AMD Radeon RX 7700 XT

Official identity

Card

AMD Radeon RX 7700 XT

gfx

gfx1101

Published VRAM

12 GB

Hardware label, not a bench

ROCm matrix

Official

gfx1101, 12 GB.

Cited support row: ROCm 10.1.0 compatibility matrix and Linux system requirements. We do not invent a support claim past that listing. AMD product page: RX 7700 XT.

HSA_OVERRIDE: Not needed when the build lists gfx1101.

What fits on this card (256K context)

Shopper verdict at 4K, then follow the pair page for 32K and full context. Q4 and up. No printed prices.

What fits in VRAM

Qwen3.6-35B-A3B on llama.cpp, f16 KV, one GPU. Q6 / Q5 / Q4 rows are calculator estimates. UD-Q3_K_XL is a labeled estimate (Hugging Face listing for Qwen3.6-35B-A3B-UD-Q3_K_XL.gguf (16.8 GB)) — not a local desktop run. Speed stays not measured. Change quant or context in the calculator.

Weights notes: Q6_K — Estimate: total_params × 6.56 bpw (nominal GGUF Q6_K; UD-Q6_K_XL uses the same bucket) / 8. Active params do not shrink the file. Q5_K_M — Hugging Face listing for Qwen3.6-35B-A3B-UD-Q5_K_XL.gguf (26.6 GB). Converted 26.6 × 10⁹ bytes → GiB. Not measured VRAM. Q4_K_M — Estimate: total_params × 4.85 bpw (nominal GGUF Q4_K_M) / 8. Active params do not shrink the file. UD-Q3_K_XL — Hugging Face listing for Qwen3.6-35B-A3B-UD-Q3_K_XL.gguf (16.8 GB). Converted 16.8 × 10⁹ bytes → GiB. Not measured VRAM.

System RAM

Minimum system RAM needed and RAM needed at full context for Qwen3.6-35B-A3B on llama.cpp at Q4_K_M, 32K selected and the model’s full context. Estimate until a first-party amdai-bench/run@1 card exists for this SKU. Rounded up to a real DIMM kit.

llama.cpp-first stack

1. Step 1

   llama.cpp first

   Vulkan is the consumer default on this site. HIP when rocminfo lists gfx1101. Official on the cited ROCm matrix — not Vulkan-only. Ollama and vLLM are not the house path for this card.

2. Step 2

   gfx1101 family package

   gfx1101 needs the gfx110x ROCm family package, same pin as the 7800 XT. Do not mix a gfx1201 (R9700 / 9070 XT) or gfx1200 (9060 XT) install. Re-check the cited matrix before you install.

3. Step 3

   12 GB vs 7800 XT

   Four GB less than the 7800 XT on the same gfx. House 35B Q4–Q6 files do not fit this VRAM — expect RAM offload or a lighter listed Q3 file, both estimates. Size the file on the calculator before you download. The R9700 remains the measured 32 GB north star.

4. Step 4

   Setup, then Stack Lab doctor

   First-run setup is Ubuntu. Open Stack Lab doctor for the gfx110x install family. House daily and Flash profiles are R9700 / local desktop — they do not apply to this 12 GB card. Packages are not published yet.

Compare with…

Head-to-head pages use the same VRAM, bandwidth, and calculator fit already on the sheets. Q3 is a labeled estimate. No invented prices. RX 7700 XT against the other published sheets:

• Compare GPUs
• vs PRO W7700
• vs RX 6700 XT
• vs RX 6800 XT
• vs RX 7800 XT

Also: PRO W6800 · PRO W7800 · PRO W7900 · R9700 · RX 6950 XT · RX 7600 · RX 7600 XT · RX 7900 GRE · RX 7900 XT · RX 7900 XTX · RX 9060 XT · RX 9070 · RX 9070 GRE · RX 9070 XT · Strix Halo