For sale: a Razer Core X Thunderbolt 3 external graphics enclosure, model RC21-0131. It turns a Thunderbolt 3 laptop or small form-factor desktop into a machine with a desktop-class GPU.

No graphics card is included — this listing is for the enclosure alone.

What it does

The Core X connects over a single Thunderbolt 3 cable, carries display data and up to 100 W of laptop charging, and lets the installed card drive its own monitors directly. The inner tray slides out for card installation, and the internal 650 W ATX supply means there is no external power brick.

Specifications

Item Specification
Model Razer Core X, RC21-0131 (product RC21-01310100)
Host connection Thunderbolt 3 / USB-C, up to 40 Gbps
GPU support One full-length, up to 3-slot-wide PCIe x16 card
Internal clearance Approx. 330 mm long × 160 mm high × 60 mm wide
Power supply 650 W internal ATX, two 8-pin PCIe leads
Laptop charging Up to 100 W over USB-C
External dimensions Approx. 374 × 232 × 168 mm
Weight Approx. 6.46 kg
Finish Aluminium body, black

Check your card’s length, thickness and power connectors against those figures before buying. The 60 mm internal width is the tightest dimension.

Compatibility

  • Windows 10/11: works with a Thunderbolt 3 port that supports external graphics.
  • Linux: Thunderbolt 3 eGPU support is mature.
  • macOS: the Core X itself is a Mac-compatible enclosure, but macOS only supports specific AMD cards. NVIDIA cards are not supported on current macOS, so plan on Windows or Linux if you fit one.
  • Check that your machine’s Thunderbolt port actually supports external graphics. Some laptops have Thunderbolt 3/4 for data and displays only.

Condition

  • Used, fully working, with some cosmetic marks from normal use.
  • Includes the internal PSU and a Thunderbolt 3 cable.
  • No GPU included.
  • No original retail box is guaranteed, but it will be packed properly for shipping.
  • Can be inspected and tested in Vancouver by arrangement.

Photos

Front and side view of the Razer Core X enclosure
Front and side view.
Rear of the Razer Core X showing the Thunderbolt 3 port, USB ports, power inlet and switch
Rear I/O and power.
Side vents and aluminium body of the Razer Core X
Side vents and aluminium body.
Label on the Razer Core X 650 W internal power supply
650 W internal PSU (Razer PS-8651-2).
Interior of the Razer Core X with a card fitted for the photo
Interior with a card fitted for the photo; the graphics card is not included.

Price and shipping

US$250 (≈ C$350) or nearest offer.

Pickup in Vancouver, BC, or shipping worldwide at the buyer's expense. The enclosure is about 6.5 kg, so I will quote exact shipping before you commit. Payment can be made in USD or CAD.

CAD prices are approximate, converted at US$1 ≈ C$1.41 on 10 November 2026.

Payment by PayPal G&S, Interac e-transfer, or cash on pickup. If you want more photos or the exact serial number before buying, get in touch.