10 Raspberry Pi 4 compact cluster hardware list

Months ago I decided to build a Raspberry pi 4 cluster to try some distributed software projects on it. The main goal was to build it in a compact way and as cheap as possible. Planning all hardware buying is not a 5 minutes task so I thought about writing a short post.

This post tries to save you time if you're looking for something similar pointing what and where to buy all the stuff required and have your Raspberry 4 cluster ready to mount.

I bought all the pieces mainly in two places EBay and AliExpress. Obviously it took two weeks to have all these pieces together after they came from UK and China.

This is the summary of the required parts:

Part	Shop	price
10 Raspberry Pi 4 (4Gb Ram)	EBay (auction)	£258.90
10 Sandisk 16Gb SD Card	AliExpress	£20.87
10 USB Charger 3.5A 5V	AliExpress	£17.27
10 EU female socket	AliExpress	£9.58
10 CAT6 RJ45 network cable	AliExpress	£7.44
2 Gigabit 8 port switches	AliExpress	£21.08
2 Acrylic 5 stack Rpi4 case	AliExpress	£25.31
10 USB-A to USB-C cable	EBay (shop)	£7.89
10 CPU & chipset coolers	EBay (shop)	£8.04
1 pack Nylon Cable Ties	EBay (shop)	£2.49
1 4 meter Electrical cable	EBay (shop)	£4.94
2 UK 3A fused plugs	Robert Dyas	£2.58

This is the detailed item list from AliExpress: 

This is the detailed item list from EBay:

The trick to have 10 Raspberry Pi 4 (4Gb) at a really good price was to find an auction of 10 brand new of them, if you're not that lucky you can buy them in E-bay currently at around £43 each. 

After mounting all the pieces this is the result: 

This was a short post, Just an excuse to start my new 2020 blog with it. I hope you like it, more posts are coming related to projects using this raspberry pi 4 cluster and other interesting stuff.

Thank you for reading ;)