HARDWARE FIT CHECK โ€ข Meta Muse Spark Open (816B-A42B MoE) + NVIDIA GeForce RTX 5080 (16GB GDDR7)512.86 GB / 16 GB VRAM

Can I Run Meta Muse Spark Open (816B-A42B MoE) on NVIDIA GeForce RTX 5080 (16GB GDDR7)?

Full VRAM footprint analysis, tokens/sec generation benchmark, and copy-paste Ollama & vLLM runtime commands for running Meta Muse Spark Open (816B-A42B MoE) (816B) on NVIDIA GeForce RTX 5080 (16GB GDDR7) (16 GB).

โŒ Out of Memory (OOM) โ€” Exceeds Hardware VRAM512.86 GB (3205%)0 t/s

Model & Target Hardware

interactive
Frontier Multi-Step Agentic Reasoning & Native Multimodal
Meta Muse Spark Open (816B-A42B MoE) on NVIDIA GeForce RTX 5080 (16GB GDDR7)

โœ• Out of Memory โ€” Exceeds VRAM Capacity

โœ• OOM
Required VRAM
512.86 GB
3205% of hardware capacity (16 GB)
Est. Decode Speed
0 tok/s
42B active params @ 960 GB/s
Available Headroom
-496.86 GB
Needs +496.86 GB more VRAM
Memory Allocation & Headroom
512.86 GB allocated of 16 GB capacity
3205% utilized
Weights: 489.6 GB
KV: (32K): 5.37 GB
Overhead: 17.89 GB
Deficit: -496.86 GB
โšก Architecture & Throughput Transparency: Single-user decode speed (~0 tok/s) is memory-bandwidth bound at batch size = 1 on NVIDIA GeForce RTX 5080 (16GB GDDR7) (960 GB/s). Prompt prefill / TTFT (~0 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 muse-spark:816b

Quantization Precision Matrix

32K ctx โ€ข KV: Q8_0
QuantizationWeightsKV CacheTotal VRAMEst. SpeedFit Status
FP1616 bpw1632 GB5.37 GB1695.24 GB (10595%)0 t/sOOM
Q8_08.5 bpw864.96 GB5.37 GB901.35 GB (5633%)0 t/sOOM
Q6_K6.56 bpw669.12 GB5.37 GB698.66 GB (4367%)0 t/sOOM
Q5_K_M5.68 bpw579.36 GB5.37 GB605.76 GB (3786%)0 t/sOOM
Q4_K_M4.8 bpw489.6 GB5.37 GB512.86 GB (3205%)0 t/sOOM
FP44.25 bpw432.48 GB5.37 GB453.74 GB (2836%)0 t/sOOM
IQ3_XS3.3 bpw334.56 GB5.37 GB352.39 GB (2202%)0 t/sOOM

Local Hardware Configurations & Pricing

High-bandwidth VRAM specs and current market prices
Consumer GPU16 GB VRAM

NVIDIA GeForce RTX 5080 (16GB GDDR7)

Blazing fast 8Bโ€“14B coding models with FP4/Q6_K precision

960 GB/s360W TDP
Consumer GPU32 GB VRAM

NVIDIA GeForce RTX 5090 (32GB GDDR7)

Maximum tokens/sec on 27Bโ€“35B models & Blackwell FP4 quantization

1792 GB/s575W TDP
Consumer GPU24 GB VRAM

NVIDIA GeForce RTX 4090 (24GB GDDR6X)

The 24GB CUDA enthusiast standard for 14Bโ€“32B Q4_K_M models

1008 GB/s450W TDP
Multi-GPU Rig48 GB VRAM

2x NVIDIA RTX 3090 Dual Rig (48GB Total VRAM)

Best price-to-VRAM homelab rig for 70B Q4_K_M & Qwen 3.8 27B Q8

936 GB/s700W TDP

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