Another high-performance Arrow Lake HX SKU was quietly released, and the official page has revealed its official specifications.
Intel Core Ultra 7 251HX Launches Officially: 6 Performance and 12 Efficient Cores, Up To 5.1 GHz Turbo, and 3 Xe3 GPU Cores
Intel just silently rolled out a smaller sibling of the Core Ultra 7 255HX. If you remember, the Core Ultra 7 251HX was spotted nearly two weeks ago in some laptop listings, and turns out, it's a real processor indeed. We checked and found that Intel has officially launched it without any announcement, and the product page is live on the official Intel website.
The specifications page reveals that the Core Ultra 7 251HX won't have the same core configuration as its bigger sibling, the 255HX. Instead of a 20-core/20-thread configuration, the Core Ultra 7 251HX settles for an 18-core/18-thread arrangement. Despite this major change, many specifications are identical to the 255HX, including the TDP range (45W-160W), 30 MB L2 and L3 cache, and several such features. However, the biggest change is the reduction of Performance cores as the Ultra 7 251HX brings just 6-P cores instead of 8.
The Efficient core count is the same as the 255HX, and with this configuration, the Ultra 7 251HX falls between the Core Ultra 5 245HX and Core Ultra 7 255HX. The Ultra 7 251HX features up to 5.1 GHz of Max Turbo frequency, which is 100 MHz lower than that of the 255HX. Despite a downgrade in the turbo clock, the 251HX brings a much higher Efficient-core base clock of 2.5 GHz, which is a 700 MHz jump over the 255HX. That said, the P-Core base frequency is now up by 500 MHz as well.
Nonetheless, the 251HX has inferior integrated graphics, featuring just three Xe3 cores instead of four. This essentially not only reduces its graphical prowess but also reduces the overall AI TOPS. The Core Ultra 7 251HX can deliver 30 AI TOPS of performance vs 33 AI TOPS by the Core Ultra 7 255HX.
Intel Arrow Lake-HX "Core Ultra 200" Laptop CPU Lineup:
| CPU Name | Cores / Threads | Base Clocks (P/E Cores) | Max Boost Clocks (P/E) | Single-Core Boost (P/E) | iGPU EUs / Clock | TVB / TVB3 Support |
|---|---|---|---|---|---|---|
| Core Ultra 9 290HX Plus | 8+16 (24/24) | 2.7 / 1.8 GHz | 5.5 / 4.7 GHz | TBD | 64 / 2.0 GHz | Yes / Yes |
| Core Ultra 9 285HX | 8+16 (24/24) | 2.8 / 2.1 GHz | 5.5 / 4.6 GHz | 5.2 / 4.6 GHz | 64 / 2.0 GHz | Yes / Yes |
| Core Ultra 9 275HX | 8+16 (24/24) | 2.7 / 2.1 GHz | 5.4 / 4.6 GHz | 5.3 / 4.6 GHz | 64 / 2.0 GHz | Yes / Yes |
| Core Ultra 7 270HX Plus | 8+12 (20/20) | 2.4 / 1.8 GHz | 5.3 / 4.7 GHz | TBD | 64 / 1.9 GHz | Yes / Yes |
| Core Ultra 7 265HX | 8+12 (20/20) | 2.6 / 2.3 GHz | 5.3 / 4.6 GHz | 5.2 / 4.6 GHz | 64 / 1.9 GHz | Yes / Yes |
| Core Ultra 7 255HX | 8+12 (20/20) | 2.4 / 1.8 GHz | 5.2 / 4.5 GHz | 5.0 / 4.5 GHz | 64 / 1.9 GHz | Yes / Yes |
| Core Ultra 7 251HX | 6+12 (18/18) | 2.9 / 2.5 GHz | 5.1 / 4.5 GHz | 5.1 / 4.5 GHz | 48 / 1.8 GHz | TBD |
| Core Ultra 5 245HX | 6+8 (14/14) | 3.1 / 2.6 GHz | 5.1 / 4.5 GHz | 5.0 / 4.5 GHz | 48 / 1.8 GHz | Yes / No |
| Core Ultra 5 235HX | 6+8 (14/14) | 2.9 / 2.6 GHz | 5.1 / 4.5 GHz | 5.0 / 4.5 GHz | 48 / 1.8 GHz | Yes / No |
News Source: Intel
About the author: Sarfraz Khan is a hardware reporter with a focus on PC components and the builder community. With years of experience writing about PC hardware and laptops, his work has been featured on several reputable technology publications. Sarfraz's hands-on experience is demonstrated through his first-person accounts of using and comparing different hardware configurations, providing practical and relatable insights for everyday users. His technical analysis is respected by peers in the enthusiast community and has been cited by specialized hardware sites such as Germany's Igor's Lab.
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