Intel Core Ultra X9 378H

The Core Ultra X9 378H is a high-end Panther Lake laptop chip built on Intel's 18A process and soldered to the motherboard. It combines 4 performance cores, 8 efficient cores and 4 low-power efficient cores for 16 cores and 16 threads. The performance cores reach up to 5.0 GHz, the efficient cores up to 3.8 GHz and the low-power cores up to 3.6 GHz. It uses LPDDR5x memory at up to 9600 MT/s in two channels, up to 96 GB, and supports Thunderbolt 4 and PCIe 5.0. The X in the name marks the models with the full Arc B390 graphics.

With 16 cores, the 378H has plenty of headroom for photo and video editing, code builds, heavy multitasking and gaming. Everyday tasks run on the low-power cores to save battery, and the performance cores step in when you need speed. Intel rates it at 25 W base power, 15 W minimum and up to 80 W turbo, so a laptop with good cooling will sustain much more speed than a slim model tuned for quiet running.

The Intel Arc B390 GPU has 12 Xe-cores running at up to 2.5 GHz, the largest integrated graphics in the Panther Lake lineup. It can play many current games at reasonable settings and speeds up video editing and creative apps, which lets some laptops skip a dedicated GPU. The GPU is rated at 122 TOPS for AI work, and the NPU at 50 TOPS, above the 40 TOPS needed for Copilot+ PC features.

The Core Ultra X9 388H sits just above it with a slightly higher top boost on the same 16-core, Arc B390 layout, and the Core Ultra X7 368H is a step below. The Core Ultra 9 386H has the same kind of CPU layout but smaller graphics. The Core Ultra 9 288V from the Lunar Lake generation has 8 cores and on-package memory. AMD's Ryzen AI 9 HX 370 and Ryzen AI 9 HX 470 are the direct rivals, with 12 cores and 24 threads and Radeon 890M class graphics. The comparison pages below show each spec side by side.

Yes, if you want a premium thin laptop that can edit video, handle creative work and play games without a separate graphics card, while still getting good battery life. The laptop's cooling and power limits decide how much of the chip's speed you actually get, so check reviews of the specific model. If you mainly browse and use office apps, a Core Ultra 7 laptop costs less and will feel just as quick.