Tech

AMD launches the Ryzen 9 7945HX, the “world’s fastest” Mobile CPU

The Ryzen 9 7945HX is the top of the range of the Ryzen 7045 HX series of laptop processors. AMD has just announced its availability ensuring that it is the fastest Mobile CPU on the market.

AMD presented at CES in January the new processing platform for laptops, Ryzen 7000 Mobile, direct competition with Intel’s Raptor Lake also presented at the Las Vegas fair. platform includes five distinct series to cover the entire product range.

If the series for the low and mid-range include too much “rehash”, combining previous CPU and GPU architectures, the Ryzen 7045 HX are completely new and are based on the latest AMD architecture, ZEN 4, whose premiere we saw in the fall with the desktop models and that AMD also expanded at CES.

Ryzen 7045HX

AMD’s highest performing series of notebooks is intended for the best gaming rigs and professional content creators. Under the code name “Dragon Range”, it is manufactured in 5nm technological processes and has all the technology of ZEN4, with versions of up to 16 cores and 32 native processing threads working with work frequencies above 5 GHz and with an unlocked multiplier to facilitate overclocking. They include a whopping 80 Mbytes of cache (L2+L3).

They support DDR5 memories and new connectivity standards such as USB4 that compete in performance with Intel’s Thunderbolt 4. Like the rest of the “Mobile” processors, they have integrated graphics, but only with two RDNA2 compute units. In this product range it is understandable since this type of CPU will always be combined with dedicated graphics. Its TDP consumption is at least 55 watts and to begin with they have been marketed in four Ryzen 9, 7 and 5 versions:

  • Ryzen 9 7945HX: 16/32 cores/threads. Frequency from 2.5 to 5.4 GHz. 80 MB cache. cTDP 55-75W
  • Ryzen 9 7845HX: 12/24 cores/threads. Frequency from 3 to 5.2 GHz. 76 MB cache. cTDP 45-75W
  • Ryzen 7 7745HX: 8/16 cores/threads. Frequency from 3.6 to 5.1 GHz. 40 MB cache. cTDP 45-75W
  • Ryzen 5 7645HX: 6/12 cores/threads. Frequency from 4 to 5 GHz. 38 MB cache. cTDP 45-75W

Ryzen 9 7945HX, the star of the series

AMD claims that its top of the range is the most powerful mobile processor on the planet. It is the only one in the series that includes 16 cores native processing (32 threads), double that of its previous generation flagship Ryzen 6000, which it outperforms by between 41% and 211%.



Clearly, Zen 4 cores provide significant performance improvements over last-generation chips, but AMD has also benchmarked it against current direct competition, Intel’s top-of-the-line laptop Core i9-13950HX, which beats at tasks like gaming according to AMD, with a 10% more performance on average and winning in 26 out of 31 games tested.

We’ll have to wait for third-party testing to find out, but AMD is aiming high with this Ryzen 9 7945HX and the other three models in the series. The company expects its release this week on high-end gaming laptops like the ASUS Scar G17, Strix SCAR, Strix G17, and Zephyrus Duo; the Alienware M16 and M18 or the Legion 5 and 7 Pro from Lenovo. More equipment will arrive in the coming weeks, like others already announced by MSI.

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