HARDWARE BENCHMARK & VRAM ENVELOPE โข DATACENTER CLOUD GPU80 GB VRAM โข 3350 GB/s
What Models Can Run on NVIDIA H100 SXM (80GB HBM3 Cloud GPU)?
80 GB VRAM3350 GB/s Bandwidth700W TDPMSRP: $28,000Cloud: $2.39/hr on RunPod
NVIDIA H100 SXM (80GB HBM3 Cloud GPU) provides 80 GB of usable memory with 3350 GB/s memory bandwidth at 700W TDP. Production vLLM high-concurrency serving & 70B FP8 inference.
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Runs 100% in GPU VRAM (Optimal Headroom)21.93 GB (27%)~139 t/s
Qwen 3.8 27B Instruct on NVIDIA H100 SXM (80GB HBM3 Cloud GPU)
โ Fits Comfortably in VRAM
โ FITS IN VRAM
Required VRAM
21.93 GB
27% of hardware capacity (80 GB)Est. Decode Speed
~139 tok/s
Dense model @ 3350 GB/sAvailable Headroom
+58.07 GB
Safe for OS display & full contextMemory Allocation & Headroom
21.93 GB allocated of 80 GB capacity
27% utilized
Weights: 16.32 GB
KV: (32K): 4.29 GB
Overhead: 1.32 GB
Free Headroom: +58.07 GB
โก Architecture & Throughput Transparency: Single-user decode speed (~139 tok/s) is memory-bandwidth bound at batch size = 1 on NVIDIA H100 SXM (80GB HBM3 Cloud GPU) (3350 GB/s). Prompt prefill / TTFT (~2,016 tok/s) is compute-bound and utilizes GPU Tensor cores. Actual latency varies with FlashAttention-2 and runtime engine (Ollama/vLLM/llama.cpp).
OLLAMA_FLASH_ATTENTION=1 OLLAMA_KV_CACHE_TYPE=q8_0 ollama run qwen3.8:27bCloud Instance Options for Qwen 3.8 27B Instruct
On-DemandDeploy this model on an on-demand cloud GPU without local hardware constraints or power usage:
RunPod Cloud GPUsBest 1-Click Ollama & vLLM
$0.34/hr (RTX 4070 Ti) โ $2.39/hr (H100)Vast.ai GPU MarketplaceCheapest Dual RTX 3090 / 4090
$0.18/hr (RTX 3060) โ $0.55/hr (RTX 4090)Lambda GPU CloudEnterprise 8x H100 Clusters
$1.99/hr (GH200 / H100)Quantization Precision Matrix
32K ctx โข KV: Q8_0| Quantization | Weights | KV Cache | Total VRAM | Est. Speed | Fit Status |
|---|---|---|---|---|---|
| FP1616 bpw | 54.4 GB | 4.29 GB | 61.34 GB (77%) | ~44 t/s | FITS |
| Q8_08.5 bpw | 28.83 GB | 4.29 GB | 34.88 GB (44%) | ~81 t/s | FITS |
| Q6_K6.56 bpw | 22.3 GB | 4.29 GB | 28.12 GB (35%) | ~104 t/s | FITS |
| Q5_K_M5.68 bpw | 19.31 GB | 4.29 GB | 25.03 GB (31%) | ~119 t/s | FITS |
| Q4_K_M4.8 bpw | 16.32 GB | 4.29 GB | 21.93 GB (27%) | ~139 t/s | FITS |
| FP44.25 bpw | 14.42 GB | 4.29 GB | 19.96 GB (25%) | ~156 t/s | FITS |
| IQ3_XS3.3 bpw | 11.15 GB | 4.29 GB | 16.58 GB (21%) | ~199 t/s | FITS |
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All Open-Weights Models Tested on NVIDIA H100 SXM (80GB HBM3 Cloud GPU) (Q4_K_M @ 32K Context)
Standard Q4_K_M precision with 32K context window and Q8_0 KV cache
| Model | Architecture | Total VRAM Needed | Headroom | Est. Decode Speed | Compatibility | Detailed Config |
|---|---|---|---|---|---|---|
| Qwen 3.8 27B Instruct Alibaba Cloud | 27.2B Dense | 21.93 GB(27%) | +58.07 GB | ~139 tok/s | โ FITS | Configure CLI โ |
| Qwen 3.6 35B-A3B MoE Alibaba Cloud | 35B MoE | 24.1 GB(30%) | +55.9 GB | ~1095 tok/s | โ FITS | Configure CLI โ |
| DeepSeek-V4.1-Flash (552B Engram MoE) DeepSeek | 552B MoE | 345.59 GB(432%) | -265.59 GB | 0 (OOM) | โ OOM | Configure CLI โ |
| Meta Muse Spark Open (816B-A42B MoE) Meta AI | 816B MoE | 512.86 GB(641%) | -432.86 GB | 0 (OOM) | โ OOM | Configure CLI โ |
| Google Gemma 4 26B MoE Google | 26.4B MoE | 20.23 GB(25%) | +59.77 GB | ~733 tok/s | โ FITS | Configure CLI โ |
| Google Gemma 4 E4B (Edge 4B) Google | 4.1B Dense | 4.24 GB(5%) | +75.76 GB | ~895 tok/s | โ FITS | Configure CLI โ |
| DeepSeek-R1 Distill Qwen 32B DeepSeek | 32.8B Dense | 25.41 GB(32%) | +54.59 GB | ~117 tok/s | โ FITS | Configure CLI โ |
| DeepSeek-R1 Distill Qwen 14B DeepSeek | 14.8B Dense | 13.16 GB(16%) | +66.84 GB | ~249 tok/s | โ FITS | Configure CLI โ |
| Meta Llama 4 Scout (109B-A17B MoE) Meta AI | 109B MoE | 71.66 GB(90%) | +8.34 GB | ~219 tok/s | โก TIGHT FIT | Configure CLI โ |
| Meta Llama 3.3 70B Instruct Meta AI | 70.6B Dense | 49.96 GB(62%) | +30.04 GB | ~56 tok/s | โ FITS | Configure CLI โ |
| Meta Llama 3.1 8B Instruct Meta AI | 8B Dense | 7.87 GB(10%) | +72.13 GB | ~452 tok/s | โ FITS | Configure CLI โ |
| Microsoft Phi-4 Mini 3.8B Microsoft | 3.8B Dense | 3.92 GB(5%) | +76.08 GB | ~972 tok/s | โ FITS | Configure CLI โ |