Intel Arc B370 Integrated Graphics: A Closer Look at the New Mid-Tier iGPU

Intel’s latest "Panther Lake-H" mobile processor lineup has generated significant buzz, particularly around the flagship Arc B390 integrated graphics. With its 12 Xe3-core architecture, the Arc B390 is exclusive to the high-end Core Ultra 300 series X9 and X7 models, leaving many budget-conscious users searching for more accessible options. While the generational leap in performance comes with a notable price premium, Intel’s more affordable Arc B370 iGPU is emerging as a compelling alternative.

Arc B370: Performance and Specifications

The Arc B370, featuring 10 Xe3 cores, has recently been evaluated by Notebookcheck using a Core Ultra 5 338H engineering sample. This processor, equipped with a 12-core (4 performance + 8 efficiency) configuration, maintained a consistent 35-watt power limit during testing. Compared to the Arc B390, the B370 operates at a slightly lower maximum GPU clock speed of 2.4 GHz versus 2.5 GHz. Like its higher-end counterpart, the Core Ultra 5 338H is paired exclusively with soldered RAM, supporting speeds up to 8533 MHz.

Early synthetic benchmark results indicate that while the Arc B370 trails the B390, it still delivers impressive performance gains over previous Intel integrated graphics solutions (such as the Arc Graphics 140V/140T) and even outpaces AMD’s Radeon 890M in several scenarios. In 3DMark Time Spy graphics testing, the Arc B370 achieved a score of 5933 points on the Core Ultra 5 338H sample, compared to the B390’s 6679 points on an ASUS ExpertBook Ultra B9406CAA platform.

Efficiency and Real-World Implications

Notably, the Arc B370’s performance at lower power levels is nearly on par with the B390. At a 20-watt TDP, the B370 matches the B390’s output, and at 35 watts, the performance gap is a modest 6%. This efficiency makes the Arc B370 an attractive option for users seeking strong graphics capabilities without the premium price tag of flagship models.

While an earlier Furmark score had raised concerns about the B370’s capabilities, recent hands-on testing paints a much more positive picture. The Arc B370 stands out as a significant step forward for Intel’s integrated graphics, offering a balance of performance and efficiency that should appeal to a wide range of laptop buyers. As the Core Ultra 5 338H approaches its retail launch, further comprehensive reviews are anticipated, providing deeper insights into the real-world performance of Intel’s latest mid-tier iGPU.