Running Four Intel Graphics Cards Under Linux On Ubuntu 26.04

Written by Michael Larabel in Graphics Cards on 12 May 2026 at 10:00 AM EDT. Page 3 of 3. 21 Comments.

👁 Llama.cpp benchmark with settings of Backend: Vulkan, Model: Llama-3.1-Tulu-3-8B-Q8_0, Test: Prompt Processing 512. 2 x Arc Pro B70 was the fastest.

👁 Llama.cpp benchmark with settings of Backend: Vulkan, Model: Llama-3.1-Tulu-3-8B-Q8_0, Test: Prompt Processing 1024. 2 x Arc Pro B70 was the fastest.

👁 Llama.cpp benchmark with settings of Backend: Vulkan, Model: Mistral-7B-Instruct-v0.3-Q8_0, Test: Prompt Processing 1024. 2 x Arc Pro B70 was the fastest.

👁 Llama.cpp benchmark with settings of Backend: Vulkan, Model: DeepSeek-R1-Distill-Llama-8B-Q8_0, Test: Prompt Processing 2048. 2 x Arc Pro B70 was the fastest.

For some AI tests was Llama.cpp using models that could fit still on one BMG-G31 and see the impact on multiple graphics cards from there. For the Vulkan back-end with Llama.cpp there was scaling up to two Arc Pro B70 graphics cards but collapsed after that point. 3+ graphics cards with the Vulkan back-end was leading to worse performance than a single graphics card.

👁 Llama.cpp benchmark with settings of Backend: Intel SYCL, Model: gpt-oss-20b-Q8_0, Test: Text Generation 128. 2 x Arc Pro B70 was the fastest.

👁 Llama.cpp benchmark with settings of Backend: Intel SYCL, Model: Qwen3.5-9B-Q8_0, Test: Prompt Processing 1024. 2 x Arc Pro B70 was the fastest.

👁 Llama.cpp benchmark with settings of Backend: Intel SYCL, Model: Qwen3.5-9B-Q8_0, Test: Prompt Processing 2048. 2 x Arc Pro B70 was the fastest.

👁 Llama.cpp benchmark with settings of Backend: Intel SYCL, Model: Llama-3.1-Tulu-3-8B-Q8_0, Test: Prompt Processing 2048. 2 x Arc Pro B70 was the fastest.

👁 Llama.cpp benchmark with settings of Backend: Intel SYCL, Model: Mistral-7B-Instruct-v0.3-Q8_0, Test: Prompt Processing 2048. 2 x Arc Pro B70 was the fastest.

👁 Llama.cpp benchmark with settings of Backend: Intel SYCL, Model: DeepSeek-R1-Distill-Llama-8B-Q8_0, Test: Prompt Processing 1024. 2 x Arc Pro B70 was the fastest.

👁 Llama.cpp benchmark with settings of Backend: Intel SYCL, Model: DeepSeek-R1-Distill-Llama-8B-Q8_0, Test: Prompt Processing 2048. 2 x Arc Pro B70 was the fastest.

With the Intel SYCL back-end for Llama.cpp, two Arc Pro B70 graphics cards was the sweet spot with the models tested. With 3+ graphics cards the performance receded. But unlike with the Vulkan back-end where 3+ BMG-G31s led to worse performance than a single graphics card, with SYCL back-end the 3+ card configuration still delivered better performance than a single graphics card. The Llama.cpp Vulkan back-end seems to have issues beyond two graphics cards, unless it's a Xe/ANV driver issue.

👁 Four Intel Arc Pro B70 GPUs

In any event, that's the brief "preview" look at the Intel Arc Pro B70 on Linux with up to four graphics cards. Hopefully these preliminary numbers were of some usefulness if you have been wondering about the state of multiple Intel graphics cards on Linux. I have more extensive tests being worked now that I have my hands wet with some multi-GPU Intel testing on Linux as well as the hardware on hand for evaluating different GPU workloads up to quad-GPU scaling. I also have NVIDIA RTX PRO Blackwell graphics cards finally in the lab for an upcoming comparison there too against the Intel Arc Pro B-Series and Radeon AI PRO. Thanks to Intel for supplying the four Arc Pro B70 review samples for Linux testing at Phoronix.

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⇱ Running Four Intel Graphics Cards Under Linux On Ubuntu 26.04 - Phoronix

Running Four Intel Graphics Cards Under Linux On Ubuntu 26.04