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README.md
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- benchmark
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- amd
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- rocm
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- gemma4
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- local-llm
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- linux
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- spanish
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- latam
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language:
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- es
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- en
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license: apache-2.0
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---
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#
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Benchmarks
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**This documentation doesn't exist in Spanish — for the LatAm community.**
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### Why this matters
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Most local AI guides assume:
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- NVIDIA GPU (CUDA)
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- Apple Silicon (macOS)
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- $1,500+ USD budget
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This repo documents that a **budget AMD GPU on Linux** running Gemma 4 — released April 2026 — outperforms a brand new Mac Mini M4 in decode speed, at a fraction of the cost.
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### Hardware
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| Component | Detail |
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|-----------|--------|
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| GPU | AMD RX 6700 XT 12GB (gfx1031) |
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| CPU | AMD Ryzen 5 5600G |
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| RAM | 16GB |
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| OS | Pop!_OS 24.04 LTS |
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| Ollama | 0.20.2 |
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| ROCm override | HSA_OVERRIDE_GFX_VERSION=10.3.0 |
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### Results (average of 3 runs)
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| Model | Prefill (tok/s) | Decode (tok/s) | VRAM | Status |
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|-------|----------------|----------------|------|--------|
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| gemma4:e2b | 1022.39 | 85.00 | ~2GB | ROCm ✅ full GPU |
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| gemma4:e4b | 697.91 | 57.34 | ~4GB | ROCm ✅ full GPU |
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| gemma4:26b | 157.94 | 10.70 | 12GB + RAM offload | ROCm ⚠️ partial |
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> **Note:** Prefill varies between runs due to KV cache warming.
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> Decode is the number that matters for user experience — very consistent.
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### Platform comparison (decode ~4B models)
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| Hardware | Decode tok/s | Price (approx USD) |
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|----------|--------------|--------------------|
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| **RX 6700 XT + ROCm (this repo)** | **57-85** | existing hardware |
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| Mac Mini M4 16GB | 25-40 | ~$600 new |
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| RTX 3070 12GB | 50-80 | ~$500 used |
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**The RX 6700 XT doubles the Mac Mini M4 16GB in decode speed for models that fit in VRAM.**
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### The gfx1031 problem
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The RX 6700 XT reports `gfx1031` architecture, but ROCm doesn't officially support it.
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Without the override, Ollama falls back to CPU (~3-5 tok/s).
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**Fix:**
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```bash
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sudo mkdir -p /etc/systemd/system/ollama.service.d
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sudo tee /etc/systemd/system/ollama.service.d/rocm-fix.conf << 'CONF'
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[Service]
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Environment="HSA_OVERRIDE_GFX_VERSION=10.3.0"
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Environment="ROCR_VISIBLE_DEVICES=0"
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CONF
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sudo systemctl daemon-reload
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sudo systemctl restart ollama
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```
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**Verify it worked:**
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```bash
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journalctl -u ollama -n 10 --no-pager | grep "AMD Radeon"
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# Expected output:
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# description="AMD Radeon RX 6700 XT" total="12.0 GiB" available="11.1 GiB"
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```
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### Full setup
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```bash
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# 1. Install Ollama
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curl -fsSL https://ollama.com/install.sh | sh
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# 2. Apply ROCm fix (see above)
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# 3. Pull models
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ollama pull gemma4:e2b # 2B - fast, fits easily
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ollama pull gemma4:e4b # 4B - great quality, fits in VRAM
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ollama pull gemma4:26b # 26B - requires RAM offload on 12GB
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# 4. Run
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ollama run gemma4:e4b "Hello, what is MLOps?"
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```
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### Run the benchmark yourself
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```bash
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chmod +x bench_gemma4.sh
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./bench_gemma4.sh
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```
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Runs 3 iterations per model, saves results to `gemma4_benchmark_results.md`.
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---
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## Versión en Español
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### Por qué esto importa
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La mayoría de guías de AI local asumen:
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- GPU NVIDIA (CUDA)
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- Apple Silicon (macOS)
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- Presupuesto de $1,500 USD o más
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Este repo documenta que una **GPU AMD de segunda mano en Linux** corriendo Gemma 4 (lanzada en abril 2026) supera en velocidad a un Mac Mini M4 nuevo, a una fracción del costo.
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### Hardware
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| Componente | Detalle |
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|------------|---------|
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| GPU | AMD RX 6700 XT 12GB (gfx1031) |
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| CPU | AMD Ryzen 5 5600G |
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| RAM | 16GB |
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| OS | Pop!_OS 24.04 LTS |
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| Ollama | 0.20.2 |
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| Override ROCm | HSA_OVERRIDE_GFX_VERSION=10.3.0 |
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### Resultados (promedio de 3 corridas)
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| Modelo | Prefill (tok/s) | Decode (tok/s) | VRAM | Estado |
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|--------|----------------|----------------|------|--------|
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| gemma4:e2b | 1022.39 | 85.00 | ~2GB | ROCm ✅ GPU completa |
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| gemma4:e4b | 697.91 | 57.34 | ~4GB | ROCm ✅ GPU completa |
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| gemma4:26b | 157.94 | 10.70 | 12GB + offload a RAM | ROCm ⚠️ parcial |
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> **Nota:** El prefill varía entre corridas por el KV cache warming.
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> El decode es el número relevante para experiencia de usuario y es muy consistente.
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### Comparativa vs otras plataformas (decode modelos ~4B)
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| Hardware | Decode tok/s | Precio aprox MXN |
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|----------|-------------|-----------------|
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| **RX 6700 XT + ROCm (este repo)** | **57-85** | hardware existente |
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| Mac Mini M4 16GB | 25-40 | ~$23,000 MXN nuevo |
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| RTX 3070 12GB | 50-80 | ~$10,000 MXN usado |
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**La RX 6700 XT dobla en velocidad al Mac Mini M4 16GB en modelos que caben en VRAM.**
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### El problema del gfx1031
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La RX 6700 XT reporta arquitectura `gfx1031` pero ROCm no la tiene en su lista de soporte oficial.
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Sin el override, Ollama cae a CPU (~3-5 tok/s).
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**Fix:**
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```bash
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sudo mkdir -p /etc/systemd/system/ollama.service.d
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sudo tee /etc/systemd/system/ollama.service.d/rocm-fix.conf << 'CONF'
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[Service]
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Environment="HSA_OVERRIDE_GFX_VERSION=10.3.0"
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Environment="ROCR_VISIBLE_DEVICES=0"
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CONF
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sudo systemctl daemon-reload
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sudo systemctl restart ollama
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```
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**Verificar que funcionó:**
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```bash
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journalctl -u ollama -n 10 --no-pager | grep "AMD Radeon"
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# Output esperado:
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# description="AMD Radeon RX 6700 XT" total="12.0 GiB" available="11.1 GiB"
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```
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### Setup completo
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```bash
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# 1. Instalar Ollama
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curl -fsSL https://ollama.com/install.sh | sh
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# 2. Aplicar fix de ROCm (ver arriba)
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# 3. Descargar modelos
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ollama pull gemma4:e2b # 2B - rápido, cabe fácil
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ollama pull gemma4:e4b # 4B - buena calidad, cabe en VRAM
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ollama pull gemma4:26b # 26B - requiere offload a RAM en 12GB
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# 4. Correr
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ollama run gemma4:e4b "Hola, explica qué es MLOps"
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```
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### Correr el benchmark tú mismo
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```bash
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chmod +x bench_gemma4.sh
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./bench_gemma4.sh
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```
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Corre 3 iteraciones por modelo y guarda los resultados en `gemma4_benchmark_results.md`.
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### Modelos probados
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| Modelo | Parámetros | Tipo | ¿Cabe en 12GB? |
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|--------|-----------|------|----------------|
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| gemma4:e2b | 2B | Dense | ✅ GPU completa |
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| gemma4:e4b | 4B | Dense | ✅ GPU completa |
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| gemma4:26b | 26B (4B activos, MoE) | MoE | ⚠️ offload parcial |
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---
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## About / Sobre este repo
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Hecho en CDMX con hardware de segunda mano y software libre.
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[](https://github.com/G10hdz)
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[](https://www.linkedin.com/in/mayte-giovanna-hernandez-rios/)
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- benchmark
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- amd
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- rocm
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- local-llm
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- linux
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language:
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- es
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- en
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license: apache-2.0
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---
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# AMD ROCm Benchmarks — Positronica Labs
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Benchmarks de modelos locales corriendo en GPU AMD con ROCm en Linux.
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Para la comunidad LatAm que corre AI sin Apple ni NVIDIA.
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## Benchmarks disponibles
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| Carpeta | Modelos | Descripción |
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|---------|---------|-------------|
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| [gemma4/](gemma4/README.md) | Gemma 4 E2B, E4B, 26B | Gemma 4 día 3 del lanzamiento |
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| [all_models/](all_models/README.md) | 11 modelos | Master benchmark con guía de uso |
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## Hardware base
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AMD RX 6700 XT 12GB + Ryzen 5 5600G + 16GB RAM + Pop!_OS 24.04
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[](https://github.com/G10hdz)
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[](https://www.linkedin.com/in/mayte-giovanna-hernandez-rios/)
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