AMD Ryzen 7 PRO 8840HS vs AMD Ryzen Embedded 9900X Comparison

AMD Ryzen 7 PRO 8840HS and AMD Ryzen Embedded 9900X occupy different segments of the processor landscape, yet the recorded data reveals a clear performance hierarchy. The 8840HS is a mobile part with a full suite of benchmark results, while the 9900X is an embedded desktop processor with no recorded benchmark scores in the database at this time. The analysis below relies strictly on the available measurements and architectural specifications.

Head-to-Head Benchmarks

The database contains no direct head-to-head benchmark comparisons between these two processors. The AMD Ryzen 7 PRO 8840HS has an extensive set of recorded scores across Cinebench and Passmark tests, while the AMD Ryzen Embedded 9900X has no benchmark entries in the database. This absence of data for the 9900X means no direct score deltas can be calculated. The 8840HS, however, shows a strong profile on its own. In Cinebench R23, it records a multicore score of 14784 and a singlecore score of 1724. The older Cinebench R15 test shows a multicore result of 2458 and a singlecore result of 271.5.

The Passmark suite for the 8840HS provides a broader picture. Multithread score sits at 26646, while single-thread reaches 3692. Integer math records 93342, floating point math records 55739, and extended instructions score 22298. Data encryption hits 18838, data compression reaches 311199, and random string sorting lands at 37922. Find prime numbers scores 84, and physics scores 1351. The average benchmark score for the 8840HS is 39603, placing it in the 87th percentile among all CPUs in the database. The 9900X, by contrast, holds a 50th percentile placement and an average score of 0, reflecting the lack of measured results.

Because the 9900X has no scores, the head-to-head section must conclude that the 8840HS is the only processor with measurable performance data. The 9900X cannot be compared numerically, and no wins can be assigned to either side based on benchmark results.

Where Each One Wins

Without recorded benchmark scores for the AMD Ryzen Embedded 9900X, the wins section is determined entirely by the 8840HS data and the architectural specifications of each chip. The 8840HS demonstrates clear strengths in measured workloads. Its Cinebench R23 multicore score of 14784 and Passmark multithread score of 26646 indicate capable parallel processing for mobile applications. The single-thread Passmark score of 3692 and Cinebench R23 singlecore score of 1724 show solid responsiveness for lightly threaded tasks. The 8840HS also delivers strong data compression results at 311199, which points to efficient handling of file archiving and compression workloads.

The 9900X wins on raw specifications that suggest higher ceilings. It offers 12 cores and 24 threads, compared to the 8840HS's 8 cores and 16 threads. Its base clock of 4.40 GHz and boost clock of 5.60 GHz exceed the 8840HS's 3.30 GHz and 5.10 GHz respectively. The 9900X also features a larger L3 cache at 64 MB versus the 8840HS's 16 MB, and it supports PCIe Gen 5 with 24 lanes, while the 8840HS uses PCIe Gen 4 with 20 lanes. These differences imply the 9900X is designed for heavier sustained workloads, but the database lacks measurements to confirm this.

The 8840HS wins on the basis of having validated performance data. It also benefits from a lower TDP of 28 watts, which suits mobile and power-constrained systems. The 9900X, with a TDP of 120 watts, targets desktop embedded applications where power draw is less of a constraint. The 8840HS integrates a Radeon 780M graphics unit, while the 9900X includes a generic Radeon Graphics solution, giving the 8840HS a likely advantage in integrated graphics performance, though no benchmark scores confirm this.

Architecture Differences

The two processors come from different architectural generations and design intents. The AMD Ryzen 7 PRO 8840HS is built on Zen 4 architecture with the codename Hawk Point, part of the 8000 series. The AMD Ryzen Embedded 9900X uses Zen 5 architecture under the codename Granite Ridge, belonging to the 9000 series. Both are manufactured on a 4 nm process at TSMC, but the transistor counts and die sizes diverge significantly. The 8840HS contains 25,000 million transistors on a single 178 mm² die. The 9900X uses 16,630 million transistors spread across two dies, each measuring 70.6 mm², for a combined 141.2 mm².

Cache structures differ substantially. The 8840HS allocates 64 KB of L1 cache per core, 1 MB of L2 per core, and a shared 16 MB L3 cache. The 9900X allocates 80 KB of L1 per core, 1 MB of L2 per core, and a larger shared 64 MB L3. The per-core L1 difference indicates a more generous allocation on the Zen 5 part. Neither processor includes 3D V-Cache. Memory support is identical in type: both use DDR5 with dual-channel buses and 89.6 GB/s of memory bandwidth. Both also support ECC memory.

PCIe connectivity marks a clear generational upgrade. The 8840HS provides PCIe Gen 4 with 20 lanes (CPU only), while the 9900X provides PCIe Gen 5 with 24 lanes (CPU only). The socket changes as well: the 8840HS uses AMD Socket FP7, and the 9900X uses AMD Socket AM5. The 9900X has an unlocked multiplier, while the 8840HS does not. Integrated graphics differ as noted: Radeon 780M on the 8840HS versus Radeon Graphics on the 9900X. The release dates also differ, with the 8840HS released on 2024-04-15 and the 9900X released on 2025-10-06.

FAQ

Q: Which processor has more cores and threads?

A: The AMD Ryzen Embedded 9900X has 12 cores and 24 threads. The AMD Ryzen 7 PRO 8840HS has 8 cores and 16 threads.

Q: What are the recorded benchmark scores for each processor?

A: The 8840HS has complete benchmark data, including a Cinebench R23 multicore score of 14784 and a Passmark multithread score of 26646. The 9900X has no benchmark scores recorded in the database, with an average score of 0.

Q: Which processor has a higher boost clock?

A: The AMD Ryzen Embedded 9900X has a boost clock of 5.60 GHz. The AMD Ryzen 7 PRO 8840HS has a boost clock of 5.10 GHz.

Q: Do both processors support ECC memory?

A: Yes, both the 8840HS and the 9900X support ECC memory.

Q: What is the difference in L3 cache capacity?

A: The 9900X has 64 MB of shared L3 cache. The 8840HS has 16 MB of shared L3 cache.

Q: Which processor uses a newer PCIe standard?

A: The 9900X uses PCIe Gen 5 with 24 lanes. The 8840HS uses PCIe Gen 4 with 20 lanes.

Q: What is the TDP difference between the two?

A: The 8840HS has a TDP of 28 watts. The 9900X has a TDP of 120 watts.

Specification Differences

The following fields differ between the two processors:

• Cores: 8 (8840HS) vs 12 (9900X)
• Threads: 16 (8840HS) vs 24 (9900X)
• Base clock: 3.30 GHz (8840HS) vs 4.40 GHz (9900X)
• Boost clock: 5.10 GHz (8840HS) vs 5.60 GHz (9900X)
• TDP: 28 W (8840HS) vs 120 W (9900X)
• Socket: AMD Socket FP7 (8840HS) vs AMD Socket AM5 (9900X)
• Architecture: Zen 4 (8840HS) vs Zen 5 (9900X)
• Codename: Hawk Point (8840HS) vs Granite Ridge (9900X)
• Generation: Ryzen 7 (Zen 4, Hawk Point) for 8840HS vs Ryzen Embedded (Zen 5, Granite Ridge) for 9900X
• Transistors: 25,000 million (8840HS) vs 16,630 million (9900X)
• Die size: 178 mm² (8840HS) vs 2x 70.6 mm² (9900X)
• L1 cache per core: 64 KB (8840HS) vs 80 KB (9900X)
• L3 cache: 16 MB (8840HS) vs 64 MB (9900X)
• PCIe: Gen 4, 20 lanes (8840HS) vs Gen 5, 24 lanes (9900X)
• Integrated graphics: Radeon 780M (8840HS) vs Radeon Graphics (9900X)
• Market segment: Mobile (8840HS) vs Desktop (9900X)
• Release date: 2024-04-15 (8840HS) vs 2025-10-06 (9900X)
• Multiplier unlocked: false (8840HS) vs true (9900X)
• Part number: 100-000001353(FP7r2), 100-000001381(FP7) for 8840HS vs 100-000000662E for 9900X

Fields that match include manufacturer (AMD), process node (4 nm), foundry (TSMC), memory support (DDR5), memory bus (Dual-channel), memory bandwidth (89.6 GB/s), and ECC support (true).

The Verdict

The data presents a one-sided comparison due to the lack of benchmark scores for the AMD Ryzen Embedded 9900X. The AMD Ryzen 7 PRO 8840HS is the only processor in this pairing with recorded performance measurements. Its 87th percentile placement among all CPUs and an average benchmark score of 39603 indicate a strong mobile processor. The 9900X, with a 50th percentile and zero benchmark results, cannot be validated for performance. Buyers considering the 8840HS have concrete numbers to evaluate. Those evaluating the 9900X must rely on specifications alone, which promise higher core counts, faster clocks, and a newer architecture, but the database confirms no measured outcomes. For clear performance data, the 8840HS is the verified option. For raw specification headroom, the 9900X appears positioned for demanding desktop embedded workloads, but its actual performance remains unmeasured in the database.