Can the NVIDIA B300 run Hy3?
IT FITS
Yes. 7 of 9 formats evaluated fit in 270 GB, at 8,192 tokens. No published file exists for this pair, so every size is rebuilt from the pinned architecture. The best quality that fits is Q6_K, needing 244.5 GB and running at an estimated 287 tokens per second.
Fitting in memory is not the same as loading. Whether the runtime and version you have supports this architecture and format on this machine has not been tested here.
How long a conversation. At Q6_K, this pair holds 86,055 tokens of context — roughly 64,541 words — needing 270.0 GB. Past that the NVIDIA B300 runs out of memory, not the model out of context, which would allow 262,144. This is the wall a long chat hits after it has already loaded fine. The nearest round setting below it is 65,536.
Every format evaluated
No published file exists for this pair, so every size is rebuilt from the pinned architecture. The Basis column says which is which for each row. Decode and first-token figures are calibrated estimates, not runs on this card.
| Format | Needs | Of 270 GB | Fits | Decode | First token | Basis |
|---|---|---|---|---|---|---|
| FP16 | 590.7 GB | 219% | short by 320.7 GB | does not run | — | reconstructed size |
| Q8_0 | 315.6 GB | 117% | short by 45.6 GB | does not run | — | reconstructed size |
| Q6_K | 244.5 GB | 91% | yes | ~287 tok/s | no comparable peak | reconstructed size |
| Q5_K_M | 211.9 GB | 78% | yes | ~325 tok/s | no comparable peak | reconstructed size |
| Q5_0 | 205.6 GB | 76% | yes | ~331 tok/s | no comparable peak | reconstructed size |
| Q4_K_M | 181.2 GB | 67% | yes | ~371 tok/s | no comparable peak | reconstructed size |
| Q4_0 | 169.0 GB | 63% | yes | ~386 tok/s | no comparable peak | reconstructed size |
| Q3_K_M | 148.7 GB | 55% | yes | ~436 tok/s | no comparable peak | reconstructed size |
| Q2_K | 110.0 GB | 41% | yes | ~537 tok/s | no comparable peak | reconstructed size |
Sized at 8,192 tokens of context with the whole model resident — weights, the KV cache and the runtime reserve, offload off. Speed is only quoted for a format that fits: a rate for a configuration that cannot load is not a fact about anything.
Why the first-token figure is the same on every row
First token is modelled from the arithmetic the prompt requires, and that count does not change with the weight format — which is why it reads the same on every row. Real prefill does vary by format, because a quantized matmul is a different kernel; this model does not capture that, and the figure should be read as an order of magnitude rather than a ranking between formats.
What the labels mean
- published data
- Read from a published source — a file's byte count, a model's configuration or a manufacturer's specification — or exact arithmetic on such values. Not a measurement on a machine.
- reconstructed size
- Weight size reconstructed from the pinned architecture, because no published file exists.
- size range
- Only a lower and an upper bound are claimed for this weight size.
- estimate
- Calculated from sourced inputs by a stated method; an estimate, not a measurement.
This page fixes the context at 8,192 tokens and one device. Batch, concurrent users, KV-cache format, clusters and rental cost are all in the calculator, already set to this pairing.
Hy3’s architecture is read from its publisher’s own config.json at a pinned revision, and the NVIDIA B300’s 270 GB and 7700 GB/s come from the manufacturer’s specification. How far each figure can be trusted is published, per format and worst case included, on the accuracy scorecard.
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