AMD Ryzen 5 5600X3D vs AMD Ryzen 9 5900HX Comparison

Head-to-Head Benchmarks

The recorded data shows a clear split between the two processors, with the AMD Ryzen 9 5900HX winning 8 of the 17 head-to-head tests and the AMD Ryzen 5 5600X3D winning 9. However, the margins tell a more nuanced story than the raw win count.

The 5900HX dominates in raw throughput workloads. Its largest victory comes in PassMark integer math, where it scores 86,735 against 65,587 for the 5600X3D, a 32.2% advantage. Floating point math shows a similar pattern, with the 5900HX ahead by 26.9% (47,556 versus 37,464). Random string sorting goes to the 5900HX by 22.1% (30,042 versus 24,597), and data compression favors it by 16.3% (287,793 versus 247,365). Data encryption also lands in the 5900HX's column, with an 18,188 score versus 15,170, a 19.9% edge. Extended instructions follow suit at 14% ahead (19,488 versus 17,102). Even in the multithreaded PassMark suite, the 5900HX edges out a 2% win (22,326 versus 21,888), though this margin is narrow.

The 5600X3D answers back decisively in several key tests. Cinebench R23 multicore is its standout victory: 18,603 versus 12,845, a 31% lead. The single-core Cinebench R23 result is even more lopsided in percentage terms, with 2,626 versus 1,488, a 43.3% gap. Cinebench R15 tells a mixed story, as the 5900HX wins multicore (2,106 versus 1,875, up 12.3%) but loses single-core (240 versus 264, down 9.1%). Geekbench results favor the 5600X3D across the board: multicore by 7.1% (9,386 versus 8,720) and single-core by 14.1% (2,086 versus 1,792).

Two PassMark subtests show extreme divergence. The 5600X3D crushes the prime number finding test, scoring 181 against just 53 for the 5900HX, a 70.7% advantage. PassMark physics also goes heavily to the 5600X3D, 2,453 versus 909, a 62.9% lead. The single-thread PassMark results are nearly identical, with the 5600X3D ahead by only 0.3% (3,187 versus 3,178).

Comparing average benchmark scores, the 5600X3D holds a slight overall edge with an average score of 25,365 against 24,822 for the 5900HX. Both chips sit at the 77th percentile among all CPUs in the database. The 5900HX's nearest rivals by average score include the Intel Core 5 210H (24,872, delta -0.2%) and the Intel Core i7-13620H (24,911, delta -0.4%). The 5600X3D sits alongside the Intel Core 5 120 (25,362, delta 0%) and the Intel Core i7-11700KF (25,423, delta -0.2%).

FAQ

Q: Which processor has the higher average benchmark score?

The AMD Ryzen 5 5600X3D leads with an average score of 25,365, while the AMD Ryzen 9 5900HX averages 24,822.

Q: How large is the single-core performance gap?

The 5600X3D leads in every single-core test in the database. The largest gap is in Cinebench R23 single-core, where it scores 2,626 versus 1,488, a 43.3% advantage. PassMark single-thread is nearly tied at 0.3%.

Q: Does the 5900HX win any multicore tests?

Yes. It wins Cinebench R15 multicore by 12.3% (2,106 versus 1,875) and PassMark multithread by 2% (22,326 versus 21,888). It also dominates in several multi-threaded PassMark subtests like integer math and floating point math.

Q: What is the biggest margin in any benchmark?

The 5600X3D's 70.7% win in PassMark find prime numbers (181 versus 53) is the largest recorded margin. The 5900HX's largest win is 32.2% in PassMark integer math.

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

The 5600X3D wins both tests. In multicore it scores 18,603 against 12,845, a 31% lead. In single-core it scores 2,626 against 1,488, a 43.3% lead. The 5900HX has no Cinebench R23 victory.

Q: Are both processors in the same performance percentile?

Both are at the 77th percentile among all CPUs in the database, despite their different benchmark profiles.

Architecture Differences

Both processors share the Zen 3 architecture and the 7 nm TSMC process node, but they diverge sharply in design goals. The AMD Ryzen 9 5900HX uses the Cezanne codename and targets the mobile segment, while the AMD Ryzen 5 5600X3D uses the Vermeer codename and is a desktop part. The 5900HX packs 8 cores and 16 threads, whereas the 5600X3D has 6 cores and 12 threads. The die size difference is substantial: the 5900HX measures 180 mm², while the 5600X3D comes in at 74 mm². The 5900HX integrates 10,700 million transistors, while the 5600X3D has no transistor figure recorded.

Cache configuration is where the 5600X3D makes its stand. Both processors have 64 KB of L1 per core and 512 KB of L2 per core. The shared L3 differs massively: the 5900HX has 16 MB shared, while the 5600X3D has 96 MB shared. This sixfold L3 advantage is the defining architectural feature of the 5600X3D and explains its strength in cache-sensitive workloads.

The 5900HX includes Radeon Vega 8 integrated graphics, while the 5600X3D has no integrated graphics at all. The 5900HX also has an unlocked multiplier, whereas the 5600X3D's multiplier is locked. The 5900HX carries the part number 100-000000300, and the 5600X3D uses 100-000001176.

The two processors differ in platform connectivity. The 5900HX uses PCIe Gen 3, while the 5600X3D supports PCIe Gen 4 with 20 lanes (CPU only). The 5900HX uses AMD Socket FP6, and the 5600X3D uses AMD Socket AM4. ECC memory support also differs: the 5900HX does not support ECC, while the 5600X3D does.

Specification Differences

The core and thread counts are the most obvious divergence, with the 5900HX offering 8 cores and 16 threads against the 5600X3D's 6 cores and 12 threads. Base clocks are identical at 3.30 GHz for both, but boost clocks differ, with the 5900HX reaching 4.60 GHz and the 5600X3D topping out at 4.40 GHz.

Thermal design power shows a stark contrast. The 5900HX is rated at 45 watts, while the 5600X3D is rated at 105 watts. Memory bandwidth also differs, with the 5900HX at 68.3 GB/s and the 5600X3D at 51.2 GB/s, despite both supporting dual-channel DDR4.

The cache hierarchy diverges only at L3, as noted, with 16 MB shared versus 96 MB shared. The 5900HX has a release date of 2021-01-11, while the 5600X3D came later on 2023-07-06. The 5900HX is listed as Active in production, while the 5600X3D is marked End-of-life. The 5600X3D has a launch MSRP of $229. The 5900HX has no launch MSRP recorded.

Where Each One Wins

The AMD Ryzen 9 5900HX wins in workloads that scale with core count and raw arithmetic throughput. Its 8-core, 16-thread configuration drives wins in integer math, floating point math, data compression, data encryption, extended instructions, and random string sorting. The Cinebench R15 multicore result (2,106 versus 1,875) confirms that in shorter multicore bursts, the 5900HX can pull ahead. PassMark multithread also goes its way, albeit narrowly at 2%. The integrated Radeon Vega 8 graphics make it a self-contained mobile solution, and its lower 45-watt TDP fits power-conscious platforms.

The AMD Ryzen 5 5600X3D wins in single-core performance and in workloads that exploit its 96 MB of shared L3 cache. Every single-core test in the database goes to the 5600X3D, with the Cinebench R23 single-core margin at 43.3% being the most dramatic. The prime number test (181 versus 53) and physics test (2,453 versus 909) both point to a processor that excels in latency-sensitive, cache-heavy calculations. The Cinebench R23 multicore result (18,603 versus 12,845, a 31% lead) shows that despite having fewer cores, the 5600X3D can outpace the 5900HX in sustained long-duration multicore rendering, likely due to its L3 advantage and higher TDP ceiling.

The Verdict

The data points to two distinct use cases. The AMD Ryzen 9 5900HX is the choice for mobile platforms that need broad multithreaded throughput across varied workloads. Its wins in integer math, floating point math, compression, and encryption make it suitable for general productivity and content creation tasks where those operations dominate. The integrated graphics and 45-watt TDP further reinforce its mobile positioning.

The AMD Ryzen 5 5600X3D is the pick for desktop users who prioritize single-core responsiveness and cache-sensitive applications. Its 96 MB L3 cache and higher boost behavior drive decisive wins in physics simulations, prime number calculations, and Cinebench R23, which is a common proxy for rendering workloads. The 43.3% single-core Cinebench R23 lead over the 5900HX is the largest single-core margin in the entire comparison, and the 31% multicore Cinebench R23 win demonstrates that core count alone does not determine rendering performance.

The average benchmark scores place the 5600X3D slightly ahead overall (25,365 versus 24,822), and both processors occupy the 77th percentile of all CPUs. The 5900HX's wins cluster in arithmetic and data-processing subtests, while the 5600X3D's wins cluster in single-core and cache-sensitive tests. Users who run mixed workloads on a laptop should lean toward the 5900HX. Users building a desktop focused on gaming, physics, and rendering should lean toward the 5600X3D, especially given its 96 MB L3 cache and the fact that it is end-of-life, meaning availability may be limited. The 5900HX remains Active in production, which may matter for ongoing system builds.