How fast will Ornith 1.5 35B A3B feel on the NVIDIA DGX Spark 128GB?

Ornith 1.5 35B A3B on the NVIDIA DGX Spark 128GB

Ornith 1.5 35B A3B is a 35.95B-parameter mixture-of-experts model (3B active per token). At Q4_K_M it needs about 22.5 GB of memory. The NVIDIA DGX Spark 128GB has 119 GB usable, so it fits entirely in memory. Expect about 47 tokens/sec (40–54), with the first token after 0.3 s for a short prompt. This estimate is projected from the hardware specs; no benchmarks exist yet.

Speed by quantization

Quantization	File size	Memory	Generation	First token	Source
Q4_K_M	21.7 GB	Fits	47 tok/s	0.3 s	Projected
Q8_0	37.8 GB	Fits	27 tok/s	0.3 s	Projected
FP16	72.0 GB	Fits	14 tok/s	0.3 s	Projected

Ornith 1.5 35B A3B on other hardware

H200 141GB (cloud) · 824 tok/s at Q4_K_M
H100 80GB (cloud) · 575 tok/s at Q4_K_M
AMD RX 7900 XTX 24GB · 363 tok/s at Q4_K_M
A100 80GB (cloud) · 350 tok/s at Q4_K_M
Mac Studio M5 Ultra 512GB · 313 tok/s at Q4_K_M
NVIDIA RTX 5090 32GB · 308 tok/s at Q4_K_M
NVIDIA RTX PRO 6000 96GB · 308 tok/s at Q4_K_M
Mac Studio M3 Ultra 512GB · 213 tok/s at Q4_K_M
NVIDIA RTX 4090 24GB · 213 tok/s at Q4_K_M
AMD Radeon AI PRO R9700 32GB · 204 tok/s at Q4_K_M
NVIDIA RTX 3090 24GB · 198 tok/s at Q4_K_M
MacBook Pro M5 Max 128GB · 160 tok/s at Q4_K_M
Mac Studio M4 Max 128GB · 142 tok/s at Q4_K_M
AMD RX 7900 XT 20GB · 131 tok/s at Q4_K_M
MacBook M3 Max 48GB · 104 tok/s at Q4_K_M
AMD Ryzen AI Max+ 395 128GB (Strix Halo) · 81 tok/s at Q4_K_M
AMD RX 9070 XT 16GB · 80 tok/s at Q4_K_M
MacBook Pro M5 Pro 48GB · 80 tok/s at Q4_K_M
NVIDIA RTX 5080 16GB · 76 tok/s at Q4_K_M
NVIDIA RTX 5070 Ti 16GB · 75 tok/s at Q4_K_M
Mac Mini M4 Pro 64GB · 71 tok/s at Q4_K_M
NVIDIA RTX 4070 Ti Super 16GB · 69 tok/s at Q4_K_M
Intel Arc Pro B70 32GB · 65 tok/s at Q4_K_M
NVIDIA RTX 5060 Ti 16GB · 60 tok/s at Q4_K_M
NVIDIA RTX 4070 12GB · 52 tok/s at Q4_K_M
NVIDIA RTX 3060 12GB · 47 tok/s at Q4_K_M
CPU-only (Ryzen 9 9950X, 96GB DDR5) · 33 tok/s at Q4_K_M
MacBook M4 Pro 24GB · won't run
MacBook M2 Pro 16GB · won't run

Other models on the NVIDIA DGX Spark 128GB

Qwen 3.6/3.8 27B · 6.5 tok/s at Q4_K_M
GLM-5.3 Flash · 18 tok/s at UD-Q2_K_XL
GPT-OSS 20B · 53 tok/s at MXFP4
Gemma 4 26B A4B · 44 tok/s at Q4_K_M
Qwen 3.5/3.6 35B A3B · 60 tok/s at Q4_K_M
DeepSeek V4 Flash · 22 tok/s at UD-IQ3_S
GPT-OSS 120B · 40 tok/s at MXFP4
Gemma 4 31B · 6.0 tok/s at Q4_K_M
Llama 3.1 8B · 35 tok/s at Q4_K_M
Qwen 3.5 9B · 15 tok/s at Q4_K_M
DeepSeek R1 Distill 14B · 19 tok/s at Q4_K_M
Ornith 1.5 9B · 15 tok/s at Q4_K_M
Muse Glimmer 30B · 4.3 tok/s at Q4_K_M
Qwen3 30B A3B · 42 tok/s at Q4_K_M

All models on the NVIDIA DGX Spark 128GB · Ornith 1.5 35B A3B on all hardware

Estimates for a short prompt on a single device. Measured numbers come from community benchmarks (r/LocalLLaMA, localscore.ai and more); others are derived from similar setups or projected from specs. Open source on GitHub.