Google M.2 Accelerator B+M key vs Google Coral USB Accelerator
These two are closely matched - the right pick comes down to the specific job below.
The verdict
- Fit
- Google Coral USB Accelerator is easier to add to a mini-PC (USB, fits any box).
Which wins for each job
| Job | Google M.2 Accelerator B+M key | Google Coral USB Accelerator |
|---|---|---|
| Plex transcode | none | none |
| Frigate NVR | ~5 cameras | ~5 cameras |
| Local LLM | none | none |
| Fits a mini-PC | M.2, needs a spare slot | USB, fits any box win |
Approximate - capacity estimates from curated specs, the same logic as the recommender. Verify against your exact setup. Prices move; check the retailer.
Full specs
| Spec | Google M.2 Accelerator B+M key | Google Coral USB Accelerator |
|---|---|---|
| Price (list) | $30 | $60 |
| Type | tpu | tpu |
| Interface | m2-ae | usb |
| Transcode | - | - |
| Frigate detector | EdgeTPU (native) | EdgeTPU (native) |
| TOPS | 4 | 4 |
| VRAM (GB) | - | - |
| Low profile | no | no |
| GPU sharing | - | - |
| Power (W) | 2 | 2 |