AMD Ryzen 7 6800HS vs AMD Ryzen 7 PRO 8840U Comparison

The AMD Ryzen 7 6800HS and AMD Ryzen 7 PRO 8840U are both 8-core, 16-thread mobile processors, but the benchmark data reveals they are fundamentally different performers. The 8840U, a newer Zen 4 part, dominates in most compute-heavy tasks, while the 6800HS shows surprising strength in specific data-processing workloads. This analysis breaks down the exact numbers from the head-to-head benchmarks, explains where each chip excels, and examines the architectural shifts that explain the performance gap.

Head-to-Head Benchmarks

The most striking result in the entire dataset is the Cinebench R23 multi-core test. The AMD Ryzen 7 PRO 8840U scores 20,254, while the AMD Ryzen 7 6800HS manages only 11,992. That is a 40.8% advantage for the 8840U, a massive margin that completely reshapes the multi-threaded performance landscape. The single-core R23 result is equally lopsided: the 8840U hits 2,859 versus 1,455 for the 6800HS, a 49.1% lead. These are not incremental gains; they represent a generational leap in raw compute capability.

The Cinebench R15 tests tell a similar story, though the margins are smaller. In R15 multi-core, the 8840U scores 2,041 versus 1,987 for the 6800HS, a 2.6% win. The R15 single-core test shows a larger 18.7% gap, with the 8840U scoring 288 against the 6800HS's 234. The trend is consistent: the newer architecture is faster per clock and scales better across all cores.

However, the passmark suite reveals a fascinating reversal. In data compression, the 6800HS scores 292,698, beating the 8840U's 272,664 by 7.3%. In data encryption, the 6800HS wins again: 18,104 versus 16,441, a 10.1% margin. The 6800HS also leads in extended instructions (20,114 vs 19,132, a 5.1% advantage). These are the only three wins for the 6800HS out of 15 total head-to-head tests, but they are significant because they target specialized instruction paths where the older chip appears to have an unexpected edge.

The 8840U wins the remaining 12 benchmarks, including a commanding 26.3% lead in find prime numbers (76 vs 56). In floating-point math, the 8840U scores 50,746 versus 47,533 for the 6800HS, a 6.3% win. Integer math shows a 4.7% lead (88,339 vs 84,228). PassMark multi-thread results give the 8840U a 4.4% edge (23,850 vs 22,801), while the physics test shows a 14.1% gap in favor of the 8840U (1,174 vs 1,009). Random string sorting favors the 8840U by 8.6% (33,109 vs 30,266), and single-thread performance shows a 12.6% lead for the 8840U (3,641 vs 3,184).

Where Each One Wins

The data paints a clear picture: the AMD Ryzen 7 PRO 8840U is the superior processor for general-purpose and multi-threaded workloads. Its wins in Cinebench R23, both multi-core and single-core, indicate it is the better choice for content creation, 3D rendering, video encoding, and any application that scales with raw CPU throughput. The 49.1% lead in R23 single-core is particularly telling, as it suggests the 8840U will feel snappier in everyday tasks like web browsing, office applications, and light coding. The 14.1% lead in PassMark physics also points to better simulation and physics-processing capability, which matters for engineering software and scientific computing.

The AMD Ryzen 7 6800HS, despite losing the overall war, wins a specific battle in data handling. Its 7.3% lead in data compression and 10.1% lead in data encryption suggest it is optimized for workloads that involve heavy data shuffling and cryptographic operations. This could make the 6800HS a reasonable choice for database management, file archiving, or security-focused tasks where those specific passmark scores translate directly to real-world performance. The 5.1% win in extended instructions further reinforces this niche, as it indicates the 6800HS handles certain complex instruction sets more efficiently.

For all other scenarios, the 8840U is the winner. Its 12.6% lead in single-thread performance, 4.4% lead in multi-thread, and 6.3% lead in floating-point math make it the more versatile and future-proof option. The 6800HS is not a bad processor—it sits in the 83rd percentile of all CPUs, just like the 8840U—but the head-to-head data shows it is outclassed in almost every measurable way.

Architecture Differences

The performance gap is rooted in two distinct architectural generations. The AMD Ryzen 7 6800HS is built on the Zen 3+ architecture, codenamed Rembrandt, using a 6 nm process from TSMC. The AMD Ryzen 7 PRO 8840U uses the newer Zen 4 architecture, codenamed Hawk Point, on a 4 nm process. This process shrink from 6 nm to 4 nm is a primary driver of the 8840U's efficiency and clock speed advantages, allowing it to achieve higher frequencies while maintaining a lower thermal design power.

The clock speeds tell a dramatic story. The 6800HS has a base clock of 3.20 GHz and a boost clock of 4.70 GHz. The 8840U starts at 3.30 GHz base and boosts to 5.10 GHz. That 0.40 GHz higher boost clock directly explains much of the single-core performance difference. The 8840U also operates at a 28 W TDP, compared to the 6800HS's 35 W TDP, meaning it delivers significantly more performance while consuming less power—proof of the architectural efficiency gains.

Cache configurations also differ. Both chips have 64 KB of L1 cache per core and 16 MB of shared L3 cache, but the L2 cache is different: the 6800HS has 512 KB per core, while the 8840U doubles that to 1 MB per core. This larger L2 cache likely contributes to the 8840U's better performance in latency-sensitive tasks. The die size shrinks from 208 mm² on the 6800HS to 178 mm² on the 8840U, even though the 8840U integrates 25,000 million transistors (the 6800HS's transistor count is not listed). The memory bandwidth also improves, from 76.8 GB/s on the 6800HS to 89.6 GB/s on the 8840U, both using dual-channel DDR5.

The integrated graphics differ as well: the 6800HS features a Radeon 680M, while the 8840U ships with a Radeon 780M. Both support PCIe Gen 4 with 20 lanes, and both use the AMD Socket FP7. The 8840U also supports ECC memory, a feature the 6800HS lacks, which is notable for professional and server-adjacent workloads. The 8840U was released on April 15, 2024, whereas the 6800HS has no release date listed in the data.

The Verdict

The data is unambiguous: the AMD Ryzen 7 PRO 8840U is the better processor for nearly every use case. It wins 12 of 15 head-to-head benchmarks, including the most important multi-core and single-core tests. The 40.8% lead in Cinebench R23 multi-core and 49.1% lead in R23 single-core are decisive, and the 8840U achieves this while drawing 7 W less power (28 W vs 35 W TDP). For users who prioritize raw performance, content creation, or scientific computing, the 8840U is the clear choice.

The AMD Ryzen 7 6800HS is not without merit. Its wins in data compression, encryption, and extended instructions show it has a specialized edge in data-centric workloads. If your primary tasks involve large-scale data compression or cryptographic processing, the 6800HS's 7.3% and 10.1% leads, respectively, could be meaningful. However, these are narrow niches, and the 8840U's broader performance dominance makes it the safer recommendation for general users.

Who should pick the 6800HS? Strictly from the data, only those with a specific, proven need for its data-encryption or compression advantages. Who should pick the 8840U? Everyone else. The architecture improvements—4 nm process, higher clocks, doubled L2 cache, and ECC support—make it a superior investment for laptops that need to handle demanding software today and in the future. The 8840U is not just faster; it is more efficient, which is critical for mobile systems where thermals and battery life matter.

FAQ

Q: Which processor is faster in multi-core performance?

A: The AMD Ryzen 7 PRO 8840U is significantly faster. In Cinebench R23 multi-core, it scores 20,254 versus 11,992 for the 6800HS, a 40.8% lead. It also wins in Cinebench R15 multi-core (2,041 vs 1,987) and PassMark multi-thread (23,850 vs 22,801).

Q: Does the older 6800HS win any benchmarks?

A: Yes, it wins 3 out of 15 head-to-head tests. It leads in data compression (292,698 vs 272,664, a 7.3% advantage), data encryption (18,104 vs 16,441, a 10.1% advantage), and extended instructions (20,114 vs 19,132, a 5.1% advantage).

Q: How do the single-core performances compare?

A: The 8840U dominates single-core performance. It scores 2,859 in Cinebench R23 single-core versus 1,455 for the 6800HS, a 49.1% gap. In PassMark single-thread, it leads 3,641 to 3,184, a 12.6% difference.

Q: What are the key architectural differences?

A: The 6800HS uses Zen 3+ architecture on a 6 nm process, while the 8840U uses Zen 4 on a 4 nm process. The 8840U has a higher boost clock (5.10 GHz vs 4.70 GHz), double the L2 cache per core (1 MB vs 512 KB), and higher memory bandwidth (89.6 GB/s vs 76.8 GB/s).

Q: Does the 8840U support ECC memory?

A: Yes, the AMD Ryzen 7 PRO 8840U has ECC memory support, while the AMD Ryzen 7 6800HS does not. This makes the 8840U more suitable for error-sensitive professional workloads.

Q: Which processor has a lower TDP?

A: The AMD Ryzen 7 PRO 8840U has a TDP of 28 W, while the AMD Ryzen 7 6800HS has a TDP of 35 W. The 8840U delivers higher performance with a lower power draw.

Specification Differences

| Specification | AMD Ryzen 7 6800HS | AMD Ryzen 7 PRO 8840U |

|---|---|---|

| Series | 6000 series | 8000 series |

| Architecture | Zen 3+ | Zen 4 |

| Codename | Rembrandt | Hawk Point |

| Process Node | 6 nm | 4 nm |

| Base Clock | 3.20 GHz | 3.30 GHz |

| Boost Clock | 4.70 GHz | 5.10 GHz |

| TDP | 35 W | 28 W |

| L2 Cache | 512 KB (per core) | 1 MB (per core) |

| Memory Bandwidth | 76.8 GB/s | 89.6 GB/s |

| ECC Memory | No | Yes |

| Integrated Graphics | Radeon 680M | Radeon 780M |

| Die Size | 208 mm² | 178 mm² |

| Transistors | Not listed | 25,000 million |

| Release Date | Not listed | 2024-04-15 |

| Part Number | 100-000000545100-000000561 | 100-000001317(FP7r2),100-000001377(FP7) |