AMD Ryzen 5 7640U “Pheonix” Chip appears in its first laptop benchmarks

The first AMD Ryzen 5 7640U “Phoenix” CPU benchmarks for thin and light laptops have leaked, and they show an impressive improvement over its predecessor. While AMD has announced its Ryzen 7040 Phoenix CPU lineup for laptops, it only lists the HS and H-series variants, with no mention of the U-series.

The red team will be releasing the U-series parts in laptops later this quarter, and one variant has already appeared in the Geekbench database. In fact, AMD confirmed this as one of the first Ryzen 7000 CPUs when it announced its new laptop branding scheme in 2022.

AMD Ryzen 9 7945HX appears to have 10% higher gaming performance compared to Intel's Core i9-13950HX

The AMD Ryzen 5 7640U will feature the most recent Zen 4 core architecture built on the 4nm process node.

The CPU will have six cores, twelve threads, six megabytes of L2 cache, and sixteen megabytes of L3 cache. Geekbench lists the chip’s clock speeds as 3.5 GHz base and around 4.9 GHz boost clocks.

Because it belongs to the U-series, it will be a 15-28W part. The chip will also include an RDNA 3 iGPU, a Radeon RX 760M with 8 compute units, and an RDNA 3 iGPU. The clock speed is unknown, but it will almost certainly be lower than the 2.6 GHz clocks found on the HS/H variants.

AMD Ryzen 5 7640U
credit: wccftech

The AMD Ryzen 5 7640U appears to have been tested by AMD, as it was discovered on the Mayan-PHX reference evaluation platform for the Phoenix Ryzen 7040 CPUs. The platform had 16 GB of memory, but we don’t know whether it was LPDDR5X or standard LPDDR5. We also don’t know what TDP it runs at, which could result in significantly higher or lower scores depending on what the OEM chooses.

AMD Ryzen 5 7640U “Phoenix” CPU is unquestionably faster than its predecessor. Given that the average Ryzen 5 6600U scores around 1600 points in single-core and 5500 points in multi-core tests, the chip achieves around 25% better performance in single-core and 60% better performance in multi-core. The CPU also outperforms the Ryzen 9 6900HX in single-core tests but falls short in multi-core tests due to the former having more cores and threads.

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