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NVIDIA GeForce RTX 4080 Super vs AMD Radeon RX 9070 XT

For running models locally, priced in India. At 64k context the first runs 10 models fully in memory, the second 10.

In short

Both have 16 GB of memory for models; the NVIDIA GeForce RTX 4080 Super has 736 GB/s of bandwidth and the AMD Radeon RX 9070 XT 640 GB/s. At 64k context both run the same 10 models we track fully in memory. On the models both run fully in memory, the NVIDIA GeForce RTX 4080 Super is about 1.3× as fast as the AMD Radeon RX 9070 XT (estimated, median across models).

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

NVIDIA GeForce RTX 4080 Super

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AMD Radeon RX 9070 XT

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Specifications

SpecNVIDIA GeForce RTX 4080 SuperAMD Radeon RX 9070 XT
GPUGeForce RTX 4080 SuperRadeon RX 9070 XT
Memory16 GB GDDR6X16 GB GDDR6
Memory bus256-bit256-bit
Memory bandwidth736 GB/s640 GB/s
FP16 compute104 TFLOPS195 TFLOPS
SoftwareCUDAROCm
Board power320 W304 W
PCIe generationGen 4Gen 5
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 9070 XT
gpt-oss 20B68tok/sMXFP452tok/sMXFP4
Gemma 4 12B32tok/sQ8_025tok/sQ8_0
Qwen 3.5 9B39tok/sQ8_030tok/sQ8_0
DeepSeek R1 0528 Qwen3 8B31tok/sQ4_K_M24tok/sQ4_K_M
Qwen3 8B31tok/sQ4_K_M24tok/sQ4_K_M
Qwen 3.5 4B68tok/sQ8_053tok/sQ8_0
Ministral 3 8B30tok/sQ5_K_M25tok/sQ4_K_M
Gemma 4 E4B45tok/sQ8_035tok/sQ8_0
LFM2.5 8B-A1B64tok/sQ8_049tok/sQ8_0
Llama 3.1 8B30tok/sQ6_K25tok/sQ5_K_M
Qwen 3.8 27Boffloadoffload
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
Ministral 3 14Boffloadoffload
Qwen3 14Boffloadoffload
Phi-4 14Boffloadoffload
Granite 4.2 8Boffloadoffload
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
Qwen 3.5 122B-A10Bwon'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 4080 Super or the AMD Radeon RX 9070 XT?
Choose the NVIDIA GeForce RTX 4080 Super for speed.
Which can run bigger models, the NVIDIA GeForce RTX 4080 Super or the AMD Radeon RX 9070 XT?
At 64k context both run the same 10 models we track fully in memory.
Which is faster for local AI, the NVIDIA GeForce RTX 4080 Super or the AMD Radeon RX 9070 XT?
On the models both run fully in memory, the NVIDIA GeForce RTX 4080 Super is about 1.3× as fast as the AMD Radeon RX 9070 XT (estimated, median across models).

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