Can the AMD Radeon RX 6950 XT run granite-4.1-3b?
IT FITS
Yes. 9 of 9 formats evaluated fit in 16 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 FP16, needing 8.80 GB and running at an estimated 60 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.
Find the AMD Radeon RX 6950 XT: Amazon ↗ · eBay (new and used) ↗Store links may pay us a commission. They never decide which card is suggested — the memory arithmetic does.
How long a conversation. At FP16, this pair holds 96,140 tokens of context — roughly 72,105 words — needing 16.0 GB. Past that the AMD Radeon RX 6950 XT runs out of memory, not the model out of context, which would allow 131,072. 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 16 GB | Fits | Decode | First token | Basis |
|---|---|---|---|---|---|---|
| FP16 | 8.80 GB | 55% | yes | ~60 tok/s | no comparable peak | reconstructed size |
| Q8_0 | 5.36 GB | 34% | yes | ~105 tok/s | no comparable peak | reconstructed size |
| Q6_K | 4.48 GB | 28% | yes | ~129 tok/s | no comparable peak | reconstructed size |
| Q5_K_M | 4.09 GB | 26% | yes | ~144 tok/s | no comparable peak | reconstructed size |
| Q5_0 | 4.03 GB | 25% | yes | ~147 tok/s | no comparable peak | reconstructed size |
| Q4_K_M | 3.72 GB | 23% | yes | ~162 tok/s | no comparable peak | reconstructed size |
| Q4_0 | 3.60 GB | 23% | yes | ~169 tok/s | no comparable peak | reconstructed size |
| Q3_K_M | 3.32 GB | 21% | yes | ~186 tok/s | no comparable peak | reconstructed size |
| Q2_K | 2.89 GB | 18% | yes | ~224 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.
Open in the calculator →Everything the AMD Radeon RX 6950 XT runsBest models for 16 GB
granite-4.1-3b’s architecture is read from its publisher’s own config.json at a pinned revision, and the AMD Radeon RX 6950 XT’s 16 GB and 576 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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