AMD Ryzen 5 PRO 8540U vs Intel Core 7 251E Comparison

AMD Ryzen 5 PRO 8540U is a 6-core, 12-thread mobile processor built on Zen 4 architecture, while Intel Core 7 251E is a 24-core, 32-thread desktop processor based on Bartlett Lake. The database currently holds benchmark results for the AMD part only, so the following analysis relies on recorded measurements for the Ryzen and architectural specifications for both chips.

FAQ

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

A: The AMD Ryzen 5 PRO 8540U has 6 cores and 12 threads. The Intel Core 7 251E has 24 cores and 32 threads.

Q: Which processor has a higher boost clock?

A: The Intel Core 7 251E reaches a boost clock of 5.60 GHz. The AMD Ryzen 5 PRO 8540U boosts to 4.90 GHz.

Q: Do both processors support ECC memory?

A: Yes, both the AMD Ryzen 5 PRO 8540U and the Intel Core 7 251E support ECC memory.

Q: What is the process node for each chip?

A: The AMD Ryzen 5 PRO 8540U is fabricated on a 4 nm process at TSMC. The Intel Core 7 251E uses a 10 nm process at Intel.

Q: What is the thermal design power (TDP) difference?

A: The AMD Ryzen 5 PRO 8540U has a TDP of 28 watts. The Intel Core 7 251E has a TDP of 65 watts.

Q: Which processor has a larger L3 cache?

A: The Intel Core 7 251E has 36 MB of shared L3 cache. The AMD Ryzen 5 PRO 8540U has 16 MB of shared L3 cache.

Architecture Differences

The architectural gap between these two processors is substantial. The AMD Ryzen 5 PRO 8540U uses the Zen 4 architecture under the Hawk Point codename, part of the 8000 series. It is built on a 4 nm process at TSMC with 20,900 million transistors on a 137 mm² die. The Intel Core 7 251E uses the Bartlett Lake codename within the Core 7 generation, fabricated on Intel's 10 nm process with a die size of 257 mm². The Intel chip has no listed transistor count in the database.

Core configuration differences are significant. The AMD part uses 6 cores and 12 threads, while the Intel part uses 24 cores and 32 threads. This core advantage gives the Intel processor a much higher theoretical thread capacity. The Intel Core 7 251E has a base clock of 2.10 GHz and a boost clock of 5.60 GHz. The AMD Ryzen 5 PRO 8540U runs at a base clock of 3.20 GHz and boosts to 4.90 GHz. The AMD chip starts from a higher base frequency, but the Intel chip has a higher maximum boost.

Cache layouts differ in both size and structure. The AMD Ryzen 5 PRO 8540U uses 64 KB of L1 cache per core, 1 MB of L2 cache per core, and 16 MB of shared L3 cache. The Intel Core 7 251E uses 80 KB of L1 cache per core, 2 MB of L2 cache per core, and 36 MB of shared L3 cache. The Intel processor has more cache at every level, with more than double the L3 capacity.

Memory support also differs. The AMD processor supports DDR5 memory only, while the Intel processor supports both DDR4 and DDR5. Both use a dual-channel memory bus and achieve a maximum memory bandwidth of 89.6 GB/s. Both processors support ECC memory. The PCIe interface differs: the AMD Ryzen 5 PRO 8540U provides Gen 4 with 14 lanes from the CPU, while the Intel Core 7 251E provides Gen 5 with 16 lanes.

The integrated graphics differ as well. The AMD chip uses Radeon 740M graphics, while the Intel chip uses UHD Graphics 770. The AMD processor targets the mobile segment and uses AMD Socket FP7. The Intel processor targets the desktop segment and uses Intel Socket 1700. The Intel Core 7 251E has a listed launch MSRP of $384. The AMD Ryzen 5 PRO 8540U has no launch MSRP recorded.

The Verdict

The data indicates two processors aimed at entirely different use cases. The AMD Ryzen 5 PRO 8540U is a mobile part with a 28-watt TDP, designed for power-conscious systems. The Intel Core 7 251E is a desktop part with a 65-watt TDP and a much larger core count. The Intel processor offers 18 additional cores and 20 additional threads compared to the AMD processor. For workloads that scale with core count, the Intel Core 7 251E is the clear choice based on specifications.

However, the AMD Ryzen 5 PRO 8540U holds a significant advantage in single-thread performance in the recorded benchmarks. Its Cinebench R23 single-core score of 2182 and PassMark single-thread score of 3563 indicate strong per-core efficiency. The Intel processor has no recorded benchmark scores in the database, so direct comparisons cannot be made. The AMD chip also has a much lower TDP, making it suitable for thin-and-light laptops. The Intel chip requires more power and cooling, but its 24-core configuration provides raw throughput potential that the 6-core AMD part cannot match.

The production status for both is listed as active. The AMD processor was released on 2024-04-15, while the Intel processor was released on 2025-01-12. Neither processor has an unlocked multiplier. For mobile users who prioritize battery life and single-thread responsiveness, the AMD Ryzen 5 PRO 8540U is the appropriate selection. For desktop users who need maximum multi-threaded capacity and have adequate cooling, the Intel Core 7 251E is the stronger candidate on paper.

Specification Differences

The following fields differ between the two processors:

• Manufacturer: AMD versus Intel.
• Cores: 6 versus 24.
• Threads: 12 versus 32.
• Base Clock: 3.20 GHz versus 2.10 GHz.
• Boost Clock: 4.90 GHz versus 5.60 GHz.
• TDP: 28 watts versus 65 watts.
• Socket: AMD Socket FP7 versus Intel Socket 1700.
• Architecture: Zen 4 versus no listed architecture.
• Codename: Hawk Point versus Bartlett Lake.
• Process Node: 4 nm versus 10 nm.
• Foundry: TSMC versus Intel.
• Transistors: 20,900 million versus no listed value.
• Die Size: 137 mm² versus 257 mm².
• L1 Cache: 64 KB per core versus 80 KB per core.
• L2 Cache: 1 MB per core versus 2 MB per core.
• L3 Cache: 16 MB shared versus 36 MB shared.
• Memory Support: DDR5 only versus DDR4 and DDR5.
• PCIe: Gen 4, 14 lanes versus Gen 5, 16 lanes.
• Integrated Graphics: Radeon 740M versus UHD Graphics 770.
• Market Segment: Mobile versus Desktop.
• Release Date: 2024-04-15 versus 2025-01-12.
• Launch MSRP: No value versus $384.
• Part Number: 100-000001329(FP7r2),100-000001331(FP7) versus SRQDUQ657.

Both processors share a dual-channel memory bus, 89.6 GB/s memory bandwidth, ECC memory support, and a locked multiplier.

Head-to-Head Benchmarks

The database contains no head-to-head benchmark results between these two processors. The AMD Ryzen 5 PRO 8540U has a full set of recorded scores, while the Intel Core 7 251E has none. All comparisons must therefore rely on the AMD chip's recorded performance and the Intel chip's listed specifications.

The AMD Ryzen 5 PRO 8540U posts an average benchmark score of 23709. This places it at the 76th percentile among all CPUs in the database. Its nearest rivals include the Intel Core i5-11500 with an average score of 23718 and a delta of 0%, the Intel Xeon 6333P with a score of 23823 and a delta of -0.5%, the Intel Core 3 100HL with a score of 23545 and a delta of 0.7%, and the AMD Ryzen 7 8840U with a score of 23982 and a delta of -1.1%. These figures show the AMD Ryzen 5 PRO 8540U sits within a tight performance cluster, with all rivals within roughly one percent of its average score.

In Cinebench R23, the AMD chip scores 15456 in multi-core and 2182 in single-core. The single-core result is particularly strong, indicating efficient per-thread execution. In Cinebench R20, it scores 6491 multi-core and 916 single-core. Cinebench R15 results show 1557 multi-core and 219 single-core. The PassMark suite shows a multi-thread score of 18218 and a single-thread score of 3563. Integer math scores 56738, floating point math scores 34865, and extended instructions scores 15410. Data compression scores 205703, while data encryption scores 12319. Prime number finding scores 66, physics scores 983, and random string sorting scores 24797.

The Intel Core 7 251E has no recorded benchmarks, so its performance cannot be quantified against the AMD part. The specification sheet suggests a large multi-thread advantage due to 24 cores versus 6, but no measurement confirms this. The AMD chip's percentile ranking of 76 indicates it outperforms the majority of CPUs in the database, despite its modest core count.

Where Each One Wins

The AMD Ryzen 5 PRO 8540U wins in scenarios that prioritize per-core performance and power efficiency. Its single-thread PassMark score of 3563 and Cinebench R23 single-core score of 2182 indicate strong responsiveness in lightly threaded applications. The 28-watt TDP makes it suitable for mobile systems where thermal and power constraints are tight. The 4 nm process node contributes to efficiency. Its average benchmark score of 23709 and 76th percentile ranking confirm it delivers competitive overall performance relative to the broader CPU landscape.

The Intel Core 7 251E wins in scenarios that demand massive multi-threading capacity. Its 24 cores and 32 threads provide a 4x core advantage and nearly 3x thread advantage over the AMD part. The larger L3 cache of 36 MB and higher boost clock of 5.60 GHz suggest strong potential for multi-threaded workloads such as rendering, compilation, and scientific computing. The Gen 5 PCIe interface with 16 lanes offers higher bandwidth for expansion cards and storage. The desktop market segment and 65-watt TDP indicate it is designed for systems with robust cooling.

For mobile productivity and single-thread tasks, the AMD Ryzen 5 PRO 8540U is the better fit based on recorded data. For desktop workloads that scale across many cores, the Intel Core 7 251E offers the structural advantage, though its actual performance remains unmeasured in the database. The two processors do not compete in the same form factor or power class, so the choice depends entirely on the target system type and workload profile.