readygpu

NVIDIA GeForce RTX 5080 vs AMD Radeon RX 7900 XTX

For running models locally, priced in Canada. At 128k context the first runs 18 models fully in memory, the second 23.

In short

The AMD Radeon RX 7900 XTX has more memory for models: 24 GB against 16 GB. At 128k context the AMD Radeon RX 7900 XTX runs 23 of the models we track fully in memory and the NVIDIA GeForce RTX 5080 18; only the AMD Radeon RX 7900 XTX holds Gemma 4 26B-A4B. On the models both run fully in memory, the NVIDIA GeForce RTX 5080 is about 1.1× as fast as the AMD Radeon RX 7900 XTX (estimated, median across models). In Canada the NVIDIA GeForce RTX 5080 costs $2,370 at Amazon and the AMD Radeon RX 7900 XTX $2,500 at eBay (used): the NVIDIA GeForce RTX 5080 is $130 cheaper.

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

NVIDIA GeForce RTX 5080

$2,370

Amazon

Add to build
AMD Radeon RX 7900 XTX

$2,500

eBay, used (asking)

Add to build

Specifications

SpecNVIDIA GeForce RTX 5080AMD Radeon RX 7900 XTX
GPUGeForce RTX 5080Radeon RX 7900 XTX
Memory16 GB GDDR724 GB GDDR6
Memory bus256-bit384-bit
Memory bandwidth960 GB/s960 GB/s
FP16 compute113 TFLOPS123 TFLOPS
SoftwareCUDAROCm
Board power360 W355 W
PCIe generationGen 5Gen 4
PCIe lanesx16x16

What each runs

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

ModelNVIDIA GeForce RTX 5080AMD Radeon RX 7900 XTX
Gemma 4 26B-A4Boffload54tok/sQ5_K_M
gpt-oss 20B64tok/sQ4_K_M56tok/sMXFP4
Gemma 4 12B49tok/sQ6_K35tok/sQ8_0
Qwen 3.5 9B43tok/sQ8_038tok/sQ8_0
Qwen 3.5 4B67tok/sQ8_060tok/sQ8_0
Gemma 4 E4B50tok/sQ8_044tok/sQ8_0
LFM2.5 8B-A1B49tok/sUD-Q6_K42tok/sQ8_0
Llama 3.1 8Boffload23tok/sQ5_K_M
Qwen2.5 0.5B278tok/sQ8_0247tok/sQ8_0
Qwen3.5 0.8B244tok/sQ8_0216tok/sQ8_0
Qwen3.5 2B194tok/sQ5_K_M172tok/sQ5_K_M
DeepSeek R1 Distill Qwen 1.5B105tok/sQ8_093tok/sQ8_0
Mellum2.1 12B A2.5B Thinking78tok/sQ8_069tok/sQ8_0
MiniCPM5 2B72tok/sQ8_064tok/sQ8_0
LFM2.5 2.6B55tok/sQ8_048tok/sQ8_0
LFM2.5 VL 3B55tok/sQ8_048tok/sQ8_0
GLM 4.6V Flash52tok/sQ4_K_M34tok/sQ8_0
DeepSeek R1 Distill Qwen 7B43tok/sQ6_K34tok/sQ8_0
granite vision 4.1 4b42tok/sQ8_037tok/sQ8_0
granite 4.2 3b41tok/sQ8_036tok/sQ8_0
Kimi VL A3Boffload43tok/smlx-8bit
GLM 4.1V 9B Thinkingoffload31tok/smlx-8bit
DeepSeek R1 Distill Llama 8Boffload23tok/sQ5_K_M
Qwen 3.8 27Boffloadoffload
Qwen 3.5 122B-A10Bwon't runoffload
Qwen 3.6 27Boffloadoffload
Gemma 4 31Boffloadoffload
Mistral Small 4 119Bwon't runoffload
Qwen 3.6 35B-A3Boffloadoffload
Qwen 3.5 27Boffloadoffload
Qwen 3.5 35B-A3Boffloadoffload
GLM 4.7 Flashoffloadoffload
Devstral Small 2 24Boffloadoffload
Nemotron 3.5 Lightning 30B-A3Boffloadoffload
Kimi Linear 48B-A3Boffloadoffload
Qwen3 Coder 30B-A3Boffloadoffload
Gemma 3 27Boffloadoffload
Mistral Small 3.2 24Boffloadoffload
Ministral 3 14Boffloadoffload
Qwen3 14Boffloadoffload
DeepSeek R1 0528 Qwen3 8Boffloadoffload
Qwen3 8Boffloadoffload
Phi-4 14Boffloadoffload
Ministral 3 8Boffloadoffload
Granite 4.2 8Boffloadoffload
LFM2.5 24B A2Boffloadoffload
Ministral 3 8B Reasoning 2512offloadoffload
DeepSeek R1 Distill Qwen 14Boffloadoffload
Devstral Small 2507offloadoffload
Magistral Small 2506offloadoffload
Magistral Small 2507offloadoffload
Magistral Small 2509offloadoffload
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
Qwen3 Coder Nextwon't runwon't run
gpt-oss 120Bwon't runwon't run
GLM 4.5 Airwon't runwon't run
Qwen3 Next 80B-A3Bwon't runwon't run
Qwen3 32Bwon't runwon't run
DeepSeek R1 Distill Qwen 32Bwon'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 V3 0324won't runwon't run
DeepSeek V3.1won'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 4.6Vwon'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 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
granite 4.2 30bwon't runwon't run

Questions

Which is better for local AI, the NVIDIA GeForce RTX 5080 or the AMD Radeon RX 7900 XTX?
Choose the AMD Radeon RX 7900 XTX to run bigger models. Choose the NVIDIA GeForce RTX 5080 for speed. Choose the NVIDIA GeForce RTX 5080 to spend less.
Which can run bigger models, the NVIDIA GeForce RTX 5080 or the AMD Radeon RX 7900 XTX?
At 128k context the AMD Radeon RX 7900 XTX runs 23 of the models we track fully in memory and the NVIDIA GeForce RTX 5080 18; only the AMD Radeon RX 7900 XTX holds Gemma 4 26B-A4B.
Which is faster for local AI, the NVIDIA GeForce RTX 5080 or the AMD Radeon RX 7900 XTX?
On the models both run fully in memory, the NVIDIA GeForce RTX 5080 is about 1.1× as fast as the AMD Radeon RX 7900 XTX (estimated, median across models).
What is the price difference between the NVIDIA GeForce RTX 5080 and the AMD Radeon RX 7900 XTX?
In Canada the NVIDIA GeForce RTX 5080 costs $2,370 at Amazon and the AMD Radeon RX 7900 XTX $2,500 at eBay (used): the NVIDIA GeForce RTX 5080 is $130 cheaper.

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