AMD Ryzen 5 PRO 7645 vs Intel Core i5-14400 Comparison

The AMD Ryzen 5 PRO 7645 and Intel Core i5-14400 are two 65W processors aimed at different corners of the desktop market, and the benchmark data reveals a genuine split decision. The Ryzen 5 PRO 7645 wins the majority of the head-to-head tests, taking 11 of 17, but the Intel Core i5-14400 counters with decisive wins in several math-heavy workloads. The Ryzen chip edges ahead in overall average benchmark score (32,446 vs. 32,115) and holds a slightly higher percentile rank (83rd vs. 82nd), yet the Intel part is no pushover, posting a higher single-thread Passmark score (3,741 vs. 3,652).

The Verdict

The data suggests a clear choice based on workload priorities. The AMD Ryzen 5 PRO 7645 is the pick for users who need consistent multi-threaded performance across a wide range of tasks. It leads in all three Cinebench tests (R15, R20, R23), each by a narrow 1.9% margin, and it crushes the Intel part in prime number finding by a massive 147.5% (198 vs. 80). Its 14.5% lead in Passmark physics (1,598 vs. 1,396) and 6.8% lead in random string sorting (34,557 vs. 32,346) reinforce its general-purpose strength. The Intel Core i5-14400, conversely, is the better option for specific compute-heavy applications. Its 26.6% lead in floating-point math (61,549 vs. 45,202) and 8.8% lead in integer math (82,017 vs. 74,782) are substantial, and it also wins data compression by 9.1% (314,995 vs. 286,298). For a user whose primary tools are heavily math-oriented, the Intel part delivers more raw throughput where it counts. The Ryzen 5 PRO 7645's 83rd percentile rating versus the i5-14400's 82nd indicates that on average, the AMD chip sits slightly higher in the global performance hierarchy, but the margin is razor-thin.

Architecture Differences

The two processors are built on fundamentally different design philosophies. The AMD Ryzen 5 PRO 7645 uses the Zen 4 architecture on a 5 nm process node from TSMC, while the Intel Core i5-14400 uses the Raptor Lake architecture on a 10 nm process from Intel. The AMD chip features 6 cores and 12 threads, whereas the Intel part offers 10 cores and 16 threads, a difference that explains its higher core count but does not translate into a universal performance advantage. Cache configurations also differ markedly: the Ryzen has 64 KB of L1 cache per core, 1 MB of L2 per core, and 32 MB of shared L3 cache, while the Intel chip has 80 KB of L1 per core, 1.25 MB of L2 per core, and only 20 MB of shared L3. The AMD part's larger L3 cache (32 MB vs. 20 MB) may contribute to its wins in memory-sensitive tests. The Ryzen 5 PRO 7645 supports only DDR5 memory, whereas the Intel part supports both DDR4 and DDR5, offering more flexibility in platform choice. Both chips support ECC memory and have integrated graphics, with the AMD featuring Radeon Graphics and the Intel featuring UHD Graphics 730. Process node differences are stark: the AMD chip uses a smaller 5 nm node with a die size of 71 mm² and 6,570 million transistors, versus the Intel chip's 10 nm node and 215 mm² die size. The AMD part also provides more PCIe lanes (24 vs. 16) at Gen 5 speeds.

FAQ

Q: Which processor has a higher boost clock?

A: The AMD Ryzen 5 PRO 7645 boosts up to 5.10 GHz, which is higher than the Intel Core i5-14400's maximum boost of 4.70 GHz.

Q: How do the two compare in single-core performance?

A: The Intel Core i5-14400 wins the Passmark single-thread test with a score of 3,741 versus the AMD's 3,652, a 2.4% lead. However, the AMD Ryzen 5 PRO 7645 wins all three Cinebench single-core tests (R15, R20, R23) by 1.7% to 1.9%.

Q: Do both processors support ECC memory?

A: Yes, the data shows that both the AMD Ryzen 5 PRO 7645 and the Intel Core i5-14400 support ECC memory.

Q: Which processor has a larger L3 cache?

A: The AMD Ryzen 5 PRO 7645 has 32 MB of shared L3 cache, which is larger than the Intel Core i5-14400's 20 MB of shared L3 cache.

Q: What is the market segment for each processor?

A: The AMD Ryzen 5 PRO 7645 is listed as a Server/Workstation segment part, while the Intel Core i5-14400 is listed as a Desktop segment part.

Q: Which chip wins more head-to-head benchmark tests?

A: The AMD Ryzen 5 PRO 7645 wins 11 of the 17 head-to-head benchmark tests, while the Intel Core i5-14400 wins 6.

Specification Differences

The two processors differ in several key specifications. The AMD Ryzen 5 PRO 7645 has 6 cores and 12 threads, while the Intel Core i5-14400 has 10 cores and 16 threads. Base clocks differ significantly: the AMD chip runs at 3.80 GHz, while the Intel chip runs at a lower 2.50 GHz base. Boost clocks also differ, with the AMD hitting 5.10 GHz and the Intel reaching 4.70 GHz. The AMD part is built on a 5 nm process from TSMC, while the Intel part uses a 10 nm process from Intel. Cache sizes vary per core: the AMD has 64 KB L1 and 1 MB L2, while the Intel has 80 KB L1 and 1.25 MB L2. Shared L3 cache is 32 MB on the AMD and 20 MB on the Intel. Memory support shows the AMD only supports DDR5, while the Intel supports both DDR4 and DDR5. Memory bandwidth is listed at 83.2 GB/s for the AMD, with no figure given for the Intel. PCIe lanes also differ, with the AMD offering 24 Gen 5 lanes and the Intel offering 16 Gen 5 lanes. The integrated graphics differ as well: AMD's Radeon Graphics versus Intel's UHD Graphics 730. Socket types are incompatible: the AMD uses AMD Socket AM5, while the Intel uses Intel Socket 1700. The Intel part has a launch MSRP of $221. Release dates also differ, with the AMD launching on 2023-06-12 and the Intel launching later on 2024-01-07.

Head-to-Head Benchmarks

The benchmark data shows a fascinating split, with each processor dominating distinct workload types. The AMD Ryzen 5 PRO 7645 sweeps all six Cinebench tests, winning R15 multicore (2,188 vs. 2,148), R15 single-core (308 vs. 303), R20 multicore (9,118 vs. 8,952), R20 single-core (1,287 vs. 1,263), R23 multicore (21,710 vs. 21,315), and R23 single-core (3,065 vs. 3,009), each by a consistent 1.9% margin. This uniformity suggests a well-rounded architectural advantage in rendering workloads. The AMD chip also posts a commanding 147.5% victory in Passmark find prime numbers (198 vs. 80), a test that often rewards efficient integer processing and cache design. Its 10.1% win in Passmark extended instructions (21,813 vs. 19,816) and 14.5% win in physics (1,598 vs. 1,396) further demonstrate its strength in specialized compute tasks. The Intel Core i5-14400, however, fights back hard in raw math throughput. Its 26.6% lead in floating-point math (61,549 vs. 45,202) is the largest margin for either side in this category, and its 8.8% win in integer math (82,017 vs. 74,782) shows brute-force capability. The Intel part also wins data compression by 9.1% (314,995 vs. 286,298) and data encryption by a slim 0.4% (16,731 vs. 16,657). In single-threaded Passmark, the Intel chip takes a 2.4% lead (3,741 vs. 3,652), and it also wins the overall Passmark multithread test by 1.6% (25,489 vs. 25,080), despite losing the Cinebench multicore tests. The AMD chip counters with a 6.8% win in random string sorting (34,557 vs. 32,346). Overall, the data indicates the AMD Ryzen 5 PRO 7645 is the more consistent performer across diverse workloads, while the Intel Core i5-14400 is a specialized tool that excels in floating-point and integer math tasks.