Intel Launches Core Ultra 7 251HX Arrow Lake Processors with 18 CPU Cores and 3 Xe GPU Cores
Intel has quietly added the Core Ultra 7 251HX to its Arrow Lake HX lineup, skipping any formal announcement. The chip simply appeared on the Intel website a few weeks after it surfaced in Lenovo Legion 5i 2026 and MSI Raider 16 HX listings. The 251HX is an 18-core, 18-thread part with 6 Performance cores and 12 Efficient cores, slotting between the Core Ultra 5 245HX and the Core Ultra 7 255HX. Compared to the 255HX, it drops two P-cores and loses two threads, but keeps the same 12 E-cores and 30 MB of Smart Cache. TDP range stays identical at 55 W base and up to 160 W maximum turbo power. Max Turbo comes in at 5.1 GHz, 100 MHz below the 255HX, but the E-core base clock actually jumps 700 MHz to 2.5 GHz, and the P-core base is up 500 MHz as well at 2.9 GHz. Memory support goes up to DDR5-6400.
The integrated graphics drop to three Xe3 cores clocked up to 1.8 GHz, down from four on the 255HX, which also trims AI performance from 33 TOPS to 30. Not a dramatic difference, but worth noting if NPU performance matters for a specific workload. As an endnote, the Core Ultra 7 251HX sits between the Core Ultra 5 245HX with its 14 cores in a 6P+8E layout and 24 MB of cache, and the 20-core Core Ultra 7 255HX and 265HX sitting above.
The integrated graphics drop to three Xe3 cores clocked up to 1.8 GHz, down from four on the 255HX, which also trims AI performance from 33 TOPS to 30. Not a dramatic difference, but worth noting if NPU performance matters for a specific workload. As an endnote, the Core Ultra 7 251HX sits between the Core Ultra 5 245HX with its 14 cores in a 6P+8E layout and 24 MB of cache, and the 20-core Core Ultra 7 255HX and 265HX sitting above.
























































