Intel Core i7-1280P vs Intel Core i9-12900HK Comparison

The Intel Core i7-1280P and Intel Core i9-12900HK share a core count, thread count, and architecture, yet the benchmark data places them in different performance tiers. Both processors achieve an average benchmark score of 26469, placing them at the 78th percentile among all CPUs, with a 0% delta between them in the aggregate. This headline parity, however, masks a sweeping 17-0 victory for the i9-12900HK across every individual head-to-head benchmark recorded, with margins ranging from a negligible 1.3% to a dominant 36.2%. The data tells a story of two chips with identical theoretical foundations but vastly different realized performance envelopes.

Head-to-Head Benchmarks

The most dramatic separation occurs in multi-threaded workloads, where the i9-12900HK’s higher power allocation translates directly into substantial leads. In Cinebench R23 multi-core, the i9 scores 18288 against the i7-1280P’s 11666, a 36.2% advantage—the largest delta in the entire comparison. This pattern repeats across older Cinebench versions: the R20 multi-core test shows the i9 leading 8958 to 7153 (20.1% ahead), and R15 multi-core shows 2786 versus 2112 (24.2% ahead). These results indicate that sustained multi-threaded rendering is the i9's home turf, where its extra thermal headroom yields disproportionately large gains.

Single-core performance tells a much closer story. The i9-12900HK wins every single-threaded test, but by slender margins. In Cinebench R23 single-core, the scores are 1673 versus 1651, a mere 1.3% difference. Cinebench R15 single-core shows 242 against 238 (1.7% ahead), and PassMark single-thread shows 3567 versus 3316 (7% ahead). The i9’s higher 5.00 GHz boost clock, compared to the i7’s 4.80 GHz, provides a real but modest edge in lightly-threaded tasks. The data suggests that for everyday responsiveness, users would be hard-pressed to notice the difference, as the 1.3% margin in R23 is within typical run-to-run variance.

The PassMark suite reveals consistent, mid-range victories for the i9 across a variety of workloads. Data compression shows the i9 at 294908 versus 220621 for the i7, a 25.2% lead. Integer math scores are closer: 89527 versus 75485 (15.7% ahead), and floating-point math shows 63572 versus 51355 (19.2% ahead). Encryption tasks give the i9 a 24.5% edge at 17445 versus 13179. Random string sorting, a memory-latency-sensitive test, favors the i9 by 26.3% (32983 versus 24308). Extended instruction set performance shows a 26.7% delta (17583 versus 12897). These figures paint a picture of the i9 delivering roughly 15-27% more throughput in compute-heavy, multi-threaded PassMark subtests.

Two benchmarks deserve special attention for their smaller deltas. PassMark find prime numbers shows the i9 at 102 versus the i7’s 86, a 15.7% difference, mirroring the integer math result. PassMark physics scores 1673 for the i9 and 1411 for the i7, also a 15.7% gap. Notably, the i9’s physics score of 1673 exactly matches its Cinebench R15 single-core score, an interesting coincidence in the data. There are no wins for the i7-1280P in any recorded test; the closest it comes is the 1.3% deficit in Cinebench R23 single-core, where its 1651 score trails the i9’s 1673.

FAQ

Q: How much faster is the Intel Core i9-12900HK in multi-core Cinebench R23?

A: The i9-12900HK scores 18288 compared to the i7-1280P’s 11666, making it 36.2% faster in this test. This is the largest performance gap observed between the two processors.

Q: Is the single-core performance difference significant?

A: No. The i9 leads by only 1.3% in Cinebench R23 single-core (1673 versus 1651) and by 1.7% in Cinebench R15 single-core (242 versus 238). The PassMark single-thread test shows a slightly larger 7% gap (3567 versus 3316).

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

A: Yes, both the Intel Core i7-1280P and Intel Core i9-12900HK feature 14 cores and 20 threads. They also share the same 24 MB of shared L3 cache and 80 KB L1 cache per core.

Q: What is the difference in their average benchmark scores?

A: There is no difference. Both processors have an identical average benchmark score of 26469 and both sit at the 78th percentile among all CPUs. Their nearest rivals include the AMD Ryzen 5 8640U at 26462 (0% delta) and AMD Ryzen 7 7435HS at 26402 (0.3% delta).

Q: Which processor has a higher boost clock?

A: The Intel Core i9-12900HK has a boost clock of 5.00 GHz, while the Intel Core i7-1280P has a boost clock of 4.80 GHz. The i9 also has a higher base clock of 2.50 GHz versus 1.80 GHz for the i7.

Q: Are there any tests where the i7-1280P wins?

A: No. In the entire head-to-head benchmark set, the i9-12900HK wins all 17 recorded tests. The i7-1280P’s closest result is a 1.3% deficit in Cinebench R23 single-core.

Architecture Differences

Despite their different performance profiles, both processors share the same fundamental Alder Lake architecture on Intel’s 10 nm process node. The codenames differ—Alder Lake-P for the i7-1280P and Alder Lake-H for the i9-12900HK—but the core design is identical. Both chips feature 14 cores and 20 threads, indicating the same hybrid configuration of performance and efficiency cores. The die size is exactly 217 mm² for both, and both are fabricated by Intel on the 10 nm node.

The cache hierarchy is also identical. Each core has 80 KB of L1 cache and 1.25 MB of L2 cache, while the L3 cache is 24 MB shared across all cores. Neither processor supports ECC memory. Both integrate the same Iris Xe 96EU graphics solution. The memory controller supports DDR4 and DDR5 in a dual-channel configuration for both chips. PCIe connectivity is identical as well: Gen 4 with 20 lanes from the CPU.

One notable difference in features is the multiplier unlock. The i9-12900HK has an unlocked multiplier, allowing for overclocking, while the i7-1280P is locked. Both are mobile-segment parts on the Intel BGA 1744 socket, and both are currently marked as Active in production status. The release dates differ slightly, with the i9 launching on 2022-01-03 and the i7 following on 2022-02-22.

Specification Differences

The specification sheet reveals the root cause of the performance gap. The base clock differs substantially: the i9-12900HK runs at 2.50 GHz, while the i7-1280P is set to 1.80 GHz. This 0.70 GHz difference in base frequency gives the i9 a significant head start in sustained workloads. Boost clocks differ by 0.20 GHz, with the i9 reaching 5.00 GHz and the i7 capping at 4.80 GHz.

Thermal design power is the other major differentiator. The i9-12900HK has a TDP of 45 W, while the i7-1280P is rated at 28 W. This 17 W delta explains why the i9 can maintain higher clocks under load and achieve the large multi-threaded wins observed in the benchmark data. The part numbers differ as well: the i7-1280P is SRLD5 and the i9-12900HK is SRLD3. The generation labels differ, with the i7 listed as "Core i7 (Alder Lake-P)" and the i9 as "Core i9 (Alder Lake-H)". The i9 is also part of the "Core 12th Gen" series, while the i7 has no series designation listed.

The Verdict

The benchmark data presents a clear hierarchical relationship. The Intel Core i9-12900HK is the superior processor in every measured workload, with its advantages ranging from 1.3% in single-core Cinebench R23 to 36.2% in multi-core Cinebench R23. The i9’s higher base and boost clocks, combined with its 45 W TDP, allow it to extract significantly more performance from the same 14-core, 20-thread Alder Lake architecture. For users prioritizing multi-threaded rendering, data compression, or encryption, the i9 delivers 20-36% more throughput, which is a substantial gain for demanding professional workloads.

The Intel Core i7-1280P, however, is not a poor performer in absolute terms. Its single-core scores are within 1.3-7% of the i9, meaning day-to-day application responsiveness will be nearly identical. The i7’s 28 W TDP suggests it is designed for thinner, lighter laptops where thermal constraints are tighter. The data indicates that the i7 is the appropriate choice for a chassis that cannot dissipate 45 W of heat, as it retains most of the single-threaded performance while sacrificing multi-threaded throughput. The i9-12900HK is the pick for maximum performance in all scenarios, provided the cooling solution can handle its higher power draw. The i7-1280P is the pick for efficiency-focused designs where the 36.2% multi-core deficit is an acceptable trade-off for a 17 W lower TDP. Both chips sit at the same 78th percentile, but the distribution of scores within that percentile is heavily skewed toward the i9.