CanMyPCRunAILocal AI compatibility
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AMD · 20GB VRAM

What AI models can a Radeon RX 7900 XT run?

A Radeon RX 7900 XT has 20GB of VRAM. Checked against 228 models from the Ollama library, 174 run fully on the GPU at 4K context and 30 more run with part of the model in system RAM.

174

run well

30

with trade-offs

228

models tested

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Best AI models for a Radeon RX 7900 XT

Largest first — these fit entirely in 20GB of VRAM at 4K context, so the whole model is GPU-accelerated.

Models that run well on a Radeon RX 7900 XT
ModelBuildMemory neededVerdict
mistral-smallMistral AI22B~18.2 GBGood fit
codestralMistral AI22B~18.2 GBGood fit
solar-proUpstage22B~18.1 GBGood fit
phi4-reasoningMicrosoft14B~15.2 GBGood fit
deepseek-coder-v2DeepSeek AI16B~14.2 GBExcellent fit
deepseek-v2DeepSeek AI16B~14.2 GBExcellent fit
phi4Microsoft14B~12.4 GBExcellent fit
everythinglmOllama Library13B~10.9 GBExcellent fit
nexusravenOllama Library13B~10.9 GBExcellent fit
open-orca-platypus2Ollama Library13B~10.9 GBExcellent fit
codeupOllama Library13B~10.9 GBExcellent fit
wizard-vicunaOllama Library13B~10.9 GBExcellent fit
wizardlm-uncensoredOllama Library13B~10.9 GBExcellent fit
llama3.2-visionMeta AI11B~10.8 GBExcellent fit
mistral-nemoMistral AI12B~10.3 GBExcellent fit
gemma4Google DeepMinde2b-it-q4_K_M~9.9 GBExcellent fit
falcon2TII11B~9.5 GBExcellent fit
deepseek-ocrDeepSeek AI3B~9.3 GBExcellent fit
nous-hermes2Ollama Library10.7B~9.0 GBExcellent fit
solarUpstage10.7B~9.0 GBExcellent fit
codegeex4Zhipu AI9B~8.7 GBExcellent fit
glm4Zhipu AI9B~8.7 GBExcellent fit
ornith-1.5Ollama Library9B~7.9 GBExcellent fit
ornithOllama Library9B~7.9 GBExcellent fit
gemma3nGoogle DeepMinde2b-it-q4_K_M~7.9 GBExcellent fit

Showing the 25 largest of 174 models that run well.

How these results were calculated

Each model is evaluated at 4K context against 20GB of VRAM, counting model weights, KV cache, compute buffers and runtime overhead, minus a reserve for the display and operating system. Download sizes come from the official Ollama registry.

These figures assume 32GB of system RAM and working GPU drivers. Your own machine may differ — RAM, free disk space and whether an acceleration backend is actually installed all change the answer, which is what the PC scan measures directly.

Radeon RX 7900 XT local AI — frequently asked questions

How many AI models can a Radeon RX 7900 XT run?
Out of 228 models in the Ollama library, 174 run fully on a Radeon RX 7900 XT's 20GB of VRAM at 4K context, and a further 30 run with part of the model offloaded to system RAM, more slowly.
What is the largest AI model a Radeon RX 7900 XT can run?
The heaviest build that fits entirely in VRAM is mistral-small:22b-instruct-2409-q4_K_M (22B parameters), needing about 18.2 GB of memory from a 12.4 GB download.
Is 20GB of VRAM enough for local AI?
20GB is enough for 174 of the 228 models tested here, which covers most general-purpose and coding assistants. Very large models still need either partial CPU offload or a card with more memory.

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