AMD EPYC 7343 vs Intel Core i9-13900KF Comparison

Head-to-Head Benchmarks

The recorded data shows a decisive overall victory for the Intel Core i9-13900KF, which wins 15 of the 17 head-to-head comparisons. The AMD EPYC 7343 claims wins in only 2 tests, but those wins are substantial and revealing. In the PassMark find prime numbers test, the EPYC 7343 scores 382 against 225 for the Core i9-13900KF, a 69.8% advantage. This is the largest percentage gap in either direction across the entire comparison. The EPYC 7343 also wins the PassMark physics test with 4774 points against 2956, a 61.5% lead.

Beyond those two tests, the Intel part dominates. In Cinebench R23 multicore, the Core i9-13900KF posts 48855 points versus 37097, a 24.1% advantage. The single-core results follow the same pattern: 6897 against 5237, again a 24.1% gap. This consistency is striking. Across every Cinebench generation recorded (R15, R20, R23), the delta sits at either 24.1% or 24.2% in favor of Intel, indicating a uniform performance differential that scales with the workload rather than a quirk of one benchmark version.

The PassMark suite shows the same trend with varying magnitudes. Floating point math delivers the largest Intel win at 42.8% (150869 versus 86311). Single-thread performance shows a 40.2% gap (4584 versus 2740). Integer math trails by 24.6% (206859 versus 156033), and multithread performance by 24.4% (57729 versus 43644). Data compression runs 25% faster on the Intel chip (786218 versus 589770), while data encryption is 18.9% faster (46186 versus 37454). Extended instructions favor Intel by 22.7% (46084 versus 35626), and random string sorting by 21.9% (86510 versus 67576).

The overall average benchmark scores align with the head-to-head results. The EPYC 7343 records an average benchmark score of 64202, while the Core i9-13900KF records 61841. This is a notable inversion: the EPYC has a higher average score across its broader benchmark set, yet it loses the direct comparison. The reason is visible in the nearest rival data. The EPYC 7343 sits at the 93rd percentile among all CPUs, with rivals like the Intel Core i9-13900KS (average score 64051, a 0.2% delta) and AMD Ryzen AI Max PRO 390 (63765, 0.7% delta). The Core i9-13900KF also sits at the 93rd percentile, with the Intel Core Ultra 7 270HX Plus matching it exactly at 61834 (0% delta) and the Core i9-13900K just 0.1% behind. Both processors belong to the same performance tier in the database, but the direct benchmarks place Intel clearly ahead in nearly every measurable category.

FAQ

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

A: The Intel Core i9-13900KF wins 15 of the 17 recorded comparisons. The AMD EPYC 7343 wins only 2, specifically the PassMark find prime numbers test and the PassMark physics test.

Q: How large is the EPYC 7343's advantage in its best test?

A: In the PassMark find prime numbers test, the EPYC 7343 scores 382 versus 225 for the Core i9-13900KF, a 69.8% lead. This is the largest percentage difference in the entire head-to-head set.

Q: Are the Cinebench results consistent across versions?

A: Yes. The Core i9-13900KF leads by 24.1% in Cinebench R15 multicore, R20 multicore, and R23 multicore. Single-core results show a 24.2% lead in R15 and 24.1% in both R20 and R23, all favoring Intel.

Q: Where does the Core i9-13900KF achieve its biggest win?

A: The largest Intel victory is in PassMark floating point math, where it scores 150869 against 86311, a 42.8% advantage. Single-thread performance is close behind at 40.2% (4584 versus 2740).

Q: How do the two processors compare in overall percentile ranking?

A: Both sit at the 93rd percentile among all CPUs in the database. Their nearest rivals also overlap in average score range, with the EPYC 7343 at 64202 and the Core i9-13900KF at 61841.

Q: What does the average benchmark score comparison show?

A: The EPYC 7343 has a higher average benchmark score (64202 versus 61841), yet it loses the direct head-to-head. This indicates the EPYC's average is buoyed by tests not shared in the direct comparison, while the Intel part is faster in the workloads that are directly measured.

Architecture Differences

The fundamental architectural split is evident from the process node alone. The AMD EPYC 7343 uses a 7 nm process fabricated by TSMC, while the Intel Core i9-13900KF uses a 10 nm process from Intel's own foundry. The EPYC 7343 implements the Zen 3 architecture under the Milan codename, part of the EPYC 7003 series. The Core i9-13900KF uses the Raptor Lake architecture, specifically Raptor Lake-S, within the Core 13th Gen family.

Core counts differ significantly. The EPYC 7343 has 16 cores and 32 threads. The Core i9-13900KF has 24 cores and 32 threads. Despite the 8-core difference, both present 32 threads to the operating system, a result of Intel's hybrid arrangement where not all cores contribute equally to thread count. The EPYC achieves 32 threads from 16 cores using simultaneous multithreading.

Cache hierarchies are built on different philosophies. The EPYC 7343 uses a large shared L3 cache of 128 MB, with 64 KB of L1 and 512 KB of L2 per core. The Core i9-13900KF uses 80 KB of L1 per core, 2 MB of L2 per core, and only 36 MB of shared L3. The L3 difference is stark: 128 MB versus 36 MB, a 3.5x advantage for the EPYC. The Intel part compensates with a larger per-core L2 allocation.

The transistor counts tell a different story. The EPYC 7343 integrates 16,600 million transistors across a die size of 4x 81 mm², reflecting a chiplet design. The Core i9-13900KF has a monolithic die of 257 mm², with no transistor count recorded in the database. The physical package strategy is entirely different, with AMD using multiple chiplets and Intel using a single unified die.

Memory architecture diverges sharply. The EPYC 7343 supports DDR4 memory over an eight-channel bus, delivering a recorded memory bandwidth of 204.8 GB/s. The Core i9-13900KF supports both DDR4 and DDR5, but over a dual-channel bus, with no memory bandwidth figure recorded. The EPYC's eight-channel configuration is characteristic of its server/workstation positioning, while the dual-channel setup reflects the desktop market segment.

PCIe capabilities also separate the two. The EPYC 7343 provides PCIe Gen 4 with 128 lanes from the CPU. The Core i9-13900KF provides PCIe Gen 5 with 20 lanes. The lane count difference is enormous, 128 versus 20, reflecting the EPYC's role in systems that need extensive I/O expansion. The generation difference favors Intel in raw bandwidth per lane, but the EPYC offers far more lanes.

Neither processor includes integrated graphics. Both rely on discrete GPUs. The production status for both is recorded as Active. The release dates differ by about a year and a half, with the EPYC 7343 launching in March 2021 and the Core i9-13900KF in September 2022.

Specification Differences

The base clock of the EPYC 7343 is 3.20 GHz, while the Core i9-13900KF runs at 3.00 GHz. The boost clocks diverge far more: 3.90 GHz for the EPYC versus 5.80 GHz for the Intel part. That 1.90 GHz boost advantage is the single largest specification gap and explains the single-thread benchmark results.

Thermal design power differs by 65 watts. The EPYC 7343 has a TDP of 190 watts, while the Core i9-13900KF is rated at 125 watts. The EPYC draws more power despite lower boost clocks, a consequence of its server-oriented design and eight-channel memory controller.

Sockets are incompatible. The EPYC 7343 uses AMD Socket SP3, while the Core i9-13900KF uses Intel Socket 1700. Memory support differs as noted: the EPYC is DDR4-only over eight channels, while the Intel part accepts both DDR4 and DDR5 over two channels. ECC memory is supported by both processors.

The multiplier is locked on the EPYC 7343 and unlocked on the Core i9-13900KF. This means the Intel part allows overclocking through multiplier adjustment, while the EPYC does not. The market segments reflect their intended uses: Server/Workstation for the EPYC, Desktop for the Core i9.

The launch MSRP for the EPYC 7343 is $1565. The launch MSRP for the Core i9-13900KF is $564. Part numbers are listed as 100-000000338100-100000338WOF for the EPYC and SRMBJ for the Intel chip. The EPYC 7343's die size is listed as 4x 81 mm², while the Core i9-13900KF uses a 257 mm² die. Process node and foundry differ as covered in the architecture section.

The Verdict

The data points to a clear split by workload type. The Intel Core i9-13900KF is the faster processor in the overwhelming majority of recorded benchmarks. It wins 15 of 17 direct comparisons, including every Cinebench test, every PassMark test except two, and all single-thread tests. The margins are consistent, typically 24% to 25% in multicore workloads and over 40% in floating point and single-thread performance. For users running general-purpose computing, rendering, encryption, compression, or any workload that resembles the PassMark suite, the Core i9-13900KF is the clear choice based on the recorded data.

The AMD EPYC 7343 wins in exactly two areas, but those areas matter for specific use cases. The 69.8% lead in find prime numbers suggests a significant advantage in prime-related integer workloads, likely tied to the larger L3 cache. The 61.5% lead in the physics test points to strength in physics simulation workloads. For users running these specific tasks, the EPYC 7343 delivers meaningfully better performance.

The memory and I/O picture also favors the EPYC for certain deployments. The eight-channel DDR4 memory bus delivers 204.8 GB/s of bandwidth, versus the dual-channel configuration of the Intel part. The 128 PCIe Gen 4 lanes dwarf the 20 PCIe Gen 5 lanes of the Core i9. These features do not appear in the benchmark scores, but they define what each processor can do in a full system. The EPYC 7343 is built for servers and workstations that need large memory footprints and extensive expansion. The Core i9-13900KF is built for desktops where raw compute speed and overclocking matter more than I/O capacity.

The average benchmark score complicates a simple verdict. The EPYC 7343 posts a higher average (64202 versus 61841), yet loses the direct head-to-head. This suggests the EPYC holds up well across a wider range of tests in the database, while the Core i9 excels in the specific workloads measured head-to-head. Both sit at the 93rd percentile, and their nearest rivals overlap in score ranges. The EPYC's nearest rival, the Intel Core i9-13900KS, sits just 0.2% away, while the Core i9-13900KF's closest competitor, the Intel Core Ultra 7 270HX Plus, matches it exactly. Neither processor is isolated at the top of its tier.

The verdict depends on the workload. For compute-heavy desktop applications, the Core i9-13900KF wins on nearly every recorded metric, with particular strength in single-threaded and floating point tasks. For server workloads that leverage the EPYC's 128 MB L3 cache, eight-channel memory, and 128 PCIe lanes, the EPYC 7343 offers capabilities the Intel part cannot match, along with wins in prime number and physics benchmarks. The power envelope also differs, with the EPYC rated at 190 watts and the Intel part at 125 watts, making the Core i9 more efficient per watt in the recorded tests. The data does not support a single winner. It supports two different processors for two different jobs.