Intel Alder Lake-HX shows only marginal performance gains

alder lake mobility chip

Hot on the heels of Intel’s official reveal for its 12th Gen Alder Lake-HX mobile chips, someone actually posted a first review of the Core i7-12800HX. We’ve even received photos of the processor itself, although early performance results don’t show a big leap forward.

This leak is courtesy of the Golden Pig Upgrade Pack team on a Chinese social media website. The tests were carried out on Lenovo Legion Y9000 with identical specifications (apart from the CPU of course).

Photo Alder Lake HX inside a Lenovo laptop.

One laptop had the Core i7-12700H (14 cores) and the other had the Core i7-12800HX (16 cores). Both laptops include 16GB of DDR5-4800 RAM and an Nvidia GeForce RTX 3070 Ti.

We get a glimpse of the 55-watt HX chip with the RTX 3070 Ti chip inside the laptop. The HX is notable for being a big chip, almost as big as the Alder Lake desktop chips.

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There were a number of benchmarks comparing processors to each other. Those hoping for a major performance boost with the HX variant will likely be disappointed as the 12800HX is only marginally faster than the 12700H in some tests. Productivity and gaming benchmarks gave similar or slightly better performance.

Alder Lake HX performance benchmarks.Alder Lake HX performance benchmarks.

Alder Lake HX game performance benchmarks.

Interestingly, the Core i9-12900HX was also compared, although it was not compared to Core i7 chips. It was combined with an RTX 3080 Ti. Unsurprisingly, it’s a powerful chip scoring 1927 (single-core) and 23019 (multi-core) on Cinebench R20.

The main advantage of HX chips is scalability. The HX has sixteen PCIe Gen5 lanes for the GPU and four lanes for the SSD. That means support for up to eight SATA 3.0 connections, 14 USB 2.0 connections, and 10 USB 3.0 connections, with two discrete Thunderbolt controllers.

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Golden Pig Upgrade noted that since power consumption is higher in the HX, only flagship laptops will likely include these processors due to cooling requirements. Intel has announced a number of upcoming laptops with HX chips, including the Dell Prevision 7670, Lenovo Legion 7, and MSI GE77 Raider.

Golden Pig ultimately concludes that the HX is worth it based on the price:

β€œIn the end, of course, it’s the price. With so much foreshadowing, it’s inevitable that the HX55 will be expensive. Even if the base price difference is not taken into account, the power supply and heat dissipation cost of the HX55 is significantly higher than that of the H45. Basically, the price of the i7-12800HX is 1000 yuan more expensive than the i7-12700H of the same mould. It seems very low. If there are manufacturers who can make 500 yuan, I think it’s still worth the extra money.

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It looks like the HX chips will be a huge performance boost over the previous generation, but not huge over the regular H models. That said, this is a very early review and we’ll have to do our own testing to see if the HX chips are worth your money.

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