AMD Ryzen 7 6800H vs AMD Ryzen 9 5900HX Comparison

Head-to-Head Benchmarks

The recorded data shows a clear overall victory for the AMD Ryzen 7 6800H, which takes 17 of the 23 head-to-head benchmark comparisons, while the AMD Ryzen 9 5900HX manages 6 wins. The margin of victory, however, is not uniform across all workload types, revealing distinct strengths for each processor.

The largest single win for the Ryzen 7 6800H comes in the PassMark physics test, where it scores 1046 against the Ryzen 9 5900HX's 909, a substantial 15.1% advantage. This is followed by a 10.6% lead in Geekbench multicore, with the 6800H scoring 9642 versus 8720 for the 5900HX. These two results indicate that the newer Zen 3+ architecture provides a meaningful uplift in heavily threaded, physics-based workloads and in the Geekbench multicore metric.

The 6800H also shows consistent, if smaller, advantages in rendering and content creation tasks. In Cinebench R23 multicore, it scores 13094 against 12845, a 1.9% lead. The single-core Cinebench R23 result is more decisive, with the 6800H at 1542 versus 1488, a 3.6% improvement. Cinebench R15 multicore shows a 1.4% edge (2136 vs 2106), and the single-core variant is 1% ahead (242.5 vs 240). The PassMark multithread test shows a 3.3% lead (23060 vs 22326), and PassMark extended instructions shows a 3.2% advantage (20114 vs 19488).

The Ryzen 7 6800H also wins in several other PassMark subtests. Data compression shows a 2.1% lead (293929 vs 287793), random string sorting is also 2.1% ahead (30668 vs 30042), and find prime numbers shows a 7.5% advantage (57 vs 53). Floating point math is close, with the 6800H ahead by 0.9% (47989 vs 47556), while data encryption shows a narrow 0.4% edge (18260 vs 18188). In 3DMark, the 6800H wins the 16-thread test by 1.1% (6560 vs 6490) and the max-threads test by 0.7% (6532 vs 6487).

The Ryzen 9 5900HX, despite losing the overall matchup, holds its own in several lighter-threaded and integer-focused tests. Its biggest win is in the 3DMark 4-thread test, where it scores 3285 against 3214, a 2.2% lead. It also wins the 2-thread test by 1.5% (1720 vs 1695) and the 8-thread test by a marginal 0.3% (5406 vs 5392). In 3DMark single-thread, it is 1% ahead (881 vs 872). Geekbench single-core shows a 1.7% advantage for the 5900HX (1792 vs 1761), and PassMark integer math shows a 1.5% lead (86735 vs 85397).

The overall average benchmark score reinforces the 6800H's position, with an average score of 25201 compared to 24822 for the 5900HX. Both processors sit at the 77th percentile among all CPUs in the database, indicating they occupy a similar performance tier overall, despite the 6800H's higher average score and greater number of individual wins.

The Verdict

The data indicates that the AMD Ryzen 7 6800H is the stronger all-around performer for most users. Its 10.6% lead in Geekbench multicore and 15.1% lead in PassMark physics are the most significant deltas in the entire comparison, and its consistent wins across Cinebench, PassMark multithread, and data compression make it the safer choice for content creation, rendering, and general productivity workloads. The 6800H's single-core Cinebench R23 advantage of 3.6% also suggests better performance in lightly threaded applications that rely on the latest instruction set optimizations.

The AMD Ryzen 9 5900HX, however, retains a niche for users who prioritize very light-threaded responsiveness. Its wins in 3DMark 2-thread and 4-thread tests, along with Geekbench single-core and PassMark integer math, point to a processor that remains competitive in older or less parallelized software. The margins are small, mostly between 1% and 2.2%, so the practical difference in everyday light tasks will be minor.

For a user purchasing a laptop today, the Ryzen 7 6800H offers the better balance of results across the benchmark suite. The 5900HX is not obsolete, but its performance profile is narrower, and its wins are confined to specific low-thread scenarios. The 6800H's broader set of victories, including the largest margins in the comparison, make it the recommended choice for anyone whose workload extends beyond basic single-threaded tasks.

Architecture Differences

The two processors come from different generations and use different underlying designs, which explains the benchmark patterns. The AMD Ryzen 7 6800H is part of the 6000 series, built on the Zen 3+ architecture with the codename Rembrandt, and is fabricated on a 6 nm process at TSMC. The AMD Ryzen 9 5900HX belongs to the 5000 series, uses the Zen 3 architecture with the codename Cezanne, and is built on a 7 nm process, also at TSMC. The process node shrink from 7 nm to 6 nm is a notable difference, even though both come from the same foundry.

Both processors feature 8 cores and 16 threads, so the core count is identical. The cache hierarchy is also the same on paper: 64 KB of L1 per core, 512 KB of L2 per core, and 16 MB of shared L3 cache. The base clocks differ slightly, with the 5900HX at 3.30 GHz versus 3.20 GHz for the 6800H, but the boost clock favors the 6800H at 4.70 GHz compared to 4.60 GHz for the 5900HX. The 5900HX has an unlocked multiplier, while the 6800H is locked, a feature that may matter to enthusiasts.

The die size and transistor count show the physical differences. The 5900HX has a die size of 180 mm² and contains 10,700 million transistors. The 6800H's die size is recorded as 208 mm², with no transistor count listed in the database. Despite being on a smaller 6 nm node, the 6800H's die is larger, which likely reflects the integration of newer components and the Radeon 680M integrated graphics, compared to the Radeon Vega 8 in the 5900HX.

Memory support is another major divergence. The 6800H supports DDR5 memory with a dual-channel bus and a memory bandwidth of 76.8 GB/s. The 5900HX uses DDR4, also dual-channel, with a memory bandwidth of 68.3 GB/s. This 8.5 GB/s difference in theoretical bandwidth may contribute to the 6800H's lead in memory-sensitive workloads like data compression and random string sorting. The PCIe support also differs, with the 6800H offering Gen 4 with 20 lanes (CPU only), while the 5900HX is limited to Gen 3.

The sockets are different as well: the 6800H uses AMD Socket FP7, while the 5900HX uses AMD Socket FP6. Neither processor supports ECC memory. The 5900HX has a recorded release date of January 11, 2021, while no release date is listed for the 6800H. Both processors are currently marked as Active in production status.

FAQ

Q: Which processor has the higher boost clock?

A: The AMD Ryzen 7 6800H has a boost clock of 4.70 GHz, while the AMD Ryzen 9 5900HX boosts to 4.60 GHz. The 5900HX has the higher base clock at 3.30 GHz versus 3.20 GHz.

Q: How do the two processors compare in Cinebench R23 multicore performance?

A: The AMD Ryzen 7 6800H scores 13094 in Cinebench R23 multicore, which is 1.9% ahead of the Ryzen 9 5900HX's score of 12845.

Q: Does the Ryzen 9 5900HX win any benchmark categories?

A: Yes. The 5900HX wins 6 of the 23 head-to-head tests, including 3DMark 2-thread, 4-thread, 8-thread, and single-thread tests, as well as Geekbench single-core and PassMark integer math.

Q: What are the memory support differences between the two?

A: The Ryzen 7 6800H supports DDR5 memory with a bandwidth of 76.8 GB/s. The Ryzen 9 5900HX supports DDR4 memory with a bandwidth of 68.3 GB/s. Both use a dual-channel memory bus.

Q: Are both processors based on the same architecture?

A: No. The Ryzen 7 6800H uses Zen 3+ architecture (codenamed Rembrandt) on a 6 nm process. The Ryzen 9 5900HX uses Zen 3 architecture (codenamed Cezanne) on a 7 nm process.

Q: What is the average benchmark score for each processor?

A: The Ryzen 7 6800H has an average benchmark score of 25201, while the Ryzen 9 5900HX has an average benchmark score of 24822. Both sit at the 77th percentile among all CPUs.

Where Each One Wins

The AMD Ryzen 7 6800H is the clear winner in multi-threaded and modern workload categories. Its 10.6% lead in Geekbench multicore and 15.1% lead in PassMark physics make it the better choice for simulation, physics-based rendering, and heavily parallelized productivity software. The 3.6% single-core Cinebench R23 advantage suggests it also handles newer single-threaded applications more efficiently, likely due to the architecture and memory improvements. For rendering with Cinebench, content creation with PassMark multithread, and data-heavy tasks like compression and random string sorting, the 6800H is the stronger pick.

The AMD Ryzen 9 5900HX wins in the lighter-threaded and integer-heavy segments. Its 2.2% lead in the 3DMark 4-thread test and 1.7% lead in Geekbench single-core indicate it remains competitive in older games and applications that do not scale beyond a few threads. The PassMark integer math win, 86735 versus 85397, shows a slight edge in pure integer arithmetic tasks. Users running legacy software or workloads that are not optimized for the newer architecture may find the 5900HX marginally snappier in those specific scenarios.

The overall picture is one of generational progress. The 6800H wins 17 tests, and the 5900HX wins 6, but the 5900HX's wins are concentrated in low-thread tests where the margins are small. The 6800H's wins include the largest deltas in the comparison, making its victories more decisive. For any workload that can use more than four threads, the data favors the Ryzen 7 6800H. For users stuck with single-threaded or dual-threaded applications, the Ryzen 9 5900HX offers a slight edge, but the difference is unlikely to be noticeable in real-world use. The Ryzen 7 6800H is the more versatile processor, and the benchmark data supports that conclusion across the majority of tested scenarios.