Intel Core i5-13450HX vs Intel Core i7-12700K Comparison

Head-to-Head Benchmarks

The recorded data shows a complete sweep for the Intel Core i7-12700K across all 17 shared benchmark tests, with no wins recorded for the Intel Core i5-13450HX. The margin of victory varies significantly by workload, ranging from a modest 6% advantage in single-core rendering to a commanding 51.4% lead in extended instruction throughput.

Starting with the rendering workloads, the i7-12700K posts a Cinebench R23 multi-core score of 19,784 against 16,797 for the i5-13450HX, a 17.8% advantage. The gap widens substantially in Cinebench R20 multi-core, where the desktop part scores 12,229 versus 8,728, a 40.1% lead. Interestingly, the single-core R20 result shows the exact same 40.1% delta (1,726 vs 1,232), while the R15 single-core test shows a much tighter 9.7% edge (272 vs 248). The R23 single-core test shows the smallest overall margin at 6% (1,850.5 vs 1,746), indicating that the i5-13450HX is relatively competitive in lightly threaded rendering, but falls far behind when all cores are engaged.

The Passmark suite reveals the most lopsided results. The largest delta across all tests is 51.4% in extended instructions (28,885 vs 19,083), followed closely by data compression at 46% (446,595 vs 305,990). Floating point math shows a 42.5% gap (88,035 vs 61,776), while integer math and prime number finding each show 37.3% advantages (114,264 vs 83,209 and 114 vs 83, respectively). Random string sorting shows a 43.4% lead (45,805 vs 31,940), and data encryption posts a 40.7% delta (23,408 vs 16,632). The multi-threaded Passmark score is 34,404 for the i7-12700K versus 25,084 for the i5-13450HX, a 37.2% difference, while the single-thread score shows a 12.9% edge (4,013 vs 3,553). Physics simulation rounds out the list with a 19% advantage (1,790 vs 1,504).

In the broader database context, the i7-12700K has an average benchmark score of 35,287 and sits at the 84th percentile of all CPUs. Its nearest rivals are the Intel Core i5-13600T (35,305, delta -0.1%), the i7-12700KF (35,365, delta -0.2%), the i7-13700T (35,403, delta -0.3%), and the Intel Core 5 213PE (35,428, delta -0.4%). The i5-13450HX averages 34,333, also at the 84th percentile, with nearest rivals including the AMD Ryzen 7 3700X (34,260, delta 0.2%), AMD Ryzen AI 7 350 (34,222, delta 0.3%), AMD EPYC 4244P (34,220, delta 0.3%), and Intel Core Ultra 5 336H (34,485, delta -0.4%). Despite identical percentile rankings, the i7-12700K holds a 2.8% advantage in average score over the i5-13450HX.

Where Each One Wins

The data offers no ambiguity: the i7-12700K wins every single benchmark category. There is no workload in the shared test set where the i5-13450HX comes out ahead. That said, the magnitude of the losses varies, which matters for use-case planning.

For multi-threaded productivity, the i7-12700K is decisively stronger. The Cinebench R20 multi-core delta of 40.1% and the Passmark multi-thread delta of 37.2% indicate that heavily parallel workloads such as video encoding, 3D rendering, and scientific computation will see substantial performance benefits on the desktop chip. The data compression advantage of 46% further reinforces this for archive management and database workloads. Similarly, the 42.5% lead in floating point math suggests strong performance in simulation and numerical analysis.

For lightly threaded tasks, the gap narrows considerably. The Cinebench R23 single-core delta is just 6%, and the R15 single-core delta is 9.7%. The Passmark single-thread score shows a 12.9% edge. This means that for everyday applications, web browsing, and office productivity, the two processors are much closer in feel, though the i7-12700K still holds the lead in every measured metric.

The i5-13450HX does have attributes that shift the practical calculus, even if they do not appear in benchmark scores. It supports ECC memory, which the i7-12700K does not, and it uses PCIe Gen 5 with 20 lanes, versus Gen 4 with 20 lanes on the desktop part. The mobile chip also has a significantly lower TDP at 55 watts against 125 watts, which matters for system-level power budgets in laptops, though this metric does not directly translate to benchmark performance.

The Verdict

Based strictly on the recorded measurements, the Intel Core i7-12700K is the superior processor in every performance category tested. If the selection criterion is raw compute throughput, the database shows no reason to choose the i5-13450HX. The desktop part leads by 17.8% to 40.1% across Cinebench multi-core tests, by 37.2% to 46% across Passmark multi-thread workloads, and by 6% to 12.9% in single-thread tests.

The i5-13450HX is not without rationale, but the reasons are not performance related. It is a mobile processor with a 55 watt TDP, suited for laptop integration, whereas the i7-12700K is a desktop part with a 125 watt TDP for socket 1700. The mobile chip supports ECC memory, a feature absent from the i7-12700K, and it offers PCIe Gen 5 connectivity versus Gen 4 on the desktop part. Buyers who need ECC or PCIe Gen 5 in a mobile form factor would select the i5-13450HX despite its lower benchmark scores. Buyers who prioritize compute performance above all else, and who can accommodate a desktop platform, should choose the i7-12700K.

The percentile rankings are identical at 84, but the average benchmark scores tell the fuller story: 35,287 versus 34,333, a 2.8% overall advantage for the i7-12700K. In head-to-head terms, the i7-12700K wins 17 tests and loses none. The verdict is unambiguous from a performance standpoint.

FAQ

Q: Which processor has the higher multi-core performance?

A: The Intel Core i7-12700K wins every multi-core test. It leads by 17.8% in Cinebench R23 multi-core (19,784 vs 16,797), by 40.1% in R20 multi-core (12,229 vs 8,728), and by 37.2% in Passmark multi-thread (34,404 vs 25,084).

Q: How close are they in single-thread performance?

A: The i7-12700K wins all single-thread tests, but the margins are much smaller. The smallest gap is 6% in Cinebench R23 single-core (1,850.5 vs 1,746), while the Passmark single-thread score shows a 12.9% edge (4,013 vs 3,553).

Q: Which processor has more cores and threads?

A: The i7-12700K has 12 cores and 20 threads, while the i5-13450HX has 10 cores and 16 threads. The desktop part also has a larger L3 cache at 25 MB shared versus 20 MB shared, though the i5-13450HX has a larger L2 cache per core at 2 MB versus 1.25 MB.

Q: What are the maximum clock speeds?

A: The i7-12700K boosts up to 5.00 GHz with a base clock of 3.60 GHz. The i5-13450HX boosts up to 4.60 GHz with a base clock of 2.40 GHz.

Q: Do these processors support the same memory types?

A: Both support DDR4 and DDR5 memory in dual-channel configuration. However, the i5-13450HX supports ECC memory, while the i7-12700K does not.

Q: How do these processors rank against all other CPUs in the database?

A: Both sit at the 84th percentile of all CPUs. The i7-12700K has an average benchmark score of 35,287, while the i5-13450HX averages 34,333. The i7-12700K's nearest rival is the Intel Core i5-13600T, with a delta of -0.1%, while the i5-13450HX's nearest rival is the AMD Ryzen 7 3700X, with a delta of 0.2%.

Architecture Differences

The two processors represent different generations and platform segments. The i7-12700K is a 12th Gen Core part built on Alder Lake architecture (Alder Lake-S codename), while the i5-13450HX is a 13th Gen Core part using Raptor Lake architecture (Raptor Lake-HX codename). Both are manufactured by Intel on a 10 nm process, but the die sizes differ: the i7-12700K measures 215 mm², while the i5-13450HX measures 257 mm².

The core configurations differ notably. The i7-12700K provides 12 cores and 20 threads, while the i5-13450HX provides 10 cores and 16 threads. Both use an 80 KB L1 cache per core, but the L2 cache differs: 1.25 MB per core on the desktop part versus 2 MB per core on the mobile part. The shared L3 cache is larger on the i7-12700K at 25 MB, compared to 20 MB on the i5-13450HX.

Platform support diverges significantly. The i7-12700K uses Intel Socket 1700 and is a desktop part with a 125 watt TDP. The i5-13450HX uses Intel BGA 1964 and is a mobile part with a 55 watt TDP. The desktop chip offers PCIe Gen 4 with 20 CPU lanes, while the mobile chip offers PCIe Gen 5 with 20 CPU lanes. Both are socketed differently and are not interchangeable.

Integrated graphics differ as well. The i7-12700K includes UHD Graphics 770, while the i5-13450HX includes UHD Graphics 710. The i7-12700K has an unlocked multiplier, as does the i5-13450HX, though the latter is a mobile part. Memory support is similar, with both supporting DDR4 and DDR5 in dual-channel mode, but ECC memory is only supported on the i5-13450HX.

The release dates are roughly 14 months apart, with the i7-12700K launching on November 3, 2021, and the i5-13450HX launching on January 3, 2023. Both are currently marked as active in production. The i7-12700K carries the part number SRL4N, while the i5-13450HX uses SRME8SRMEE. The launch MSRP for the i7-12700K is $409, and the launch MSRP for the i5-13450HX is $326, though pricing is not a factor in the performance analysis.