Advisor / Hardware / NVIDIA DGX Spark 128GB

Best local LLMs for NVIDIA DGX Spark 128GB

NVIDIA DGX Spark 128GB. Memory-fit math with KV cache, speeds labelled by how they were obtained, and commands you can paste.

108.3 GBusable for model + KV cache
273 GB/smemory bandwidth
19measured data points on file
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Best for Coding · 16k context

ModelQuantFitMemorySpeed (generation)
gpt-oss 120BQ8_0fits fully64.0 GB~57 tok/s scaled from measured src
Qwen3-Coder 30B-A3BQ8_0fits fully34.1 GB~61 tok/s measured src
Qwen3.6 35B-A3BQ8_0fits fully37.3 GB~49 tok/s measured src
Gemma 4 26B-A4BQ8_0fits fully27.9 GB~53 tok/s scaled from measured src
Qwen3.5 9BQ8_0fits fully10.1 GB~17 tok/s scaled from measured src
llama.cpp · top pick
llama-server -hf unsloth/gpt-oss-120b-GGUF:Q8_0 -c 16384 -fa on --jinja -ngl 99
ollama · top pick
OLLAMA_CONTEXT_LENGTH=16384 ollama run hf.co/unsloth/gpt-oss-120b-GGUF:Q8_0

Best for Chat / general · 16k context

ModelQuantFitMemorySpeed (generation)
gpt-oss 120BQ8_0fits fully64.0 GB~57 tok/s scaled from measured src
Gemma 4 12BQ6_Kfits fully10.4 GB~17 tok/s scaled from measured src
Qwen3.6 35B-A3BQ8_0fits fully37.3 GB~49 tok/s measured src
Qwen3-Coder 30B-A3BQ8_0fits fully34.1 GB~61 tok/s measured src
Gemma 4 26B-A4BQ8_0fits fully27.9 GB~53 tok/s scaled from measured src
llama.cpp · top pick
llama-server -hf unsloth/gpt-oss-120b-GGUF:Q8_0 -c 16384 -fa on --jinja -ngl 99
ollama · top pick
OLLAMA_CONTEXT_LENGTH=16384 ollama run hf.co/unsloth/gpt-oss-120b-GGUF:Q8_0

Best for Vision · 16k context

ModelQuantFitMemorySpeed (generation)
Gemma 4 12BQ6_Kfits fully10.4 GB~17 tok/s scaled from measured src
Qwen3.6 35B-A3BQ8_0fits fully37.3 GB~49 tok/s measured src
Gemma 4 26B-A4BQ8_0fits fully27.9 GB~53 tok/s scaled from measured src
Qwen3.5 9BQ8_0fits fully10.1 GB~17 tok/s scaled from measured src
Qwen3-VL 8BQ8_0fits fully11.1 GB~19 tok/s scaled from measured src
llama.cpp · top pick
llama-server -hf unsloth/gemma-4-12b-it-GGUF:Q6_K -c 16384 -fa on --jinja -ngl 99
ollama · top pick
OLLAMA_CONTEXT_LENGTH=16384 ollama run hf.co/unsloth/gemma-4-12b-it-GGUF:Q6_K

All 13 models that fit, fastest first · 16k context

Click a column header to sort. 11 of 13 speeds here are measured or scaled from measured; the rest are bandwidth estimates. Filter by use case, speed source, fit, license and more in the interactive advisor →

ModelParamsQuantFitMemoryTok/sSource
gpt-oss 20B20.91B MoEQ8_0fits fully12.5 GB~86scaled from measured
Qwen3-Coder 30B-A3B30.53B MoEQ8_0fits fully34.1 GB~61measured
gpt-oss 120B116.83B MoEQ8_0fits fully64.0 GB~57scaled from measured
Gemma 4 26B-A4B25.81B MoEQ8_0fits fully27.9 GB~53scaled from measured
Qwen3.5 4B4.66BQ8_0fits fully5.1 GB~50scaled from measured
Qwen3.6 35B-A3B35.95B MoEQ8_0fits fully37.3 GB~49measured
Qwen3-VL 8B8.77BQ8_0fits fully11.1 GB~19scaled from measured
Qwen3.5 9B9.65BQ8_0fits fully10.1 GB~17scaled from measured
GLM-4.5-Air110.47B MoEQ4_K_Mfits fully76.1 GB~17scaled from measured
Gemma 4 12B11.96BQ6_Kfits fully10.4 GB~17scaled from measured
Qwen3.6 27B27.78BQ4_K_Mfits fully18.1 GB~13estimated
Gemma 4 31B31.27BQ4_K_Mfits fully20.5 GB~12estimated
Mistral Small 3.2 24B24.01BQ4_K_Mfits fully17.0 GB~11scaled from measured

Long context on this hardware · up to 1M tokens

Largest context whose KV cache still fits next to the weights (same placement as the 16k result, KV types f16 / q8_0 / q4_0). Models are capped at their verified maximum; extended means beyond the native maximum using YaRN, only listed where the model card documents it. Long context needs flash attention (-fa on, already in the commands) and a lot of memory; a quantized KV cache saves memory but can cost accuracy. Speed at depth is an estimate (penalty fitted to measured depth runs up to 128k).

Try it in the advisor: 128k · 256k · 512k · 1M

ModelNative maxMax ctx f16Max ctx q8_0Max ctx q4_0Est. tok/s at max f16 ctx
Qwen3.5 4B Q8_0256k1M extended1M extended1M extended~8 estimated
Qwen3.6 35B-A3B Q8_0256k1M extended1M extended1M extended~9 estimated
Qwen3.5 9B Q8_0256k1M extended1M extended1M extended~5 estimated
Qwen3.6 27B Q4_K_M256k1M extended1M extended1M extended~3 estimated
Qwen3-Coder 30B-A3B Q8_0256k512k extended1M extended1M extended~5 estimated
Qwen3-VL 8B Q8_0256k512k extended1M extended1M extended~3 estimated
Gemma 4 26B-A4B Q8_0256k256k256k256k~27 estimated
Gemma 4 12B Q6_K256k256k256k256k~12 estimated
Gemma 4 31B Q4_K_M256k256k256k256k~6 estimated
gpt-oss 20B Q8_0128k128k128k128k~41 estimated
gpt-oss 120B Q8_0128k128k128k128k~25 estimated
GLM-4.5-Air Q4_K_M128k128k128k128k~5 estimated
Mistral Small 3.2 24B Q4_K_M128k128k128k128k~6 estimated
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Open the interactive advisor with this hardware →

Speeds marked measured are medians of real runs (short-context generation) from these sources; scaled from measured means a measurement of a same-size or same-model-different-quant run, scaled by bytes read; estimated comes from memory bandwidth (spec source: https://www.nvidia.com/en-us/products/workstations/dgx-spark/) × an efficiency factor of 0.81 calibrated to measured runs on this hardware. 19 measured data points on file for this hardware · submit your benchmark. Memory size on this page is an example configuration; check what your machine has. Model data last verified 2026-10-14. Ranking = fits and fast enough first, then larger; not a quality benchmark.

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