Intel Core i7-13700K vs Intel Core i9-13900HX Comparison

The Intel Core i7-13700K and Intel Core i9-13900HX are both Raptor Lake parts, but they target fundamentally different platforms: a desktop socket versus a mobile BGA package. While the i9-13900HX carries a higher core count and a larger L3 cache, the benchmark data tells a story of desktop dominance. Across the 23 head-to-head benchmark comparisons, the i7-13700K wins 22, with the i9-13900HX managing a single victory. The average benchmark score for the i7-13700K is 46,881, placing it in the 89th percentile of all CPUs, while the i9-13900HX scores an average of 46,098, also in the 89th percentile. This makes for a tight overall race, but the distribution of wins reveals significant differences in specific workloads.

Head-to-Head Benchmarks

The i7-13700K’s most commanding victories come in threaded and synthetic workloads. In 3DMark’s 16-thread test, the i7-13700K scores 10,717 against the i9-13900HX’s 8,929, a 20% advantage. The 8-thread test shows a similar gap, with the i7-13700K scoring 8,193 versus 6,857, a 19.5% lead. Even in the max-threads test, which should favor the i9-13900HX’s additional cores, the i7-13700K wins 12,412 to 11,738, a 5.7% margin. The desktop chip’s advantage extends to 4-thread and 2-thread tests, where it leads by 11.4% and 5.6%, respectively. The single-thread 3DMark test is closer, with the i7-13700K ahead by just 3.1% (1,136 vs 1,102).

Cinebench results reinforce the pattern. In Cinebench R23 multi-core, the i7-13700K scores 30,745 against the i9-13900HX’s 27,900, a 10.2% win. The Cinebench R20 multi-core test shows a 9.8% lead (16,292 vs 14,836), and R15 multi-core is nearly a tie, with the i7-13700K scoring 4,507.5 versus 4,494.5, a mere 0.3% difference. Single-core Cinebench results also favor the i7-13700K: R20 shows a 9.8% lead (2,299 vs 2,094), R23 a 2.9% lead (2,116 vs 2,056), and R15 a 2.4% lead (303 vs 296).

PassMark tests show the i7-13700K’s strength in data compression, scoring 595,292 versus 531,224, a 12.1% advantage. Extended instructions also favor the desktop part heavily, with a 19.9% lead (36,625 vs 30,550). Floating-point math, multithread, and random string sorting all go to the i7-13700K by margins of 4%, 6.6%, and 5.9%, respectively. Data encryption is closer, with the i7-13700K winning by 3.5% (33,249 vs 32,130). The i9-13900HX’s sole win comes in PassMark integer math, where it scores 156,175 against the i7-13700K’s 154,446, a 1.1% margin. The i7-13700K also edges out the i9-13900HX in single-thread PassMark by 6.2% (4,333 vs 4,081).

The Verdict

The data clearly favors the Intel Core i7-13700K for users prioritizing raw compute performance in desktop-centric workloads. Its wins span every major benchmark category, from Cinebench multi-core to PassMark data compression. The 20% lead in 3DMark 16-thread and the 19.9% lead in extended instructions are particularly decisive for productivity and content creation tasks. The i9-13900HX’s only victory, a 1.1% edge in PassMark integer math, is too narrow to offset the i7-13700K’s broad superiority.

However, context matters. The i9-13900HX is a mobile processor designed for laptops, not desktops. Its 55W TDP versus the i7-13700K’s 125W TDP suggests a power efficiency trade-off, though the data does not quantify power draw. For a mobile user who needs multi-threaded performance in a laptop chassis, the i9-13900HX’s 24 cores and 32 threads provide a compelling option, especially given its 36 MB of shared L3 cache. But for a desktop builder, the i7-13700K offers better benchmark scores across the board, with a launch MSRP of $409. The i9-13900HX carries a launch MSRP of $668, yet it loses to a cheaper desktop part in nearly every test.

The percentile rankings are identical at 89, indicating both CPUs sit in the same performance tier globally. The nearest rivals for the i7-13700K include the AMD Ryzen 9 5900 (average score 46,971, delta -0.2%) and the AMD Ryzen AI 9 HX PRO 375 (average score 47,022, delta -0.3%), showing it trades blows with high-end AMD parts. The i9-13900HX’s nearest rivals include the Intel Core Ultra 5 235 (average score 46,062, delta 0.1%) and the AMD Ryzen AI 9 HX 375 (average score 46,030, delta 0.1%), placing it in a slightly lower competitive bracket.

Architecture Differences

Both processors share the Raptor Lake architecture, but they come from different variants. The i7-13700K is based on Raptor Lake-S, while the i9-13900HX uses Raptor Lake-HX. Both are built on Intel’s 10 nm process node and feature a die size of 257 mm². The core configurations differ significantly: the i7-13700K has 16 cores and 24 threads, while the i9-13900HX has 24 cores and 32 threads. This gives the mobile chip a 50% core count advantage, yet it fails to translate into benchmark wins.

The L3 cache also differs: the i7-13700K has 30 MB shared, while the i9-13900HX has 36 MB shared. L1 and L2 caches are identical at 80 KB per core and 2 MB per core, respectively. Both CPUs support DDR4 and DDR5 memory in dual-channel mode, and both feature ECC memory support. The integrated graphics are the same UHD Graphics 770, and both support PCIe Gen 5 with 20 CPU lanes.

The base clock differs dramatically: the i7-13700K runs at 3.40 GHz, while the i9-13900HX sits at 2.20 GHz. Boost clocks are identical at 5.40 GHz. The i7-13700K has a TDP of 125W, while the i9-13900HX is rated at 55W, reflecting its mobile design. Both chips have unlocked multipliers, but the i7-13700K uses Intel Socket 1700, while the i9-13900HX uses Intel BGA 1964, meaning the latter is soldered to the motherboard.

Specification Differences

The two CPUs diverge on several key specification fields. The i7-13700K offers 16 cores and 24 threads, whereas the i9-13900HX offers 24 cores and 32 threads. The base clock is 3.40 GHz on the desktop part versus 2.20 GHz on the mobile part. TDP is a major differentiator: 125W for the i7-13700K and 55W for the i9-13900HX. The L3 cache is 30 MB on the i7-13700K and 36 MB on the i9-13900HX.

The market segments differ, with the i7-13700K classified as Desktop and the i9-13900HX as Mobile. The sockets are incompatible: Intel Socket 1700 versus Intel BGA 1964. The release dates also differ, with the i7-13700K launching on 2022-09-26 and the i9-13900HX on 2023-01-03. The part numbers are SRMB8 for the i7-13700K and SRMEC for the i9-13900HX. The launch MSRP differs as well, at $409 for the i7-13700K and $668 for the i9-13900HX. The generation strings also differ: "Core i7 (Raptor Lake)" versus "Core i9 (Raptor Lake-HX)".

FAQ

Q: Which CPU has more cores?

A: The Intel Core i9-13900HX has 24 cores and 32 threads, compared to the Intel Core i7-13700K’s 16 cores and 24 threads.

Q: What is the biggest performance gap between the two?

A: The largest delta is in 3DMark 16-thread, where the i7-13700K scores 10,717 versus the i9-13900HX’s 8,929, a 20% advantage.

Q: Did the i9-13900HX win any benchmark?

A: Yes, it won PassMark integer math, scoring 156,175 against the i7-13700K’s 154,446, a 1.1% margin.

Q: What are their average benchmark scores?

A: The i7-13700K has an average benchmark score of 46,881, while the i9-13900HX averages 46,098. Both are in the 89th percentile of all CPUs.

Q: Do they support the same memory types?

A: Yes, both support DDR4 and DDR5 memory in dual-channel mode, and both support ECC memory.

Q: What is the TDP difference?

A: The i7-13700K has a TDP of 125W, while the i9-13900HX has a TDP of 55W.