UNIT · AMD · GPU
16 GB VRAMenthusiastReviewed November 2026

AMD Radeon RX 6900 XT

No editorial image yet — generic vendor mark shown. Credentials in spec table below.

RDNA 2 flagship at its 2020 launch; the RX 6950 XT followed in 2022. 16 GB VRAM at 512 GB/s, more compute than the 6800 XT. AMD does not list this card as supported for ROCm, though Ollama lists it under its ROCm backend on Linux. Comfortable for any 7B/13B + 32B Q4 with offload.

Released 2020·Launch MSRP $999 (2020) · Now sells well below its launch price on the used market.·512 GB/s memory bandwidth
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AMD Radeon RX 6900 XT
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RUNLOCALAI SCORE
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302/ 1000
CC-tier
Estimated
Throughput
148/ 500
VRAM-fit
140/ 200
Ecosystem
130/ 200
Efficiency
14/ 100

Sub-scores sum to 432 / 1000. Headline = 432 × 0.70 (Estimated-confidence discount) = 302. This is an algorithmic performance-tier score — distinct from, and often lower than, the editorial “Our verdict” below, which weighs value and real-world fit (especially for hardware we haven’t measured yet). How scoring works →

Extrapolated from 512 GB/s bandwidth — 51.2 tok/s estimated. No measured benchmarks yet.

WORKLOAD FIT
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Plain-English: Comfortable at 14B and below — snappy enough for a coding agent.

7B chat✓
Comfortable
14B chat✓
Comfortable
32B chat✗
Doesn't fit
70B chat✗
Doesn't fit
Coding agent✓
Comfortable
Vision (≤8B VLM)~
Tight
Long context (32K)✓
Comfortable
✓Comfortable — fits with headroom
~Tight — works, no slack
△Marginal — needs aggressive quant
✗Doesn't fit usefully

Verdicts extrapolated from catalog VRAM + bandwidth + ecosystem flags. Hover any chip for the rationale. Want measured numbers? Submit your own run with runlocalai-bench --submit.

BLK · OVERVIEW

Overview

RDNA 2 flagship at its 2020 launch; the RX 6950 XT followed in 2022. 16 GB VRAM at 512 GB/s, more compute than the 6800 XT. AMD does not list this card as supported for ROCm, though Ollama lists it under its ROCm backend on Linux. Comfortable for any 7B/13B + 32B Q4 with offload.

Retailers we'd check:Amazon

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BLK · SPECS

Specs

VRAM16 GB
Power draw (peak)300 W
Released2020
MSRP$999
Backends
ROCm
Vulkan

Models that fit

Open-weight models small enough to run on AMD Radeon RX 6900 XT with usable context.

all-MiniLM-L6-v2
0.022B · other · fits by VRAM, no benchmark yet
Nomic Embed Text v1.5
0.137B · other · fits by VRAM, no benchmark yet
Kokoro 82M
0.082B · other · fits by VRAM, no benchmark yet
Llama 3.1 8B Instruct
8B · llama · fits by VRAM, no benchmark yet
BGE Large EN v1.5
0.335B · other · fits by VRAM, no benchmark yet
Qwen 3 0.6B
0.6B · qwen · fits by VRAM, no benchmark yet
all-mpnet-base-v2
0.109B · other · fits by VRAM, no benchmark yet
XTTS v2
0.46B · other · fits by VRAM, no benchmark yet

Frequently asked

What models can AMD Radeon RX 6900 XT run?

With 16GB VRAM, the AMD Radeon RX 6900 XT runs models up to 14B in 4-bit, or 7B at higher quantizations. See the model list below for tested combinations.

Does AMD Radeon RX 6900 XT support CUDA?

No — AMD Radeon RX 6900 XT is an AMD card. Use ROCm (Linux) or the Vulkan backend in llama.cpp instead. CUDA-only tools won't work.

How much does AMD Radeon RX 6900 XT cost?

The AMD Radeon RX 6900 XT launched at an MSRP of $999 in 2020. Now sells well below its launch price on the used market. Retail prices change often, so check the current price with a retailer before you buy.

Where next?

Buyer guides
Troubleshooting

Reviewed by RunLocalAI Editorial. See our editorial policy for how we research and verify hardware specifications.