AMD Ryzen 9 5900 vs Intel Core i9-12900F Comparison

The Intel Core i9-12900F and AMD Ryzen 9 5900 are both 65W desktop processors aimed at high-performance builds, yet the benchmark data reveals a clear and consistent performance hierarchy. The Intel part wins 15 of the 17 head-to-head comparisons, while the AMD chip claims only two victories. The average benchmark scores are remarkably close—47081 for the Intel versus 46971 for the AMD, a mere 0.2% difference—but the distribution of wins is lopsided. Intel’s advantage is broad, spanning both single-threaded and multi-threaded workloads, while AMD’s wins are narrow and specific. This suggests a fundamental difference in how each architecture prioritizes execution, which the detailed scores below will clarify.

Head-to-Head Benchmarks

The most striking Intel victory is in PassMark floating point math, where the Core i9-12900F scores 96452 against the Ryzen 9 5900’s 69124, a massive 39.5% lead. This is not a marginal edge; it indicates that Intel’s Alder Lake architecture has a substantial throughput advantage in floating-point-heavy calculations, which often matter in scientific computing, 3D rendering, and certain physics simulations. The gap is so large that it alone accounts for a significant portion of Intel’s overall average score advantage.

In single-threaded performance, Intel is consistently ahead by a near-uniform margin. The Cinebench R23 single-core score shows Intel at 4305 versus AMD’s 4070, a 5.8% difference, and the same delta appears in Cinebench R15 and R20 single-core tests. The PassMark single-thread test reveals an even larger gap: Intel scores 4017, while AMD manages 3439, a 16.8% lead for Intel. This pattern suggests that Intel’s higher boost clock of 5.10 GHz, compared to AMD’s 4.70 GHz, translates directly into faster per-core execution, though the 16.8% delta in PassMark exceeds what clock speed alone would predict, hinting at IPC advantages as well.

Multi-threaded workloads tell a similar story, though with slightly smaller margins. In Cinebench R23 multi-core, Intel scores 30500 versus AMD’s 28834, a 5.8% lead. The same 5.8% delta repeats across Cinebench R15, R20, and R23 multi-core tests, indicating a consistent scaling advantage for Intel’s 16 cores and 24 threads over AMD’s 12 cores and 24 threads. PassMark multithread shows Intel ahead by 5.7% (35912 vs 33969), and PassMark physics has Intel at 1842 versus 1697, an 8.5% edge. The data suggests that Intel’s extra four physical cores provide a tangible benefit in threaded workloads, even though both chips expose the same 24 threads via simultaneous multithreading.

Memory and data-handling tasks also favor Intel. In PassMark data compression, Intel scores 451402 against AMD’s 411453, a 9.7% win. Random string sorting shows an 11.7% Intel advantage (48477 vs 43386). These tasks are often sensitive to cache hierarchy and memory bandwidth, and Intel’s 30 MB of shared L3 cache, paired with 76.8 GB/s memory bandwidth, appears to outperform AMD’s 64 MB L3 cache and 51.2 GB/s bandwidth in practice. The extended instructions test also goes to Intel by 5.2% (28265 vs 26859), while integer math is nearly a tie—Intel wins by just 0.7% (129504 vs 128641).

AMD’s two wins are notable for their specificity. In PassMark data encryption, the Ryzen 9 5900 scores 26247 versus Intel’s 25251, a 3.8% advantage. Encryption workloads often leverage AES-NI and other cryptographic instructions, where AMD’s Zen 3 implementation appears slightly more efficient. The second and far more dramatic AMD win is in PassMark find prime numbers, where AMD scores 213 against Intel’s 127, a staggering 40.4% lead. This test is notoriously sensitive to integer division and branch prediction, and AMD’s performance here is exceptional. However, the absolute scores are low, meaning this single win contributes little to AMD’s overall average.

FAQ

Q: Which processor has the higher average benchmark score?

A: The Intel Core i9-12900F has an average benchmark score of 47081, which is 0.2% higher than the AMD Ryzen 9 5900’s 46971. Both processors sit at the 93rd percentile among all CPUs, placing them in the same performance tier overall.

Q: How large is Intel’s lead in multi-core rendering workloads?

A: In Cinebench R23 multi-core, Intel scores 30500 versus AMD’s 28834, a 5.8% advantage. This exact 5.8% delta also appears in Cinebench R15 and R20 multi-core tests, indicating a consistent performance gap across rendering generations.

Q: Does AMD win any benchmark by a wide margin?

A: Yes, in the PassMark find prime numbers test, AMD scores 213 versus Intel’s 127, a 40.4% lead. This is the largest delta in either direction across all 17 head-to-head tests, though it is a narrow workload with low absolute scores.

Q: What is the single-threaded performance difference?

A: Intel leads by 5.8% in Cinebench R23 single-core (4305 vs 4070), but the gap widens to 16.8% in PassMark single-thread (4017 vs 3439). Intel’s higher 5.10 GHz boost clock versus AMD’s 4.70 GHz likely contributes to this, but the PassMark gap suggests more than clock speed is at play.

Q: How do the processors compare in memory-intensive tasks?

A: Intel wins PassMark data compression by 9.7% (451402 vs 411453) and random string sorting by 11.7% (48477 vs 43386). Intel supports both DDR4 and DDR5 memory with 76.8 GB/s bandwidth, while AMD is limited to DDR4 at 51.2 GB/s, which may explain the gap.

Q: Which processor has a higher transistor count?

A: The AMD Ryzen 9 5900 contains 8,300 million transistors across two 74 mm² dies, while the Intel Core i9-12900F has a single 215 mm² die with no listed transistor count. AMD’s 7 nm TSMC process is denser than Intel’s 10 nm node, but Intel’s larger die packs 16 cores.

The Verdict

The data points decisively to the Intel Core i9-12900F as the superior processor for most workloads. It wins 15 of 17 benchmarks, with its largest victory being a 39.5% lead in floating-point math. For users running Cinebench-style rendering, PassMark multithreaded tasks, or data compression, Intel’s 16 cores and higher memory bandwidth provide a consistent 5-12% advantage. The single-threaded lead of up to 16.8% also makes Intel the better choice for applications that rely on per-core speed, such as many games and legacy software.

The AMD Ryzen 9 5900, however, is not without merit. Its 40.4% win in prime number finding suggests superior integer division and branch prediction, which could benefit certain mathematical or cryptographic workloads. Its 3.8% edge in data encryption also makes it a reasonable pick for security-focused tasks. Yet these wins are isolated and do not compensate for the broad Intel advantage. For a user who prioritizes encryption performance or specific mathematical operations, the AMD chip is defensible, but for general-purpose desktop computing, the Intel Core i9-12900F emerges as the clear winner based on the benchmark evidence.

Specification Differences

The two processors differ fundamentally in core count and clock speeds. The Intel Core i9-12900F has 16 cores and 24 threads, while the AMD Ryzen 9 5900 has 12 cores and 24 threads. Intel’s base clock is 2.40 GHz with a boost clock of 5.10 GHz; AMD’s base clock is 3.00 GHz with a boost clock of 4.70 GHz. Both have a TDP of 65W, but Intel uses the LGA 1700 socket while AMD uses AM4. Intel’s process node is 10 nm from Intel’s foundry, whereas AMD uses a 7 nm node from TSMC. Intel’s die is 215 mm², while AMD uses two 74 mm² dies totaling 148 mm², with AMD listing 8,300 million transistors. Intel supports DDR4 and DDR5 memory, while AMD supports only DDR4; Intel’s memory bandwidth is 76.8 GB/s versus AMD’s 51.2 GB/s. Intel has 16 PCIe Gen 5 lanes, while AMD offers 20 PCIe Gen 4 lanes. Both support ECC memory and have unlocked multipliers.

Architecture Differences

Intel’s Alder Lake architecture uses a hybrid design, combining high-performance and high-efficiency cores, though the fact pack does not specify the core mix. AMD’s Zen 3 architecture, codename Vermeer, uses a uniform set of 12 cores. The cache layouts differ substantially: Intel has 80 KB of L1 and 1.25 MB of L2 per core, with 30 MB of shared L3 cache. AMD has 64 KB of L1 and 512 KB of L2 per core, but a much larger 64 MB of L3 cache. Despite AMD’s larger L3, Intel’s higher memory bandwidth appears to compensate in the benchmark results. Intel’s 10 nm process and 215 mm² die are larger than AMD’s dual 74 mm² dies on 7 nm, which may affect power efficiency and thermal density. Intel’s support for DDR5 memory is a notable architectural advantage, enabling higher bandwidth, though the fact pack does not include real-world DDR5 performance data.

Where Each One Wins

Intel Core i9-12900F excels in nearly every measured category. It wins all Cinebench tests (R15, R20, R23) in both single-core and multi-core, with margins of 5.6-5.8%. It dominates floating-point math with a 39.5% lead, making it ideal for scientific computing, financial modeling, and any workload that relies on FPU throughput. It wins data compression by 9.7%, random string sorting by 11.7%, and extended instructions by 5.2%, indicating strength in data processing and SIMD-heavy tasks. Its multithread score is 5.7% higher, and physics simulations show an 8.5% advantage. For users running rendering, video encoding, or heavy multitasking, Intel is the clear choice.

AMD Ryzen 9 5900 wins only two tests, but they are meaningful for specific niches. The 40.4% lead in prime number finding suggests AMD’s integer division unit is far more efficient, which could benefit number-theoretic computations, certain cryptographic algorithms, or scientific simulations that rely on primality testing. The 3.8% encryption win makes AMD slightly better for disk encryption, VPN throughput, or secure communication workloads. However, these wins are narrow; the integer math test is a near-tie (Intel leads by 0.7%), suggesting AMD’s advantage is not general. For a user whose primary workload is prime number generation or encryption, AMD is the better pick, but for any other task, Intel’s broader and larger wins make it the superior processor.