The AMD Ryzen 7 5800U is an upcoming Ryzen 5000 series mobile APU based on Zen 3 architecture, and therefore it is classed as a Cezanne chip and should offer greater performance than its fellow Lucienne Zen 2 parts (that are basically a Renoir Refresh). A sample has appeared on both CPU-Z and Cinebench, as reported by Uniko’s Hardware (in Chinese; via VideoCardz). The single-thread and single-core results produced by the Ryzen 7 5800 will have shoppers clamoring for a thin and light laptop featuring the processor, but the multi-core results were clearly hampered by some unknown issue.
The Cinebench single-core results for the Ryzen 7 5800U show a slight performance increase over the Ryzen 7 4800U: R20 +5.56%; R23 +6.15% (against median scores). The 8-core Ryzen 5000 processor clocks at 2.0 GHz to 4.4 GHz and has an L3 cache of 16 MB compared to the Renoir part with 1.8 GHz to 4.2 GHz and 8 MB Level 3 cache. However, the multi-core results for the AMD Ryzen 7 5800U are a mixed bag when compared to the Ryzen 7 4800U (R20: +10.88%; R23: -4.47%), with VideoCardz opining that the tested laptop is artificially restricting the Zen 3 chip or there is an SMT issue with this sample.
The multithread result for the Ryzen 7 5800U in CPU-Z reinforces the possibility that the chip is being limited and will likely produce better results in later benchmarks, as it only scores 3,812 points here, which is a poor result for a 16-thread Ryzen processor. But the single-thread score of 592 points puts the 25 W part ahead of the 125 W Intel Core i9-10900K that has 584 points in CPU-Z’s performance chart. With benchmark results like that, a thin and light laptop sporting the Ryzen 7 5800U could offer the kind of performance that was previously limited to desktop PCs. It also puts a big dent in Team Blue’s perceived single-thread/single-core superiority.
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Cinebench R20 | |
CPU (Single Core) | |
Median Intel Core i9-10900K (493 - 532, n=3) | |
AMD Ryzen 5800U leak | |
Median AMD Ryzen 7 4800U (474 - 488, n=4) | |
CPU (Multi Core) | |
Median Intel Core i9-10900K (5825 - 6381, n=3) | |
AMD Ryzen 5800U leak | |
Median AMD Ryzen 7 4800U (2943 - 3306, n=4) |
Cinebench R23 | |
Single Core | |
Median Intel Core i9-10900K | |
AMD Ryzen 5800U leak | |
Median AMD Ryzen 7 4800U (1231 - 1240, n=3) | |
Multi Core | |
Median Intel Core i9-10900K | |
AMD Ryzen 5800U leak | |
Median AMD Ryzen 7 4800U (7558 - 9762, n=3) |
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Source(s)
Uniko's Hardware (in Chinese) via VideoCardz
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