The IGX Thor Developer Kit moves to a newer GPU architecture (Blackwell instead of Ampere). It also has twice the system memory (128 GB vs. 64 GB) and higher listed system memory bandwidth (273 GB/s vs. 204.8 GB/s). It also comes with a discrete GPU already installed, while on the IGX Orin Developer Kit the discrete GPU is optional.
| IGX Thor Developer Kit | IGX Orin Developer Kit | |
|---|---|---|
| Built-in GPU architecture | Blackwell | Ampere |
| Built-in GPU CUDA cores | 2,560 | 2,048 |
| Built-in GPU Tensor cores | Not listed | 64 |
| System memory | 128 GB LPDDR5X | 64 GB LPDDR5 |
| System memory bandwidth | 273 GB/s | 204.8 GB/s |
| Discrete GPU | RTX PRO 6000 Blackwell Max-Q, pre-installed, with 96 GB GDDR7 | Optional RTX 6000 Ada |
About these figures:
- Bandwidth: The bandwidth figures go with the LPDDR5X/LPDDR5 system memory. I couldn't find bandwidth figures for either discrete GPU's own memory.
- Discrete GPU memory: On the Thor kit, the 96 GB of GDDR7 sits on the discrete GPU and is in addition to the 128 GB of system memory. I couldn't find a memory size for the optional RTX 6000 Ada on the Orin kit.
- Peak performance: The two kits publish peak figures in different formats, so they can't be compared directly. Thor is rated at up to 5,581 FP4 TFLOPS (sparse). Orin is rated at up to 1,705 TOPS (sparse), and that figure includes the optional discrete GPU.
Datasheets: