AMD Ryzen 5 PRO 7645 vs Intel Core i5-14450HX Comparison

The Intel Core i5-14450HX and AMD Ryzen 5 PRO 7645 are two very different processors that land in a similar performance bracket, but the data shows a clear overall winner for most workloads. The AMD Ryzen 5 PRO 7645 wins 15 of the 17 head-to-head benchmark comparisons, including every Cinebench test and most PassMark tests. However, the Intel Core i5-14450HX takes decisive victories in floating-point math and integer math, showing that its hybrid architecture has specific strengths. The Ryzen 5 PRO 7645 is the better choice for general productivity, rendering, and single-threaded tasks, while the i5-14450HX is preferable for mathematical and scientific workloads that rely heavily on floating-point calculations. The data suggests that most users should choose the AMD part, though the Intel chip has a clear niche.

The Verdict

The benchmark results are unambiguous: the AMD Ryzen 5 PRO 7645 is the faster processor in the majority of tests. It wins every Cinebench benchmark, taking the R23 multi-core test with a score of 21710 against the Intel's 20108, a 7.4% advantage. The single-core story is similar, with the AMD part scoring 3065 in Cinebench R23 single-core versus 2838 for the Intel, also a 7.4% lead. The AMD chip is also 7.1% ahead in PassMark's multithread test, scoring 25489 versus 23680. For users who primarily run rendering, video encoding, or any multi-threaded productivity application, the Ryzen 5 PRO 7645 is the stronger pick.

The Intel Core i5-14450HX is not without merit. It wins PassMark's floating-point math test by a substantial 28.4% margin, scoring 58037 versus 45202. It also takes the integer math test with a 4.7% lead, scoring 78330 against 74782. These two wins indicate that the Intel chip excels at raw mathematical computation, making it suitable for specific scientific or engineering workloads. However, these are narrow use cases. The verdict is clear: choose the AMD Ryzen 5 PRO 7645 for general performance and multi-threaded tasks, and choose the Intel Core i5-14450HX only if your workload is dominated by floating-point or integer math.

Architecture Differences

The two chips come from fundamentally different design philosophies. The Intel Core i5-14450HX is built on the Raptor Lake architecture, using a 10 nm process node manufactured by Intel. It features 10 cores and 16 threads, with a base clock of 2.40 GHz and a boost clock of 4.80 GHz. Its cache layout is split: 80 KB of L1 per core, 2 MB of L2 per core, and 20 MB of shared L3 cache. The chip is designed for the mobile market, using the Intel BGA 1964 socket, and it supports both DDR4 and DDR5 memory in a dual-channel configuration. It includes integrated UHD Graphics 710 and is an unlocked multiplier, allowing for overclocking.

The AMD Ryzen 5 PRO 7645 uses the Zen 4 architecture, fabricated on a 5 nm process by TSMC. It has 6 cores and 12 threads, with a base clock of 3.80 GHz and a boost clock of 5.10 GHz. Its cache hierarchy is different: 64 KB of L1 per core, 1 MB of L2 per core, and a larger 32 MB of shared L3 cache. The chip is built for the AMD Socket AM5 and supports only DDR5 memory, with a dual-channel bus and a memory bandwidth of 83.2 GB/s. The AMD part is classified for the server/workstation market segment, has a locked multiplier, and includes Radeon Graphics. It also has more PCIe lanes: Gen 5 with 24 lanes, compared to the Intel's Gen 5 with 16 lanes. The AMD chip uses 6,570 million transistors on a 71 mm² die, while the Intel part has a die size of 257 mm².

Head-to-Head Benchmarks

The biggest win for the AMD Ryzen 5 PRO 7645 is in PassMark's find prime numbers test, where it scores 198 versus the Intel's 98 — a massive 50.5% lead. This indicates a significant advantage in integer-heavy algorithmic workloads. The AMD chip also dominates PassMark's extended instructions test, scoring 21813 against 17207, a 21.1% advantage. In random string sorting, the AMD part leads by 14.4%, scoring 34557 versus 29565. The AMD chip also wins data compression by 2.7%, data encryption by 6.5%, and physics by 7.7%. In the Cinebench suite, the AMD chip is consistently 7.4% to 7.5% ahead in both single-core and multi-core tests across R15, R20, and R23 versions.

The Intel Core i5-14450HX's most significant win is in floating-point math, where it scores 58037 against 45202, a 28.4% lead. This is the largest margin of any test in the comparison. The Intel chip also wins integer math with a 4.7% advantage, scoring 78330 versus 74782. In the PassMark single-thread test, the two chips are nearly identical, with the AMD part scoring 3652 versus 3643 for the Intel — a marginal 0.2% difference. The data shows that the AMD chip is broadly faster across most workloads, while the Intel chip has a specific and pronounced advantage in floating-point-heavy tasks.

Specification Differences

The two processors differ significantly in core count and architecture. The Intel Core i5-14450HX has 10 cores and 16 threads, while the AMD Ryzen 5 PRO 7645 has 6 cores and 12 threads. The Intel chip has a lower base clock of 2.40 GHz versus 3.80 GHz on the AMD, but the AMD chip also has a higher boost clock of 5.10 GHz versus 4.80 GHz. The process node differs: Intel uses 10 nm, while AMD uses 5 nm from TSMC. The L3 cache is larger on the AMD part at 32 MB versus 20 MB on the Intel. The Intel chip supports DDR4 and DDR5 memory, while the AMD chip supports only DDR5, and the AMD part has a specified memory bandwidth of 83.2 GB/s. The Intel chip uses the Intel BGA 1964 socket, while the AMD chip uses AMD Socket AM5. The TDP also differs: 55 W for the Intel, 65 W for the AMD.

Other differences include the integrated graphics: Intel uses UHD Graphics 710, while AMD uses Radeon Graphics. The Intel chip is unlocked, while the AMD chip is locked. The market segments are different: Intel targets mobile, while AMD targets server/workstation. The PCIe configurations differ, with Intel offering Gen 5 with 16 lanes and AMD offering Gen 5 with 24 lanes. The die sizes are notably different: 257 mm² for Intel versus 71 mm² for AMD. The AMD chip has 6,570 million transistors, while the Intel chip's transistor count is not provided in the data. Both chips support ECC memory.

FAQ

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

A: The AMD Ryzen 5 PRO 7645 is faster in all multi-core Cinebench tests. It scores 21710 in Cinebench R23 multi-core versus 20108 for the Intel Core i5-14450HX, a 7.4% lead. It also wins PassMark's multithread test with 25489 versus 23680, a 7.1% advantage.

Q: Does the Intel Core i5-14450HX win any benchmarks?

A: Yes, the Intel chip wins two tests. It scores 58037 in PassMark's floating-point math versus 45202 for the AMD, a 28.4% lead. It also wins integer math with 78330 versus 74782, a 4.7% advantage.

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

A: The AMD Ryzen 5 PRO 7645 is slightly ahead in single-core tests. In Cinebench R23 single-core, it scores 3065 versus 2838 for the Intel, a 7.4% lead. In PassMark's single-thread test, the AMD chip scores 3652 versus 3643, a 0.2% difference.

Q: What are the core and thread counts for each processor?

A: The Intel Core i5-14450HX has 10 cores and 16 threads. The AMD Ryzen 5 PRO 7645 has 6 cores and 12 threads. Despite having fewer cores, the AMD chip is faster in most multi-threaded benchmarks.

Q: Which processor has a larger L3 cache?

A: The AMD Ryzen 5 PRO 7645 has a larger L3 cache at 32 MB shared, compared to 20 MB shared on the Intel Core i5-14450HX. The AMD chip also has a smaller L1 and L2 cache per core: 64 KB and 1 MB, respectively, versus 80 KB and 2 MB on the Intel.

Q: What is the memory support for each processor?

A: The Intel Core i5-14450HX supports both DDR4 and DDR5 memory in a dual-channel configuration. The AMD Ryzen 5 PRO 7645 supports only DDR5 memory, also in dual-channel, with a specified memory bandwidth of 83.2 GB/s.

Where Each One Wins

The AMD Ryzen 5 PRO 7645 is the clear winner for most use cases. Its 7.4% lead in all Cinebench multi-core tests makes it the better choice for video rendering, 3D modeling, and other multi-threaded creative workloads. The 7.1% advantage in PassMark's multithread test reinforces this. The AMD chip's 50.5% lead in find prime numbers and 21.1% lead in extended instructions make it ideal for scientific computing, data analysis, and cryptography. The 14.4% advantage in random string sorting suggests better performance in database and text-processing tasks. The AMD chip's 6.5% lead in data encryption makes it suitable for security-related workloads. Its marginal 0.2% lead in single-thread performance means it is also the better choice for everyday desktop tasks and lightly-threaded applications.

The Intel Core i5-14450HX is the better choice for a narrower set of workloads. Its 28.4% lead in floating-point math makes it superior for scientific simulations, financial modeling, and any application that relies heavily on floating-point calculations. The 4.7% lead in integer math also gives it an edge in certain algorithmic tasks, though the margin is smaller. For users whose primary workload is mathematical computation, the Intel chip is the better pick, despite losing the majority of other benchmarks. However, for general-purpose use, the AMD Ryzen 5 PRO 7645 is the more versatile and faster processor.