AMD Ryzen 9 3900 vs Intel Core i5-14500 Comparison

The AMD Ryzen 9 3900 and Intel Core i5-14500 occupy nearly the same position in the overall performance hierarchy, with average benchmark scores of 44039 and 43861 respectively, placing both in the 92nd percentile of all CPUs. The aggregate data shows a razor-thin margin, with the AMD part holding a 0.4% advantage in average score, yet the individual benchmark results reveal a starkly divided workload profile. The Intel processor wins 12 of the 17 head-to-head comparisons, while the AMD chip takes 5, but the magnitude of those victories tells a more complex story than the win count alone.

Head-to-Head Benchmarks

The most dramatic single-core result favors Intel decisively. In PassMark single-thread testing, the Core i5-14500 scores 3953 against 2604 for the Ryzen 9 3900, a 34.1% advantage that represents the largest performance gap in either direction across the entire test suite. This pattern repeats across all Cinebench single-core tests, where Intel leads by a consistent 2.8% to 2.9% margin, with scores of 380 versus 369 in R15, 1585 versus 1540 in R20, and 3775 versus 3669 in R23.

Multi-core performance follows a similar but narrower trend. The Intel part leads every Cinebench multi-core test by precisely 2.8%, including a 26741 versus 25988 result in R23 and a 11231 versus 10914 result in R20. PassMark multithread testing shows the same 2.8% gap, with scores of 31463 for Intel and 30586 for AMD. The consistency of this 2.8% delta across four separate multi-core Cinebench iterations suggests a stable architectural advantage rather than a workload-specific quirk.

The AMD Ryzen 9 3900 fights back in specialized instruction workloads. Its most dominant win comes in PassMark find prime numbers, where it scores 203 against Intel's 110, an 84.5% advantage that is by far the largest relative difference in any test. Data encryption shows a 21.6% lead for AMD (26657 versus 21924), extended instructions a 12.5% lead (26073 versus 23184), data compression an 8.5% lead (413887 versus 381384), and random string sorting a 6.8% lead (44902 versus 42052).

The remaining PassMark tests favor Intel with substantial margins. Floating point math shows the second-largest gap overall, with Intel scoring 80387 against AMD's 56730, a 29.4% advantage. Physics testing gives Intel an 11.7% lead (1832 versus 1617), and integer math a 10.4% lead (108988 versus 97698).

Architecture Differences

The two processors represent fundamentally different design philosophies separated by roughly four and a half years of development. The AMD Ryzen 9 3900, released on September 23, 2019, uses the Zen 2 architecture under the Matisse codename, built on TSMC's 7 nm process with 7,600 million transistors spread across two 74 mm² dies. The Intel Core i5-14500, released on January 7, 2024, uses the Raptor Lake architecture under the Raptor Lake-R codename, built on Intel's 10 nm process with a single 215 mm² die.

Core configurations differ significantly. The AMD part offers 12 cores and 24 threads, while the Intel part provides 14 cores and 20 threads. This means the Ryzen 9 3900 has fewer physical cores but more threads, reflecting AMD's use of simultaneous multithreading across all cores, whereas Intel's hybrid design likely includes a mix of performance and efficiency cores that do not all support hyper-threading. The Intel base clock of 2.60 GHz is lower than AMD's 3.10 GHz, but the Intel boost clock of 5.00 GHz substantially exceeds AMD's 4.30 GHz.

Cache hierarchies are structured differently. AMD allocates 64 KB of L1 cache per core, 512 KB of L2 per core, and a large 64 MB L3 cache. Intel provides 80 KB of L1 per core, 1.25 MB of L2 per core, and a comparatively modest 24 MB of shared L3 cache. The larger L3 on the AMD part likely contributes to its strong compression and encryption performance, while Intel's higher per-core L2 may aid its floating point and integer throughput.

Memory support differs in scope. The AMD chip supports only DDR4 with dual-channel memory and a defined memory bandwidth of 51.2 GB/s. The Intel chip supports both DDR4 and DDR5 in dual-channel configuration, though its memory bandwidth is not specified in the data. ECC memory is supported on the Intel part but not on the AMD part. PCIe capabilities also diverge, with AMD offering Gen 4 across 24 CPU lanes while Intel offers Gen 5 across 16 CPU lanes.

The Intel processor integrates UHD Graphics 770, whereas the AMD Ryzen 9 3900 has no integrated graphics. Both CPUs have a TDP of 65 watts and are marked as Active in production status. The AMD part has an unlocked multiplier, while the Intel part is locked. Launch MSRP for the AMD is $499; the Intel launch MSRP is $232.

The Verdict

The data supports a clear division of labor. For general-purpose computing, single-threaded responsiveness, and floating-point-heavy workloads, the Intel Core i5-14500 is the superior choice. Its 34.1% lead in PassMark single-thread testing and 29.4% lead in floating point math are decisive, and its consistent 2.8% advantage across all Cinebench multi-core tests indicates that even in parallel rendering scenarios, the newer Intel architecture holds an edge.

For security-related workloads, data compression, and cryptography, the AMD Ryzen 9 3900 is the stronger performer. The 84.5% advantage in prime number finding, 21.6% in data encryption, and 8.5% in data compression suggest that the larger L3 cache and 24-thread configuration provide meaningful benefits for these specific instruction patterns.

The overall average benchmark scores are effectively tied, with AMD ahead by 0.4%, and both CPUs rank in the 92nd percentile. Neither processor can be declared an overall winner based on aggregate data. Instead, the choice hinges on workload priority. Users whose tasks involve encryption, compression, or heavy integer-based security operations should favor the Ryzen 9 3900. Users prioritizing floating point math, physics simulations, or single-threaded application performance should favor the Core i5-14500.

Specification Differences

The two processors differ across several core specifications. Core count differs, with AMD at 12 cores and Intel at 14 cores. Thread count differs inversely, with AMD at 24 threads and Intel at 20 threads. Base clocks are 3.10 GHz for AMD and 2.60 GHz for Intel, while boost clocks are 4.30 GHz for AMD and 5.00 GHz for Intel. Both share a 65 W TDP.

Socket compatibility differs, with AMD using Socket AM4 and Intel using Socket 1700. The architecture is Zen 2 for AMD versus Raptor Lake for Intel. Process nodes are 7 nm for AMD and 10 nm for Intel. Transistor counts are 7,600 million for AMD, while Intel's transistor count is not specified. Die sizes are 2x 74 mm² for AMD and 215 mm² for Intel.

Cache configurations differ per level. L1 cache is 64 KB per core for AMD and 80 KB per core for Intel. L2 cache is 512 KB per core for AMD and 1.25 MB per core for Intel. L3 cache is 64 MB for AMD and 24 MB shared for Intel. Memory support is DDR4 for AMD and DDR4/DDR5 for Intel. Memory bandwidth is 51.2 GB/s for AMD, while unspecified for Intel. ECC memory is unsupported on AMD and supported on Intel. PCIe is Gen 4 with 24 lanes for AMD and Gen 5 with 16 lanes for Intel. Integrated graphics are absent on AMD and present as UHD Graphics 770 on Intel. The multiplier is unlocked on AMD and locked on Intel.

FAQ

Q: Which processor has a higher boost clock?

A: The Intel Core i5-14500 has a boost clock of 5.00 GHz, compared to 4.30 GHz for the AMD Ryzen 9 3900.

Q: How does the AMD Ryzen 9 3900 compare in data encryption performance?

A: The AMD Ryzen 9 3900 scores 26657 in PassMark data encryption, which is 21.6% higher than the Intel Core i5-14500's score of 21924.

Q: Does the Intel Core i5-14500 support ECC memory?

A: Yes, the Intel Core i5-14500 supports ECC memory. The AMD Ryzen 9 3900 does not list ECC memory support.

Q: What is the largest performance gap between the two CPUs?

A: The largest gap is in PassMark find prime numbers, where the AMD Ryzen 9 3900 scores 203 against Intel's 110, an 84.5% advantage for AMD.

Q: Which processor has more threads?

A: The AMD Ryzen 9 3900 has 24 threads, while the Intel Core i5-14500 has 20 threads, even though the Intel part has more physical cores (14 versus 12).

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

A: The Intel Core i5-14500 scores 3953 in PassMark single-thread testing versus 2604 for the AMD Ryzen 9 3900, giving Intel a 34.1% advantage.

Where Each One Wins

The AMD Ryzen 9 3900 wins in five benchmark categories, all of which involve specialized instruction handling or data manipulation. Prime number finding shows its largest advantage at 84.5%, followed by data encryption at 21.6%, extended instructions at 12.5%, data compression at 8.5%, and random string sorting at 6.8%. These results suggest workloads involving cryptography, compression algorithms, and complex bit manipulation will see notable performance benefits on the AMD platform.

The Intel Core i5-14500 wins in twelve benchmark categories, including every Cinebench test and several PassMark tests. Its most significant wins are in single-thread performance at 34.1%, floating point math at 29.4%, physics at 11.7%, and integer math at 10.4%. The consistent 2.8% advantage across all multi-core Cinebench tests indicates that rendering and video encoding workloads will favor Intel. The floating point advantage suggests scientific computing and simulation tasks benefit from the Intel architecture.

For a user building a system primarily for gaming or general productivity, the Intel Core i5-14500's single-thread and floating point advantages make it the stronger candidate. For a system dedicated to file compression, encryption, or security-related processing, the AMD Ryzen 9 3900's specialized instruction wins provide a compelling case. The two processors are near-equal in overall average score, with AMD ahead by 0.4%, meaning the workload-specific wins should drive the purchasing decision.