AMD Ryzen 7 5800X vs AMD Ryzen 7 7840HS Comparison

Head-to-Head Benchmarks

The recorded data shows a clear split between these two eight-core, sixteen-thread processors. The AMD Ryzen 7 7840HS wins 16 of the 23 head-to-head benchmarks, while the AMD Ryzen 7 5800X takes 7. The overall average benchmark scores reinforce this: the 7840HS posts an average of 29955, compared to 29123 for the 5800X, a difference of roughly 2.9 percent.

The 7840HS dominates in single-thread performance, which is its largest area of advantage. In Cinebench R23 single-core, it scores 1761 against 1574.5 for the 5800X, a 11.8 percent lead. The PassMark single-thread test shows a 8.9 percent edge (3753 vs 3445). The 3DMark single-thread test also favors the mobile chip, with 979 versus 943, a 3.8 percent gain. Even in Cinebench R15 single-core, the 7840HS leads by 3.2 percent (274 vs 265.5). These results indicate the Zen 4 architecture delivers meaningfully higher per-core throughput than Zen 3.

The 7840HS also wins several multi-threaded workloads despite being a 35 W mobile part. In Geekbench multicore, it scores 11846 versus 11036 for the 5800X, a 7.3 percent advantage. PassMark multithread shows 28633 against 27732, a 3.2 percent win. The 3DMark 2-thread test goes to the 7840HS by 3.1 percent (1904 vs 1846), the 4-thread test by 3 percent (3651 vs 3543), and the 8-thread test by 0.9 percent (6092 vs 6035). PassMark floating point math shows a substantial 13.8 percent lead (59921 vs 52639), and PassMark random string sorting is 14 percent faster (40364 vs 35401). Extended instructions also favor the 7840HS by 9.2 percent (25747 vs 23573), and integer math by 3.9 percent (98682 vs 94969).

The 5800X fights back in specific workloads. Its biggest win is in PassMark find prime numbers, where it scores 124 versus 88, a 29 percent advantage. Cinebench R15 multicore heavily favors the desktop chip, with 2608.5 versus 2222.84, a 14.8 percent lead. The 3DMark 16-thread and max-thread tests go to the 5800X by 3.6 percent and 3.5 percent respectively (7586 vs 7314, and 7578 vs 7316). Cinebench R23 multicore shows a narrower 2.4 percent win for the 5800X (15476 vs 15102). PassMark data encryption goes to the 5800X by 2.7 percent (21191 vs 20627). The Geekbench single-core test is effectively a tie, with the 5800X scoring 2032 and the 7840HS scoring 2031, a 0 percent delta. PassMark data compression is also a virtual tie, with the 7840HS leading by only 0 percent (345536 vs 345414). PassMark physics is nearly identical, with the 7840HS winning by 0.9 percent (1376 vs 1364).

Where Each One Wins

The 7840HS is the clear winner for single-threaded responsiveness and lightly threaded workloads. The data shows consistent advantages in Cinebench R23 single-core (11.8 percent), PassMark single-thread (8.9 percent), and 3DMark single-thread (3.8 percent). It also excels in floating-point math, string sorting, and extended instruction workloads, making it a strong choice for scientific computing, data processing, and any application that leverages SIMD or modern instruction sets. The Geekbench multicore win of 7.3 percent further suggests the 7840HS handles mixed general-purpose multi-threaded tasks more efficiently.

The 5800X is the pick for heavily threaded, sustained workloads that push all cores simultaneously. Its 29 percent lead in find prime numbers indicates a raw integer throughput advantage in certain algorithmic patterns. The Cinebench R15 multicore result (14.8 percent ahead) and the 3DMark max-thread result (3.5 percent ahead) suggest that when all sixteen threads are saturated with traditional rendering or simulation tasks, the desktop part's higher power envelope and larger L3 cache matter. Data encryption also leans toward the 5800X by 2.7 percent.

The 7840HS wins PassMark multithread (3.2 percent), which is a broader measure of parallel performance, so the 5800X's wins are workload-specific rather than universal. The 5800X does not win any single-thread test, and its Cinebench R23 multicore margin is only 2.4 percent, indicating that the Zen 4 mobile chip is very competitive even in sustained all-core loads.

The Verdict

The AMD Ryzen 7 7840HS is the better processor for most users based on the benchmark data. It wins 16 of 23 tests, including all single-thread tests and the majority of multi-thread tests. Its 11.8 percent lead in Cinebench R23 single-core and 7.3 percent lead in Geekbench multicore are decisive for everyday responsiveness, application loading, and general productivity. The 13.8 percent advantage in floating-point math and 14 percent in random string sorting make it particularly strong for data analysis and content creation workloads.

The AMD Ryzen 7 5800X is only preferable for specific, heavily threaded workloads where its strengths align. The 29 percent win in find prime numbers and 14.8 percent win in Cinebench R15 multicore point to scenarios with sustained, integer-heavy, all-core processing. For users whose primary tasks are rendering, prime number calculations, or similar workloads that match these patterns, the 5800X offers a measurable advantage. However, its overall average benchmark score is 2.8 percent lower, and it loses the majority of tests.

The 7840HS achieves this performance with a 35 W TDP versus 105 W for the 5800X, making it far more efficient per watt in the recorded data. The 5800X holds a slight edge in Cinebench R23 multicore (2.4 percent), but the 7840HS counters with wins in PassMark multithread (3.2 percent) and Geekbench multicore (7.3 percent). The verdict is clear: the 7840HS is the more versatile performer, while the 5800X is a niche pick for specific heavy-thread workloads.

FAQ

Q: Which processor has a higher single-core score in Cinebench R23?

A: The AMD Ryzen 7 7840HS scores 1761, which is 11.8 percent higher than the AMD Ryzen 7 5800X's 1574.5.

Q: How does the 5800X compare in the Cinebench R15 multicore test?

A: The 5800X scores 2608.5, which is 14.8 percent higher than the 7840HS's 2222.84. This is the largest multicore win for the 5800X in the data.

Q: What is the biggest performance gap in favor of the 7840HS?

A: The 7840HS leads by 14 percent in PassMark random string sorting (40364 vs 35401) and by 13.8 percent in PassMark floating point math (59921 vs 52639).

Q: Is there any benchmark where the two processors are tied?

A: Yes, PassMark data compression is effectively a tie, with the 7840HS scoring 345536 and the 5800X scoring 345414, a 0 percent delta. Geekbench single-core is also a tie, with the 5800X at 2032 and the 7840HS at 2031.

Q: Which processor has better overall average benchmark performance?

A: The 7840HS has an average benchmark score of 29955, compared to 29123 for the 5800X, a difference of approximately 2.9 percent.

Q: How many head-to-head benchmarks does each processor win?

A: The 7840HS wins 16 out of 23 benchmarks, while the 5800X wins 7 out of 23.

Architecture Differences

The two processors come from different generations and process nodes. The 7840HS uses the Zen 4 architecture, codenamed Phoenix, built on a 4 nm process at TSMC. The 5800X uses the Zen 3 architecture, codenamed Vermeer, built on a 7 nm process at TSMC. The 7840HS has a transistor count of 25,000 million, while the 5800X has 4,150 million. The die size also differs significantly: the 7840HS measures 178 mm², while the 5800X measures 74 mm².

Cache configurations vary between the two. The 7840HS has 64 KB of L1 cache per core and 1 MB of L2 cache per core, with 16 MB of shared L3 cache. The 5800X also has 64 KB of L1 cache per core, but only 512 KB of L2 cache per core, with a larger 32 MB of L3 cache. The 5800X's larger L3 cache may contribute to its wins in certain fully-threaded workloads, while the 7840HS benefits from larger per-core L2 and a newer architecture.

The 7840HS is a mobile processor on AMD Socket FP8, while the 5800X is a desktop processor on AMD Socket AM4. The 7840HS has integrated graphics in the form of a Radeon 780M, whereas the 5800X has no integrated graphics. Memory support differs as well: the 7840HS supports DDR5 memory with a bus bandwidth of 89.6 GB/s, while the 5800X supports DDR4 memory with a bandwidth of 51.2 GB/s. Both support dual-channel memory and ECC memory. Both processors use PCIe Gen 4 with 20 lanes (CPU only). The 5800X has an unlocked multiplier, while the 7840HS does not. The production status for both is Active.

Specification Differences

The core and thread counts are identical: both have 8 cores and 16 threads. The base clock is also the same at 3.80 GHz. The boost clock differs, with the 7840HS reaching 5.10 GHz versus 4.70 GHz for the 5800X.

The TDP is a major differentiator: the 7840HS has a 35 W TDP, while the 5800X has a 105 W TDP. The 7840HS uses a 4 nm process, while the 5800X uses a 7 nm process. The 7840HS has a transistor count of 25,000 million, while the 5800X has 4,150 million. The die sizes are 178 mm² for the 7840HS and 74 mm² for the 5800X.

Cache differences are notable: the 7840HS has 1 MB of L2 cache per core, while the 5800X has 512 KB per core. The L3 cache is 16 MB shared for the 7840HS, while the 5800X has 32 MB. Memory support sees the 7840HS on DDR5 with 89.6 GB/s bandwidth, versus the 5800X on DDR4 with 51.2 GB/s bandwidth.

The 7840HS has integrated graphics (Radeon 780M), while the 5800X has none. The 7840HS has a locked multiplier, while the 5800X has an unlocked multiplier. The 7840HS uses AMD Socket FP8, while the 5800X uses AMD Socket AM4. The 7840HS is in the mobile market segment, while the 5800X is in the desktop segment. The 5800X has a launch MSRP of $449, while the 7840HS has no recorded launch MSRP.