Hardware / AMD /Radeon RX 6600

AMD · GPU

Radeon RX 6600

Runs 86 models fully in memory, 9 more with CPU offload. 7 of those sit close enough to 8 GB that our size estimate is what decides them.

Memory

8 GB

Bandwidth

224 GB/s

Runs

86

01

Specifications

Memory

8 GB

Decides which models fit at all.

Memory bandwidth

224 GB/s

How fast it can read the model. Sets the speed of the reply.

Compute

17.9 TFLOPS

Trillions of half-precision sums a second. Sets how fast it reads a long prompt, not how fast it replies.

Power draw

132 W

At full load, for sizing a power supply.

MSRP

$329

What the maker asked for it new. We hold no used or street prices, so this is not what one costs today.

Released

Oct 13, 2021

Architecture

RDNA 2

02

What it runs

Best quant per model. Text models first, then speech, then what does not fit.

What is quantisation? →

ModelParamsContextSpeedVerdict

Llama 3.2 1B Instruct1.2B33K200 tok/sFits in memory Llama 3.2 3B Instruct3.2B66K75 tok/sFits in memory Hy-MT2-1.8B2B8K102 tok/sFits in memory Granite 4.0 Micro3.2B33K75 tok/sFits in memory Gemma 3 4B4.3B66K56 tok/sFits in memory Ministral 3 3B 25123.8B33K63 tok/sFits in memory Nemotron 3.5 Content Safety4.3B16K56 tok/sFits in memory Gemma 3n 4B7.8B16K31 tok/sFits in memory Qwen2.5 7B Instruct7.6B16K32 tok/sFits in memory Llama 3.1 8B Instruct8B16K30 tok/sFits in memory Reka Edge7.1B8K34 tok/sFits in memory UI-TARS 7B8.3B8K29 tok/sFits in memory Llama 3 8B Lunaris8B4K30 tok/sFits in memory Qwen3 8B8.2B4K29 tok/sFits in memory Hy-MT2-7B8B4K26 tok/sFits in memory Granite 4.1 8B8.8B2K27 tok/sFits in memoryest Ministral 3 8B 25128.9B2K27 tok/sFits in memoryest Qwen3 VL 8B Thinking8.8B2K27 tok/sFits in memoryest Qwen3 VL 8B Instruct8.8B2K27 tok/sFits in memoryest Granite 4.2 8B8.8B2K27 tok/sFits in memoryest

Speech models it runs66 modelsTranscription and speech models that fit in memory. Throughput figures for a transcription model come from its text decoder, so treat this as a fit answer rather than a speed one.

Niagara 19m Batch.en20M12008 tok/sFits in memory Niagara 38m Batch.en38M5387 tok/sFits in memory Distil Large v3.50.8B256 tok/sFits in memory Lite Whisper Large v3 Acc1.4B146 tok/sFits in memory Owsm CTC v3.1 1B1.1B218 tok/sFits in memory Owsm CTC v3.2 ft 1B1B240 tok/sFits in memory Owsm CTC v4 1B1B205 tok/sFits in memory Hubert Large Ls960 ft0.3B640 tok/sFits in memory MMS 1b All1B137 tok/sFits in memory Wav2vec2 Large 960h Lv60 Self0.3B428 tok/sFits in memory Canary 180m Flash0.2B1334 tok/sFits in memory Canary 1b1B137 tok/sFits in memory Canary 1b Flash0.8B171 tok/sFits in memory Canary 1b v21B137 tok/sFits in memory Nemotron 3.5 ASR Streaming 0.6b0.6B228 tok/sFits in memory Nemotron Speech Streaming en 0.6b0.6B228 tok/sFits in memory Parakeet CTC 0.6b0.6B400 tok/sFits in memory Parakeet CTC 1.1b1.1B125 tok/sFits in memory Parakeet RNNT 0.6b0.6B228 tok/sFits in memory Parakeet RNNT 1.1b1.1B218 tok/sFits in memory Parakeet TDT CTC 110m0.1B1246 tok/sFits in memory Parakeet TDT 0.6b v20.6B341 tok/sFits in memory Parakeet TDT 0.6b v30.6B400 tok/sFits in memory Parakeet TDT 1.1b1.1B125 tok/sFits in memory Nyra Health CrisperWhisper1.6B150 tok/sFits in memory Whisper Large v31.5B137 tok/sFits in memory Whisper Large v3 Turbo0.8B256 tok/sFits in memory Qwen3 ASR 0.6B0.9B267 tok/sFits in memory Zipformer cr CTC Transducer XL 290M0.3B706 tok/sFits in memory Zipformer Transducer XL 290M0.3B473 tok/sFits in memory ASR Conformer Largescaleasr0.5B500 tok/sFits in memory Granite Speech 5.0 470m Turboctc0.5B409 tok/sFits in memory Granite Speech 5.0 470m Turboctc nc0.5B274 tok/sFits in memory Niagara 9m Batch.en9M15226 tok/sFits in memory Niagara 84m Batch.en84M2859 tok/sFits in memory Cohere Transcribe 03 20262.1B114 tok/sFits in memory ARK ASR 0.6B1.3B33K185 tok/sFits in memory Audio8 ASR 0.1B0.3B33K801 tok/sFits in memory MOSS Transcribe Diarize0.9B152 tok/sFits in memory Qwen3 ASR 0.6B HF0.8B300 tok/sFits in memory Qwen3 ASR 1.7B HF2B120 tok/sFits in memory Fun ASR Nano 2512 HF0.8B300 tok/sFits in memory Qwen3 ASR 1.7B2.3B104 tok/sFits in memory GLM ASR Nano 25122.3B104 tok/sFits in memory Granite 4.0 1b Speech2.3B104 tok/sFits in memory Granite Speech 4.1 2b2.3B104 tok/sFits in memory Granite Speech 4.1 2b NAR2.3B104 tok/sFits in memory STT 2.6b en2.6B92 tok/sFits in memory Canary Qwen 2.5b2.6B92 tok/sFits in memory Higgs Audio v3 STT2.7B89 tok/sFits in memory Moonshine Streaming Medium0.3B4K801 tok/sFits in memory Moonshine Streaming Small0.1B4K1370 tok/sFits in memory Granite Speech 3.3 2b3B80 tok/sFits in memory MOSS Transcribe Preview 2B2.4B8K100 tok/sFits in memory ARK ASR 3B4.1B33K59 tok/sFits in memory Hojo ASR V15.2B46 tok/sFits in memory Gemma 4 E2B it5.1B47 tok/sFits in memory Voxtral Mini 4B Realtime 26024.4B55 tok/sFits in memory Voxtral Mini 3B 25074.7B51 tok/sFits in memory Phi 4 Multimodal Instruct5.6B16K43 tok/sFits in memory Gemma 4 E4B it8B8K30 tok/sFits in memory VibeVoice ASR HF8.3B29 tok/sFits in memory Higgs Audio v3 8b STT v28.9B27 tok/sFits in memoryest Granite Speech 3.3 8b8.6B28 tok/sFits in memoryest Moonshine Streaming Tiny0B4Kno speed estimateFits in memory Moonshine Tiny0B194no speed estimateFits in memory

Runs only by spilling into system memory9 modelsThese load, but part of the weights sits in ordinary system memory, which is far slower than the chip.

Qwen3.5-9B9.7B—no speed estimateSpills to system RAMest Ministral 3 14B 251213.9B—no speed estimateSpills to system RAMest Llama Guard 4 12B12B—no speed estimateSpills to system RAMest Gemma 3 12B12.2B—no speed estimateSpills to system RAM Phi 414.7B—no speed estimateSpills to system RAM UnslopNemo 12B12.2B—no speed estimateSpills to system RAMest Rocinante 12B12.2B—no speed estimateSpills to system RAM Mistral Nemo12.2B—no speed estimateSpills to system RAMest Gemma 4 12B it12B—no speed estimateSpills to system RAM

Too large for this device129 modelsThe weights do not fit even with part of them offloaded to system memory. Closest calls first.

ReMM SLERP 13B13B—no speed estimateToo large Qwen3 14B14.8B—no speed estimateToo large gpt-oss-safeguard-20b21.5B—no speed estimateToo large Cydonia 24B V4.123.6B—no speed estimateToo large Uncensored24B—no speed estimateToo large Reka Flash 320.9B—no speed estimateToo large MythoMax 13B13B—no speed estimateToo large Gemma 3 27B27.4B—no speed estimateToo large Mistral Small 323.6B—no speed estimateToo large Qwen3.8 27B27.8B—no speed estimateToo large Mistral Small 3.1 24B24B—no speed estimateToo large Voxtral Small 24B 250724.3B—no speed estimateToo large Gemma 4 26B A4B25.8B—no speed estimateToo large GLM 4.7 Flash31.2B—no speed estimateToo large Ternary Bonsai 2 27B27B—no speed estimateToo large Gemma 2 27B27.2B—no speed estimateToo large Olmo 3 32B Think32.2B—no speed estimateToo large Qwen3 32B32.8B—no speed estimateToo large Gemma 4 31B31.3B—no speed estimateToo large Muse Glimmer 30B29.8B—no speed estimateToo large Hy-MT2-30B-A3B30.1B—no speed estimateToo large Qwen3 Coder 30B A3B Instruct30.5B—no speed estimateToo large Qwen3.5-35B-A3B36B—no speed estimateToo large Qwen3 VL 30B A3B Instruct31.1B—no speed estimateToo large Nemotron 3.5 Lightning31.6B—no speed estimateToo large Nex-N2.5-Mini35.1B—no speed estimateToo large Qwen3.6 35B A3B36B—no speed estimateToo large Mistral Small 3.2 24B24B—no speed estimateToo large Qwen3.5-27B27.8B—no speed estimateToo large Qwen3.6 27B27.8B—no speed estimateToo large Qwen3 30B A3B Thinking 250730.5B—no speed estimateToo large Qwen3 30B A3B Instruct 250730.5B—no speed estimateToo large Qwen3 VL 30B A3B Thinking31.1B—no speed estimateToo large Nemotron 3 Nano 30B A3B31.6B—no speed estimateToo large Laguna XS 2.133.4B—no speed estimateToo large Qwen2.5 Coder 32B Instruct32.8B—no speed estimateToo large Qwen3 VL 32B Instruct33.4B—no speed estimateToo large Nex-N2-Mini35.1B—no speed estimateToo large Skyfall 36B V236.9B—no speed estimateToo large Llama 3.3 70B Instruct70.6B—no speed estimateToo large Llama 3.3 Euryale 70B70.6B—no speed estimateToo large R1 Distill Llama 70B70.6B—no speed estimateToo large Qwen3 Next 80B A3B Thinking81.3B—no speed estimateToo large Qwen2.5 VL 72B Instruct73.4B—no speed estimateToo large Hunyuan A13B Instruct80.4B—no speed estimateToo large GLM 4.6V108B—no speed estimateToo large Command A111B—no speed estimateToo large gpt-oss-120b120B—no speed estimateToo large Mistral Small 4119B—no speed estimateToo large Llama 3.1 70B Instruct70.6B—no speed estimateToo large Hermes 4 70B70.6B—no speed estimateToo large Llama 3.1 Euryale 70B v2.270.6B—no speed estimateToo large Hermes 3 70B Instruct70.6B—no speed estimateToo large GLM 4.5V108B—no speed estimateToo large Ling-2.6-flash107B—no speed estimateToo large Magnum v4 72B72.7B—no speed estimateToo large Qwen2.5 72B Instruct72.7B—no speed estimateToo large Qwen3 Coder Next79.7B—no speed estimateToo large Laguna S 2.1118B—no speed estimateToo large Mixtral 8x22B Instruct141B—no speed estimateToo large Qwen3 Next 80B A3B Instruct81.3B—no speed estimateToo large Nemotron 3 Super124B—no speed estimateToo large Qwen3.5-122B-A10B125B—no speed estimateToo large Mistral Medium 3.5128B—no speed estimateToo large Llama 4 Scout109B—no speed estimateToo large GLM 4.5 Air111B—no speed estimateToo large Step 3.7 Flash201B—no speed estimateToo large Devstral 2 2512125B—no speed estimateToo large Ling-3.0-flash128B—no speed estimateToo large Step 3.5 Flash199B—no speed estimateToo large Qwen3 VL 235B A22B Thinking236B—no speed estimateToo large Qwen3 VL 235B A22B Instruct236B—no speed estimateToo large Inkling Small266B—no speed estimateToo large MiniMax M2.7229B—no speed estimateToo large MiniMax M2.5229B—no speed estimateToo large MiniMax M2229B—no speed estimateToo large Qwen3 235B A22B Thinking 2507235B—no speed estimateToo large Qwen3 235B A22B Instruct 2507235B—no speed estimateToo large DeepSeek V4 Flash291B—no speed estimateToo large GLM 5.3 Flash321B—no speed estimateToo large Hy3299B—no speed estimateToo large Laguna M.1226B—no speed estimateToo large Trinity Large Thinking399B—no speed estimateToo large MiniMax M2.1229B—no speed estimateToo large GLM 4.6357B—no speed estimateToo large GLM 4.7358B—no speed estimateToo large GLM 4.5358B—no speed estimateToo large MiniMax M3427B—no speed estimateToo large Jamba Large 1.7399B—no speed estimateToo large Llama 4 Maverick402B—no speed estimateToo large Hermes 3 405B Instruct406B—no speed estimateToo large ERNIE 4.5 VL 424B A47B424B—no speed estimateToo large Hy3 preview299B—no speed estimateToo large DeepSeek V4 Flash Vision Exp305B—no speed estimateToo large MiniMax-01456B—no speed estimateToo large MiMo-V2.5311B—no speed estimateToo large Qwen3 Coder 480B A35B480B—no speed estimateToo large DeepSeek V3 0324685B—no speed estimateToo large Nex-N2-Pro397B—no speed estimateToo large Nex-N2.5-Pro397B—no speed estimateToo large Qwen3.5 397B A17B403B—no speed estimateToo large Hermes 4 405B406B—no speed estimateToo large GLM 5.1754B—no speed estimateToo large MiniMax M1456B—no speed estimateToo large DeepSeek V3.1 Terminus685B—no speed estimateToo large DeepSeek V3685B—no speed estimateToo large DeepSeek V3.2685B—no speed estimateToo large GLM 5754B—no speed estimateToo large DeepSeek V4.1 Flash763B—no speed estimateToo large Inkling952B—no speed estimateToo large Nemotron 3 Ultra561B—no speed estimateToo large MiMo-V2.5-Pro1T—no speed estimateToo large Kimi K2 07111T—no speed estimateToo large Ling-2.6-1T1T—no speed estimateToo large Kimi K2.7 Code1.1T—no speed estimateToo large R1 0528685B—no speed estimateToo large DeepSeek V3.1685B—no speed estimateToo large DeepSeek V3.2 Exp685B—no speed estimateToo large Kimi K2 09051T—no speed estimateToo large Ring-2.6-1T1T—no speed estimateToo large Kimi K2.61.1T—no speed estimateToo large Kimi K2.51.1T—no speed estimateToo large GLM 5.2753B—no speed estimateToo large Hy4 preview780B—no speed estimateToo large DeepSeek V4 Pro1.6T—no speed estimateToo large Kimi K2 Thinking1.1T—no speed estimateToo large Qwen3.8 2.4T A95B2.4T—no speed estimateToo large LongCat 2.01.8T—no speed estimateToo large Kimi K32.8T—no speed estimateToo large

224 models have a verdict on this device: 86 fit in memory, 9 spill into system memory and 129 are too large. Every one of them is on this page.

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