Intel Arc B370 integrated graphics has shown some impressive scaling at various power levels. Part of the brand’s latest Core Ultra 5 338H CPUs, the B370 comfortably outpaces last-gen Arc Graphics 140V and AMD’s Radeon 890M graphics, going as far as to compete with higher-tier and dedicated solutions.
Following Intel’s introduction of its Panther Lake-H mobile processor series, all attention was focused on the high-tier Core Ultra X9/X7 models packing the Arc B390 integrated graphics. With its full 12 Xe3-cores configuration, the B390 showed what Intel’s Xe3 graphics is capable of. However, while that’s nice for those who can afford high-end laptops, mainstream devices will likely only feature the cut-down B370 iGPU. So, in order to find out how much performance is left on the table, Notebookcheck put a Core Ultra 5 338H engineering sample equipped with the Arc B370 iGPU to the test.
Housing 12 CPU cores (split into 4P + 4E + 4LPE cores) plus 10 Xe3 GPU cores (two fewer than the B390) on a system configured for a sustained 35W power limit, the Core Ultra 5 338H managed to comfortably beat equivalent last-gen solutions, closely trailing its higher-tier Panther Lake siblings. To be more precise, the B370 iGPU managed to score 5,933 points in 3DMark Time Spy, slotting just 11% behind the B390. It even managed to beat a low-power configuration of Nvidia’s dedicated RTX 4050 mobile GPU.
But that’s not all, as matters become even more interesting in instances where the GPU power budget is lowered. When configured at 35W, Notebookcheck found that the B370 reduced the performance gap to just 6% (down from 11%). Better yet, going further down to 20W resulted in identical performance between the B370 and B390, making the B370 a great candidate for thin laptops where power and cooling could limit the B390. It is also important to note that this is just an engineering sample, meaning that the final product could be even faster given up-to-date firmware and drivers.
According to Intel’s official specs, the Arc B370 should clock up to 2.4GHz, which is 100MHz lower than the B390. The brand also recommends pairing it with fast DDR5-8533 memory to extract the maximum performance. A very important choice considering that said memory is soldered, and thus can’t be upgraded later.
This mid-range iGPU is expected to launch within the next couple of weeks as part of the Core Ultra 5 338H. Expect much deeper reviews and analyses for what could be the most sought-after Panther Lake CPU that’s primed for thin-and-light laptops.
