AMD192 GB VRAM5,300 GB/s$2.5/hr

Pixtral 12B (VLM) on AMD MI300X 192GB: Does It Fit, How Fast, What It Costs

Pixtral 12B (VLM) at FP16 needs 24.0 GB for its weights and 34.7 GB in total at 8K context with 8 concurrent users. That means it fits on a single AMD MI300X 192GB. Every figure is computed by tokcalc's open-source capacity model.

Fits?
Yes, 1 GPU
34.7 GB needed / 192 GB available
Decode speed
143.5
tok/s per stream
Aggregate
1723
tok/s @ 8 concurrent
Cost / 1M tokens
$0.4032
1× AMD MI300X 192GB
What changes as you add AMD MI300X 192GBs
Tensor-parallel degree vs VRAM, throughput, and cost. Cost scales linearly with GPU count; decode throughput scales near-linearly too, so cost per token stays roughly flat.
GPUsTotal VRAMVRAM neededDecode tok/sAggregate tok/sTTFTCost / 1M tokFits?
1× AMD192 GB34.7 GB143.51723337.8 ms$0.4032✓
2× AMD384 GB34.7 GB244.05857184.5 ms$0.2372✓
4× AMD768 GB34.7 GB488.023426107.3 ms$0.1186✓
8× AMD1536 GB34.7 GB976.19370468.6 ms$0.0593✓
Concurrency vs context length
On 1× AMD MI300X 192GB at FP16. KV cache scales linearly with context, so this is the number of users your GPUs can actually serve.
ContextConcurrent usersKV per requestFits?
4K250687.2 MB✓ fits
8K1251.34 GB✓ fits
33K315.37 GB✓ fits
66K1510.74 GB✓ fits
131K721.47 GB✓ fits
Other GPUs that run Pixtral 12B (VLM)
Same workload, same quantization — ranked by value (tokens per dollar-hour).
GPUGPUsAggregate tok/sCost / 1M tok
RTX 5090 32GB2×1980$0.1403
A100 40GB SXM41×503.8$0.4963
AMD MI325X 288GB1×1950$0.4986
A100 80GB SXM41×650.0$0.5128
Intel Gaudi 3 128GB1×1073$0.5180
H100 SXM5 80GB1×1089$0.6378
Frequently asked questions

Can Pixtral 12B (VLM) run on AMD MI300X 192GB?

Yes. Pixtral 12B (VLM) at FP16 needs 34.7 GB including the KV cache, and AMD MI300X 192GB has 192 GB — so it fits on a single GPU.

How fast is Pixtral 12B (VLM) on AMD MI300X 192GB?

143.5 tokens/sec per stream and 1723 tok/s aggregate with continuous batching at 8 concurrent users. Time to first token is 337.8 ms, and inter-token latency is 7.0 ms.

What does Pixtral 12B (VLM) on AMD MI300X 192GB cost per million tokens?

$0.4032 per 1M output tokens at 1× AMD MI300X 192GB ($2.50/hr). That is the marginal hardware cost — add idle capacity, ops, and egress for the real figure.

How much VRAM does Pixtral 12B (VLM) need on AMD MI300X 192GB?

24.0 GB for the weights at FP16, plus 10.7 GB of KV cache for 8 concurrent requests at 8K context — 34.7 GB total. Every extra concurrent user at long context costs more, so leave headroom.

Is AMD MI300X 192GB the right choice for Pixtral 12B (VLM)?

It works. Compare $0.4032 per 1M tokens against the alternatives below — the cheapest option that fits the same workload is 4× RTX 3080 10GB at $0.0662, and the fastest is 1× Cerebras CS-3 (WSE-3) at 6500 tok/s.

Adjust the workload yourself

Same formulas, your context length, concurrency, and quantisation.

Open in calculator