What GPU do I need to run lightx2v/MiniMax-H3-Prompt-Rewriter-Qwen3.8-27B-Ref2VA?
27.4B parameters, published in BF16. View on Hugging Face
Set up MiniMax-H3-…en3.8-27B-Ref2VAMiniMax-H3-Prompt-Rewriter-Qwen3.8-27B-Ref2VA is published by lightx2v on Hugging Face, with 55,359 downloads and 89 likes to date. It's a Qwen3_5ForConditionalGeneration model built for text-generation, published natively in BF16.
VRAM required & cheapest live GPU fit
Required VRAM = weight size at each precision times a flat 1.2 overhead for activations and fragmentation. The KV-cache grows with context and is not in that factor; it is listed per model below where the architecture is published. Full formula and assumptions: methodology.
| Precision | Weight size | Required VRAM | Cheapest live fit | GPUs needed | Est. $/hr (full fit) |
|---|---|---|---|---|---|
| BF16 | 51.0 GB | 61.1 GB | RTX PRO 6000 | 1 | $1.38/hr |
| cheaper alt. | RTX 3090 | 3 | $0.485/hr | ||
| FP8 (quantized) | 25.5 GB | 30.6 GB | RTX 4080 Super | 1 | $0.472/hr |
| cheaper alt. | RTX 5060 Ti | 2 | $0.408/hr | ||
| INT4 (quantized) | 12.7 GB | 15.3 GB | RTX 3090 | 1 | $0.162/hr |
A GPU is only matched to a row if its hardware supports that precision, and the primary recommendation is always a single-GPU fit when one exists.
INT4 requires a quantized checkpoint actually published for this model, check its Hugging Face page before relying on this row.
Cheapest way to run MiniMax-H3-Prompt-Rewriter-Qwen3.8-27B-Ref2VA at its published (BF16) precision: 1× RTX PRO 6000, at $1.38/hr per GPU ($1.38/hr total). Quantizing to FP8 or INT4 (rows above) can cost less, but requires a compatible quantized checkpoint to exist for this model.
MiniMax-H3-Prompt-Rewriter-Qwen3.8-27B-Ref2VA: KV cache by context length
The KV cache is the memory the attention layers hold for every token of context, on top of the weights. It is not part of the flat 1.2x overhead in the table above, grows with context length and with every concurrent request, and is why a long-context deployment needs more VRAM than the table shows.
Hybrid: only the full-attention layers cache per token; the other layers keep a fixed-size state. Cached per token: 65,536 bytes at 16-bit.
| Context | KV cache, one sequence |
|---|---|
| 4K | 0.25 GB |
| 32K | 2.0 GB |
| 128K | 8.0 GB |
| 256K (model maximum) | 16.0 GB |
Computed from the layer, head and window counts in the model's own configuration (lightx2v/MiniMax-H3-Prompt-Rewriter-Qwen3.8-27B-Ref2VA), at 16 bits per cached value. Each concurrent sequence needs its own cache, on top of the weights.
MiniMax-H3-Prompt-Rewriter-Qwen3.8-27B-Ref2VA: common questions
Can MiniMax-H3-Prompt-Rewriter-Qwen3.8-27B-Ref2VA run on a single GPU?
Yes, but not on a desktop card. At BF16 it needs 61.1 GB of VRAM, more than a single 32 GB desktop card holds. The cheapest live single-card fit is a 95.0 GB RTX PRO 6000 at $1.38/hr.
What is the least VRAM MiniMax-H3-Prompt-Rewriter-Qwen3.8-27B-Ref2VA can run in?
15.3 GB, at INT4 (quantized), which fits a 16 GB card, against 61.1 GB at BF16. That row assumes an INT4 checkpoint has actually been published for this model, so check its Hugging Face page before planning around it.
Does quantizing MiniMax-H3-Prompt-Rewriter-Qwen3.8-27B-Ref2VA lower the GPU bill?
Yes. At BF16 the cheapest live fit is one RTX PRO 6000 at $1.38/hr. At INT4 (quantized) it drops to one RTX 3090 at $0.162/hr, provided a quantized checkpoint exists for it.
Weight-to-VRAM math, the fit rules, and how live prices are normalized: full methodology.
More MiniMax H3 models
- MiniMax-H3 (33.1B, BF16)
- Pika-H3-Flex (33.1B, BF16)
- P-H3-Image (33.1B, BF16)
- FastVideo-Minimax-FastH3-Preview-v0.2 (35.0B, BF16)
- FastVideo-FastH3-4-step-Preview-v1-VSA-DataFree (35.0B, BF16)
More on MiniMax-H3-Prompt-Rewriter-Qwen3.8-27B-Ref2VA
Fits on an 80 GB GPU at BF16: every model that fits in 80 GB.
Fits on a 32 GB GPU at FP8: every model that fits in 32 GB.
Fits on a 16 GB GPU at INT4: every model that fits in 16 GB.
Related reading: RTX PRO 6000 pricing and specs, How much VRAM you need for LLMs, What AI inference is, and What AI model fine-tuning is.
