Laptop Review Club has released early benchmark data indicating that Intel's Core Ultra 300 series, known as "Panther Lake," represents a significant advancement in integrated graphics. The standout data comes from 3DMark Time Spy tests linked to the flagship Core Ultra X9 388H, which reportedly scores around 6,233 points with 8533 MT/s memory and approximately 6,300 points with faster 9,600 MT/s LPDDR5X modules. Compared to "Lunar Lake," the top Panther Lake configurations show a performance increase of almost 33% in these synthetic tests compared to Lunar Lake's Arc 140V iGPU. This is compared to Arc 140V iGPU's highest 3D Mark Time Spy results with data from Notebookcheck database , which puts the Lunar Lake iGPU at 4,721 points as the highest score.

Intel has also highlighted generational improvements, claiming about 40% better performance per watt compared to "Arrow Lake-H" and about 50% compared to "Lunar Lake," with these percentages based on reference platform results across synthetic and gaming workloads. However, Intel's public materials do not specify particular SKUs, thermal design powers, or memory configurations, making it difficult to relate the marketing claims to actual laptop models and their sustained power capabilities. Overall, the leaked figures suggest that the X9 388H, featuring a 12 Xe3 core graphics block, could provide a significant boost over previous low-power Intel components and, in some synthetic comparisons, outperform competing low-power Ryzen integrated GPUs by a substantial margin.