Which is better for local AI, the Intel Arc B580 or the AMD Radeon RX 7800 XT?

Choose the AMD Radeon RX 7800 XT to run bigger models. Choose the AMD Radeon RX 7800 XT for speed. Choose the Intel Arc B580 to spend less.

Intel Arc B580 vs AMD Radeon RX 7800 XT

For running models locally, priced in the UK. At 8k context the first runs 32 models fully in memory, the second 35.

In short

The AMD Radeon RX 7800 XT has more memory for models: 16 GB against 12 GB. At 8k context the AMD Radeon RX 7800 XT runs 35 of the models we track fully in memory and the Intel Arc B580 32; only the AMD Radeon RX 7800 XT holds gpt-oss 20B. On the models both run fully in memory, the AMD Radeon RX 7800 XT is about 1.5× as fast as the Intel Arc B580 (estimated, median across models). In the UK the Intel Arc B580 costs £349 at Amazon and the AMD Radeon RX 7800 XT £604 at Amazon: the Intel Arc B580 is £255 cheaper.

Updated 18 October 2026. Speeds are estimates; how they are worked out.

Intel Arc B580

£349

Amazon

Add to build

AMD Radeon RX 7800 XT

£604

Amazon

Add to build

Specifications

Spec	Intel Arc B580	AMD Radeon RX 7800 XT
GPU	Arc B580	Radeon RX 7800 XT
Memory	12 GB GDDR6	16 GB GDDR6
Memory bus	192-bit	256-bit
Memory bandwidth	456 GB/s	624 GB/s
FP16 compute	116.5 TFLOPS	74 TFLOPS
Software	SYCL / oneAPI	ROCm
Board power	190 W	263 W
PCIe generation	Gen 4	Gen 4
PCIe lanes	x8	x16

What each runs

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

Model	Intel Arc B580	AMD Radeon RX 7800 XT
gpt-oss 20B	offload	78tok/sMXFP4
Gemma 4 12B	22tok/sQ6_K	26tok/sQ8_0
Qwen 3.5 9B	23tok/sQ8_0	35tok/sQ8_0
Qwen3 14B	22tok/sQ4_K_M	26tok/sQ6_K
Ministral 3 14B	21tok/sQ5_K_M	28tok/sQ6_K
DeepSeek R1 0528 Qwen3 8B	23tok/sQ8_0	35tok/sQ8_0
Qwen3 8B	23tok/sQ8_0	35tok/sQ8_0
Phi-4 14B	22tok/sQ4_K_M	25tok/sQ6_K
Qwen 3.5 4B	48tok/sQ8_0	72tok/sQ8_0
Ministral 3 8B	22tok/sQ8_0	34tok/sQ8_0
Granite 4.2 8B	21tok/sQ8_0	32tok/sQ8_0
Gemma 4 E4B	27tok/sQ8_0	41tok/sQ8_0
LFM2.5 8B-A1B	86tok/sQ8_0	140tok/sQ8_0
Llama 3.1 8B	30tok/sQ6_K	45tok/sQ6_K
Qwen2.5 0.5B	361tok/sQ8_0	543tok/sQ8_0
Qwen3.5 0.8B	245tok/sQ8_0	369tok/sQ8_0
Qwen3.5 2B	147tok/sQ5_K_M	221tok/sQ5_K_M
DeepSeek R1 Distill Qwen 1.5B	107tok/sQ8_0	161tok/sQ8_0
MiniCPM5 2B	75tok/sQ8_0	113tok/sQ8_0
LFM2.5 2.6B	68tok/sQ8_0	102tok/sQ8_0
LFM2.5 VL 3B	68tok/sQ8_0	102tok/sQ8_0
Spark X2.5 4B	67tok/smlx-4bit	101tok/smlx-4bit
Kimi VL A3B Thinking 2506	58tok/sQ4_K_M	94tok/sQ4_K_M
Mellum2.1 12B A2.5B Thinking	57tok/sQ5_K_M	73tok/sQ8_0
granite vision 4.1 4b	53tok/sQ8_0	80tok/sQ8_0
granite 4.2 3b	50tok/sQ8_0	75tok/sQ8_0
FrogNano 4B 2609	46tok/sQ8_0	70tok/sQ8_0
DeepSeek R1 Distill Qwen 7B	27tok/sQ8_0	40tok/sQ8_0
GLM 4 9B 0414	27tok/smlx-5bit	40tok/smlx-5bit
DeepSeek R1 Distill Llama 8B	24tok/sQ8_0	36tok/sQ8_0
Ministral 3 8B Reasoning 2512	22tok/sQ8_0	34tok/sQ8_0
GLM 4.6V Flash	22tok/sQ8_0	33tok/sQ8_0
DeepSeek R1 Distill Qwen 14B	22tok/sQ4_K_M	25tok/sQ6_K
Kimi VL A3B	offload	74tok/smlx-6bit
GLM 4.1V 9B Thinking	offload	28tok/smlx-8bit
Qwen 3.8 27B	offload	offload
Qwen 3.5 122B-A10B	won't run	offload
Qwen 3.6 27B	offload	offload
Gemma 4 31B	offload	offload
Mistral Small 4 119B	won't run	offload
Qwen 3.6 35B-A3B	offload	offload
Qwen 3.5 27B	offload	offload
Gemma 4 26B-A4B	offload	offload
Qwen 3.5 35B-A3B	offload	offload
GLM 4.7 Flash	offload	offload
Devstral Small 2 24B	offload	offload
Nemotron 3.5 Lightning 30B-A3B	offload	offload
Kimi Linear 48B-A3B	offload	offload
Qwen3 Coder 30B-A3B	offload	offload
Qwen3 32B	offload	offload
Mistral Small 3.2 24B	offload	offload
Gemma 3 27B	offload	offload
DeepSeek R1 Distill Qwen 32B	offload	offload
LFM2.5 24B A2B	offload	offload
Devstral Small 2507	offload	offload
Magistral Small 2506	offload	offload
Magistral Small 2507	offload	offload
Magistral Small 2509	offload	offload
granite 4.2 30b	offload	offload
Qwen3.8 27B OBLITERATED	offload	offload
DeepSeek V4 Flash	won't run	won't run
GLM 5.3 Flash	won't run	won't run
Qwen 3.8 Flash Next	won't run	won't run
MiniMax M2.7	won't run	won't run
Nemotron 3 Super 120B-A12B	won't run	won't run
Qwen3 Coder Next	won't run	won't run
gpt-oss 120B	won't run	won't run
GLM 4.5 Air	won't run	won't run
Qwen3 Next 80B-A3B	won't run	won't run
Llama 3.3 70B	won't run	won't run
DeepSeek R1	won't run	won't run
DeepSeek R1 0528	won't run	won't run
DeepSeek R1 Distill Llama 70B	won't run	won't run
DeepSeek R1 Zero	won't run	won't run
DeepSeek V3 0324	won't run	won't run
DeepSeek V3.1	won't run	won't run
DeepSeek V3.1 Terminus	won't run	won't run
DeepSeek V3.2	won't run	won't run
DeepSeek V4 Flash 0731	won't run	won't run
DeepSeek V4 Flash Vision Exp	won't run	won't run
Devstral 2 123B Instruct 2512	won't run	won't run
GLM 4.5V	won't run	won't run
GLM 4.6	won't run	won't run
GLM 4.6V	won't run	won't run
GLM 4.7	won't run	won't run
GLM 5	won't run	won't run
GLM 5.1	won't run	won't run
GLM 5.2	won't run	won't run
GLM 5.3	won't run	won't run
Kimi Dev 72B	won't run	won't run
Kimi K2	won't run	won't run
Kimi K2 Instruct 0905	won't run	won't run
Kimi K2 Thinking	won't run	won't run
Kimi K2.5	won't run	won't run
MiniMax M2	won't run	won't run
MiniMax M2.1	won't run	won't run
MiniMax M2.5	won't run	won't run
MiniMax M3	won't run	won't run
Mistral Medium 3.5 128B	won't run	won't run

Questions

Which is better for local AI, the Intel Arc B580 or the AMD Radeon RX 7800 XT?: Choose the AMD Radeon RX 7800 XT to run bigger models. Choose the AMD Radeon RX 7800 XT for speed. Choose the Intel Arc B580 to spend less.
Which can run bigger models, the Intel Arc B580 or the AMD Radeon RX 7800 XT?: At 8k context the AMD Radeon RX 7800 XT runs 35 of the models we track fully in memory and the Intel Arc B580 32; only the AMD Radeon RX 7800 XT holds gpt-oss 20B.
Which is faster for local AI, the Intel Arc B580 or the AMD Radeon RX 7800 XT?: On the models both run fully in memory, the AMD Radeon RX 7800 XT is about 1.5× as fast as the Intel Arc B580 (estimated, median across models).
What is the price difference between the Intel Arc B580 and the AMD Radeon RX 7800 XT?: In the UK the Intel Arc B580 costs £349 at Amazon and the AMD Radeon RX 7800 XT £604 at Amazon: the Intel Arc B580 is £255 cheaper.

Intel Arc B580 vs AMD Radeon RX 7800 XT

In short

Specifications

What each runs

Questions

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