AMD Ryzen 9 3900X vs Intel Core i7-13700KF Comparison

Head-to-Head Benchmarks

The benchmark database records 17 direct head-to-head comparisons between the Intel Core i7-13700KF and the AMD Ryzen 9 3900X. The Intel part wins 16 of those comparisons, while the AMD processor claims a single victory. The margin of victory is the defining story here: Intel does not merely edge ahead in most tests, it often doubles or nearly triples the AMD score.

The most extreme gap appears in Cinebench R23 single-core. The Intel chip scores 5464 against 1370 for the Ryzen, a delta of 298.8%. That is not a marginal improvement; it reflects a fundamental difference in per-thread capability between the two architectures. Cinebench R15 single-core tells a similar story, with Intel at 550 versus AMD at 207, a 165.7% advantage.

Multi-core results are equally lopsided. In Cinebench R23 multi-core, the Intel Core i7-13700KF records 38704, while the Ryzen 9 3900X manages 19000. That is a 103.7% delta, meaning the Intel processor delivers more than double the multi-threaded rendering score. Cinebench R15 multi-core shows a smaller but still substantial 27.9% gap, with Intel at 3901 and AMD at 3049.

Geekbench results reinforce the pattern. The Intel chip scores 2435 in single-core against 1664 for AMD, a 46.3% lead. In multi-core, Intel records 18258 versus 11948, a 52.8% advantage. These are broad synthetic workloads, and the Intel part wins both by wide margins.

PassMark tests cover a wider range of workloads, and Intel dominates nearly all of them. Floating point math shows a 96.8% delta, with Intel at 114997 and AMD at 58434. Integer math gives Intel a 55.1% lead, 154507 versus 99628. Multithread performance lands at 45817 for Intel and 32544 for AMD, a 40.8% gap. Physics tests show Intel at 2650 against 1794, a 47.7% margin.

Data compression and encryption are more moderate wins for Intel. Compression scores 596493 versus 448906, a 32.9% delta. Encryption records 33314 versus 28586, a 16.5% lead. Extended instructions show a 25.6% gap, 36700 against 29221. Random string sorting gives Intel a 29.9% edge, 62726 versus 48300.

The single AMD win comes in PassMark find prime numbers. Here the Ryzen 9 3900X scores 214, while the Intel chip records 186. That is a 13.1% advantage for AMD. This is a narrow, specialized workload, and it does little to offset the broader pattern. Notably, the single-thread PassMark tests show Intel at 4336 versus 2703, a 60.4% delta, and the database lists this result twice under slightly different test names.

The Verdict

The data points to a clear conclusion: the Intel Core i7-13700KF is the faster processor in almost every measurable workload. The 16-to-1 win count is decisive, and the margins are not small. In single-threaded tasks, the Intel chip leads by anywhere from 46.3% to 298.8%. In multi-threaded tasks, it leads by 27.9% to 103.7%. For users whose priority is raw performance, the Intel part is the obvious choice.

The AMD Ryzen 9 3900X retains one niche: prime number finding, where it beats Intel by 13.1%. That is a narrow victory in a specific mathematical workload. Outside of that test, the database shows no other area where the AMD chip matches or exceeds the Intel part.

The average benchmark scores place both CPUs at the 89th percentile among all processors, but the averages differ: Intel records 47330, AMD records 46487. The Intel part sits between the Intel Core Ultra X9 378H and the Intel Core i9-12900F in the nearest rivals list, with deltas of -0.3% and +0.3% respectively. The AMD part sits between the Intel Xeon w3-2535 and the AMD Ryzen 9 7845HX, with deltas of -0.4% and +0.4%. Both CPUs are competitive within their respective peer groups, but the head-to-head results show the Intel part pulling ahead of the AMD part by a wide margin.

Users who already own an AM4 platform and want to keep their motherboard may prefer the Ryzen 9 3900X, but the benchmark data does not support a performance-based argument for that choice. The Intel Core i7-13700KF wins on every major benchmark category recorded in the database.

Architecture Differences

The two processors come from different architectural lineages. The Intel Core i7-13700KF uses Raptor Lake, specifically the Raptor Lake-S die, built on a 10 nm process at Intel's own foundry. The AMD Ryzen 9 3900X uses Zen 2, codenamed Matisse, built on a 7 nm process at TSMC. The process node difference is notable: TSMC's 7 nm is denser than Intel's 10 nm, but the Intel chip compensates with a larger die area.

The Intel die measures 257 mm², while the AMD chip uses two dies of 74 mm² each, for a combined 148 mm². The AMD processor packs 7,600 million transistors across those two chiplets, while the Intel database entry does not list a transistor count. The Intel chip has a single larger die, while the AMD chip uses a multi-die approach with two compute chiplets.

Core and cache configurations differ substantially. The Intel Core i7-13700KF has 16 cores and 24 threads. The AMD Ryzen 9 3900X has 12 cores and 24 threads. Both support 24 threads, but Intel achieves this with 16 physical cores, while AMD uses 12 cores with simultaneous multithreading.

Cache layouts are also different. The Intel chip provides 80 KB of L1 per core, 2 MB of L2 per core, and 30 MB of shared L3. The AMD chip offers 64 KB of L1 per core, 512 KB of L2 per core, and a larger 64 MB of shared L3. The AMD L3 cache is more than double the Intel L3, yet the benchmark results show Intel winning despite the smaller cache.

Memory support diverges as well. The Intel processor supports both DDR4 and DDR5, while the AMD chip supports only DDR4. Both use dual-channel memory buses. The AMD entry lists a memory bandwidth of 51.2 GB/s, while the Intel entry does not record a bandwidth figure. ECC memory support also differs: the Intel chip supports ECC, the AMD chip does not.

PCI Express connectivity is another differentiator. The Intel part supports Gen 5 with 20 CPU lanes, while the AMD part supports Gen 4 with 24 CPU lanes. The Intel chip has the newer PCIe generation, but the AMD chip offers more total lanes.

Specification Differences

The two processors differ across nearly every core specification. Core count: Intel has 16, AMD has 12. Thread count is identical at 24, but the physical core difference matters for multi-threaded workloads. Base clock: Intel runs at 3.40 GHz, AMD runs at 3.80 GHz. The AMD chip starts from a higher base clock, but the Intel chip has a much higher boost clock: 5.40 GHz versus 4.60 GHz. That 0.80 GHz boost advantage explains much of the single-threaded performance gap.

Thermal design power differs as well. The Intel part is rated at 125 W, while the AMD part is rated at 105 W. The Intel chip consumes more power by specification, but it also delivers significantly higher performance.

Socket compatibility is entirely different. The Intel chip uses Intel Socket 1700, while the AMD chip uses AMD Socket AM4. These are not interchangeable, so platform choice determines which CPU is even eligible.

The process node difference is recorded at 10 nm for Intel and 7 nm for AMD. The foundries differ: Intel fabricates its own chip, while TSMC fabricates the AMD chip. Die size: Intel uses a single 257 mm² die, AMD uses two 74 mm² dies.

Memory support: Intel handles DDR4 and DDR5, AMD handles only DDR4. ECC memory: Intel supports it, AMD does not. PCIe generation: Intel is Gen 5 with 20 lanes, AMD is Gen 4 with 24 lanes.

Release dates are far apart. The Intel chip launched on 2022-09-26, while the AMD chip launched on 2019-07-06. Both are marked as Active in production status. Both have unlocked multipliers. The launch MSRP for the Intel part is $384, and for the AMD part it is $499.

FAQ

Q: Which processor wins more head-to-head benchmark comparisons?

A: The Intel Core i7-13700KF wins 16 of 17 recorded head-to-head benchmarks. The AMD Ryzen 9 3900X wins 1.

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

A: The largest gap is in Cinebench R23 single-core, where the Intel chip scores 5464 against 1370 for AMD, a 298.8% delta.

Q: In which benchmark does the AMD Ryzen 9 3900X beat the Intel Core i7-13700KF?

A: The AMD chip wins in PassMark find prime numbers, scoring 214 against 186 for Intel, a 13.1% advantage.

Q: How do the core counts compare?

A: The Intel chip has 16 cores and 24 threads. The AMD chip has 12 cores and 24 threads.

Q: Do both processors support the same memory types?

A: No. The Intel chip supports DDR4 and DDR5. The AMD chip supports only DDR4.

Q: What are the average benchmark scores for each CPU?

A: The Intel Core i7-13700KF records an average benchmark score of 47330. The AMD Ryzen 9 3900X records 46487.

Where Each One Wins

The Intel Core i7-13700KF is the clear winner across nearly every workload category. Single-threaded tasks show the largest margins, with Cinebench R23 single-core at 298.8% and Cinebench R15 single-core at 165.7%. Users running lightly threaded applications, such as older games or productivity software that relies on one or two cores, will see a massive advantage with the Intel chip.

Multi-threaded workloads also favor Intel, though by smaller margins. Cinebench R23 multi-core shows a 103.7% lead, while Cinebench R15 multi-core shows a 27.9% lead. Rendering, video encoding, and compilation tasks that use all available cores will still run faster on the Intel chip, but the gap narrows compared to single-threaded results.

Floating point math, integer math, physics, data compression, encryption, and extended instructions all show Intel leading by margins from 16.5% to 96.8%. These are broad categories covering scientific computing, cryptographic workloads, and general arithmetic. The Intel chip is consistently ahead, though the exact margin varies by workload.

The single AMD victory in prime number finding is a specialized case. Prime number generation is a specific integer workload with particular algorithmic characteristics. The Ryzen 9 3900X beats Intel by 13.1% in this test, which could matter for users running number theory research or similar prime-focused computations. Outside of that narrow niche, the AMD chip does not win any other recorded benchmark.

Users who need maximum performance across the board should choose the Intel Core i7-13700KF. Users with specialized prime number workloads might prefer the AMD chip, but they would be sacrificing significant performance in every other measured category. The AMD chip also offers a lower TDP of 105 W versus 125 W for Intel, which could appeal to users with strict power limits. The AMD chip has a higher base clock of 3.80 GHz, but the Intel boost clock of 5.40 GHz dominates in practice.