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USB C Pencil Screwdriver
Published: February 23, 2026
Video Description
In this video, I test extreme Pi 5 Peltier cooling to see if sub-ambient temperatures actually improve performance. Starting with passive cooling, then adding a fan, a full CPU tower cooler, and finally stacked TEC modules, I push the Raspberry Pi 5 down to 6°C under load.
Using stress-ng and Geekbench benchmarks, we compare thermal performance, power draw, and real-world gains to find out if extreme cooling is worth it, or just completely unnecessary.
ADDITIONAL INFORMATION
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Thanks to #PCBWay for providing the CNC services for this video, check out their easy order form to order your own CNC-machined parts - https://www.pcbway.com/rapid-prototyping/manufacture/
Visit my blog for the project write-up - https://the-diy-life.com/this-is-the-most-overkill-raspberry-pi-5-cooler-ive-ever-built/
PURCHASE LINKS
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Raspberry Pi 5 - https://amzn.to/4rmkxzj
Pi 5 Official Power Supply - https://amzn.to/4qM8qKU
Pimoroni NVMe Base - https://amzn.to/40hNCjp
Lexar NM620 NVMe SSD - https://amzn.to/3MyRutg
Passive Aluminium Heatsink - https://amzn.to/3ZMBCWX
40mm 5V Fan - https://amzn.to/3ZLD1gE
120mm CPU Tower Cooler - https://amzn.to/4kTJbVG
40mm 30W Peltier Module / TEC 12706 - https://amzn.to/4slrTTZ
Tools & Equipment Used:
FNIRSI IPS3608 Power Supply - https://s.click.aliexpress.com/e/_c37xDpMf
USB C Pencil Screwdriver - https://amzn.to/3KyIHG9
Infiray P2 Pro Thermal Camera - https://www.amazon.com/dp/B0BG2QC143?th=1
Sound Level Meter - https://amzn.to/42XkqPI
Some of the above parts are affiliate links. By purchasing products through the above links, you’ll be supporting this channel, at no additional cost to you.
CHAPTERS
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0:00 Intro
0:47 Designing & Machining The Components
2:45 Assembling The Test Pi
4:15 Testing The Standard Options
6:28 CPU Cooler
8:07 Peltier Coolers!
12:03 Final Thoughts
If you've got any ideas for Raspberry Pi, Arduino, or other Electronics projects or tutorials you'd like to see, let me know in the comments section.