Intel Core i9-13900 vs Intel Core i9-13900KF Comparison

The Intel Core i9-13900KF and Intel Core i9-13900 share the same underlying Raptor Lake architecture, but the benchmark data shows they are far from equal in performance. The 13900KF wins all 19 head-to-head comparisons, with a decisive lead in nearly every workload category. The 13900KF is the clear performance king, while the 13900 offers a lower-power alternative with integrated graphics, but the data leaves no ambiguity about which chip is faster.

Where Each One Wins

The head-to-head benchmark results are one-sided: the Intel Core i9-13900KF wins 19 out of 19 tests, with the Intel Core i9-13900 recording zero wins. This is not a close contest. The 13900KF’s largest advantage comes in PassMark extended instructions, where it leads by 40.7%, scoring 46,084 against the 13900’s 32,760. This suggests a significant edge in workloads that leverage advanced instruction sets, such as AVX-512 or similar extensions, which could benefit scientific computing and media encoding.

The 13900KF also dominates in data-intensive tasks. In PassMark data compression, it scores 786,218 versus 577,285, a 36.2% advantage. Random string sorting follows closely at 34.3% (86,510 vs 64,396), and data encryption shows a 31.1% lead (46,186 vs 35,242). These results indicate that the 13900KF is substantially better suited for database workloads, file archiving, and encryption-heavy applications.

For multi-threaded performance, the 13900KF is consistently about 28.8% ahead across Cinebench R15, R20, and R23 multi-core tests. In Cinebench R23 multi-core, it scores 48,855 against the 13900’s 37,931. PassMark multi-thread tells a similar story: 57,729 vs 45,680, a 26.4% delta. The 13900KF also leads in floating-point math (25.2%), integer math (17.5%), and physics (19%). The only areas where the gap narrows are single-threaded tests: Geekbench single-core shows just a 2.5% lead (2,668 vs 2,604), and PassMark single-thread is 6.4% ahead (4,584 vs 4,309). This means the 13900KF’s advantage grows with thread count, making it the pick for rendering, compilation, and simulation workloads. The 13900 has no benchmark category where it comes out ahead, so there is no use-case where the data supports choosing it for performance reasons.

Architecture Differences

Both processors are built on Raptor Lake-S architecture, using a 10 nm process from Intel with a die size of 257 mm². They share identical core configurations: 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. The memory support is also identical: DDR4 and DDR5, dual-channel, with ECC support on both.

The critical differences lie in clock speeds, power, and features. The 13900KF has a base clock of 3.00 GHz and a boost clock of 5.80 GHz, while the 13900 runs at a much lower base clock of 2000.00 MHz (2.00 GHz) and boosts to 5.60 GHz. The 13900KF also has a thermal design power (TDP) of 125 W, versus the 13900’s 65 W, explaining the performance gap. The 13900KF has an unlocked multiplier, allowing overclocking, while the 13900’s multiplier is locked.

PCIe lane count differs: the 13900KF provides Gen 5 with 20 lanes (CPU only), while the 13900 offers Gen 5 with 16 lanes. The most notable feature difference is integrated graphics: the 13900 includes UHD Graphics 770, while the 13900KF has no integrated graphics (null in the data). This means the 13900KF requires a discrete GPU for display output, whereas the 13900 can run without one. The 13900KF was released on 2022-09-26, while the 13900 came later on 2023-01-03. Both are active production parts, but the 13900KF carries part number SRMBJ, and the 13900 is SRMB6.

FAQ

Q: Which processor is faster in multi-core workloads?

A: The Intel Core i9-13900KF is consistently about 28.8% faster in Cinebench R20 and R23 multi-core tests. For example, Cinebench R23 multi-core scores are 48,855 for the 13900KF versus 37,931 for the 13900.

Q: Does the Intel Core i9-13900 have integrated graphics?

A: Yes, the 13900 includes UHD Graphics 770. The 13900KF has no integrated graphics, so it requires a discrete GPU for any display output.

Q: Can I overclock both processors?

A: No. The 13900KF has an unlocked multiplier, enabling overclocking. The 13900 has a locked multiplier, so its clock speeds cannot be adjusted beyond factory settings.

Q: What is the difference in power consumption?

A: The 13900KF has a TDP of 125 W, while the 13900 has a TDP of 65 W. This lower power draw for the 13900 likely explains its reduced performance in benchmark results.

Q: How much faster is the 13900KF in single-threaded tests?

A: The single-threaded advantage is modest. In Geekbench single-core, the 13900KF scores 2,668 versus 2,604 for the 13900, a 2.5% lead. PassMark single-thread shows a 6.4% gap (4,584 vs 4,309).

Q: Which CPU has more PCIe lanes?

A: The 13900KF provides Gen 5 with 20 lanes (CPU only), while the 13900 offers Gen 5 with 16 lanes. This gives the 13900KF more bandwidth for expansion cards.

Specification Differences

The two processors share 24 cores, 32 threads, 10 nm process, 257 mm² die size, and the same cache layout (80 KB L1 per core, 2 MB L2 per core, 36 MB shared L3). Both support DDR4 and DDR5 memory with dual-channel and ECC. The key specification differences are:

• Base Clock: 3.00 GHz (13900KF) vs 2000.00 MHz (13900)
• Boost Clock: 5.80 GHz (13900KF) vs 5.60 GHz (13900)
• TDP: 125 W (13900KF) vs 65 W (13900)
• PCIe: Gen 5, 20 Lanes (13900KF) vs Gen 5, 16 Lanes (13900)
• Integrated Graphics: None (13900KF) vs UHD Graphics 770 (13900)
• Multiplier: Unlocked (13900KF) vs Locked (13900)
• Release Date: 2022-09-26 (13900KF) vs 2023-01-03 (13900)
• Part Number: SRMBJ (13900KF) vs SRMB6 (13900)

Head-to-Head Benchmarks

The 13900KF’s dominance is most pronounced in Cinebench multi-core tests, where it holds a uniform 28.8% advantage across R15, R20, and R23. For instance, Cinebench R20 multi-core scores are 20,519 for the 13900KF versus 15,931 for the 13900, and Cinebench R23 multi-core is 48,855 vs 37,931. Single-core Cinebench results show a similar 28.8% delta, with the 13900KF scoring 695 in R15 single-core versus 539 for the 13900.

PassMark tests reveal where the architectures diverge most. The largest single-test gap is in extended instructions: 46,084 vs 32,760, a 40.7% lead for the 13900KF. Data compression follows at 36.2% (786,218 vs 577,285), and random string sorting at 34.3% (86,510 vs 64,396). Encryption is 31.1% faster (46,186 vs 35,242). These are substantial margins that would translate into noticeably shorter completion times for batch processing tasks.

The multi-threaded PassMark score is 57,729 for the 13900KF versus 45,680 for the 13900, a 26.4% gap. Floating-point math shows a 25.2% lead (150,869 vs 120,492), and integer math is 17.5% ahead (206,859 vs 176,107). Physics tests show a 19% advantage (2,956 vs 2,484), and find prime numbers is 21% faster (225 vs 186).

The narrowest margins appear in Geekbench and PassMark single-threaded tests. Geekbench multi-core shows a 6.2% lead (22,486 vs 21,164), while Geekbench single-core is just 2.5% (2,668 vs 2,604). PassMark single-thread and single-threaded tests both show a 6.4% gap (4,584 vs 4,309). This pattern indicates that the 13900KF’s higher boost clock (5.80 GHz vs 5.60 GHz) provides a modest single-thread edge, but the core count and cache are identical, so the multi-thread advantage likely stems from the higher sustained clock and power envelope.

The Verdict

The data is unambiguous: the Intel Core i9-13900KF is the faster processor in every measured benchmark, winning all 19 head-to-head comparisons. The 13900KF’s average benchmark score of 61,841 places it in the 93rd percentile of all CPUs, while the 13900’s average of 60,676 sits at the 92nd percentile. The 13900KF also ranks higher among its nearest rivals, with a 0.1% lead over the Intel Core i9-13900K, whereas the 13900 trails the Intel Core i9-14900F by 1.1%.

For users who need maximum multi-threaded performance — content creation, 3D rendering, software compilation — the 13900KF is the clear choice. Its 28.8% lead in Cinebench multi-core and 26.4% lead in PassMark multi-thread are decisive. The 40.7% advantage in extended instructions makes it particularly suited for scientific and engineering workloads. The unlocked multiplier also allows further overclocking, though the data does not quantify potential gains.

The 13900’s only advantages are qualitative: a 65 W TDP versus 125 W, meaning lower power consumption and heat output, and integrated UHD Graphics 770, which eliminates the need for a discrete GPU in basic systems. It also carries a launch MSRP of $549 compared to $564 for the 13900KF. However, the 13900’s lower base clock of 2.00 GHz versus 3.00 GHz and lower boost of 5.60 GHz versus 5.80 GHz directly explain its performance deficit.

The recommendation is straightforward. If the workload is multi-threaded and performance is the priority, the 13900KF wins outright, with no benchmark category where the 13900 is superior. If the system must run without a discrete GPU or power efficiency is paramount, the 13900 is the functional choice, but the data shows it sacrifices roughly 20-30% performance in most heavy tasks to achieve that.