AMD Ryzen 5 PRO 8640U

The AMD Ryzen 5 PRO 8640U is a 6-core, 12-thread processor built on the Zen 4 architecture (codenamed Hawk Point) and manufactured on a 4nm process at TSMC. It runs at a base clock of 3.50 GHz and a boost clock of 4.90 GHz, with a 28W TDP, and is paired with an integrated Radeon 760M GPU. The chip includes 16 MB of shared L3 cache and 1 MB of L2 per core, supports dual-channel DDR5 memory with 89.6 GB/s bandwidth, and offers ECC memory support. In the benchmark database, it ranks in the 87th percentile among all CPUs, with an average benchmark score of 31002.

Who Should Consider It

For gaming, the Ryzen 5 PRO 8640U delivers strong per-core performance. Its PassMark single-thread score of 3792 and Cinebench R23 single-core score of 2821 indicate high responsiveness in lightly threaded tasks, which many game engines rely on. The integrated Radeon 760M provides a built-in graphics solution, though no dedicated GPU benchmarks are available in the data; for titles that do not demand discrete graphics, the CPU’s single-thread capability can help maintain frame pacing. Users who pair it with a discrete GPU will find the per-core strength sufficient for most modern game logic.

For content creation and multi-threaded workloads, the processor shows robust scaling. The Cinebench R23 multi-core score of 19982 and PassMark multi-thread score of 23509 reflect capable throughput for rendering, encoding, and compilation. The PassMark integer math score of 76410 and floating point math score of 46851 further indicate strong computational headroom for simulation and numerical analysis. Data compression (267101) and encryption (16543) scores are particularly high, suggesting that the chip handles archival, backup, and secure communication tasks efficiently. The 6-core/12-thread design is not as expansive as higher-core parts, but for typical creation workloads on a 28W platform, the performance is competitive.

For office and productivity environments, the combination of high single-thread and multi-thread scores covers everything from spreadsheet recalculation to virtual meetings. The ECC memory support (true) adds reliability for data-sensitive tasks, and the 28W TDP ensures that the CPU can be integrated into compact, low-noise systems. The market segment is listed as "Server/Workstation," which indicates a design intent toward professional and business use, though the power envelope also suits premium thin-and-light laptops. Overall, the Ryzen 5 PRO 8640U is best suited for users who need a balance of per-core speed and multi-threaded capacity without sacrificing power efficiency.

How It Compares

The nearest rival, the Intel Core i7-13700TE, posts an average score of 31093, which is 0.3% higher than the Ryzen 5 PRO 8640U’s 31002. This delta is negligible, placing the two processors in the same performance tier. The Ryzen 5 PRO 8640U’s multi-thread scores are comparable, and the single-thread results are within the same range, making either choice largely dependent on platform features rather than raw performance.

The AMD Ryzen 7 8840HS, with an average score of 31111, is 0.4% ahead. This is a marginal difference that would be imperceptible in real-world applications. Both chips share the same Zen 4 architecture, and the Ryzen 5 PRO 8640U’s lower core count (6 vs. presumably more in the 8840HS, though not specified) is offset by its efficient design. The benchmark data shows no meaningful gap between the two.

The AMD Ryzen 5 7645HX achieves an average score of 31213, which is 0.7% higher. This is still within the noise of typical benchmark variance. The 7645HX is a higher-TDP part in the same product family, but the Ryzen 5 PRO 8640U holds its own despite its lower power envelope. For most workloads, users would not notice a difference.

The Intel Core i5-13600H leads the group with an average score of 31305, 1% higher than the Ryzen 5 PRO 8640U. This is the largest delta among the four rivals, yet still a small margin. The i5-13600H is a mainstream laptop processor, and the Ryzen 5 PRO 8640U’s performance is within 1% of it, demonstrating that the 28W AMD part competes effectively with higher-power Intel offerings in synthetic benchmarks.

Single-Thread vs Multi-Thread Behavior

The Ryzen 5 PRO 8640U shows a clear split between single-thread and multi-thread performance. In Cinebench R23, the single-core score is 2821, while the multi-core score is 19982. The ratio between these two scores indicates that the processor scales well with additional threads, leveraging its 6 cores and 12 threads. The PassMark results tell a similar story: single-thread 3792 versus multi-thread 23509. The multi-thread score is more than six times the single-thread score, which is typical for a 6-core/12-thread design.

For real-world use, this means that applications with low thread counts—such as web browsers, office suites, and many games—will benefit from the high single-thread scores, ensuring snappy interaction and low latency. Conversely, workloads that can utilize all threads, such as video encoding, 3D rendering, and data processing, will see substantial throughput gains from the multi-thread capability. The PassMark data compression score of 267101 and encryption score of 16543 further highlight the processor’s ability to handle parallelizable tasks efficiently.

The single-thread performance is particularly notable given the 28W TDP. Achieving a PassMark single-thread score of 3792 at this power level suggests a well-tuned design. The multi-thread scores, while not class-leading, are respectable for the segment, placing the chip in the same league as processors with higher TDPs, as evidenced by the nearest rival comparisons.

FAQ

Q: What is the TDP of the AMD Ryzen 5 PRO 8640U?

A: The TDP is 28W.

Q: Does the processor support ECC memory?

A: Yes, ECC memory is supported (true).

Q: What integrated graphics does it include?

A: It includes the Radeon 760M.

Q: What socket does it use?

A: It uses AMD Socket FP7.

Q: What is the boost clock speed?

A: The boost clock is 4.90 GHz.

Q: What memory type is supported?

A: It supports DDR5 memory with a dual-channel interface and a bandwidth of 89.6 GB/s.

Power and Thermals

The Ryzen 5 PRO 8640U is a 28W TDP processor, placing it in the efficient, low-power segment of the market. This power envelope is well suited for thin-and-light laptops, mini PCs, and compact workstations where thermal headroom is limited. The 4nm process node from TSMC contributes to the chip’s efficiency, allowing it to achieve high clock speeds (up to 4.90 GHz) without exceeding the 28W budget. The die size is 178 mm² and the transistor count is 25,000 million, reflecting a dense, modern design.

Given the 28W TDP, a standard low-profile air cooler or a well-designed laptop thermal module should suffice to maintain sustained performance. The multiplier is locked, so overclocking is not an option, but the base and boost clocks are already high for the power class. The memory bandwidth of 89.6 GB/s and PCIe Gen 4 support (20 lanes) further enhance the platform’s efficiency. The market segment classification as "Server/Workstation" is notable, as it suggests the processor is intended for professional environments where reliability and power efficiency are prioritized over raw performance. The production status is active, and the release date is April 15, 2024, indicating a current-generation product.