Intel Core i5-13450HX vs Intel Core i9-12900HX Comparison

Head-to-Head Benchmarks

The data is unambiguous: the Intel Core i9-12900HX wins every single head-to-head benchmark recorded in the database. Across 17 comparative tests, the i9 takes all 17 victories. There is no test in the dataset where the Intel Core i5-13450HX comes out ahead.

The largest margin comes in the PassMark find prime numbers test, where the i9-12900HX scores 132 against the i5-13450HX's 83, a 59% advantage. This is a workload that scales heavily with core count and memory subsystem efficiency, and the gap is substantial. The smallest margin is in the PassMark single-thread test, where the i9-12900HX scores 3745 versus 3553 for the i5, a 5.4% lead. That is still a win, but it shows that in lightly threaded, single-core scenarios the two are relatively close.

Multi-core rendering workloads show a consistent and large advantage for the i9. In Cinebench R15 multicore, the i9-12900HX scores 3566 against 2503, a 42.5% lead. In Cinebench R20 multicore, the gap is 11764 versus 8728, a 34.8% difference. Cinebench R23 multicore shows 23150 versus 16797, a 37.8% margin. These are the kinds of results that matter for video rendering, 3D modeling, and other heavily threaded content creation tasks. The i9 is not just slightly ahead; it is firmly in another performance tier.

Single-core Cinebench results also favor the i9, though by smaller margins. In Cinebench R15 single-core, the i9 scores 278 versus 248, a 12.1% lead. In Cinebench R20 single-core, it is 1660 versus 1232, a 34.7% lead. In Cinebench R23 single-core, the i9 scores 1912.5 versus 1746, a 9.5% lead. The R20 single-core result stands out as an outlier compared to the other single-core tests, but the overall pattern is clear: the i9 has the stronger single-threaded performance.

General productivity benchmarks reinforce the same story. PassMark multithread shows the i9 at 33158 versus 25084, a 32.2% lead. PassMark integer math scores 113416 for the i9 versus 83209, a 36.3% difference. Floating-point math is 84410 versus 61776, a 36.6% gap. Data compression is 400636 versus 305990, a 30.9% lead. Data encryption is 22932 versus 16632, a 37.9% advantage. Random string sorting is 43877 versus 31940, a 37.4% lead. Extended instructions show 24315 versus 19083, a 27.4% gap. Even the PassMark physics test, which often behaves differently from other workloads, has the i9 at 2012 versus 1504, a 33.8% lead.

The overall average benchmark scores reflect this. The i9-12900HX has an average benchmark score of 35003, while the i5-13450HX sits at 34333. Both processors land in the 84th percentile when compared against all CPUs in the database, so both are above-average performers. The i9's nearest rivals include the Intel Core i7-13800H with an average score of 34988 and a 0% delta, and the Intel Core i5-14500HX with 35094 and a -0.3% delta. The i5-13450HX's nearest rivals include the AMD Ryzen 7 3700X with 34260 and a 0.2% delta, and the AMD Ryzen AI 7 350 with 34222 and a 0.3% delta.

FAQ

Q: Which CPU wins in multi-core workloads?

A: The Intel Core i9-12900HX wins every multi-core test. In Cinebench R23 multicore, it scores 23150 versus 16797 for the i5-13450HX, a 37.8% lead. PassMark multithread shows 33158 versus 25084, a 32.2% advantage.

Q: Is the i5-13450HX competitive in single-threaded tasks?

A: It is closer but still loses. The i9-12900HX leads by 5.4% in PassMark single-thread (3745 versus 3553) and by 9.5% in Cinebench R23 single-core (1912.5 versus 1746). The i5 is not faster in any recorded single-thread test.

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

A: The largest delta is in PassMark find prime numbers, where the i9-12900HX scores 132 against 83 for the i5-13450HX, a 59% difference. This workload heavily favors the i9's additional cores and threads.

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

A: The i9-12900HX has an average benchmark score of 35003, placing it within 0.3% of the Intel Core i7-13800H and within -0.3% of the Intel Core i5-14500HX. The i5-13450HX averages 34333, placing it within 0.2% of the AMD Ryzen 7 3700X and within 0.3% of the AMD Ryzen AI 7 350.

Q: Do both CPUs support the same memory types?

A: Yes. Both support DDR4 and DDR5 memory in dual-channel configuration. Both also support ECC memory.

Q: Are both CPUs unlocked for overclocking?

A: Yes. The multiplier is unlocked on both the i9-12900HX and the i5-13450HX, according to the database records.

The Verdict

The data points to a clear decision for most buyers. The Intel Core i9-12900HX is the stronger processor in every benchmark category recorded. It wins all 17 head-to-head comparisons, with margins ranging from 5.4% in single-threaded PassMark to 59% in prime number finding. The multi-core rendering gap is consistently above 30%, which matters for anyone running Cinebench-class workloads, video encoding, or 3D rendering.

The i5-13450HX is not a weak chip. It sits in the 84th percentile against all CPUs, matching the i9's percentile ranking. Its average benchmark score of 34333 is respectable, and it trades blows with desktop processors like the AMD Ryzen 7 3700X, which has an average score of 34260. For users whose workloads are moderate and who do not need maximum multi-core throughput, the i5 will handle typical productivity tasks without issue.

However, the i9-12900HX offers a substantial performance uplift across the board. The 37.8% lead in Cinebench R23 multicore and the 36.3% lead in PassMark integer math are not marginal gains. These are differences that translate into noticeably shorter render times and faster compilation or simulation runs. The i9 also holds a 5.4% edge in single-threaded PassMark, so it is not sacrificing single-core responsiveness to achieve its multi-core dominance.

The launch MSRP of the i9-12900HX is $606, while the i5-13450HX has a launch MSRP of $326. The performance gap is consistent with that positioning. The i9 is the top-tier mobile part from the 12th Gen Alder Lake-HX lineup, while the i5 is an upper-midrange 13th Gen Raptor Lake-HX chip. Users who need maximum throughput should choose the i9. Users who prioritize other system components or who have lighter workloads can rely on the i5, but they should not expect it to match the i9 in any measured benchmark.

Specification Differences

The two processors differ in core count, clock speeds, cache size, integrated graphics, die size, and release date. The i9-12900HX has 16 cores and 24 threads, while the i5-13450HX has 10 cores and 16 threads. Base clock is 2.30 GHz on the i9 versus 2.40 GHz on the i5. Boost clock is 5.00 GHz on the i9 versus 4.60 GHz on the i5. The i9 has a 30 MB shared L3 cache, while the i5 has 20 MB. The i9 features UHD Graphics 770, while the i5 features UHD Graphics 710. The i9 has a die size of 215 mm², while the i5 has a die size of 257 mm². The i9 was released on 2022-05-09, and the i5 was released on 2023-01-03.

Both CPUs share the same TDP of 55 watts, the same Intel BGA 1964 socket, the same dual-channel DDR4/DDR5 memory support, ECC memory support, and PCIe Gen 5 with 20 CPU lanes. Both have unlocked multipliers.

Architecture Differences

The i9-12900HX is built on Alder Lake architecture, specifically the Alder Lake-HX codename, part of the Core 12th Gen series. It uses a 10 nm process node from Intel. The i5-13450HX is built on Raptor Lake architecture, specifically the Raptor Lake-HX codename, part of the Core 13th Gen series. It also uses a 10 nm process node from Intel.

L1 cache is identical at 80 KB per core for both. L2 cache differs: the i9 has 1.25 MB per core, while the i5 has 2 MB per core. The i9 compensates with a larger shared L3 cache at 30 MB versus 20 MB. The i9 has 16 cores and 24 threads, which represents the hybrid configuration of performance and efficiency cores typical of Alder Lake-HX. The i5 has 10 cores and 16 threads, a smaller configuration within the same hybrid design philosophy.

Both CPUs support DDR4 and DDR5 memory and have ECC capability. Both use the same PCIe Gen 5 interface with 20 lanes. The i9's integrated graphics is the UHD Graphics 770, while the i5 steps down to the UHD Graphics 710. The i9 has a smaller die at 215 mm² compared to the i5's 257 mm², despite having more cores and a larger L3 cache, which reflects the different core layouts and architectural choices between Alder Lake and Raptor Lake.

Where Each One Wins

The Intel Core i9-12900HX wins in every benchmark category recorded in the database. There is no workload in the dataset where the i5-13450HX takes the lead. The i9's wins span rendering, math operations, encryption, compression, sorting, and single-threaded tasks.

For multi-core rendering and content creation, the i9-12900HX is the clear choice. Cinebench R23 multicore shows a 37.8% lead, and Cinebench R20 multicore shows a 34.8% lead. These workloads benefit directly from the i9's 16 cores and 24 threads. The i9 also leads by 36.3% in integer math and 36.6% in floating-point math, which matters for scientific computing, financial modeling, and simulation software.

For data-heavy tasks, the i9 again dominates. Data compression is 30.9% faster, data encryption is 37.9% faster, and random string sorting is 37.4% faster. These tasks often rely on cache size and memory bandwidth, and the i9's 30 MB of shared L3 cache gives it an advantage over the i5's 20 MB.

For lightly threaded work, the i9 still wins, but the margin narrows. PassMark single-thread shows a 5.4% lead, and Cinebench R23 single-core shows a 9.5% lead. This means the i9 is not just a multi-core monster; it also handles everyday applications and older software with slightly better responsiveness.

The i5-13450HX does not win any recorded benchmark. Its value lies in its lower launch MSRP of $326 and its adequate performance for moderate workloads. It still reaches the 84th percentile against all CPUs, so it is not a slow processor by general standards. Its nearest rivals include the AMD Ryzen 7 3700X, which it edges by 0.2% in average score, and the AMD Ryzen AI 7 350, which it beats by 0.3%. For users building a laptop around a tighter budget, the i5 can handle everyday computing, office work, and lighter creative tasks. But the recorded data shows no scenario where it outperforms the i9-12900HX.