NVIDIA DGX Spark
A small, quiet AI box built on NVIDIA’s GB10 chip (an Arm CPU and a Blackwell GPU sharing one pool of memory).
- Memory size: 128 GB (about 120 GB usable for AI work)
- Memory bandwidth: 273 GB/s, about 6.5 times slower than the RTX 5090
- Power: around 90 to 200 W while serving a model
- Compute capability:
sm_121 - Several Sparks can be cabled together (200 Gb/s ConnectX-7) to add up both memory and effective bandwidth.
In short, it’s the opposite of beast: lots of memory that’s slower to read.