AMD Ryzen 5 5500X3D vs AMD Ryzen 7 PRO 5845 Comparison

Where Each One Wins

The benchmark data paints a clear picture of two very different processors sharing the same Zen 3 foundation. The AMD Ryzen 7 PRO 5845 wins 9 of the 11 recorded head-to-head comparisons, while the AMD Ryzen 5 5500X3D takes only 2. That lopsided count, however, obscures the interesting story: each chip dominates a distinct type of workload.

The Ryzen 7 PRO 5845 is the throughput champion. It wins every multi-threaded productivity test in the database, often by wide margins. Data compression, encryption, extended instructions, floating point math, integer math, multithreaded PassMark, and random string sorting all go to the 8-core part. Its two extra cores and higher clock speeds translate directly into commanding leads in these heavily parallel tasks. The largest advantage comes in integer math, where the Ryzen 7 PRO 5845 scores 58.1% higher than its rival.

The Ryzen 5 5500X3D wins the two tests where its unique cache configuration shines: find prime numbers and physics calculations. The prime number test measures raw integer iteration through a constrained dataset, and the physics test simulates rigid body interactions, both workloads that benefit from the 96 MB of shared L3 cache. In the physics benchmark, the 5500X3D leads by 51.4%, a massive reversal of the typical trend. The prime number test shows a 32.4% advantage.

Single-threaded performance also favors the Ryzen 7 PRO 5845, with a 17% lead in the PassMark single-thread test. This matters for everyday responsiveness and lightly threaded applications. The database shows the 5500X3D trails despite its larger cache, likely because its lower 3.00 GHz base and 4.00 GHz boost clocks limit its peak frequency advantage.

For users running heavily threaded workloads, the Ryzen 7 PRO 5845 is the obvious choice. Its multithread score of 26054 versus 20363 represents a 27.9% advantage. For users whose workloads involve physics simulation, prime number finding, or other cache-sensitive iterative tasks, the 5500X3D offers a specialized edge that the 8-core part cannot match.

FAQ

Q: Which processor has more cores and threads?

A: The AMD Ryzen 7 PRO 5845 has 8 cores and 16 threads, while the AMD Ryzen 5 5500X3D has 6 cores and 12 threads.

Q: How does the L3 cache differ between these two CPUs?

A: The Ryzen 5 5500X3D has 96 MB of shared L3 cache, three times the 32 MB shared L3 cache found on the Ryzen 7 PRO 5845. Both chips use 64 KB of L1 cache per core and 512 KB of L2 cache per core.

Q: Which CPU wins in physics-based workloads?

A: The AMD Ryzen 5 5500X3D wins the PassMark physics test with a score of 2282, which is 51.4% higher than the Ryzen 7 PRO 5845's score of 1109.

Q: What are the clock speed differences?

A: The Ryzen 7 PRO 5845 has a base clock of 3.40 GHz and a boost clock of 4.60 GHz. The Ryzen 5 5500X3D has a base clock of 3.00 GHz and a boost clock of 4.00 GHz.

Q: Which processor has a higher TDP?

A: The Ryzen 5 5500X3D has a TDP of 105 watts, while the Ryzen 7 PRO 5845 has a TDP of 65 watts.

Q: Do both processors support ECC memory?

A: Yes, both the AMD Ryzen 7 PRO 5845 and the AMD Ryzen 5 5500X3D support ECC memory, and both use dual-channel DDR4 memory with 51.2 GB/s bandwidth.

Head-to-Head Benchmarks

The database records 11 head-to-head comparisons, and the Ryzen 7 PRO 5845 dominates most of them. The biggest margin comes in integer math, where the 8-core part scores 94884 against 60033, a 58.1% advantage. Floating point math shows a 51% lead, with scores of 52105 versus 34511. These two results establish the Ryzen 7 PRO 5845 as the clear compute leader for general number crunching.

Data encryption delivers a 41.9% win for the Ryzen 7 PRO 5845, scoring 19815 against 13967. Random string sorting follows closely at 42.6%, with scores of 33754 and 23675. Data compression shows a 36.4% advantage, 314363 versus 230392. Extended instructions, which test SIMD and specialized instruction throughput, give the Ryzen 7 PRO 5845 a 32.6% lead, 21117 against 15925.

The multithreaded PassMark score confirms the trend: 26054 for the Ryzen 7 PRO 5845 versus 20363 for the Ryzen 5 5500X3D, a 27.9% difference. Single-thread performance also favors the Ryzen 7 PRO 5845 by 17%, with scores of 3442 and 2941.

The Ryzen 5 5500X3D claims two victories, and they are decisive. The physics test shows a 51.4% advantage, with scores of 2282 versus 1109. The prime number test gives the 5500X3D a 32.4% lead, 170 against 115. These wins demonstrate that the 96 MB L3 cache provides a real benefit in workloads that repeatedly access a small working set, where the larger cache reduces memory latency and improves iteration speed.

The average benchmark scores reflect the overall picture. The Ryzen 7 PRO 5845 has an average score of 35802, while the Ryzen 5 5500X3D sits at 37018. Interestingly, the 5500X3D has a higher average despite losing 9 of 11 tests, because its two wins come in tests where it outperforms by very large margins, and the average includes several tests where the 5500X3D was not recorded with Cinebench scores. The Ryzen 7 PRO 5845 has Cinebench R15, R20, and R23 results in the database, while the 5500X3D does not, which affects the average comparison.

Both processors sit at the 85th percentile among all CPUs in the database, placing them in the same overall performance tier despite their different strengths.

Specification Differences

The two processors share the same AMD Socket AM4 platform, the same 5000 series branding, and the same Zen 3 architecture. Both are built on TSMC's 7 nm process with a 74 mm² die size. The core counts differ significantly: 8 cores and 16 threads on the Ryzen 7 PRO 5845, versus 6 cores and 12 threads on the Ryzen 5 5500X3D.

Clock speeds favor the Ryzen 7 PRO 5845. Its base clock runs at 3.40 GHz and boosts to 4.60 GHz. The Ryzen 5 5500X3D runs at 3.00 GHz base and 4.00 GHz boost. The TDP difference is notable: the Ryzen 7 PRO 5845 draws 65 watts, while the Ryzen 5 5500X3D is rated at 105 watts despite having fewer cores.

Cache configurations could hardly be more different. The Ryzen 7 PRO 5845 has 32 MB of shared L3 cache. The Ryzen 5 5500X3D has 96 MB of shared L3 cache, triple the amount. Both have identical per-core L1 and L2 caches at 64 KB and 512 KB respectively. The transistor count is listed for the Ryzen 7 PRO 5845 at 4,150 million, while the database does not record a transistor count for the 5500X3D.

The Ryzen 7 PRO 5845 lists no integrated graphics, while the Ryzen 5 5500X3D explicitly records integrated graphics as "N/A". Both support DDR4 memory in dual-channel configuration with 51.2 GB/s bandwidth. Both support ECC memory. Both use PCIe Gen 4 with 20 lanes from the CPU. Neither has an unlocked multiplier. The Ryzen 7 PRO 5845 released in April 2022, while the Ryzen 5 5500X3D came later in June 2025. The Ryzen 7 PRO 5845 carries part number 100-000000832, and the Ryzen 5 5500X3D carries 100-000001504.

Architecture Differences

Both processors are built on the Zen 3 architecture with the Vermeer codename, manufactured by TSMC on a 7 nm process. The die size is identical at 74 mm², indicating the same base silicon. The Ryzen 7 PRO 5845 is a full 8-core implementation, while the Ryzen 5 5500X3D uses 6 active cores from the same design.

The defining architectural difference is the L3 cache. The Ryzen 5 5500X3D carries 96 MB of shared L3 cache, a configuration that sets it apart from the standard 32 MB found on the Ryzen 7 PRO 5845. This larger cache is the likely reason for its victories in cache-sensitive workloads like physics simulation and prime number finding. The cache size difference does not change the core architecture, but it changes how effectively the cores can access frequently used data.

The Ryzen 7 PRO 5845 achieves its performance through higher clock speeds and more cores. Its 4.60 GHz boost clock exceeds the 5500X3D's 4.00 GHz boost by a substantial margin. The higher TDP of the 5500X3D, 105 watts versus 65 watts, suggests that maintaining the large cache array and delivering data from it may require additional power, even with fewer active cores.

Both processors support ECC memory, dual-channel DDR4, and PCIe Gen 4 with 20 CPU lanes. Neither has integrated graphics. Both use the AMD Socket AM4 platform, meaning they are drop-in compatible with the same motherboards. The production status for both is listed as active, so both remain available in the market.

The transistor count for the Ryzen 7 PRO 5845 is recorded at 4,150 million, while the 5500X3D does not have a listed transistor count in the database. This reflects the differing documentation available for the two parts rather than an inherent architectural difference. The Ryzen 5 5500X3D's 3D-stacked cache design likely adds transistors to the package, but the database does not provide a figure for confirmation.

The Ryzen 7 PRO 5845's PRO branding indicates additional management and security features typical of professional-grade processors, though the database does not enumerate these features in the benchmark results. The Ryzen 5 5500X3D carries no such branding. Both processors have locked multipliers, preventing manual overclocking through frequency adjustment.

In practical terms, the architecture differences resolve to a trade-off: the Ryzen 7 PRO 5845 offers 8 fast cores with a standard cache pool, while the Ryzen 5 5500X3D offers 6 slightly slower cores with triple the L3 cache. The benchmark results show that the cache advantage matters most in specialized iterative workloads, while the core and clock advantage wins across the broad spectrum of threaded applications.