Intel Core i9-13900KS

The Intel Core i9-13900KS is a 24-core, 32-thread desktop processor from the Raptor Lake-S family, built on Intel's 10 nm process with a die size of 257 mm². It operates at a base clock of 3.20 GHz and a boost clock of 6.00 GHz, with a TDP of 150 W. The launch MSRP is $699. Its average benchmark score of 63990 places it in the 95th percentile of all CPUs, signaling top-tier performance across a wide range of workloads.

Benchmark Performance

The i9-13900KS posts an average benchmark score of 63990, which places it in the 95th percentile among all processors. Against its nearest rivals, the deltas are narrow: it trails the AMD EPYC 4464P by 1.2%, the AMD EPYC 7343 by 0.3%, and the Intel Core Ultra 7 265 by 0.2%, while leading the Intel Core i7-13790F by 1.0%. These sub-2% differences indicate that the 13900KS sits in a tightly contested performance band, where workload-specific optimization often matters more than raw average score.

In multi-threaded tests, the Cinebench R23 multicore score reaches 51548, while the single-core score is 7277. Geekbench shows a multicore result of 21426 and a single-core of 3125. Passmark reports a multithread score of 60644 and a single-thread score of 4712. The 3DMark thread-scaling suite shows a clear progression: 2412 at 2 threads, 4754 at 4 threads, 8812 at 8 threads, 11616 at 16 threads, and 16243 at max threads. This scaling pattern demonstrates that the 32-thread configuration is effectively utilized, with no significant drop-off in per-thread efficiency as core count increases.

The nearest rivals' average scores are 64112 (Core Ultra 7 265), 64202 (EPYC 7343), 63348 (i7-13790F), and 64756 (EPYC 4464P). The 13900KS's 63990 average is within 1.2% of all of them, underscoring its competitive standing in both consumer and entry-level server segments. The 95th percentile ranking confirms that the processor outperforms the vast majority of CPUs currently available, making it a high-end choice for demanding applications.

Power and Thermals

The TDP is specified at 150 W, which places the i9-13900KS in a high-power envelope for a desktop processor. The combination of a 6.00 GHz boost clock and 24 cores implies substantial power draw under sustained load, although exact power consumption beyond the TDP is not provided. The 10 nm process node and 257 mm² die size suggest a dense integration of cores and cache, which aids in heat dissipation but also concentrates thermal output in a small area. The 150 W TDP class typically requires a robust cooling solution—such as a high-end air cooler or a liquid cooling loop—to maintain peak performance without thermal throttling. The large die size provides a relatively large surface for heat transfer, but the high boost clock and 32 threads mean that thermal management is critical for sustained workloads like rendering or long compilation runs.

Single-Thread vs Multi-Thread Behavior

The i9-13900KS excels in both single-thread and multi-thread scenarios. Its single-core Cinebench R23 score of 7277 and Geekbench single-core of 3125 are near the top of the consumer desktop spectrum, driven by the 6.00 GHz boost clock. In contrast, the multi-thread scores are dramatically higher: R23 multicore 51548, Geekbench multicore 21426, and Passmark multithread 60644. The 3DMark thread-scaling results show a nearly linear increase from 2 to 8 threads, followed by continued growth to 16243 at max threads. This indicates that the processor can feed all 32 threads efficiently, with minimal contention overhead.

For workloads that depend on single-thread performance—such as many games, legacy applications, or lightly threaded productivity tools—the 13900KS delivers top-tier responsiveness. Multi-threaded tasks like video rendering, 3D modeling, scientific simulations, and software compilation benefit from the 24-core, 32-thread design. The balanced scaling suggests that the processor does not suffer from thread scheduling penalties, even at high core counts, making it a versatile choice for mixed workloads.

Who Should Consider It

The benchmark data indicates that the i9-13900KS is well-suited for users who require both high single-thread and high multi-thread performance. The Cinebench R23 multicore score of 51548 and Passmark multithread of 60644 make it a strong candidate for content creation, including video editing, 3D rendering, and large-scale data processing. The single-core score of 7277 in R23 ensures smooth performance in everyday applications and gaming, where high clock speeds often matter more than core count. The integrated UHD Graphics 770 provides a fallback for systems without a discrete GPU, though it is not intended for heavy graphics workloads. The support for ECC memory makes it suitable for workstations where data integrity is critical, such as financial modeling or scientific computing.

The 95th percentile ranking and close competition with EPYC server processors suggest that the 13900KS can handle professional workloads, though it lacks the multi-socket capabilities of true server platforms. For gamers, the 6.00 GHz boost clock and strong single-thread scores translate to excellent frame rates in CPU-bound scenarios. For office and general productivity, the 32 threads provide ample headroom for multitasking, virtualization, and background workloads. The processor is also a viable option for developers and researchers who need to compile large codebases or run complex simulations.

Platform and Compatibility

The i9-13900KS uses Intel Socket 1700, which is compatible with Intel 600 and 700 series chipsets (though the fact pack only specifies the socket). It supports dual-channel DDR4 and DDR5 memory, with a memory bandwidth of 89.6 GB/s. ECC memory is supported, a feature more commonly found on server platforms, adding to its workstation appeal. The PCIe interface is Gen 5 with 20 lanes from the CPU, enabling high-speed storage and graphics connectivity. The integrated graphics is UHD Graphics 770, and the multiplier is unlocked, allowing overclocking. The release date is January 11, 2023, and the part number is SRMBX.

The 20 PCIe Gen 5 lanes allow for a single high-end GPU and multiple NVMe drives, providing ample bandwidth for modern storage and graphics. The dual-channel memory controller supports both DDR4 and DDR5, giving users flexibility in platform cost and performance. The unlocked multiplier is a boon for enthusiasts, though the already high 6.00 GHz boost clock leaves limited headroom for manual overclocking. The socket 1700 platform is well-established, with a wide range of motherboards available, though the fact pack does not specify chipset details.

FAQ

Q: What is the launch MSRP of the Intel Core i9-13900KS?

A: The launch MSRP is $699.

Q: How many cores and threads does the i9-13900KS have?

A: It has 24 cores and 32 threads.

Q: What is the maximum boost clock?

A: The boost clock is 6.00 GHz, with a base clock of 3.20 GHz.

Q: Does the i9-13900KS support ECC memory?

A: Yes, ECC memory is supported.

Q: What memory types are supported?

A: It supports DDR4 and DDR5, with a dual-channel interface and 89.6 GB/s bandwidth.

Q: What is the socket type?

A: Intel Socket 1700.

Q: Does it have integrated graphics?

A: Yes, it includes UHD Graphics 770.