eGPU case built around AKiTiO Thunder 2

3 min read

I decided to recreate a smaller version of the eGPU case I made in my previous setup. I combine an AKiTiO Thunder2 board and my old Sonnet Echo Express SE II to have a graphics card, SSD drive and a pair of USB 3.0 ports. There is room for an additional hard drive and PCI-e slot. The setup is cooled using two 200mm fans, one fan cooling the graphics cards, the other the laptop.

My eGPU setup with a 13 inch Retina MacBook Pro attached


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Check out my previous posts on the Sonnet Echo Express SE II and AKiTiO Thunder2. The only difference in parts is that I ditched the Sonnet power supply by powering the whole setup using a molex to barrel cable using this guide. You don’t need both boards, but since I have them both I integrated them both.

Build process

Building the case took two days of trial and error, but once I get the basic design below done the reset was just installing the boards from the Sonnet and AKiTiO and the top fan.

PSU, GPU and the side fan installed

To reduce the overall size of the setup I removed the boards from the Sonnet and AKiTiO. I used MakerBeam beams and screw standoffs to secure the boards to the case.

Using MakerBeam beams to secure the AKiTiO board

The case

The final case can be seen below. The laptop is a MacBook Pro retina 13 inch. The setup cannot get much smaller without reducing the size of the fans

eGPU case


The top is designed to cool the connected laptop

The top is designed to hold and cool a laptop using the large 200mm fan. Several self adhesive rubber pads are placed to protect the laptop from scratches. The thunderbolt cable is used to connect the laptop to the setup.

Side - GPU fan

Side – GPU fan

A 200mm fan is used to assist cooling the graphics card. Running the fan at low speed the graphics card will almost never use its own fans.

Side - AKiTiO

Side – AKiTiO
  1. ATX power supply, mounted using OpenBeam L brackets
  2. Thunderbolt cable connecting the Sonnet Echo Express SE II on the other side of the case
  3. Thunderbolt cable for the laptop
  4. EVGA GeForce GTX 970 graphics card
  5. AKiTiO Thunder2 board mounted on the side. Notice that since I am using a powered PCI-e riser I do not need to connect the power supply unit to the DC jack
  6. Fan control for the two 200mm fans

Side - Sonnet

Side – Sonnet
  1. 200mm fan for cooling the graphics card
  2. EVGA GeForce GTX 970 graphics card
  3. DIY MOLEX to barrel converter
  4. Sonnet Echo Express SE II with a SATA / USB combo card. The last PCI-e slot is not used

Side - Power Supply

Side – Power supply

Nothing much here except the ATX and the SSD disk. A smaller and modular power supply is on my to-do list.


  1. SSD disk
  2. ATX PSU
  3. Sonnet Echo Express SE II board
  4. 200mm fan that cools the graphics card
  5. Protective rubber feet
  6. EVGA GeForce GTX 970 graphics card

Whats next?

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