Intel confirms Core Ultra 7 251HX after first gaming laptop listings
Intel has now confirmed the Core Ultra 7 251HX, the Arrow Lake-HX mobile processor that first appeared in Lenovo Legion 5i 2026 and MSI Raider 16 HX listings . What originally looked like an unannounced SKU in early gaming laptop pages is now a public Intel product with a full specifications page.
According to Intel, the Core Ultra 7 251HX is an 18-core chip with 6 performance cores and 12 Efficient-cores. It carries 30MB of Intel Smart Cache, boosts up to 5.1 GHz, and has a 55W processor base power with 160W maximum turbo power. Intel also lists 3 Xe-cores at up to 1.8 GHz for the integrated graphics, support for up to DDR5-6400 memory.
Source: Intel
That places the 251HX between existing HX parts rather than alongside Intel’s newer Plus refresh models. The Core Ultra 7 255HX and 265HX remain 20-core 8P+12E parts with 30MB cache and higher turbo clocks of 5.2 GHz and 5.3 GHz, while the Core Ultra 5 245HX sits lower with 14 cores in a 6P+8E layout and 24MB cache. In other words, the 251HX looks like a lower-bin Arrow Lake-HX option that fills the gap between Core Ultra 5 and the existing Core Ultra 7 HX chips.
Lenovo’s Legion 5i 2026 page showed the processor paired with GeForce RTX 5070 graphics, a 15.3-inch 2560 x 1600 OLED panel at 165 Hz, 32GB of memory, and 1TB of storage. Problem: Well, this laptop is/was listed at $4000.
| Intel Core Ultra 200HX (Arrow Lake/Refresh) | |||||
|---|---|---|---|---|---|
| VideoCardz.com | Cores (P+E) | Max CPU Clock | Power (TDP/Max) | iGPU Xe-cores | iGPU max freq |
| Core Ultra 9 290HX Plus🆕 | 24 (8+16) | 5.5 GHz | 55 W / 160 W | 4 | 2.0 GHz |
| Core Ultra 9 285HX | 24 (8+16) | 5.5 GHz | 55 W / 160 W | 4 | 2.0 GHz |
| Core Ultra 9 275HX | 24 (8+16) | 5.4 GHz | 55 W / 160 W | 4 | 1.9 GHz |
| Core Ultra 9 270HX Plus 🆕 | 20 (8+12) | 5.3 GHz | 55 W / 160 W | 4 | 1.9 GHz |
| Core Ultra 7 265HX | 20 (8+12) | 5.3 GHz | 55 W / 160 W | 4 | 1.9 GHz |
| Core Ultra 7 255HX | 20 (8+12) | 5.2 GHz | 55 W / 160 W | 4 | 1.85 GHz |
| Core Ultra 7 251HX 🆕 | 18 (6+12) | 5.1 GHz | 55 W / 160 W | 3 | 1.8 GHz |
| Core Ultra 5 245HX | 14 (6+8) | 5.1 GHz | 55 W / 160 W | 3 | 1.9 GHz |
| Core Ultra 5 235HX | 14 (6+8) | 5.1 GHz | 55 W / 160 W | 3 | 1.8 GHz |
Source: Intel
