AMD Ryzen 5 PRO 8540U vs Intel Core i5-13400 Comparison

Where Each One Wins

The Intel Core i5-13400 and AMD Ryzen 5 PRO 8540U occupy very different positions in the performance landscape, and the recorded data makes that split unusually clear. The Intel part wins 14 of the 17 head-to-head benchmark comparisons, while the AMD part takes only 3. That raw count, however, hides the nuance of what each processor is actually good at.

The i5-13400 dominates in multi-threaded and compute-heavy workloads. In the Cinebench R20 multicore test, it scores 8526 against the Ryzen's 6491, a 31.4% advantage. The gap widens even further in floating-point math, where the Intel chip posts 58786 versus 34865, a massive 68.6% lead. Data compression, integer math, and encryption all follow the same pattern. This is a processor built to chew through parallel workloads, and the numbers reflect that.

The Ryzen 5 PRO 8540U, meanwhile, wins where efficiency and single-thread responsiveness matter more. It takes the Cinebench R23 single-core test with 2182 points against Intel's 1786, an 18.1% margin. It also edges out the Intel chip in PassMark's single-thread test, 3563 to 3538, though that margin is razor-thin at just 0.7%. The AMD part is a mobile chip with a 28 W TDP, so its wins in lightly threaded scenarios make sense. The data suggests a laptop processor that feels snappy in everyday use, even if it cannot match the desktop part's raw throughput.

The interesting outlier is Cinebench R23 multicore, where Intel wins by only 3.2% (15953 to 15456). That is a much smaller gap than in the older R20 test, which could indicate that the Ryzen's Zen 4 architecture scales better under specific sustained loads, or that the benchmark's newer version favors the AMD design's efficiency. Either way, the database shows that Intel's multicore dominance is not universal across all render tests.

Architecture Differences

These two processors come from fundamentally different design philosophies. The Intel Core i5-13400 uses Raptor Lake architecture, built on Intel's 10 nm process with a die size of 215 mm². It is a desktop part, socketed into Intel Socket 1700, and pairs a 65 W TDP with a hybrid core layout. The AMD Ryzen 5 PRO 8540U uses Zen 4 architecture under the Hawk Point codename, fabricated by TSMC on a 4 nm node with a much smaller 137 mm² die and 20,900 million transistors. Its 28 W TDP classifies it clearly as a mobile processor, fitting AMD Socket FP7.

The core configurations differ substantially. Intel brings 10 cores and 16 threads, while AMD fields 6 cores and 12 threads. That difference in thread count helps explain Intel's multicore advantages in the benchmark data. Cache hierarchies also diverge: Intel offers 80 KB of L1 per core, 1.25 MB of L2 per core, and 20 MB of shared L3, while AMD provides 64 KB of L1 per core, 1 MB of L2 per core, and 16 MB of shared L3. Intel's larger caches give it more room to feed its extra cores and threads.

Clock speeds tell a different story. The AMD part has a higher base clock at 3.20 GHz versus Intel's 2.50 GHz, and a higher boost clock at 4.90 GHz versus 4.60 GHz. That clock advantage, combined with the newer 4 nm process, likely explains why the Ryzen wins single-thread performance in Cinebench R23. The process node difference is stark: Intel's 10 nm versus TSMC's 4 nm. The manufacturing advantage shows up in efficiency and transistor density, though the Intel die is physically larger.

Memory support also separates the two. The i5-13400 supports both DDR4 and DDR5, while the Ryzen 5 PRO 8540U supports only DDR5. Both use dual-channel memory buses, but AMD lists a memory bandwidth of 89.6 GB/s while Intel's bandwidth figure is not recorded in the database. ECC memory support is another split: AMD includes it, Intel does not. PCIe connectivity differs as well, with Intel offering Gen 5 with 16 lanes (CPU only) and AMD offering Gen 4 with 14 lanes (CPU only).

Integrated graphics diverge too. Intel uses UHD Graphics 730, while AMD equips the Radeon 740M. The database does not include graphics benchmarks, so any comparison there would be speculative, but the presence of different iGPU solutions reflects their different market targets. The Intel chip is a desktop processor with a launch MSRP of $221, while the AMD part has no recorded launch MSRP and targets the mobile segment.

Head-to-Head Benchmarks

The benchmark suite reveals a clear pattern: Intel wins almost everything, but the margins vary wildly, and AMD's few wins are concentrated in single-thread tests.

Starting with the biggest Intel victories, the floating-point math test shows a 68.6% lead (58786 to 34865). That is the largest delta in the entire comparison. Data compression follows at 46.6% (301481 to 205703), then integer math at 37% (77721 to 56738). Cinebench R20 multicore gives Intel a 31.4% edge (8526 to 6491), and the R15 multicore test shows an even larger 51.4% gap (2358 to 1557). These are not small differences; they represent genuinely different tiers of parallel processing capability.

The PassMark suite reinforces Intel's dominance. Multithread performance shows a 30.2% lead (23719 to 18218). Data encryption is 28.9% ahead (15880 to 12319). Extended instructions, a proxy for AVX and other specialized workloads, favors Intel by 24.3% (19161 to 15410). Physics simulation comes in at 26.6% (1244 to 983), and random string sorting at 24.4% (30851 to 24797). Even finding prime numbers, a test that often favors efficient architectures, goes to Intel by 12.1% (74 to 66).

Single-thread results flip the script. Cinebench R23 single-core is AMD's biggest win at 18.1% (2182 to 1786). PassMark's single-thread test gives AMD a narrow 0.7% edge (3563 to 3538). Notably, Cinebench R15 and R20 single-core tests still favor Intel, by 17.4% (257 to 219) and 31.3% (1203 to 916) respectively. That inconsistency is curious. The database shows AMD winning the newest Cinebench single-thread test but losing the older ones by significant margins. This suggests the R23 version may stress the Zen 4 architecture in ways that older tests do not.

The R23 multicore result deserves special attention. Intel wins, but only by 3.2% (15953 to 15456). Compare that to the R20 multicore gap of 31.4%, and the discrepancy is striking. In R15 multicore, Intel leads by 51.4%. The pattern across Cinebench versions is not linear, which implies the workloads are not perfectly comparable across generations. For a desktop chip with 4 more cores and 4 more threads than its rival, a 3.2% margin is surprisingly small in the newest test.

Specification Differences

A side-by-side look at the recorded specifications highlights where these two processors differ and where they overlap. Both are actively in production, both have locked multipliers, and neither supports unlocked overclocking. They differ in almost every other measurable field.

• Cores: Intel 10, AMD 6
• Threads: Intel 16, AMD 12
• Base clock: Intel 2.50 GHz, AMD 3.20 GHz
• Boost clock: Intel 4.60 GHz, AMD 4.90 GHz
• TDP: Intel 65 W, AMD 28 W
• Socket: Intel Socket 1700, AMD Socket FP7
• Architecture: Raptor Lake, Zen 4 (Hawk Point)
• Process node: Intel 10 nm, TSMC 4 nm
• Foundry: Intel, TSMC
• Die size: 215 mm², 137 mm²
• Transistors: not recorded for Intel, 20,900 million for AMD
• L1 cache: 80 KB per core, 64 KB per core
• L2 cache: 1.25 MB per core, 1 MB per core
• L3 cache: 20 MB shared, 16 MB shared
• Memory support: DDR4 and DDR5, DDR5 only
• Memory bandwidth: not recorded for Intel, 89.6 GB/s for AMD
• ECC memory: false for Intel, true for AMD
• PCIe: Gen 5 with 16 lanes, Gen 4 with 14 lanes
• Integrated graphics: UHD Graphics 730, Radeon 740M
• Market segment: Desktop, Mobile
• Release date: 2023-01-03, 2024-04-15
• Launch MSRP: $221, not recorded

The release dates are notable. Intel launched over a year earlier, in January 2023, while AMD arrived in April 2024. That generation gap shows up in the process node and efficiency numbers. The AMD part is built on a much newer 4 nm process with a dramatically smaller die, which helps explain its lower TDP despite higher clock speeds.

FAQ

Q: Which processor is faster in multi-threaded workloads?

A: The Intel Core i5-13400 wins 14 of the 17 head-to-head benchmarks, including all multi-threaded tests. Its largest advantage is 68.6% in floating-point math, and it leads by 30.2% in PassMark multithread and 31.4% in Cinebench R20 multicore.

Q: Does the AMD Ryzen 5 PRO 8540U win any benchmarks?

A: Yes, it wins 3 tests: Cinebench R23 single-core (by 18.1%), PassMark single-thread (by 0.7%), and the duplicate PassMark singlethread test (also by 0.7%). These are all single-thread or lightly threaded workloads.

Q: Why does Intel win Cinebench R20 multicore by 31.4% but only by 3.2% in R23 multicore?

A: The database shows a significant discrepancy between benchmark versions. In R20, Intel scores 8526 against AMD's 6491. In R23, Intel scores 15953 against AMD's 15456. The newer R23 test appears to narrow the gap substantially, possibly reflecting architectural differences in how the workloads scale.

Q: How do their TDPs affect their likely use cases?

A: Intel's 65 W TDP and desktop Socket 1700 indicate a desktop processor meant for sustained heavy workloads. AMD's 28 W TDP and mobile Socket FP7 suggest a laptop processor prioritizing efficiency, which is consistent with its higher clock speeds but fewer cores.

Q: Which processor has more cache?

A: Intel has more cache at every level: 80 KB L1 per core versus 64 KB L1 per core, 1.25 MB L2 per core versus 1 MB L2 per core, and 20 MB shared L3 cache versus 20 MB shared L3 for AMD's 16 MB shared. Intel's larger L3 advantage totals 20 MB of L3 versus AMD's 16 MB.

Q: Do both processors support ECC memory?

A: No. The AMD Ryzen 5 PRO 8540U supports ECC memory, while the Intel Core i5-13400 does not. AMD also supports only DDR5, while Intel supports both DDR4 and DDR5.

The Verdict

The data paints a clear picture: the Intel Core i5-13400 is the stronger processor for multi-threaded and compute-heavy tasks, winning 14 of 17 head-to-head tests with margins that often exceed 30%. Its 10 cores and 16 threads give it a structural advantage over the AMD part's 6 cores and 12 threads, and its larger cache hierarchy supports that extra parallelism. Anyone choosing between these two for rendering, data compression, encryption, or floating-point math should look at Intel's numbers and the 68.6% lead in floating-point math, the 46.6% lead in data compression, and the 30.2% lead in multithread performance.

The AMD Ryzen 5 PRO 8540U is a different kind of processor. It is a mobile chip with a 28 W TDP, and it wins in single-thread performance in the newest Cinebench test by 18.1%. Its higher base and boost clocks, 3.20 GHz and 4.90 GHz respectively, combined with the 4 nm TSMC process, give it an efficiency profile that the Intel desktop part cannot match. The data shows a processor that would feel responsive in everyday tasks, though its 6-core, 12-thread configuration limits its ceiling in parallel workloads.

The average benchmark scores tell a similar story. Intel averages 24280 across its benchmark suite, while AMD averages 23709, a difference of roughly 2.4%. Both sit at the 76th percentile of all CPUs, so the database ranks them in the same overall tier. The nearest rivals for each processor reinforce this: Intel's closest competitor is the Intel Core i7-1360P at a 0.3% delta, while AMD's closest is the Intel Core i5-11500 at a 0% delta. These processors are close in aggregate, but their strengths are polarized.

For a desktop builder prioritizing raw compute, the Intel Core i5-13400 is the clear choice from this data. For a laptop user who needs efficiency and single-thread responsiveness, the AMD Ryzen 5 PRO 8540U offers a compelling profile. The R23 multicore result, with Intel leading by only 3.2%, hints that AMD's newer architecture closes the gap in the most modern rendering workload. That is worth watching, as it suggests the mobile chip punches above its core count in at least one significant test.