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Ryzen 3 5400U APU inside HP ProBook x360 435 G8 endures a false start against the AMD Ryzen 3 4300U on Geekbench but base clock performance gives a sign of things to come

The HP ProBook x360 435 G8 can be configured with up to 32 GB DDR4-3200 SDRAM. (Image source: HP)
The HP ProBook x360 435 G8 can be configured with up to 32 GB DDR4-3200 SDRAM. (Image source: HP)
The Zen 3-based AMD Ryzen 3 5400U has popped up on Geekbench as part of an HP ProBook x360 435 G8 laptop. The Cezanne Ryzen 5000 part is seemingly restricted to a maximum clock of 2.60 GHz, which leaves a mixed impression against the older Ryzen 3 4300U. However, the results at base clock rate are a sign of good things to come.
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More can be expected from the AMD Ryzen 3 5400U that recently turned up on Geekbench as part of a new HP ProBook x360 435 G8 laptop. The test results were 888 points in the single-core run and 3,676 points in the multi-core test. When placed against results we have measured with the previous-generation Ryzen 3 4300U, a fair initial response would be disappointment, especially as the Ryzen 3 5400U is a 4-core, 8-thread processor while the older Renoir chip does not support simultaneous multithreading and is limited to being a 4-core, 4-thread part.

The differences between the Zen 3 Cezanne representative and the Zen 2 Renoir chip are striking in both tests. The Ryzen 3 4300U is only -9.41% behind in the multi-core test, which is surprising considering the generous IPC gains one can expect from Zen 3 parts over Zen 2 SKUs, and the Ryzen 4000 processor is even +15.65% ahead of the Ryzen 3 5400U in the single-core test. You would be forgiven for thinking that the Ryzen 5000 chip in this thin and light HP ProBook x360 435 G8 laptop was seriously underperforming.

However, the Ryzen 3 4300U was in a 14-inch Acer Swift 3 laptop that had sufficient system performance to allow the Zen 2 chip to operate at its boost clock of 3.80 GHz. The figures from Geekbench for the Zen 3 processor are from a very early sample (stepping level 0) that is trying to take on a rigorous benchmark test at its base clock of 2.60 GHz. So if the Ryzen 3 5400U can produce these kinds of scores while being artificially hamstrung, imagine what it might produce once further refinements are in place and it can utilize its reported boost clock of 4.0 GHz. Certainly a good sign for future benchmark runs.

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Geekbench 5.3
64 Bit Multi-Core Score
AMD Ryzen 3 5400U @2.60 GHz max. (unofficial)
3676 Points ∼100%
Average AMD Ryzen 3 4300U
3330 Points ∼91%
64 Bit Single-Core Score
Average AMD Ryzen 3 4300U
1027 Points ∼100%
AMD Ryzen 3 5400U @2.60 GHz max. (unofficial)
888 Points ∼86%
Ryzen 3 5400U. (Image source: Geekbench)
Ryzen 3 5400U. (Image source: Geekbench)

Source(s)

Geekbench & @TUM_APISAK & HP (pdf file)

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Daniel R Deakin
Daniel R Deakin - Managing Editor News - 2217 articles published on Notebookcheck since 2012
My interest in technology began after I was presented with an Atari 800XL home computer in the mid-1980s. I especially enjoy writing about technological advances, compelling rumors, and intriguing tech-related leaks. I have a degree in International Relations and Strategic Studies and count my family, reading, writing, and travel as the main passions of my life. I have been with Notebookcheck since 2012.
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> Notebook / Laptop Reviews and News > News > News Archive > Newsarchive 2021 01 > Ryzen 3 5400U APU inside HP ProBook x360 435 G8 endures a false start against the AMD Ryzen 3 4300U on Geekbench but base clock performance gives a sign of things to come
Daniel R Deakin, 2021-01-23 (Update: 2021-01-23)