AMD Ryzen 5 PRO 8640U vs AMD Ryzen Embedded 9950X Comparison

FAQ

Q: How do the core and thread counts compare between the AMD Ryzen 5 PRO 8640U and the AMD Ryzen Embedded 9950X?

A: The Ryzen 5 PRO 8640U has 6 cores and 12 threads, while the Ryzen Embedded 9950X has 16 cores and 32 threads.

Q: What are the clock speed differences?

A: The Ryzen 5 PRO 8640U has a base clock of 3.50 GHz and a boost clock of 4.90 GHz. The Ryzen Embedded 9950X has a base clock of 4.30 GHz and a boost clock of 5.70 GHz.

Q: Which CPU has a higher TDP?

A: The Ryzen Embedded 9950X has a TDP of 170, while the Ryzen 5 PRO 8640U has a TDP of 28.

Q: Do both processors support ECC memory?

A: Yes, both the Ryzen 5 PRO 8640U and the Ryzen Embedded 9950X support ECC memory.

Q: What is the difference in PCIe support?

A: The Ryzen 5 PRO 8640U supports PCIe Gen 4 with 20 lanes (CPU only), while the Ryzen Embedded 9950X supports PCIe Gen 5 with 28 lanes (CPU only).

Q: Are both processors currently in production?

A: Yes, the production status for both the Ryzen 5 PRO 8640U and the Ryzen Embedded 9950X is listed as Active.

The Verdict

The recorded data separates these two processors into distinct roles. The AMD Ryzen 5 PRO 8640U is a mobile processor from the 8000 series with a 28 TDP, designed for efficient operation in laptops. The AMD Ryzen Embedded 9950X is a desktop processor from the 9000 series with a 170 TDP, built for high-performance embedded systems. The Ryzen Embedded 9950X delivers double the cores and threads (16 cores, 32 threads versus 6 cores, 12 threads), higher base and boost clocks (4.30 GHz and 5.70 GHz versus 3.50 GHz and 4.90 GHz), and a larger L3 cache (64 MB versus 16 MB). The data indicates the Ryzen Embedded 9950X is the stronger multi-threaded part, while the Ryzen 5 PRO 8640U is the lower-power mobile option. The benchmark database only contains recorded results for the Ryzen 5 PRO 8640U, so the head-to-head comparison relies on the 8640U's scores against its nearest rivals and the specification differences. The Ryzen 5 PRO 8640U holds an 81st percentile ranking among all CPUs in the database, based on its average benchmark score of 30254. The Ryzen Embedded 9950X has a 50th percentile ranking with no recorded average score. The choice depends on the target platform: the 8640U suits mobile systems with its modest TDP, while the 9950X targets embedded desktop workloads that need more cores and higher clocks.

Head-to-Head Benchmarks

The database lists no direct head-to-head benchmark results between the Ryzen 5 PRO 8640U and the Ryzen Embedded 9950X. The wins count is 0 for both processors. However, the Ryzen 5 PRO 8640U has a full set of recorded benchmark scores. Its Cinebench R23 multicore score is 19982, and its single-core score is 2821. In Cinebench R20, the multicore score is 8392 and the single-core score is 1184. Cinebench R15 shows 2014 for multicore and 284 for single-core. The PassMark results for the 8640U include multithread at 22795, single-thread at 3732, integer math at 74875, floating-point math at 45265, data compression at 260925, data encryption at 15843, extended instructions at 19130, find prime numbers at 78, physics at 1154, and random string sorting at 32114. The Ryzen Embedded 9950X has no recorded benchmark scores in the database, so its performance cannot be directly compared to the 8640U's measured results. The nearest rivals for the Ryzen 5 PRO 8640U include the AMD Ryzen 7 2700X with an average score of 30213 and a delta of 0.1 percent, the AMD Ryzen 7 7736U with an average score of 30364 and a delta of -0.4 percent, the AMD Ryzen 5 7640HS with an average score of 30390 and a delta of -0.4 percent, and the Intel Core i9-11980HK with an average score of 30422 and a delta of -0.6 percent. The 8640U's average benchmark score of 30254 places it within a narrow band around these rivals, roughly 0.1 percent ahead of the Ryzen 7 2700X and about 0.4 to 0.6 percent behind the others.

Specification Differences

The two processors differ across nearly every major specification. The Ryzen 5 PRO 8640U has 6 cores and 12 threads, while the Ryzen Embedded 9950X has 16 cores and 32 threads. Base clock is 3.50 GHz on the 8640U versus 4.30 GHz on the 9950X. Boost clock is 4.90 GHz versus 5.70 GHz. TDP is 28 versus 170. The 8640U uses AMD Socket FP7, while the 9950X uses AMD Socket AM5. The architecture generation differs: the 8640U is Zen 4 with the codename Hawk Point from the 8000 series, while the 9950X is Zen 5 with the codename Granite Ridge from the 9000 series. Both use a 4 nm process node from TSMC, but the transistor counts differ: the 8640U has 25,000 million transistors on a 178 mm² die, while the 9950X has 16,630 million transistors on a 2x 70.6 mm² die. The cache structure is different: the 8640U has 64 KB L1 per core, 1 MB L2 per core, and 16 MB shared L3, while the 9950X has 80 KB L1 per core, 1 MB L2 per core, and 64 MB L3. Memory support is DDR5 dual-channel with 89.6 GB/s bandwidth for both. PCIe support is Gen 4 with 20 lanes on the 8640U versus Gen 5 with 28 lanes on the 9950X. Integrated graphics differ, with the 8640U using Radeon 760M and the 9950X using Radeon Graphics. The 8640U is locked with no unlocked multiplier, while the 9950X has an unlocked multiplier. Market segments are Mobile for the 8640U and Desktop for the 9950X. Release dates differ, with the 8640U released on 2024-04-15 and the 9950X on 2025-10-06. Part numbers are 100-000001318(FP7r2) and 100-000001378(FP7) for the 8640U, and 100-000001277E for the 9950X.

Architecture Differences

The architectural differences are substantial. The Ryzen 5 PRO 8640U uses Zen 4 architecture with the Hawk Point codename, while the Ryzen Embedded 9950X uses Zen 5 architecture with the Granite Ridge codename. Both are built on a 4 nm process at TSMC, but the die layout is different: the 8640U is a monolithic 178 mm² die with 25,000 million transistors, while the 9950X uses a dual-die design of 2x 70.6 mm² with 16,630 million transistors. The L1 cache is larger per core on the 9950X at 80 KB versus 64 KB on the 8640U. L2 cache is identical at 1 MB per core. L3 cache is dramatically larger on the 9950X at 64 MB versus 16 MB on the 8640U. The 9950X also adds PCIe Gen 5 support with 28 lanes, while the 8640U is limited to PCIe Gen 4 with 20 lanes. The 9950X has an unlocked multiplier, indicating overclocking capability, while the 8640U does not. The 9950X's later release date of 2025-10-06 compared to the 8640U's 2024-04-15 reflects the newer Zen 5 generation. Both processors support ECC memory and DDR5 dual-channel memory with the same 89.6 GB/s bandwidth, showing that error-correcting memory is a shared feature across the mobile and embedded segments.

Where Each One Wins

The Ryzen 5 PRO 8640U wins in the mobile segment. Its 28 TDP is far lower than the 9950X's 170, making it suitable for thin-and-light laptops. The recorded benchmark scores for the 8640U place it in the 81st percentile of all CPUs in the database, with an average score of 30254. Its Cinebench R23 multicore score of 19982 and single-core score of 2821 show competitive performance for a mobile chip. In PassMark tests, the 8640U scores 22795 in multithread, 3732 in single-thread, and 74875 in integer math. The 8640U also has a smaller die at 178 mm² versus the 9950X's 2x 70.6 mm², and its integrated Radeon 760M graphics provide a mobile-focused GPU solution. The 8640U uses a lower-power socket (AMD Socket FP7) and is locked, which is typical for mobile processors.

The Ryzen Embedded 9950X wins on raw compute resources. It has 16 cores and 32 threads, double the 8640U's 6 cores and 12 threads. Its base clock of 4.30 GHz and boost clock of 5.70 GHz are higher than the 8640U's 3.50 GHz and 4.90 GHz. The 64 MB L3 cache is four times larger than the 8640U's 16 MB. The 9950X supports PCIe Gen 5 with 28 lanes, offering more bandwidth than the 8640U's Gen 4 with 20 lanes. The unlocked multiplier allows overclocking, which the 8640U cannot do. The 9950X uses the newer Zen 5 architecture with the Granite Ridge codename, compared to the 8640U's Zen 4 Hawk Point. The 9950X also targets the desktop embedded market with AMD Socket AM5, where power draw of 170 is less of a constraint than in mobile systems.

For workloads that need many cores, high clocks, and large cache, the 9950X is the clear choice based on the specification data. For portable systems that require ECC memory support and lower power consumption, the 8640U is the only option of the two, as it is the mobile part. The database shows no direct benchmark comparison, but the 8640U's measured scores against its nearest rivals indicate it performs within a small margin of processors like the Ryzen 7 2700X and Ryzen 7 7736U. The 9950X has no recorded benchmark data, so its actual performance cannot be validated against the 8640U's results. The specification differences, however, point to the 9950X as the higher-end part for multi-threaded and high-clock workloads, while the 8640U delivers a balanced mobile package with a much lower TDP.