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openai/gpt-oss-20b

LM-STUDIO GGUF

gpt-oss · 20B · MXFP4

Not Rec.

Jul 5, 2026 · AMD Ryzen 7 7800X3D 8-Core Processor

nemotron-3-nano:4b

OLLAMA GGUF

nemotron_h · 4.0B · Q4_K_M

Excellent

Oct 12, 2026 · AMD Ryzen 5 5500

Global Score
84 vs 95
Hardware Fit
65 vs 99
Quality Score
92 vs 93

Hardware

openai/gpt-oss-20b nemotron-3-nano:4b
MachineASUSMicrosoft WSL
CPUAMD Ryzen 7 7800X3D 8-Core ProcessorAMD Ryzen 5 5500
Cores1612
RAM31 GB8 GB
GPUNVIDIA GeForce RTX 4090, RaphaelIntegrated / Unknown
OScachyos rollingUbuntu 26.04.1 LTS
Archx64x64
Power Modeperformanceunknown

Performance

openai/gpt-oss-20b nemotron-3-nano:4b
Tokens/sec221.5107.6
First chunk5 ms361 ms
TTFT30.0 s1.1 s
Load timeN/A7.9 s
Memory usage21.1 GB2.6 GB
Memory %69%34%

HW Fit Score Breakdown

openai/gpt-oss-20b

Speed
50/50
TTFT
0/20
Memory
15/30

nemotron-3-nano:4b

Speed
50/50
TTFT
20/20
Memory
29/30

Quality

openai/gpt-oss-20b

Reasoning
19/20
Coding
15/20
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

nemotron-3-nano:4b

Reasoning
19/20
Coding
16/20
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

Run yours and compare

$ npm install -g metrillm@latest
$ metrillm

Requires Node 20+ and Ollama or LM Studio running

Or run without installing: npx metrillm@latest