AMD Ryzen 5 5600XT vs AMD Ryzen 5 PRO 8640HS Comparison

FAQ

Q: Which processor shows a higher average benchmark score?

A: The AMD Ryzen 5 5600XT records an average benchmark score of 28940, while the AMD Ryzen 5 PRO 8640HS records 28478. The desktop chip sits 0.2% above the Intel Core i9-13900H and 0.2% above the Intel Core i5-12600H in its nearest rival group, whereas the mobile chip sits 0.3% above the AMD Ryzen 7 PRO 6850U and 0.2% below the Intel Xeon E-2436.

Q: How do the two compare in Cinebench R23 multi-core performance?

A: The Ryzen 5 5600XT scores 18724 in Cinebench R23 multi-core, which is 3.4% ahead of the Ryzen 5 PRO 8640HS at 18104. This is one of several Cinebench tests where the desktop part leads by a consistent margin.

Q: Which processor wins in PassMark single-thread performance?

A: The Ryzen 5 PRO 8640HS scores 3561 in PassMark single-thread, which is 2.6% ahead of the Ryzen 5 5600XT at 3469. The same result appears under the PassMark singlethread entry.

Q: What is the biggest single benchmark margin between the two?

A: The largest margin is in PassMark find prime numbers, where the Ryzen 5 5600XT scores 143 versus 71 for the Ryzen 5 PRO 8640HS, a 101.4% advantage for the desktop chip. This is by far the most lopsided result in the head-to-head set.

Q: Do both processors support ECC memory?

A: Yes, both the AMD Ryzen 5 5600XT and the AMD Ryzen 5 PRO 8640HS list ECC memory support as true.

Q: Which processor has a higher boost clock?

A: The AMD Ryzen 5 PRO 8640HS has a boost clock of 4.90 GHz, compared to 4.70 GHz for the AMD Ryzen 5 5600XT. However, the 5600XT has a higher base clock at 3.70 GHz versus 3.50 GHz.

The Verdict

The data points to a clear split along workload type. The AMD Ryzen 5 5600XT wins 12 of the 17 head-to-head benchmark comparisons, including all six Cinebench tests and the majority of PassMark workloads. Its wins are particularly strong in prime number finding, physics simulation, and data encryption. The Ryzen 5 PRO 8640HS takes the remaining five comparisons, with notable wins in floating-point math, random string sorting, and single-thread performance.

For a desktop user prioritizing raw multi-threaded throughput, the Ryzen 5 5600XT is the better choice according to the recorded data. Its Cinebench R23 multi-core score of 18724 versus 18104 gives it a 3.4% edge, and its PassMark multithread score of 22283 versus 21465 adds a 3.8% margin. The 5600XT also delivers a substantial 26.7% lead in PassMark physics, a workload that often correlates with simulation and gaming-adjacent tasks.

For a mobile user or anyone constrained by power and thermals, the Ryzen 5 PRO 8640HS makes more sense. Its 28 W TDP is far lower than the 65 W TDP of the 5600XT, and it still manages to win in single-thread performance. The 8640HS also includes integrated Radeon 760M graphics, which the 5600XT lacks entirely, making it a complete package for systems without a discrete GPU.

The average benchmark scores tell a similar story: 28940 for the 5600XT versus 28478 for the 8640HS, a difference of about 1.6%. The 5600XT ranks at the 81st percentile among all CPUs, while the 8640HS ranks at the 80th percentile. These are close overall positions, but the workload distribution favors the desktop part for compute-heavy tasks and the mobile part for efficiency-sensitive scenarios.

Head-to-Head Benchmarks

The Cinebench suite is uniformly favorable to the Ryzen 5 5600XT. In Cinebench R15 multi-core, it scores 1887 against 1824, a 3.5% lead. The single-core R15 result is 266 versus 257, again a 3.5% margin. In R20, the multi-core score is 7864 versus 7603, a 3.4% lead, and the single-core score is 1110 versus 1073, also 3.4%. The R23 results follow the same pattern: 18724 versus 18104 in multi-core and 2643 versus 2555 in single-core, each a 3.4% advantage. These consistent margins across three Cinebench versions indicate a stable architectural advantage for the desktop chip in both lightly threaded and fully threaded rendering workloads.

The PassMark suite reveals a more varied picture. The 5600XT wins PassMark data compression with 257118 versus 246446, a 4.3% margin, and PassMark data encryption with 15944 versus 14962, a 6.6% margin. In PassMark integer math, the 5600XT scores 71063 versus 69839, a modest 1.8% lead. PassMark multithread shows 22283 versus 21465, a 3.8% win for the desktop chip. PassMark physics is a standout: 1322 versus 1043, a 26.7% advantage for the 5600XT. In PassMark find prime numbers, the 5600XT more than doubles the mobile chip's score, 143 versus 71, a 101.4% margin.

The 8640HS wins in several specific workloads. PassMark extended instructions goes to the mobile chip at 18507 versus 17450, a 5.7% lead. PassMark floating-point math favors the 8640HS at 43019 versus 40537, a 5.8% margin. PassMark random string sorting is the largest win for the mobile chip: 30235 versus 26693, an 11.7% lead. PassMark single-thread and singlethread both record 3561 versus 3469, a 2.6% win for the 8640HS.

Overall, the 5600XT wins the majority of comparisons and holds the higher average score, but the 8640HS demonstrates clear strengths in vectorized instruction handling, floating-point throughput, sorting operations, and single-thread responsiveness.

Specification Differences

The two processors differ in several fundamental specifications. The Ryzen 5 5600XT has a base clock of 3.70 GHz and a boost clock of 4.70 GHz, while the Ryzen 5 PRO 8640HS has a base clock of 3.50 GHz and a boost clock of 4.90 GHz. The desktop chip has a TDP of 65 W, while the mobile chip has a TDP of 28 W.

The socket and market segment differ as well. The 5600XT uses AMD Socket AM4 and is classified as a Desktop part. The 8640HS uses AMD Socket FP7 and is classified as Mobile. The 5600XT has an unlocked multiplier, while the 8640HS does not.

Memory support differs significantly. The 5600XT supports DDR4 memory with a memory bandwidth of 51.2 GB/s. The 8640HS supports DDR5 memory with a memory bandwidth of 89.6 GB/s. Both use dual-channel memory buses, and both support ECC memory.

The 5600XT has no integrated graphics, while the 8640HS includes Radeon 760M integrated graphics. Both support PCIe Gen 4 with 20 lanes from the CPU. The release dates differ: the 5600XT was released on 2024-10-30, while the 8640HS was released on 2024-04-15. The part numbers also differ: 100-000001585 for the 5600XT, and 100-000001354(FP7r2) or 100-000001382(FP7) for the 8640HS.

Architecture Differences

The architectural gap between these two parts is substantial. The Ryzen 5 5600XT is built on Zen 3 architecture with the codename Vermeer, while the Ryzen 5 PRO 8640HS uses Zen 4 architecture with the codename Hawk Point. The 5600XT belongs to the 5000 series, and the 8640HS belongs to the 8000 series.

The manufacturing process differs by node generation. The 5600XT uses a 7 nm process with 4,150 million transistors on a 74 mm² die. The 8640HS uses a 4 nm process with 25,000 million transistors on a 178 mm² die. Both are fabricated by TSMC, but the transistor counts and die sizes are dramatically different, reflecting the newer process and more complex design of the mobile chip.

Cache layouts also differ. Both have 64 KB of L1 cache per core. The L2 cache is 512 KB per core on the 5600XT, but 1 MB per core on the 8640HS. The L3 cache is 32 MB shared on the 5600XT, but only 16 MB shared on the 8640HS. The desktop chip compensates for its smaller L2 with a larger L3 pool, while the mobile chip opts for larger per-core L2 and a smaller shared L3.

The 8640HS integrates Radeon 760M graphics, which is a major architectural addition absent from the 5600XT. The mobile chip also carries the PRO designation, indicating a different product positioning, though both remain in active production. The 5600XT is described as Ryzen 5 (Zen 3 (Vermeer)), and the 8640HS as Ryzen 5 (Zen 4 (Hawk Point)), which captures the generational split in both architecture and process technology.