readygpu

NVIDIA GeForce RTX 5080 vs AMD Radeon RX 9070 XT

For running models locally, priced in Canada. At 32k context the first runs 13 models fully in memory, the second 13.

In short

Both have 16 GB of memory for models; the NVIDIA GeForce RTX 5080 has 960 GB/s of bandwidth and the AMD Radeon RX 9070 XT 640 GB/s. At 32k context both run the same 13 models we track fully in memory. On the models both run fully in memory, the NVIDIA GeForce RTX 5080 is about 1.7× as fast as the AMD Radeon RX 9070 XT (estimated, median across models). In Canada the NVIDIA GeForce RTX 5080 costs $2,370 at Amazon and the AMD Radeon RX 9070 XT $1,200 at Amazon: the AMD Radeon RX 9070 XT is $1,170 cheaper.

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

NVIDIA GeForce RTX 5080

$2,370

Amazon

Add to build
AMD Radeon RX 9070 XT

$1,200

Amazon

Add to build

Specifications

SpecNVIDIA GeForce RTX 5080AMD Radeon RX 9070 XT
GPUGeForce RTX 5080Radeon RX 9070 XT
Memory16 GB GDDR716 GB GDDR6
Memory bus256-bit256-bit
Memory bandwidth960 GB/s640 GB/s
FP16 compute113 TFLOPS195 TFLOPS
SoftwareCUDAROCm
Board power360 W304 W
PCIe generationGen 5Gen 5
PCIe lanesx16x16

What each runs

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

ModelNVIDIA GeForce RTX 5080AMD Radeon RX 9070 XT
gpt-oss 20B110tok/sMXFP465tok/sMXFP4
Gemma 4 12B44tok/sQ8_026tok/sQ8_0
Qwen 3.5 9B56tok/sQ8_033tok/sQ8_0
Qwen3 14B41tok/sQ4_K_M25tok/sQ4_K_M
Ministral 3 14B40tok/sQ5_K_M24tok/sQ5_K_M
DeepSeek R1 0528 Qwen3 8B44tok/sQ8_026tok/sQ8_0
Qwen3 8B44tok/sQ8_026tok/sQ8_0
Qwen 3.5 4B106tok/sQ8_063tok/sQ8_0
Ministral 3 8B44tok/sQ8_026tok/sQ8_0
Granite 4.2 8B41tok/sQ8_024tok/sQ8_0
Gemma 4 E4B65tok/sQ8_038tok/sQ8_0
LFM2.5 8B-A1B134tok/sQ8_079tok/sQ8_0
Llama 3.1 8B55tok/sQ6_K32tok/sQ6_K
Qwen 3.8 27Boffloadoffload
Qwen 3.5 122B-A10Boffloadoffload
Qwen 3.6 27Boffloadoffload
Gemma 4 31Boffloadoffload
Mistral Small 4 119Boffloadoffload
Qwen 3.6 35B-A3Boffloadoffload
Qwen 3.5 27Boffloadoffload
Gemma 4 26B-A4Boffloadoffload
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
Qwen3 32Boffloadoffload
Gemma 3 27Boffloadoffload
Mistral Small 3.2 24Boffloadoffload
DeepSeek R1 Distill Qwen 32Boffloadoffload
Phi-4 14Boffloadoffload
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
Llama 3.3 70Bwon't runwon't run

Questions

Which is better for local AI, the NVIDIA GeForce RTX 5080 or the AMD Radeon RX 9070 XT?
Choose the NVIDIA GeForce RTX 5080 for speed. Choose the AMD Radeon RX 9070 XT to spend less.
Which can run bigger models, the NVIDIA GeForce RTX 5080 or the AMD Radeon RX 9070 XT?
At 32k context both run the same 13 models we track fully in memory.
Which is faster for local AI, the NVIDIA GeForce RTX 5080 or the AMD Radeon RX 9070 XT?
On the models both run fully in memory, the NVIDIA GeForce RTX 5080 is about 1.7× as fast as the AMD Radeon RX 9070 XT (estimated, median across models).
What is the price difference between the NVIDIA GeForce RTX 5080 and the AMD Radeon RX 9070 XT?
In Canada the NVIDIA GeForce RTX 5080 costs $2,370 at Amazon and the AMD Radeon RX 9070 XT $1,200 at Amazon: the AMD Radeon RX 9070 XT is $1,170 cheaper.

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