Intel Arc B390 confirmed, the flagship “Panther Lake” iGPU

Slowly but steadily, we are getting confirmation on the Intel Core Ultra 300 series lineup. Last week, Jaykihn revealed the full lineup with SKU names and partial specs, and it was also revealed that the flagship integrated graphics SKU for Panther Lake is called Arc B390, which at this point was easy to guess.

In short, Intel Core Ultra X-Series SKUs should have the B390 graphics, which uses 12 Xe3 cores. Intel will also offer a 10 Xe3-core Arc B370 GPU (already leaked) and 4/2 Xe3 variants as well, which as far as we know, do not have names yet (could be B350/B310).

The leak again comes from Samsung’s next-gen laptop lineup, but this time from the flagship Galaxy Book6 Pro , set to use the Core Ultra X7 358H CPU. This is not the flagship SKU though, because the clock speed is expected to be 300 MHz lower than the 388H flagship (5.1 GHz). According to the Geekbench page, the boost clock is confirmed at 4778 MHz , which aligns with Jaykihn’s leak.

Source: Geekbench

Shifting focus to graphics, we see that the laptop has 32GB system memory, where 16.4GB is dedicated to graphics. The Arc B390 GPU is listed with 96 compute units, which translates to 12 Xe3 cores. The clock speed is reportedly 2.5 GHz , so that would make it 450 MHz higher than Arc 140V (2.05 GHz) as featured in Core Ultra 200 “Lunar Lake” and 150 MHz faster than the Core Ultra 9 285H Arc 140T (2.35 GHz) as featured in the “Arrow Lake” series.

Source: Geekbench

It does not make much sense to draw strong conclusions from the OpenCL benchmark result, but just to keep things tidy, that score roughly matches GeForce GTX 1650 Ti Laptop GPU to RTX 3050 Laptop GPU performance right now, which is good for integrated graphics but still far from high-end.

Intel confirmed Core Ultra 300 series will be released in 2026. Samsung has not yet revealed the new lineup of its laptops, so Geekbench serves as the only source of this new SKU for now.

Source: Geekbench

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