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ideapad gaming 3 cooling mod

proooo

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I did a modification to put the fans to the maximum manually (more than with the performance mode that includes). With this mod I got a reduction of 10c playing demanding cpu games like Fortnite, I went from 93c to 78c-86c. I added a switch to be able to choose if I want the fans to the maximum or to let the system control them. use google translator, in case the text has typos.

note, always use liquid metal
 

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proooo

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So what does that switch actually toggle?

@L-C this might be interesting to you :p
the switch alternates the blue and green wire of the fans,
what would be the rpm control, the fan has 4 wires, you have to leave the yellow wire that would be detecting the fan or otherwise the equipment is protected, I will draw a diagram.


to you make this modification, the motherboard would give all the amperage to the fans, the noise increases a lot, this is something similar to an option that has the nitro 5 that leaves the fans at their maximum power. This modification does not cause damage to the fans, since it is the maximum power given by the manufacturer, this modification was made in the absence of a software that provides control over fans. note, the gpu under almost 10c, in heavy games it does not exceed 70c I did a test in furmark for 1 hour and the gpu did not pass 80c
 
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System Name Desktop / Laptop
Processor Intel i7 6700K @ 4.5GHz (1.270 V) / Intel i3 7100U
Motherboard Asus Z170 Pro Gaming / HP 83A3 (U3E1)
Cooling Noctua NH-U12A 2 fans + Thermal Grizzly Kryonaut + 5 case fans / Fan
Memory 16GB DDR4 Corsair Vengeance LPX 3000MHz CL15 / 8GB DDR4 HyperX CL13
Video Card(s) MSI RTX 2070 Super Gaming X Trio / Intel HD620
Storage Samsung 970 Evo 500GB + Samsung 850 Pro 512GB + Samsung 860 Evo 1TB x2 / Samsung 256GB M.2 SSD
Display(s) 23.8" Dell S2417DG 165Hz G-Sync 1440p / 14" 1080p IPS Glossy
Case Be quiet! Silent Base 600 - Window / HP Pavilion
Audio Device(s) SupremeFX Onboard / Realtek onboard + B&O speaker system
Power Supply Seasonic Focus Plus Gold 750W / Powerbrick
Mouse Logitech MX Anywhere 2 Laser wireless / Logitech M330 wireless
Keyboard RAPOO E9270P Black 5GHz wireless / HP backlit
Software Windows 10 / Windows 10
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Aug 28, 2021
Messages
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the switch alternates the blue and green wire of the fans,
what would be the rpm control, the fan has 4 wires, you have to leave the yellow wire that would be detecting the fan or otherwise the equipment is protected, I will draw a diagram.
You’re basically disconnecting the pwm signal right ? I thought laptops got so smart that this trick didn’t work anymore in new laptops, Lenovo is an exception I guess
 

proooo

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Feb 16, 2021
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Hmm, I just see a switch connected to nothing?

This thread belongs here btw: https://www.techpowerup.com/forums/forums/cases-modding-electronics.17/
sorry, I have not taken photos I was doing tests, later I will take more photos as I will correct the wiring.

You’re basically disconnecting the pwm signal right ? I thought laptops got so smart that this trick didn’t work anymore in new laptops, Lenovo is an exception I guess
Exactly !, that is possible by leaving the yellow cable connected, which would be the fan detection, if you disconnect that cable, the bios activates the protection systems and turns off.
This works because the manufacturer allows it, in theory according to me the motherboard manages the speed of the fans by attenuating the pwm signal.
on other laptops they don't have the pwm cable and only adjust the voltage.

do you have any suggestions? :)
 
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on other laptops they don't have the pwm cable and only adjust the voltage.
Actually most laptops these days use pwm to control the fans ..

enjoy your laptop , much cooler but also much more noisier :p

do you have any suggestions? :)
Maybe a low profile switch will look better , something like a laptop wifi switch

F0D767D5-FEF8-44D9-85AA-D8FBEDB07B7F.jpeg

145CB417-0D5B-4753-AD38-A1AF9BEC0B06.jpeg
 

proooo

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Joined
Feb 16, 2021
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Actually most laptops these days use pwm to control the fans ..

enjoy your laptop , much cooler but also much more noisier :p


Maybe a low profile switch will look better , something like a laptop wifi switch

View attachment 221002
View attachment 221003

The problem with these switches is that they are not two-way, the switch that I put is two-way because it alternates two cables since this laptop has two fans and I need to alternate two pwm signals
 
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343 (3.77/day)
The problem with these switches is that they are not two-way, the switch that I put is two-way because it alternates two cables since this laptop has two fans and I need to alternate two pwm signals
Yeah not the ones in the pictures, but you get the idea ... I don’t know where to buy One , but they are used in Bluetooth mice and Bluetooth headphones
 

proooo

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Yeah not the ones in the pictures, but you get the idea ... I don’t know where to buy One , but they are used in Bluetooth mice and Bluetooth headphones
interesting, with time I will improve it, later I will upload photos of the final result
 
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