3DMark confirms 4.3 GHz boost clock and SMT for AMD Ryzen 9 4900U

The AMD Ryzen 9 4900U appears to have a 4.3 GHz boost clock. (Image source: AMD)
The AMD Ryzen 9 4900U appears to have a 4.3 GHz boost clock. (Image source: AMD)
The Ryzen 9 4900U has appeared on 3DMark again, this time sporting a 4.3 GHz boost clock. Running on an "AMD Majolica-RN" motherboard, the Ryzen 9 4900U supports SMT across its 8 cores. Previously seen on UserBenchmark and advertised with the Yoga Slim 7, AMD is yet to confirm the existence of the Ryzen 9 Renoir APU.
Alex Alderson,

The Ryzen 9 4900U will not go away. Despite not being formally announced, the Ryzen 9 4900U has been benchmarked on 3DMark. Published by @TUM_APISAK, 3DMark reports the Ryzen 9 4900U installed on an "AMD Majolica-RN" motherboard rather than the "AMD Ted3-RN" that UserBenchmark showed last month. Lenovo has been caught stating that the Yoga Slim 7 would support up to an "AMD Ryzen 9 4900U" too, although it has since reverted its UK product listing to up to "AMD Ryzen 7" processors.

According to this new 3DMark listing, the Ryzen 9 4900U has a maximum boost clock of 4.3 GHz, or 100 MHz higher than the Ryzen 7 4800U. Unsurprisingly, the 8 core processor also supports SMT, allowing it to execute up to 16 threads simultaneously. 3DMark reports that the Ryzen 9 4900U has a 1.8 GHz base clock too, but offers no details about TDP or the type of Radeon Graphics with which it has been paired.

However, the Ryzen 9 4900U could actually be the original name for the Ryzen 7 4800U  According to @uzzi38  AMD rebranded the Ryzen 9 4900U to the Ryzen 7 4800U  While we cannot confirm this, Renoir APUs can briefly boost 100 MHz over their maximum turbo clock speed as explained by Opto Crypto. Hence, the Ryzen 7 4800U can reach up to 4.3 GHz, 100 MHz above its advertised value. So, while there may be Ryzen 9 4900U versions of the Yoga Slim 7 out there, they may come to market as Ryzen 7 4800U models, instead. The lack of a Ryzen 9 U-series APU does seem like a lost opportunity though, especially as AMD has already released Ryzen 9 H-series and HS-series SKUs.

(Image source: 3DMark via @TUM_APISAK)


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> Notebook / Laptop Reviews and News > News > News Archive > Newsarchive 2020 05 > 3DMark confirms 4.3 GHz boost clock and SMT for AMD Ryzen 9 4900U
Alex Alderson, 2020-05-11 (Update: 2020-05-11)
Alex Alderson
Alex Alderson - News Editor - @aldersonaj
Prior to writing and translating for Notebookcheck, I worked for various companies including Apple and Neowin. I have a BA in International History and Politics from the University of Leeds, which I have since converted to a Law Degree. Happy to chat on Twitter or Notebookchat.