTheAnything]

You're about right,

One thing to note I believe there are 3 different CPU coolers, and 3 different GPU cooler, (and one that adds potential water cooling and combines the GPU and CPU)
There's two different styles of coolers for the DM/KM
Dual GPU Var 1, (Non vapour Chamber I believe these are for the Dual 980's)

This is just one heatsink for each GPU.
Dual GPU Var 2, 10XX series
Vapor chamber

2.5
Vapor chamber that DOESNT include additional CPU cooling for the TM series
(as far as I know there is one Vapor chamber that does have a part jutting out to additionally cool the cpu from the DM2 and KM series however with the TM's new cooler it didint need to exist so there's one without it)

T-Style Single GPU cooler


Then for the CPU coolers it Goes
Single GPU/Dual 980 (Doesn't have the channel for the vapor chamber)

Dual GPU DM3? (has the channel for Vapor chamber sit in to assist in cooling the CPU)

TM series (Dual heat fins and an upgrade to 4 heatpipes for the CPU)

Then for an oddball there's the water cooler that combines the CPU and GPU to the same heatpipes along with enabling watercooling from RTD

 

And another out of stock option from aliexpress

 

 

 

 

That is all of the variants I have found for the P870 series so far.

[Developer79]

  On 3/17/2025 at 4:36 PM, JamieTheAnything said:

TM series (Dual heat fins and an upgrade to 4 heatpipes for the CPU)

Then for an oddball there's the water cooler that combines the CPU and GPU to the same heatpipes along with enabling watercooling from RTD

Expand  

Hi,
my development for the P870TM CPU concerns the intended connection for the second fan. With my development, it is possible to run the 5v fan controlled with the 12v fan. The 5v fan starts when the 12v fan starts!
It is also possible to upgrade the vapor chamber to the RTX30xx series!
Furthermore, the P870xx is the only laptop in the world that can accommodate desktop graphics cards...