AMD Ryzen 7 8840HX vs AMD Ryzen Threadripper PRO 5955WX Comparison

# AMD Ryzen 7 8840HX vs AMD Ryzen Threadripper PRO 5955WX

The benchmark database places these two AMD processors in the same 94th percentile among all CPUs, yet their performance profiles diverge sharply. The Ryzen 7 8840HX is a 12-core mobile part with Zen 4 architecture, while the Threadripper PRO 5955WX is a 16-core workstation processor built on Zen 3. Head-to-head results show the Threadripper winning 10 of 13 tests, but the Ryzen 7 takes two significant single-thread victories and one prime-number test. This analysis breaks down the recorded data to show where each processor dominates and which workloads favor which chip.

Head-to-Head Benchmarks

The most decisive gap appears in Cinebench R23 multicore, where the Threadripper PRO 5955WX scores 41837 against the Ryzen 7 8840HX's 25265. That is a 39.6% deficit for the mobile chip, reflecting the workstation part's 16 cores versus 12 and its 280W TDP allowance. The single-core Cinebench R23 result is even more lopsided in the opposite direction of what the core counts suggest: the Threadripper scores 5906, while the Ryzen 7 manages only 1857, a 68.6% gap. This result is striking because the Ryzen 7 has a higher boost clock at 5.10 GHz versus 4.50 GHz, yet the Threadripper's older Zen 3 architecture still delivers far higher single-core Cinebench performance in this database.

In PassMark tests, the Threadripper leads across most multi-threaded workloads. Data compression shows 690994 for the Threadripper versus 496427 for the Ryzen 7, a 28.2% advantage. Data encryption follows a similar pattern: 42524 versus 29919, a 29.6% gap. Extended instructions see the Threadripper at 46952 against 36527, a 22.2% lead. Floating point math favors the Threadripper at 104377 versus 86747, a 16.9% margin. Integer math shows 185168 versus 146506, a 20.9% advantage for the workstation chip. The multithread PassMark score lands at 49220 for the Threadripper versus 41732 for the Ryzen 7, a 15.2% difference. Physics tests show 2913 versus 2185, a 25% gap. Random string sorting completes the Threadripper sweep with 69879 against 57971, a 17% lead.

The Ryzen 7 8840HX wins three head-to-head tests. PassMark single-thread performance is 3958 versus 3324, a 19.1% advantage for the mobile chip. The duplicate PassMark singlethread result confirms the same 19.1% margin. The find prime numbers test goes to the Ryzen 7 at 304 versus 248, a 22.6% improvement. These wins highlight the Zen 4 architecture's efficiency at lower core counts and higher clocks, particularly in workloads that do not scale with additional cores.

Where Each One Wins

The Threadripper PRO 5955WX is the clear choice for multi-threaded, throughput-oriented workloads. Its wins span data compression, encryption, extended instruction sets, floating point math, integer math, physics simulation, random string sorting, and the Cinebench R23 multicore test. The consistent 15% to 30% margins across these PassMark categories indicate that the 16-core, 32-thread configuration with 64 MB of L3 cache and eight-channel DDR4 memory provides substantial bandwidth and parallelism advantages. The Threadripper's 204.8 GB/s memory bandwidth versus 83.2 GB/s for the Ryzen 7 directly supports workloads that stream large datasets, such as compression and encryption.

The Ryzen 7 8840HX wins in single-thread PassMark tests and the prime number calculation. The 19.1% single-thread advantage likely stems from its higher boost clock of 5.10 GHz and newer Zen 4 architecture, which improves instruction-level parallelism. The find prime numbers result, where the Ryzen 7 scores 304 versus 248, suggests that this workload benefits from the mobile chip's higher clock speed and possibly its larger 1 MB per-core L2 cache, compared to 512 KB per core on the Threadripper. For applications that are latency-bound or rely on a single fast core, the Ryzen 7 is the better performer.

The Threadripper's Cinebench R23 single-core score of 5906 versus 1857 is an outlier that deserves attention. This 68.6% margin cannot be explained by core count or memory bandwidth alone. It suggests that the database's recorded Cinebench R23 single-core test may have run under different conditions for the two chips, or that the Threadripper's boost behavior on this specific test differs substantially from the PassMark single-thread results. The PassMark single-thread data, which shows the Ryzen 7 ahead by 19.1%, is more consistent with the clock speed and architecture differences.

The Verdict

For users prioritizing multi-threaded performance, the AMD Ryzen Threadripper PRO 5955WX is the stronger processor. It wins 10 of 13 head-to-head benchmarks, with the largest margins in Cinebench R23 multicore (39.6% ahead) and data encryption (29.6% ahead). The 16-core, 32-thread design, combined with 280W TDP and eight-channel memory, makes it suitable for rendering, scientific computing, and heavy data processing. Its 94th percentile ranking matches the Ryzen 7, but the average benchmark score of 67868 sits slightly below the Ryzen 7's 71797, meaning the mobile chip has higher overall consistency across the full PassMark suite.

For users who need fast single-thread response, the AMD Ryzen 7 8840HX delivers a 19.1% advantage in PassMark single-thread tests and a 22.6% lead in prime number calculations. Its 12 cores and 24 threads still provide respectable multi-thread performance, though 15% to 40% behind the Threadripper in most multi-core tests. The Ryzen 7's lower TDP of 55W and mobile form factor make it appropriate for laptops and compact systems, while the Threadripper requires a workstation motherboard with Socket WRX8.

The database indicates that the Ryzen 7 has a higher average benchmark score at 71797 versus 67868, despite losing most head-to-head tests. This discrepancy arises because the Ryzen 7's nearest rivals include Intel Core Ultra 7 265KF (71910, 0.2% higher) and Intel Xeon 6517P (72350, 0.8% higher), while the Threadripper's nearest rivals include AMD EPYC 4484PX (67822, 0.1% lower) and Intel Xeon w5-3525 (67673, 0.3% lower). The Ryzen 7 sits in a more competitive performance band, which raises its average score relative to the field.

FAQ

Q: Which processor has better single-core performance?

The Ryzen 7 8840HX wins PassMark single-thread tests with a score of 3958 versus 3324 for the Threadripper PRO 5955WX, a 19.1% margin. However, Cinebench R23 single-core shows the Threadripper ahead at 5906 versus 1857, a 68.6% gap, so results vary by benchmark.

Q: How do the core counts differ?

The Ryzen 7 8840HX has 12 cores and 24 threads, while the Threadripper PRO 5955WX has 16 cores and 32 threads. The Threadripper's additional cores contribute to its multi-threaded wins.

Q: What is the memory bandwidth difference?

The Threadripper PRO 5955WX supports eight-channel DDR4 memory with 204.8 GB/s bandwidth. The Ryzen 7 8840HX uses dual-channel DDR5 with 83.2 GB/s. The Threadripper's bandwidth is 2.5 times higher.

Q: Which processor supports ECC memory?

Only the Threadripper PRO 5955WX supports ECC memory. The Ryzen 7 8840HX does not list ECC support in the database.

Q: How many PCIe lanes does each processor provide?

The Threadripper PRO 5955WX provides 128 PCIe Gen 4 lanes (CPU only). The Ryzen 7 8840HX provides 28 PCIe Gen 5 lanes (CPU only). The Threadripper offers significantly more expansion capacity.

Q: Which processor has a higher boost clock?

The Ryzen 7 8840HX boosts to 5.10 GHz, while the Threadripper PRO 5955WX boosts to 4.50 GHz. This 0.60 GHz advantage helps the Ryzen 7 in single-thread PassMark tests.

Architecture Differences

The two processors represent different design generations and market segments. The Ryzen 7 8840HX uses the Zen 4 architecture on a 5 nm TSMC process, with a Dragon Range codename and 8000 series branding. It contains 13,140 million transistors across a dual-die design measuring 2x 71 mm². The Threadripper PRO 5955WX uses Zen 3 on a 7 nm TSMC process, with Chagall PRO codename and 5000 series branding. It holds 16,600 million transistors across four dies measuring 4x 81 mm².

Cache configurations diverge in L2 capacity. The Ryzen 7 provides 1 MB of L2 cache per core, while the Threadripper offers 512 KB per core. Both share 64 MB of L3 cache, though the Ryzen 7's is labeled as shared while the Threadripper's is a single 64 MB pool. L1 cache is identical at 64 KB per core.

Memory support differs by generation. The Ryzen 7 uses DDR5 in a dual-channel configuration, while the Threadripper uses DDR4 in an eight-channel configuration. The Threadripper's ECC support and 128 PCIe Gen 4 lanes target workstation reliability and expandability. The Ryzen 7's 28 PCIe Gen 5 lanes prioritize bandwidth for a mobile platform.

The Ryzen 7 includes integrated Radeon 610M graphics, while the Threadripper has no integrated graphics. The Ryzen 7 also has an unlocked multiplier, allowing overclocking, whereas the Threadripper's multiplier is locked. Power envelopes differ substantially: 55W for the mobile chip versus 280W for the workstation chip.

Release dates place the Threadripper PRO 5955WX in March 2022, while the Ryzen 7 8840HX launched in April 2025. Both processors remain active in production. The Ryzen 7 targets the mobile market segment with Socket FL1, while the Threadripper uses Socket WRX8 for server and workstation applications. These architectural choices explain the benchmark patterns: the Ryzen 7 excels at single-thread speed and efficiency, while the Threadripper dominates multi-threaded throughput.