Can I Run GLM-5 / GLM-5.1 on NVIDIA H100 80GB (PCIe)?
Written by Jakub Rusinowski · Last updated July 21, 2026
Yes, comfortably — GLM-5.1 72B at Q4_K_M needs 46.7 GB at 8K context (43.5 GB weights + 3.2 GB KV cache/overhead), leaving ~33.3 GB of the NVIDIA H100 80GB (PCIe)'s 80 GB, at ~35 tok/s (est.), with room for up to 64K context.
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NVIDIA H100 80GB (PCIe) Specs
| VRAM | 80 GB |
| Memory Bandwidth | 2000 GB/s |
GLM-5.1 72B on the NVIDIA H100 80GB (PCIe): VRAM by quantization
| Quant | VRAM needed | Fits 80 GB? | Max context | Whole PC |
|---|---|---|---|---|
| F16 | 147.2 GB | ✗ No | — | — |
| Q8_0 | 79.7 GB | ✓ Yes | 8K | — |
| Q6_K | 62.3 GB | ✓ Yes | 64K | — |
| Q5_K_M | 54.2 GB | ✓ Yes | 64K | — |
| Q4_K_M | 46.7 GB | ✓ Yes | 64K | — |
| Q3_K_M | 33.9 GB | ✓ Yes | 64K | — |
| Q2_K | 26.9 GB | ✓ Yes | 64K | — |
Assumes an 8K-token context with an f16 KV cache, on an estimated architecture — this model publishes no config we can read. A longer window needs more; a quantized KV cache needs less. “Max context” is the largest window that still fits in 80 GB. Figures are estimates from parameter count, quantization and memory bandwidth — the analyzer lets you tune KV-cache quant and context.
Context costs VRAM too. At Q4_K_M on the NVIDIA H100 80GB (PCIe): 8K 46.7 GB · 32K 53.9 GB · 125K 82 GB ✗. Past 125K it no longer fits 80 GB — a q8_0 KV cache buys roughly half of that back, which the calculator will price for you.
No compatible GPU? GLM-5 / GLM-5.1 on 8 GB of system RAM, CPU only: runs, but it is tight.
GLM-5 / GLM-5.1 Sizes That Fit the NVIDIA H100 80GB (PCIe) (at 8K context)
| GLM-5.1 72B | Q4_K_M · 46.7 GB at 8K context · ~35 tok/s (est.) |
| GLM-5 32B | Q4_K_M · 22 GB at 8K context · ~71 tok/s (est.) |
| GLM-5 9B | Q4_K_M · 7.4 GB at 8K context · ~172 tok/s (est.) |
At 2 hrs/day, buying (~$25,000) beats renting at $0.77/hr after about 45.1 years.
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Cloud rates verified 2026-07 — estimates, and marketplace prices vary. Buying price is GPU MSRP only, not a full PC.
FAQ
GLM-5 / GLM-5.1 on the NVIDIA H100 80GB (PCIe) — does it fit?
Yes, comfortably — GLM-5.1 72B at Q4_K_M needs 46.7 GB at 8K context (43.5 GB weights + 3.2 GB KV cache/overhead), leaving ~33.3 GB of the NVIDIA H100 80GB (PCIe)'s 80 GB, at ~35 tok/s (est.), with room for up to 64K context.
Which GLM-5 / GLM-5.1 variant fits best on the NVIDIA H100 80GB (PCIe)?
GLM-5.1 72B at Q4_K_M quantization needs 46.7 GB at 8K context (43.5 GB weights + 3.2 GB KV cache/overhead), estimated ~35 tokens/sec, up to 64K context.
GLM-5 / GLM-5.1 on Other GPUs
- GLM-5 / GLM-5.1 on NVIDIA A100 80GB (PCIe)
- GLM-5 / GLM-5.1 on Apple M2 Max
- GLM-5 / GLM-5.1 on Apple M1 Max
- GLM-5 / GLM-5.1 on Apple M5 Pro
- GLM-5 / GLM-5.1 on NVIDIA RTX PRO 6000 Blackwell
Popular Models on the NVIDIA H100 80GB (PCIe)
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