AMD Ryzen 5 7400F vs AMD Ryzen 5 PRO 7645 Comparison

The AMD Ryzen 5 7400F and the AMD Ryzen 5 PRO 7645 are near-identical twins on paper, but the data reveals a clear split in purpose. The 7400F is the faster part in the vast majority of benchmark scenarios, winning 14 of 17 head-to-head tests, while the PRO 7645 counters with a few specific wins and a feature the 7400F lacks entirely. The benchmark results indicate that the 7400F edges ahead in both multi-core and single-core workloads, but the PRO 7645 is not without its own merits, particularly for users who need integrated graphics or a locked, stable platform.

The Verdict

The data points to the AMD Ryzen 5 7400F as the performance pick. It wins 14 of 17 head-to-head comparisons, including every Cinebench test. In multi-core workloads, the 7400F posts a 0.3% lead in both Cinebench R20 and R23, and a 0.6% advantage in PassMark’s multithread test. Single-core results follow the same pattern, with the 7400F ahead by 1% in PassMark single-thread and 0.2% in Cinebench R23 single-core. The largest delta in its favor is a 3.9% win in PassMark physics, followed by 1.6% in random string sorting.

The AMD Ryzen 5 PRO 7645 is the choice for systems that require integrated graphics. The 7400F has no integrated graphics (N/A), while the PRO 7645 includes Radeon Graphics. This is the defining differentiator for a workstation or server environment where a discrete GPU is not always necessary. The PRO 7645 also wins three benchmark tests: PassMark extended instructions (0.3% ahead), find prime numbers (3.5% ahead), and integer math (a tie, effectively 0% delta). Its market segment is listed as Server/Workstation, and it has a locked multiplier, whereas the 7400F is unlocked and targeted at Desktop.

For a pure performance buyer with a discrete GPU, the 7400F is the obvious choice. For a system builder who values a self-contained processor with graphics output and a more conservative, locked configuration, the PRO 7645 is the safer bet. The 7400F carries a launch MSRP of $229, while the PRO 7645 has no listed launch MSRP. The percentile rankings are identical at 83, placing both in the same tier of all CPUs.

FAQ

Q: Which processor is faster in multi-core benchmarks?

A: The AMD Ryzen 5 7400F. It leads in Cinebench R23 multi-core with a score of 21765 versus 21710, a 0.3% advantage. It also wins PassMark multithread with 25645 versus 25489, a 0.6% delta.

Q: Does the AMD Ryzen 5 PRO 7645 have integrated graphics?

A: Yes. The PRO 7645 includes Radeon Graphics. The AMD Ryzen 5 7400F lists its integrated graphics as N/A, meaning it has none.

Q: Are these two CPUs identical in core count and architecture?

A: Both have 6 cores and 12 threads, use the Zen 4 architecture with the Raphael codename, and are built on a 5 nm process at TSMC. Both have the same cache layout: 64 KB L1 per core, 1 MB L2 per core, and 32 MB shared L3.

Q: What is the biggest single benchmark win for either processor?

A: The largest delta is the 7400F’s 3.9% win in PassMark physics (1660 versus 1598). The PRO 7645’s biggest win is a 3.5% lead in PassMark find prime numbers (198 versus 191).

Q: Are both processors compatible with the same memory and socket?

A: Yes. Both use AMD Socket AM5, support DDR5 memory with dual-channel bus, and have 83.2 GB/s memory bandwidth. Both also support ECC memory and have PCIe Gen 5 with 24 lanes (CPU only).

Q: Is the AMD Ryzen 5 7400F overclockable?

A: The data shows the 7400F has an unlocked multiplier, indicating overclocking support. The PRO 7645 has a locked multiplier, indicating no such support.

Architecture Differences

Despite sharing the same Zen 4 architecture and Raphael codename, the two processors diverge in their intended roles. Both are built on TSMC’s 5 nm process with 6,570 million transistors and a 71 mm² die size, but this is where the silicon similarities end in terms of market positioning. The 7400F is classified as a Desktop part, while the PRO 7645 is marked for Server/Workstation. This distinction is reflected in their integrated graphics: the 7400F has N/A, while the PRO 7645 includes Radeon Graphics. The presence of an iGPU on the PRO chip suggests a design philosophy aimed at reliability and self-containment in professional environments, whereas the 7400F assumes a discrete GPU will be present. The PRO 7645 also has a locked multiplier, which is typical for workstation parts that prioritize stability over enthusiast overclocking. The 7400F, with its unlocked multiplier, is clearly aimed at desktop users who may want to extract additional performance. Both processors share the same cache hierarchy, with 64 KB L1 per core, 1 MB L2 per core, and 32 MB shared L3, and both support ECC memory, a nod to the PRO part’s professional ambitions.

Specification Differences

The specification sheets are nearly identical, but a few fields separate the two. The base clock differs: the 7400F runs at 3.70 GHz, while the PRO 7645 runs at 3.80 GHz. The boost clock also differs, with the 7400F reaching 4.70 GHz and the PRO 7645 reaching 5.10 GHz. This is a notable reversal: the PRO 7645 has higher clocks on paper, yet it loses in most benchmarks. The integrated graphics field is the most significant differentiator, with the 7400F listing N/A and the PRO 7645 listing Radeon Graphics. The market segment also differs, with the 7400F as Desktop and the PRO 7645 as Server/Workstation. The multiplier status is another divergence: the 7400F is unlocked, while the PRO 7645 is locked. The release dates are far apart, with the PRO 7645 launching on 2023-06-12 and the 7400F launching on 2025-01-08. The 7400F has a launch MSRP of $229, while the PRO 7645 has no listed launch MSRP. Finally, the part numbers are distinct: 100-000001845 for the 7400F and 100-000000600 for the PRO 7645. All other fields—cores, threads, TDP, socket, process node, cache, memory support, PCIe lanes, and ECC support—are identical.

Head-to-Head Benchmarks

The benchmark data shows a consistent, if narrow, victory for the 7400F across most tests. In Cinebench R15 multi-core, the 7400F scores 2193 against 2188, a 0.2% win. The single-core R15 test sees a similar 0.3% edge (309 versus 308). Moving to Cinebench R20, the 7400F leads multi-core by 0.3% (9141 versus 9118) and single-core by 0.2% (1290 versus 1287). The pattern holds in Cinebench R23, where the 7400F wins multi-core with 21765 versus 21710 (0.3%) and single-core with 3072 versus 3065 (0.2%). These are sub-1% margins, but they are consistent across all six Cinebench variants.

The PassMark suite paints a more varied picture. The 7400F’s largest victory comes in physics, where it scores 1660 against 1598, a 3.9% delta. It also wins floating point math by 1.3% (45799 versus 45202) and random string sorting by 1.6% (35096 versus 34557). Data compression goes to the 7400F with a 1.3% lead (289999 versus 286298). Data encryption shows a 0.3% edge (16712 versus 16657), and the multithread test goes to the 7400F with 25645 versus 25489, a 0.6% delta. Single-thread performance favors the 7400F by 1% (3689 versus 3652).

The PRO 7645 does manage to take three tests. Its best showing is in PassMark find prime numbers, where it scores 198 against 191, a 3.5% margin. It also wins extended instructions with 21813 versus 21747, a 0.3% delta. The third win is integer math, where it scores 74782 against 74745, but the delta is effectively 0%. These wins suggest that in specialized integer-heavy or instruction-heavy workloads, the PRO 7645 can pull ahead, but the overall average benchmark score tells the story: the 7400F averages 32750, while the PRO 7645 averages 32446. The nearest rival data places the 7400F just 0.1% ahead of the Intel Core i5-14600T and 0.2% ahead of the Intel Core Ultra 7 155H, while the PRO 7645 sits 0.3% behind the AMD Ryzen AI 7 PRO 360. Both CPUs occupy the same 83rd percentile of all CPUs, but the 7400F’s higher average score and 14 wins out of 17 tests make it the clear benchmark champion.