openai/gpt-oss-20b

LM-STUDIO MLX

gpt_oss · 20B · MXFP4

Not Rec.

Jul 17, 2026 · Apple M5 Max

GPT-20B:20b

OLLAMA GGUF

gptoss · 20.9B · MXFP4

Excellent

Aug 22, 2026 · NVIDIA RTX Spark N1X (6144-core GPU, 20-core ) RTX Spark N1X (6144-core GPU, 20-core )

Global Score

83 vs 93

Hardware Fit

80 vs 91

Quality Score

84 vs 94

Hardware

openai/gpt-oss-20b GPT-20B:20b

MachineMacBook ProHP HyperX OMEN Transcend Gaming Laptop 14-ga0xxx5CD612DXML

CPUApple M5 MaxNVIDIA RTX Spark N1X (6144-core GPU, 20-core ) RTX Spark N1X (6144-core GPU, 20-core )

Cores1820

RAM64 GB55 GB

GPUApple M5 MaxNVIDIA RTX Spark N1X (6144-core Blackwell RTX GPU), NVIDIA NPU

OSmacOS 27.0Microsoft Windows 11 Pro 10.0.28000

Archarm64arm64

Power Modebalancedbalanced

Performance

openai/gpt-oss-20b GPT-20B:20b

Tokens/sec131.757.8

First chunk7 ms203 ms

TTFT30.0 s3.0 s

Load timeN/A19.2 s

Memory usage15.8 GB12.0 GB

Memory %25%22%

HW Fit Score Breakdown

openai/gpt-oss-20b

Speed

50/50

TTFT

0/20

Memory

30/30

GPT-20B:20b

Speed

50/50

TTFT

11/20

Memory

30/30

Quality

openai/gpt-oss-20b

Reasoning

18/20

Coding

13/20

Instruction

14/20

Structured

14/15

Math

15/15

Multilingual

10/10

Reasoning: Strong Coding: Adequate Instruction Following: Adequate Structured Output: Strong Math: Strong Multilingual: Strong

GPT-20B:20b

Reasoning

19/20

Coding

17/20

Instruction

18/20

Structured

15/15

Math

15/15

Multilingual

10/10

Reasoning: Strong Coding: Strong Instruction Following: Strong Structured Output: Strong Math: Strong Multilingual: Strong

View openai/gpt-oss-20b details | View GPT-20B:20b details

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