Intel Core i9-14900KF vs Intel Core i9-14900KS Comparison

The Verdict

The data is unambiguous: the Intel Core i9-14900KS is the faster processor in 18 of 19 head-to-head benchmark comparisons, with the 14900KF taking a single narrow victory. The KS posts an average benchmark score of 81127 against the KF's 79371, a gap that places the KS in the 96th percentile of all CPUs while the KF sits at the 95th. If the priority is maximum performance in threaded workloads, the 14900KS is the clear choice. However, the 14900KF is no slouch — it trails by only 3.3% in Cinebench R23 multi-core (49370 vs 50995) and actually wins Geekbench single-core by 1.3% (2727 vs 2692). The KS costs more at launch MSRP of $689 versus $564 for the KF, and it lacks integrated graphics on the KF side entirely. The verdict: pick the KS for absolute top-end performance, especially in physics and prime-number workloads where it leads by 7% and 5.6% respectively. Pick the KF if the 3.3% multi-core deficit is acceptable and the Geekbench single-core edge matters more, or if the absence of iGPU is not a concern. The KF also has a lower TDP of 125W versus 150W for the KS, which may influence cooling and power-delivery decisions.

FAQ

Q: Which CPU wins in multi-core workloads?

A: The i9-14900KS wins every multi-core test in the data. In Cinebench R23 multi-core, it scores 50995 versus 49370 for the KF, a 3.3% advantage. PassMark multi-thread shows 60012 versus 58405, also a 2.8% lead for the KS.

Q: Is there any test where the 14900KF beats the 14900KS?

A: Yes, exactly one. In Geekbench single-core, the KF scores 2727 against the KS's 2692, a 1.3% margin. This is the only benchmark among the 19 head-to-head comparisons where the KF wins.

Q: Do both CPUs have the same number of cores and threads?

A: Yes. Both have 24 cores and 32 threads, with identical L1 cache of 80 KB per core, L2 cache of 2 MB per core, and L3 cache of 36 MB shared. They also share the same 10nm process node, 257 mm² die size, and Intel Socket 1700.

Q: What is the main clock-speed difference between them?

A: The base clock is identical at 3.20 GHz for both. The boost clock differs: the KS reaches 6.20 GHz while the KF tops out at 6.00 GHz. This 0.20 GHz difference likely explains most of the KS's benchmark wins.

Q: Does the 14900KS include integrated graphics?

A: Yes, the KS has UHD Graphics 770. The KF has no integrated graphics (null in the data). This is a key feature difference for users who may need iGPU for troubleshooting or media encoding without a discrete GPU.

Q: How do these CPUs compare to their nearest rivals?

A: The KS's nearest rival is the Intel Xeon w5-3535X with an average score of 81115, a 0% delta. The KF's nearest rival is the Intel Core Ultra 9 290HX Plus with a score of 79574, a -0.3% delta against the KF. The KF also sits 0.3% ahead of the Intel Core i9-14900K (79097).

Architecture Differences

Both processors are built on the same Raptor Lake architecture with the Raptor Lake-R codename, part of the Core 14th Gen series. The process node is identical at 10nm, produced by Intel. The die size matches at 257 mm², and both use the Intel Socket 1700. The core configuration is the same: 24 cores and 32 threads, with the same cache hierarchy of 80 KB L1 per core, 2 MB L2 per core, and 36 MB shared L3. Memory support is identical — DDR4 and DDR5 with dual-channel bus, and both support ECC memory. PCIe connectivity is also the same: Gen 5 with 16 lanes from the CPU only.

The critical architectural feature that differs is the integrated graphics. The KS includes UHD Graphics 770, while the KF has no integrated graphics at all. This is the only architectural feature that differs between the two, aside from the boost clock ceiling. The KS's 6.20 GHz boost versus the KF's 6.00 GHz represents a higher binning of the same silicon, which is consistent with the KS's "Special" (KS) designation. Both chips have unlocked multipliers, so overclocking potential exists for both, but the KS starts from a higher stock boost.

The market segment is desktop for both, and both are currently in active production. The release dates differ — the KF launched on 2023-10-16 and the KS on 2024-03-13 — suggesting the KS is a later, more selectively binned variant. The part numbers differ (SRN7R for KS, SRN49 for KF), which confirms they are distinct SKUs despite sharing the same underlying architecture.

Specification Differences

The specifications that differ between the two are limited to five fields: boost clock, TDP, integrated graphics, release date, and launch MSRP. The boost clock is 6.20 GHz for the KS versus 6.00 GHz for the KF. TDP is 150W for the KS and 125W for the KF. The KS has UHD Graphics 770; the KF has none. The release date is 2024-03-13 for the KS and 2023-10-16 for the KF. The launch MSRP is $689 for the KS and $564 for the KF.

All other specifications match exactly: base clock of 3.20 GHz, 24 cores, 32 threads, 10nm process, 257 mm² die size, same cache sizes, DDR4/DDR5 support, dual-channel memory bus, ECC support, Gen 5 PCIe with 16 lanes, Intel Socket 1700, unlocked multiplier, desktop segment, and active production status. The architecture, codename, generation, foundry, and manufacturer are identical for both.

Head-to-Head Benchmarks

The benchmark data shows a consistent pattern: the KS wins nearly everything, but the margin varies significantly by workload. In Cinebench R15, R20, and R23, the KS leads by exactly 3.3% in both single-core and multi-core tests across all three versions. For example, Cinebench R23 multi-core scores 50995 for the KS versus 49370 for the KF, while single-core shows 7199 versus 6969. This uniformity suggests the 0.20 GHz boost advantage translates directly into a fixed 3.3% performance gain in these heavily clock-sensitive tests.

The Geekbench results break the pattern. The KS wins multi-core by a slim 0.6% (23931 versus 23789), but the KF wins single-core by 1.3% (2727 versus 2692). This is the only test where the KF comes out ahead, and it is notably the margin is small. The PassMark suite shows a range of outcomes. The largest KS win is in physics, where it scores 3381 versus 3159, a 7% advantage. Prime number finding also favors the KS heavily: 244 versus 231, a 5.6% lead. Random string sorting goes to the KS by 3.7% (89789 versus 86564). Data encryption and multi-thread tests both show 2.8% leads for the KS (47717 versus 46416, and 60012 versus 58405, respectively). Single-thread PassMark also shows 2.8% (4815 versus 4685). Data compression has a 2.2% KS edge (803368 versus 785831). Integer math favors the KS by 1.7% (212644 versus 209125), while extended instructions show a 1.5% gap (45524 versus 44839). Floating-point math is the closest among the PassMark tests at 1.4% (153975 versus 151918).

The overall win count is 18-1 in favor of the KS. The average benchmark score difference is 81127 versus 79371, which translates to roughly a 2.2% aggregate advantage for the KS. The KF's sole victory in Geekbench single-core is the only data point that breaks the trend, and it is a narrow one.

Where Each One Wins

The 14900KS wins across the vast majority of workloads, making it the default choice for anyone seeking maximum performance. Its biggest advantages are in physics simulations (7% ahead) and prime number calculations (5.6% ahead), which are typically core-count and clock-speed sensitive tasks. For 3D rendering, video encoding, and general multi-threaded productivity, the KS holds a consistent 3.3% edge in Cinebench tests. Data compression and encryption workloads also favor the KS by 2.2% and 2.8% respectively. If you are running heavily threaded applications that push all 24 cores and 32 threads, the KS will deliver measurably higher throughput.

The 14900KF's single win is in Geekbench single-core, where it beats the KS by 1.3%. This is a narrow margin, but it may matter for applications that are strictly single-threaded and do not scale with core count. The KF also has a lower TDP of 125W versus 150W, which could be an advantage in systems with limited cooling capacity or power delivery. The KF's launch MSRP of $564 is lower than the KS's $689, which may factor into system build decisions — though the performance gap is also present. The KF's lack of integrated graphics means it requires a discrete GPU for any display output, which is a non-issue for gaming or workstation builds with dedicated graphics but a consideration for headless servers or troubleshooting scenarios.

In practical terms, the data suggests the KS is the pick for users who want the fastest possible multi-threaded performance and can accommodate its higher TDP. The KF is the pick for users who prioritize the single-core Geekbench result, need lower power draw, or want to save on the lower launch MSRP while accepting a 3.3% multi-core deficit. Both are excellent processors in the 95th and 96th percentiles of all CPUs, but the KS is definitively the performance leader in 18 of 19 benchmarks.