AMD Ryzen 5 PRO 8645HS vs Intel Core 5 315 Comparison

The AMD Ryzen 5 PRO 8645HS and Intel Core 5 315 are both six-core mobile processors, but the recorded benchmark data reveals a decisive performance gap. The AMD part wins 14 of the 17 head-to-head tests, while the Intel chip claims only 3 victories. The average benchmark score for the AMD processor is 30879, placing it in the 82nd percentile of all CPUs, whereas the Intel processor averages 18188, landing in the 72nd percentile. This difference in overall standing sets the stage for a detailed examination of where each chip excels.

Head-to-Head Benchmarks

The most striking pattern in the data is the AMD processor’s dominance in multi-threaded workloads. In Cinebench R23 multicore, the Ryzen 5 PRO 8645HS scores 19742 against the Intel Core 5 315’s 12981, a delta of 52.1%. This advantage is consistent across all Cinebench versions. In Cinebench R20 multicore, the scores are 8291 versus 5452, and in Cinebench R15 multicore, they are 1989 versus 1308, both showing the same 52.1% gap. The AMD chip’s 12 threads, enabled by simultaneous multithreading, provide a clear edge over the Intel chip’s 6 threads in rendering workloads.

The single-core Cinebench results follow a similar trajectory. The Ryzen 5 PRO 8645HS scores 2787 in Cinebench R23 single-core, compared to 1832 for the Intel Core 5 315, a 52.1% lead. In Cinebench R20 single-core, the margin is 1170 versus 769, and in Cinebench R15 single-core, it is 280 versus 184. These results indicate that the AMD architecture, with a boost clock of 5.00 GHz, delivers higher per-thread performance in these specific tests.

PassMark integer math is the largest single victory for the AMD processor. The Ryzen 5 PRO 8645HS scores 72740, while the Intel Core 5 315 scores 31690, a delta of 129.5%. This is a massive advantage for the AMD chip in workloads that rely heavily on integer arithmetic. Similarly, random string sorting shows a 102.1% lead for AMD, with scores of 35472 versus 17551. Data compression also favors AMD heavily, with a score of 265826 versus 146143, an 81.9% difference.

The Intel Core 5 315 does secure wins in three specific tests. The most notable is PassMark find prime numbers, where it scores 112 against AMD’s 73, a 34.8% advantage for Intel. This test appears to favor the Intel microarchitecture’s handling of that specific algorithm. Additionally, the Intel chip wins both PassMark single-thread tests, scoring 4021 against AMD’s 3858, a 4.1% margin. This suggests the Intel chip has a slight edge in purely single-threaded, non-Cinebench workloads, despite its lower boost clock of 4.40 GHz.

Other PassMark tests show narrower margins. Floating point math sees AMD ahead with 45481 versus 42441, a 7.2% difference. Physics scores are close, with AMD at 1208 and Intel at 1163, a 3.9% lead. Data encryption shows AMD ahead by 56.4%, with scores of 17387 versus 11119. Extended instructions also favor AMD, with 21212 versus 13143, a 61.4% gap.

Where Each One Wins

The AMD Ryzen 5 PRO 8645HS is the clear winner in multi-threaded and heavily parallel workloads. Its 52.1% lead across all Cinebench multicore tests indicates strong performance in 3D rendering, video encoding, and other tasks that scale with thread count. The 129.5% lead in integer math points to advantages in compilation, scientific computing, and financial modeling. Data compression and encryption workloads also belong to AMD, making it the better choice for database operations and file archiving.

The Intel Core 5 315 wins in the specific niche of prime number finding, where its 112 score versus AMD’s 73 shows a unique strength. This could translate to advantages in certain cryptographic or mathematical applications that rely on that specific algorithm. The Intel chip also holds a 4.1% lead in PassMark single-thread tests, indicating a small edge in older or lightly threaded applications that do not use Cinebench’s execution paths. Its lower 15 W TDP also suggests it may be suited for fanless or ultra-portable designs, though the data does not directly measure power consumption.

The AMD chip’s overall benchmark profile is more balanced. It wins 14 tests, including all Cinebench variants, and its losses are limited to two single-thread tests and one specific math test. The Intel chip’s wins are narrow in the single-thread tests but substantial in the prime number test. The data indicates that for general productivity, the AMD processor is overwhelmingly faster, while the Intel processor has a few specific strengths that do not compensate for its overall lower average score.

The Verdict

Based strictly on the recorded data, the AMD Ryzen 5 PRO 8645HS is the superior processor for almost all workloads. Its average benchmark score of 30879 is 69.8% higher than the Intel Core 5 315’s 18188. The AMD chip’s 82nd percentile ranking versus Intel’s 72nd percentile further confirms its higher standing among all CPUs. For users running Cinebench, PassMark multithread, integer math, or data compression, the AMD processor delivers between 52.1% and 129.5% more performance.

The Intel Core 5 315 is the choice only for specific scenarios. If the workload is dominated by the prime number finding algorithm, the Intel chip’s 34.8% advantage is decisive. For applications that rely on the exact execution path measured by PassMark single-thread, the Intel chip’s 4.1% lead could be relevant, though this is a small margin. The Intel chip’s lower 15 W TDP compared to AMD’s 45 W TDP suggests it may fit into more power-constrained designs, but the data does not include thermal or battery life measurements.

For a user prioritizing raw compute performance, the database clearly points to the AMD Ryzen 5 PRO 8645HS. For a user with a very specific workload that matches Intel’s niche strengths, the Core 5 315 has a place. The 14 to 3 win count is not close, and the average scores reinforce that AMD is the more capable part.

FAQ

Q: Which processor has a higher average benchmark score?

A: The AMD Ryzen 5 PRO 8645HS has an average benchmark score of 30879, while the Intel Core 5 315 has an average score of 18188.

Q: How large is the AMD processor’s lead in Cinebench R23 multicore?

A: The AMD Ryzen 5 PRO 8645HS scores 19742, compared to 12981 for the Intel Core 5 315, a delta of 52.1%.

Q: Is there any test where the Intel Core 5 315 wins by a large margin?

A: Yes, in PassMark find prime numbers, the Intel Core 5 315 scores 112 against AMD’s 73, a 34.8% advantage.

Q: What is the difference in single-thread performance?

A: The Intel Core 5 315 wins both PassMark single-thread tests with a score of 4021 versus 3858 for AMD, a 4.1% lead. However, AMD wins all Cinebench single-core tests by 52.1%.

Q: How do the two processors compare in integer math?

A: The AMD Ryzen 5 PRO 8645HS scores 72740 in PassMark integer math, while the Intel Core 5 315 scores 31690, giving AMD a 129.5% lead.

Q: Which processor has more threads?

A: The AMD Ryzen 5 PRO 8645HS has 12 threads, while the Intel Core 5 315 has 6 threads.

Architecture Differences

The AMD Ryzen 5 PRO 8645HS uses the Zen 4 architecture, codenamed Hawk Point, built on a 4 nm process by TSMC. It has 6 cores and 12 threads, with a base clock of 4.30 GHz and a boost clock of 5.00 GHz. The cache layout includes 64 KB of L1 per core, 1 MB of L2 per core, and 16 MB of shared L3 cache. The die size is 178 mm² with 25,000 million transistors. It supports DDR5 memory through a dual-channel bus with a bandwidth of 89.6 GB/s, and it includes ECC memory support. The integrated graphics are Radeon 760M, and the PCIe interface is Gen 4 with 20 CPU lanes.

The Intel Core 5 315 uses the Wildcat Lake codename, built on a 3 nm process by Intel. It has 6 cores and 6 threads, with a base clock of 1.50 GHz and a boost clock of 4.40 GHz. The cache layout includes 192 KB of L1, 2.5 MB of L2, and 6 MB of shared L3 cache. It supports DDR5 and LPDDR5X memory through a single-channel bus with a bandwidth of 59.7 GB/s. It does not support ECC memory. The integrated graphics are Intel Xe3 Graphics with 2 Xe cores, and the PCIe interface is Gen 4 with 6 CPU lanes.

The process node difference is notable: Intel’s 3 nm versus AMD’s 4 nm. The AMD chip’s larger L3 cache (16 MB versus 6 MB) and dual-channel memory bus contribute to its higher memory bandwidth. The Intel chip’s lower base clock (1.50 GHz versus 4.30 GHz) is a major factor in its lower multi-thread scores, despite having the same core count.

Specification Differences

The two processors differ in several key specification fields. The AMD Ryzen 5 PRO 8645HS has a TDP of 45 W, while the Intel Core 5 315 has a TDP of 15 W. The AMD chip uses the AMD Socket FP7, while the Intel chip uses Intel BGA 1516. The AMD chip’s base clock is 4.30 GHz versus Intel’s 1.50 GHz, and its boost clock is 5.00 GHz versus 4.40 GHz. The AMD chip has 12 threads versus Intel’s 6 threads.

Memory support differs: AMD supports DDR5 with a dual-channel bus and 89.6 GB/s bandwidth, while Intel supports DDR5 and LPDDR5X with a single-channel bus and 59.7 GB/s bandwidth. AMD enables ECC memory, while Intel does not. The PCIe configuration differs, with AMD offering 20 CPU lanes versus Intel’s 6 CPU lanes. The integrated graphics are different, with AMD’s Radeon 760M versus Intel’s Xe3 Graphics with 2 Xe cores. The release dates also differ, with AMD launching on 2024-04-15 and Intel on 2026-04-15. The Intel processor has a launch MSRP of $340, while the AMD processor has no recorded launch MSRP.