Intel has achieved a significant milestone in integrated graphics development with its new Panther Lake mobile generation. The Intel Arc B370, the second mid-range graphics unit in the Panther Lake lineup, has delivered promising results in initial synthetic benchmarks, demonstrating performance nearly on par with the flagship B390. In the 3DMark/Time Spy test, the Arc B370 in the Core Ultra 5 338H engineering sample achieved a score of 5,933 points—just 6% below the top-tier B390—while operating at a 35W power limit. This performance places the B370 close to the top of the mobile iGPU hierarchy, despite having a 1,280-core design compared to the B390’s over 1,500 cores. The results suggest a substantial improvement in both architecture and efficiency, showcasing Intel’s progress in closing the performance gap with dedicated GPUs while maintaining low power consumption.
The Arc B370’s benchmark performance positions it uniquely within the mobile graphics landscape. It matches or surpasses several dedicated gaming GPUs from Nvidia and AMD, including the Radeon RX 6500M and the GeForce RTX 4050, in synthetic tests. This is particularly notable for an integrated graphics solution, as it indicates that Intel’s Panther Lake architecture has reached a level of performance suitable for demanding applications, including modern gaming, in lightweight devices. The B370’s power draw of 20 to 35 watts is only slightly lower than the B390’s, further highlighting its efficiency gains compared to previous Intel and AMD iGPUs. This balance of performance and power efficiency makes the B370 a compelling option for users seeking capable graphics in thin-and-light laptops or handheld gaming devices.
The close performance parity with the B390, especially at lower TDP values, underscores the versatility of the Arc B370’s architecture, enabling it to deliver strong performance in a wide range of scenarios. These results suggest that the B370 could play a pivotal role in expanding the use of integrated graphics in devices where cost, size, and battery life are critical factors. The success of the Core Ultra 5 338H engineering sample indicates that Intel has made significant strides in delivering competitive gaming performance within modest power envelopes. This development may signal a broader shift in the mobile computing market, where integrated graphics could increasingly challenge discrete GPUs in mid-tier devices, offering users high performance without the added cost and bulk of dedicated graphics hardware.