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
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.