AMD Ryzen 9 5900HX vs AMD Ryzen 9 6900HS Comparison

Head-to-Head Benchmarks

The head-to-head data presents a clear pattern: the AMD Ryzen 9 6900HS wins 21 of 23 recorded comparisons, with the AMD Ryzen 9 5900HX taking only two. The consistency of this result is striking, especially given the 5900HX carries a higher 45W TDP against the 6900HS's 35W TDP.

The largest single margin belongs to the 6900HS in PassMark physics simulation, scoring 1041 against 909, a 14.5% advantage. This is an outlier in scale, suggesting the Zen 3+ architecture handles physics workloads with particular efficiency. The next biggest wins come in the 3DMark suite: 8-thread scores show a 7.8% lead (5830 vs 5406), 16-thread scores a 7.3% lead (6963 vs 6490), and max-thread scores a 7.2% lead (6955 vs 6487). These are meaningful deltas for laptop processors, where thermal constraints usually compress performance differences.

GeekBench multicore also favors the 6900HS by 8.4% (9451 vs 8720), reinforcing the multi-threaded story. CineBench R23 multicore shows a 4.7% advantage (13445 vs 12845), while the single-core variant is 4.4% ahead (1554 vs 1488). The 3DMark single-thread test gives the 6900HS a 3.9% edge (915 vs 881), and 2-thread workloads show a smaller but still positive 2.4% gain (1761 vs 1720).

The 6900HS also wins the PassMark integer math test? No, that is one of the two losses. The 5900HX edges out the 6900HS in PassMark integer math by a razor-thin 0.3% (86735 vs 86449). The other 5900HX win is GeekBench single-core, where it scores 1792 against 1733, a 3.3% margin. These two results are small but notable: they show the older chip retains a slight edge in specific single-threaded and integer workloads.

Beyond those two losses, the 6900HS dominates the remaining PassMark categories. Prime number finding shows a 9.4% lead (58 vs 53), extended instructions 2.7% (20015 vs 19488), multithread 3.7% (23152 vs 22326), data compression 1.8% (292842 vs 287793), floating point math 1.4% (48239 vs 47556), random string sorting 1.6% (30528 vs 30042), and data encryption 0.6% (18303 vs 18188). The single-thread PassMark test also goes to the 6900HS at 3237 vs 3178, a 1.9% gain.

Averaged across all benchmarks, the 6900HS records a 25284 average score against the 5900HX's 24822. Both CPUs sit at the 77th percentile among all CPUs in the database, which contextualizes the head-to-head: these are closely matched parts overall, with the 6900HS consistently ahead but rarely by double digits.

FAQ

Q: Which processor wins more benchmarks?

A: The AMD Ryzen 9 6900HS wins 21 of 23 head-to-head comparisons. The AMD Ryzen 9 5900HX wins only two: GeekBench single-core and PassMark integer math.

Q: How large is the 6900HS's biggest victory?

A: The largest delta is in PassMark physics, where the 6900HS scores 1041 against 909, a 14.5% advantage.

Q: Does the 5900HX have any meaningful single-core advantage?

A: In GeekBench single-core, yes, it leads by 3.3% (1792 vs 1733). However, in the other single-threaded tests, the 6900HS wins: 3DMark single-thread by 3.9%, CineBench R23 single-core by 4.4%, CineBench R15 single-core by 2.1%, and PassMark single-thread by 1.9%.

Q: How do the two compare in average benchmark score?

A: The 6900HS has an average score of 25284, while the 5900HX averages 24822. That is a difference of 462 points, roughly 1.9% in favor of the 6900HS.

Q: Do both processors occupy the same performance percentile?

A: Yes, both are at the 77th percentile among all CPUs in the database.

Q: Are these processors in the same performance class as other recent parts?

A: The 6900HS's nearest rivals include the Intel Core i5-13400F at 25292 (0% delta), Intel Core 5 120 at 25362 (-0.3%), AMD Ryzen 5 5600X3D at 25365 (-0.3%), and AMD Ryzen 7 6800H at 25201 (0.3%). The 5900HX sits near the Intel Core 5 210H at 24872 (-0.2%), Intel Core i7-13620H at 24911 (-0.4%), AMD Ryzen 5 7600X3D at 24728 (0.4%), and AMD Ryzen 7 5700X3D at 24709 (0.5%).

Where Each One Wins

The 6900HS is the all-round performer. Its wins span every category type: 3DMark threaded tests, CineBench multi and single core, GeekBench multicore, PassMark physics, compression, encryption, extended instructions, prime numbers, floating point math, multithread, random string sorting, and single-thread. The data shows no weak spot in the 6900HS profile. Even in the two tests it loses, the margins are tiny: 0.3% in integer math and 3.3% in GeekBench single-core.

The 5900HX wins are narrow and specific. Its GeekBench single-core advantage of 3.3% is the more substantial of the two, and it suggests the older Zen 3 core can still deliver competitive single-thread responsiveness in certain applications. The PassMark integer math win, though only 0.3%, indicates a slight preference for pure integer operations. For workloads that rely heavily on those specific metrics, the 5900HX remains viable.

For multi-threaded rendering, simulation, or physics-heavy tasks, the 6900HS is the clear choice. The 14.5% physics lead alone makes it the better pick for any application that models rigid bodies or particle systems. For general productivity and mixed workloads, the 6900HS maintains a consistent, if modest, edge across nearly every measured category.

Specification Differences

The two processors share the same core and thread counts: 8 cores and 16 threads each. Base clocks are identical at 3.30 GHz. Both use dual-channel memory and lack ECC support. L1 cache is 64 KB per core and L2 is 512 KB per core on both, with 16 MB of shared L3 cache. Both are mobile parts and both are listed as Active in production status.

The differences begin with boost clock: the 6900HS reaches 4.90 GHz, while the 5900HX tops out at 4.60 GHz. TDP also differs significantly, with the 6900HS rated at 35W and the 5900HX at 45W. The 6900HS uses AMD Socket FP7, whereas the 5900HX uses AMD Socket FP6. Memory support diverges: the 6900HS supports DDR5 with 76.8 GB/s bandwidth, while the 5900HX supports DDR4 with 68.3 GB/s.

PCIe capabilities differ as well. The 6900HS offers Gen 4 with 20 lanes (CPU only), while the 5900HX lists Gen 3 without a lane count. Integrated graphics differ: the 6900HS pairs with Radeon 680M, the 5900HX with Radeon Vega 8. The 5900HX has an unlocked multiplier, while the 6900HS does not. The 5900HX also has a recorded release date of January 11, 2021, and a part number of 100-000000300; the 6900HS lists part number 100-000000545100-000000561 with no release date in the database.

Architecture Differences

The 6900HS is built on Zen 3+ architecture under the Rembrandt codename, part of AMD's 6000 series. The 5900HX uses Zen 3 architecture under the Cezanne codename, part of the 5000 series. The process node differs: the 6900HS is fabricated on a 6 nm process, while the 5900HX uses 7 nm. Both are produced by TSMC.

Die size and transistor counts tell an interesting story. The 6900HS has a die size of 208 mm², while the 5900HX is smaller at 180 mm². However, the 5900HX lists 10,700 million transistors, while the 6900HS has no transistor count recorded in the database. The larger die on the newer process suggests a more complex layout, likely due to the integrated Radeon 680M graphics and DDR5 memory controller.

Cache architecture is identical in structure: 64 KB L1 per core, 512 KB L2 per core, and 16 MB shared L3. Neither processor features 3D V-Cache. The 6900HS's shift to DDR5 memory support brings a higher theoretical memory bandwidth of 76.8 GB/s versus 68.3 GB/s for the DDR4-equipped 5900HX. The 6900HS also moves to PCIe Gen 4, doubling the available bandwidth per lane compared to the 5900HX's Gen 3.

The integrated graphics difference is significant. The 6900HS carries Radeon 680M, a generational leap over the Radeon Vega 8 in the 5900HX. Combined with the faster memory subsystem, the 6900HS presents a more modern platform overall, even though both CPUs share the same core count and cache layout.

The Verdict

The data points to the AMD Ryzen 9 6900HS as the stronger processor in nearly every measured category. It wins 21 of 23 benchmarks, achieves a higher average score (25284 vs 24822), and does so at a lower TDP (35W vs 45W). The 6900HS is particularly strong in physics, threaded 3DMark tests, and GeekBench multicore, with leads of 14.5%, 7.8%, and 8.4% respectively.

The 5900HX retains a narrow foothold in GeekBench single-core and PassMark integer math. Users whose workloads depend almost exclusively on those specific tests might prefer the 5900HX, but the margins are thin and the surrounding evidence favors the 6900HS. The 5900HX also offers an unlocked multiplier, a feature absent on the 6900HS, which may matter to users who prioritize overclocking flexibility.

For most laptop buyers, the 6900HS is the data-supported choice. It delivers better performance across a broader range of workloads, uses less power, supports DDR5 memory with higher bandwidth, and includes PCIe Gen 4 connectivity. The 5900HX is a capable alternative for those who need the unlocked multiplier or who specifically value its two benchmark wins, but the recorded measurements consistently favor the newer Zen 3+ part.