readygpu

NVIDIA GeForce RTX 4080 Super vs AMD Radeon RX 7900 XTX

For running models locally, priced in the US. At 64k context the first runs 28 models fully in memory, the second 42.

In short

The AMD Radeon RX 7900 XTX has more memory for models: 24 GB against 16 GB. At 64k context the AMD Radeon RX 7900 XTX runs 42 of the models we track fully in memory and the NVIDIA GeForce RTX 4080 Super 28; only the AMD Radeon RX 7900 XTX holds Qwen 3.8 27B. On the models both run fully in memory, the AMD Radeon RX 7900 XTX is about 1.2× as fast as the NVIDIA GeForce RTX 4080 Super (estimated, median across models). In the US the NVIDIA GeForce RTX 4080 Super costs $1,255 at Amazon and the AMD Radeon RX 7900 XTX $1,020 at Amazon: the AMD Radeon RX 7900 XTX is $235 cheaper.

Updated . Speeds are estimates; how they are worked out.

NVIDIA GeForce RTX 4080 Super

$1,255

Amazon

Add to build
AMD Radeon RX 7900 XTX

$1,020

Amazon

Add to build

Specifications

SpecNVIDIA GeForce RTX 4080 SuperAMD Radeon RX 7900 XTX
GPUGeForce RTX 4080 SuperRadeon RX 7900 XTX
Memory16 GB GDDR6X24 GB GDDR6
Memory bus256-bit384-bit
Memory bandwidth736 GB/s960 GB/s
FP16 compute104 TFLOPS123 TFLOPS
SoftwareCUDAROCm
Board power320 W355 W
PCIe generationGen 4Gen 4
PCIe lanesx16x16

What each runs

Estimated decode speed with the most precise quant that fits each one est.

ModelNVIDIA GeForce RTX 4080 SuperAMD Radeon RX 7900 XTX
Qwen 3.8 27Boffload24tok/sQ4_K_M
Qwen 3.6 27Boffload25tok/sQ4_K_M
Qwen 3.6 35B-A3Boffload97tok/sUD-Q4_K_M
Qwen 3.5 27Boffload25tok/sQ4_K_M
Gemma 4 26B-A4Boffload66tok/sUD-Q5_K_M
Qwen 3.5 35B-A3Boffload98tok/sQ4_K_M
GLM 4.7 Flashoffload48tok/sQ4_K_M
gpt-oss 20B68tok/sMXFP478tok/sMXFP4
Gemma 4 12B32tok/sQ8_038tok/sQ8_0
Qwen 3.5 9B39tok/sQ8_045tok/sQ8_0
Gemma 3 27Boffload24tok/sQ4_K_M
Ministral 3 14Boffload24tok/sQ6_K
Qwen3 14Boffload23tok/sQ6_K
DeepSeek R1 0528 Qwen3 8B31tok/sQ4_K_M29tok/sQ8_0
Qwen3 8B31tok/sQ4_K_M29tok/sQ8_0
Phi-4 14Boffload24tok/sQ4_K_M
Qwen 3.5 4B68tok/sQ8_079tok/sQ8_0
Ministral 3 8B30tok/sQ5_K_M29tok/sQ8_0
Granite 4.2 8Boffload26tok/sQ8_0
Gemma 4 E4B45tok/sQ8_052tok/sQ8_0
LFM2.5 8B-A1B64tok/sQ8_074tok/sQ8_0
Llama 3.1 8B30tok/sQ6_K35tok/sQ6_K
Qwen2.5 0.5B342tok/sQ8_0395tok/sQ8_0
Qwen3.5 0.8B279tok/sQ8_0323tok/sQ8_0
Qwen3.5 2B202tok/sQ5_K_M234tok/sQ5_K_M
DeepSeek R1 Distill Qwen 1.5B121tok/sQ8_0140tok/sQ8_0
MiniCPM5 2B83tok/sQ8_096tok/sQ8_0
Mellum2.1 12B A2.5B Thinking75tok/sQ8_087tok/sQ8_0
Kimi VL A3B Thinking 250669tok/sQ4_K_M62tok/sQ8_0
LFM2.5 2.6B66tok/sQ8_077tok/sQ8_0
LFM2.5 VL 3B66tok/sQ8_077tok/sQ8_0
Kimi VL A3B65tok/smlx-5bit60tok/smlx-8bit
granite vision 4.1 4b51tok/sQ8_059tok/sQ8_0
granite 4.2 3b49tok/sQ8_057tok/sQ8_0
GLM 4 9B 041442tok/smlx-5bit48tok/smlx-5bit
DeepSeek R1 Distill Qwen 7B39tok/sQ8_045tok/sQ8_0
GLM 4.6V Flash36tok/sQ8_042tok/sQ8_0
GLM 4.1V 9B Thinking32tok/smlx-8bit37tok/smlx-8bit
DeepSeek R1 Distill Llama 8B30tok/sQ6_K31tok/sQ8_0
Ministral 3 8B Reasoning 251230tok/sQ5_K_M29tok/sQ8_0
LFM2.5 24B A2Boffload48tok/sQ4_K_M
DeepSeek R1 Distill Qwen 14Boffload23tok/sQ5_K_M
Qwen 3.5 122B-A10Bwon't runoffload
Gemma 4 31Boffloadoffload
Qwen3 Coder Nextwon't runoffload
Mistral Small 4 119Boffloadoffload
Devstral Small 2 24Boffloadoffload
Qwen3 Next 80B-A3Bwon't runoffload
Nemotron 3.5 Lightning 30B-A3Boffloadoffload
Kimi Linear 48B-A3Boffloadoffload
Qwen3 Coder 30B-A3Boffloadoffload
Qwen3 32Boffloadoffload
Mistral Small 3.2 24Boffloadoffload
DeepSeek R1 Distill Qwen 32Boffloadoffload
Devstral Small 2507offloadoffload
Magistral Small 2506offloadoffload
Magistral Small 2507offloadoffload
Magistral Small 2509offloadoffload
granite 4.2 30boffloadoffload
DeepSeek V4 Flashwon't runwon't run
GLM 5.3 Flashwon't runwon't run
Qwen 3.8 Flash Nextwon't runwon't run
MiniMax M2.7won't runwon't run
Nemotron 3 Super 120B-A12Bwon't runwon't run
gpt-oss 120Bwon't runwon't run
GLM 4.5 Airwon't runwon't run
Llama 3.3 70Bwon't runwon't run
DeepSeek R1won't runwon't run
DeepSeek R1 0528won't runwon't run
DeepSeek R1 Distill Llama 70Bwon't runwon't run
DeepSeek R1 Zerowon't runwon't run
DeepSeek V3 0324won't runwon't run
DeepSeek V3.1won't runwon't run
DeepSeek V3.1 Terminuswon't runwon't run
DeepSeek V3.2won't runwon't run
DeepSeek V4 Flash 0731won't runwon't run
DeepSeek V4 Flash Vision Expwon't runwon't run
Devstral 2 123B Instruct 2512won't runwon't run
GLM 4.5Vwon't runwon't run
GLM 4.6won't runwon't run
GLM 4.6Vwon't runwon't run
GLM 4.7won't runwon't run
GLM 5.1won't runwon't run
GLM 5.2won't runwon't run
GLM 5.3won't runwon't run
Kimi Dev 72Bwon't runwon't run
Kimi K2won't runwon't run
Kimi K2 Instruct 0905won't runwon't run
Kimi K2 Thinkingwon't runwon't run
Kimi K2.5won't runwon't run
MiniMax M2won't runwon't run
MiniMax M2.1won't runwon't run
MiniMax M2.5won't runwon't run
MiniMax M3won't runwon't run
Mistral Medium 3.5 128Bwon't runwon't run

Questions

Which is better for local AI, the NVIDIA GeForce RTX 4080 Super or the AMD Radeon RX 7900 XTX?
Choose the AMD Radeon RX 7900 XTX to run bigger models. Choose the AMD Radeon RX 7900 XTX for speed. Choose the AMD Radeon RX 7900 XTX to spend less.
Which can run bigger models, the NVIDIA GeForce RTX 4080 Super or the AMD Radeon RX 7900 XTX?
At 64k context the AMD Radeon RX 7900 XTX runs 42 of the models we track fully in memory and the NVIDIA GeForce RTX 4080 Super 28; only the AMD Radeon RX 7900 XTX holds Qwen 3.8 27B.
Which is faster for local AI, the NVIDIA GeForce RTX 4080 Super or the AMD Radeon RX 7900 XTX?
On the models both run fully in memory, the AMD Radeon RX 7900 XTX is about 1.2× as fast as the NVIDIA GeForce RTX 4080 Super (estimated, median across models).
What is the price difference between the NVIDIA GeForce RTX 4080 Super and the AMD Radeon RX 7900 XTX?
In the US the NVIDIA GeForce RTX 4080 Super costs $1,255 at Amazon and the AMD Radeon RX 7900 XTX $1,020 at Amazon: the AMD Radeon RX 7900 XTX is $235 cheaper.

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