AMD Ryzen 5 PRO 8640HS vs AMD Ryzen Embedded 9900X Comparison

The Verdict

The database records two distinctly positioned AMD processors. The Ryzen 5 PRO 8640HS is a mobile part with a complete benchmark record, while the Ryzen Embedded 9900X has no recorded benchmark scores in the database, making direct numerical comparison impossible. For the mobile chip, the data shows an 80th percentile ranking among all CPUs, with an average benchmark score of 28,478. Its nearest rivals are the Intel Xeon E-2436 (28,530, 0.2% faster), the AMD Ryzen 7 PRO 6850HS (28,549, 0.2% faster), and the Intel Core 5 220H (28,574, 0.3% faster), placing it effectively at parity with those parts. The Embedded 9900X sits at the 50th percentile, but with no scores recorded, that ranking cannot be interpreted as a performance measurement. Buyers seeking a verified, energy-efficient mobile processor should select the 8640HS. Buyers considering the Embedded 9900X must rely on its architectural specifications alone, as the database contains no measured results for it.

Architecture Differences

The Ryzen 5 PRO 8640HS uses the Zen 4 architecture with the Hawk Point codename, built on a 4 nm TSMC process. It integrates 6 cores and 12 threads, with a base clock of 3.50 GHz and a boost clock of 4.90 GHz. The thermal design power is 28 watts, fitting the mobile segment. Its cache layout includes 64 KB of L1 per core, 1 MB of L2 per core, and 16 MB of shared L3 cache. The processor occupies a 178 mm² die with 25,000 million transistors. It uses the AMD Socket FP7 interface, supports dual-channel DDR5 memory with 89.6 GB/s bandwidth, and provides PCIe Gen 4 with 20 CPU lanes. Integrated graphics come from the Radeon 760M. The multiplier is locked, and the part numbers are 100-000001354 (FP7r2) and 100-000001382 (FP7).

The Ryzen Embedded 9900X belongs to the 9000 series with the Granite Ridge codename, using Zen 5 architecture on the same 4 nm TSMC process. It provides 12 cores and 24 threads, with a base clock of 4.40 GHz and a boost clock of 5.60 GHz. The thermal design power is 120 watts, targeting the desktop segment. Cache amounts differ substantially: 80 KB of L1 per core, 1 MB of L2 per core, and 64 MB of shared L3 cache, four times the L3 of the mobile chip. The die is split into two 70.6 mm² pieces, totaling 16,630 million transistors. It uses the AMD Socket AM5, supports dual-channel DDR5 at 89.6 GB/s, and provides PCIe Gen 5 with 24 CPU lanes. Integrated graphics are listed as Radeon Graphics. The multiplier is unlocked, and the part number is 100-000000662E. Both processors support ECC memory, but the Embedded 9900X offers higher clocks, double the cores and threads, more L3 cache, newer PCIe generation, and more PCIe lanes.

Head-to-Head Benchmarks

The head-to-head benchmark table in the database is empty, and the wins counters for both processors are zero. Consequently, there are no direct measured comparisons between the Ryzen 5 PRO 8640HS and the Ryzen Embedded 9900X. The only available benchmark data belongs to the 8640HS. In Cinebench R23, it scores 18,104 in multi-core and 2,555 in single-core. In Cinebench R20, the scores are 7,603 multi-core and 1,073 single-core. Cinebench R15 results are 1,824 multi-core and 257 single-core. PassMark tests show a multi-thread score of 21,465, a single-thread score of 3,561, integer math at 69,839, floating point math at 43,019, data encryption at 14,962, data compression at 246,446, extended instructions at 18,507, find prime numbers at 71, physics at 1,043, and random string sorting at 30,235.

For the Embedded 9900X, no benchmark scores exist in the database. The percentile ranking of 50 appears alongside an average benchmark score of zero, which confirms the absence of recorded measurements. Without scores, no performance statements can be made for the Embedded part. The architecture differences, such as the higher boost clock of 5.60 GHz and the doubled core count, indicate potential for higher throughput, but the database provides no measured confirmation. Any comparison between the two processors must remain qualitative, based on specifications, not on benchmark results.

FAQ

Q: Does the Ryzen Embedded 9900X have any recorded benchmark scores?

A: No. The database shows an empty benchmark list for the Embedded 9900X, with an average benchmark score of zero and no nearest rivals listed.

Q: How does the Ryzen 5 PRO 8640HS rank against all CPUs?

A: The 8640HS sits at the 80th percentile among all CPUs, with an average benchmark score of 28,478.

Q: Which processor has more cores and threads?

A: The Ryzen Embedded 9900X has 12 cores and 24 threads, while the Ryzen 5 PRO 8640HS has 6 cores and 12 threads.

Q: What are the clock speed differences between the two?

A: The 8640HS has a base clock of 3.50 GHz and a boost clock of 4.90 GHz. The Embedded 9900X has a base clock of 4.40 GHz and a boost clock of 5.60 GHz.

Q: Do both processors support ECC memory?

A: Yes, both the Ryzen 5 PRO 8640HS and the Ryzen Embedded 9900X list ECC memory support as true.

Q: Which processor has more L3 cache?

A: The Ryzen Embedded 9900X has 64 MB of shared L3 cache, compared to 16 MB of shared L3 cache on the Ryzen 5 PRO 8640HS.

Where Each One Wins

The Ryzen 5 PRO 8640HS wins in the mobile segment, with a 28-watt thermal design power that suits thin-and-light laptops. Its measured performance places it at the 80th percentile, with a multi-thread PassMark score of 21,465 and a single-thread score of 3,561. The Cinebench R23 multi-core score of 18,104 indicates strong sustained throughput for a 6-core part. The integrated Radeon 760M graphics provide a complete package without a discrete GPU. The 4 nm process and 25,000 million transistors on a 178 mm² die show a dense, power-efficient design. ECC memory support adds reliability for professional workloads. The locked multiplier means no overclocking, but the recorded scores already demonstrate competitive performance against its nearest rivals, all within 0.3% of its average score.

The Ryzen Embedded 9900X wins on raw specification headroom. The 12-core, 24-thread configuration with a 5.60 GHz boost clock and 64 MB of L3 cache offers a larger compute envelope. The 120-watt thermal design power allows sustained high-clock operation across more cores. PCIe Gen 5 with 24 lanes doubles the per-lane bandwidth potential compared to the 8640HS's Gen 4 with 20 lanes. The dual-chiplet design with 2x 70.6 mm² dies indicates a scalable architecture. The unlocked multiplier permits user-controlled overclocking. The desktop segment positioning and AM5 socket support broader cooling solutions. However, the database contains no benchmark results for this processor, so its actual performance remains unverified in the recorded data. Buyers choosing the Embedded 9900X do so on the strength of its specifications, not on measured outcomes.

The 8640HS is the only one of the two with verified scores, making it the sole processor with quantitative performance evidence in the database. The Embedded 9900X offers more cores, higher clocks, more cache, and newer I/O, but none of that is backed by recorded measurements. For applications needing proven mobile performance, the 8640HS has the data. For applications needing maximum threaded capacity and PCIe Gen 5 connectivity, the Embedded 9900X has the specifications, but no numbers to confirm its capabilities.