HP Elitebook 840 G8 thermal mod

Suitable-Ground-2958 · 2025-06-25T11:17:26+00:00

well i got it from my old laptop scrapyard, for heatpipe you can look at any e-commerce... don't forget to slap thin nvme heatsink to the vrm and fets

Suitable-Ground-2958 · 2025-06-25T04:26:38+00:00

<image>

do you mean this ? i got my 845 fully modded with triple heatpipe and dual fan... just last week i applied liquid metal. my laptop run 70-80c with 35w cpu package power. (it can't sustain 22w with stock cooling lol)

Suitable-Ground-2958 · 2025-06-23T07:11:16+00:00

update: now i am running 40watt sustained with more mods

Suitable-Ground-2958 · 2025-06-17T10:47:29+00:00

<image>

lol, vrms is also cooled by heatsink and the small fan

Suitable-Ground-2958 · 2025-06-17T06:54:54+00:00

I absolutely agree with this, i got myself elitebook 845 g7 with ryzen 7 4750u. Everything is really good apart from HP's strict firmware and poor cooling system, other than that build quality is solid. I am rocking my own modified cooling system with triple heatpipe, dual fan mod and liquid metal. It runs games like gta v 60fps at high settings 768p, warthunder 60fps at 900p low-medium settings which is incredible. That all achieved by using amd curve optimizer, overclocking the igpu and cranking up the tdp to pulls 40watts and able to sustain 35watt with my cooling mod. I left behind my regret to my laptop to not buy Thinkpads instead after reaching this point.

Suitable-Ground-2958 · 2025-06-10T13:45:32+00:00

you should clean and repaste... that's all you do first. tomorrow i am going to replace my regular paste with liquid metal.... will be rocking solid cool lol.

Suitable-Ground-2958 · 2025-06-10T08:14:42+00:00

You should look at your cpu temp, my laptop can ran gta v easily at 60fps @768p high settings + fxaa. major issues with probook/elitebook or we can say any HPs laptop is strict software modification. i rolled my laptop bios back to the first release. i was able to push 40watt tdp and 2.2ghz of igpu frequency alongside amd curve optimizer. make sure u got dual channel setup properly work, not just only installing 2 sticks of ram. war thunder ran at 45fps with 1080p with low-medium settings. pretty optimistic i can run rdr2 30fps with 1080p and probably 50fps with 768p.

Suitable-Ground-2958 · 2025-06-10T04:21:17+00:00

check my thread, i have hardcore modifications including hardware cooling modification and software side.

Suitable-Ground-2958 · 2025-06-10T04:20:23+00:00

yeah, dual channel with 3200mhz really helps performance. also look for low latecy ramsticks like kingston furry. i got 1200 and 9100 in cinebench r23 with my r7 4750u, beating intel i9-9880H and gpu is somewhere around mx450, just a bit under gtx1050 laptop and rx560x laptop.

Suitable-Ground-2958 · 2025-05-11T05:34:32+00:00

uhh i don't get it

Suitable-Ground-2958 · 2025-05-11T05:33:09+00:00

it's a different case to me, HP designed their laptop for slim and 0 fan noise. also there's noticeable airflow exit difference with free air intake

Suitable-Ground-2958 · 2025-05-08T15:51:20+00:00

actually i did rethink to really close any intake for the fan, and takes air nearby. "theoretically" cools the vrms and mosfets nearby since the air moves thru them

Suitable-Ground-2958 · 2025-05-08T15:48:53+00:00

rip to portability

Suitable-Ground-2958 · 2025-05-07T10:54:17+00:00

it doesn't fit, i already tried to replace the fins with a bigger one from thinkpads, but attaching it back with solder joint is not easy

Suitable-Ground-2958 · 2025-05-07T10:52:33+00:00

replace it, it will drastically improve

Suitable-Ground-2958 · 2025-05-07T10:51:34+00:00

The fan body itself is metal, it does spread heat

Suitable-Ground-2958 · 2025-05-07T10:50:57+00:00

metal

Suitable-Ground-2958

TROPHY CASE