Intel Core i7-12800HE vs Intel Core i9-10940X Comparison

FAQ

Q: Which processor has more cores and threads?

A: Both processors feature 14 cores, but the Intel Core i9-10940X supports 28 threads while the Intel Core i7-12800HE supports 20 threads.

Q: What are the single-core performance differences in Cinebench R23?

A: The Intel Core i9-10940X scores 3320 points in Cinebench R23 single-core, while the Intel Core i7-12800HE scores 3156 points, giving the i9-10940X a 5.2% advantage.

Q: How do the two processors compare in multi-core performance?

A: The Intel Core i9-10940X leads in all multi-core tests, including a 23520 score versus 22360 in Cinebench R23 multi-core, a 5.2% lead.

Q: Which processor has a higher base clock speed?

A: The Intel Core i9-10940X has a base clock of 3.30 GHz, which is higher than the 2.40 GHz base clock of the Intel Core i7-12800HE.

Q: Do these processors have integrated graphics?

A: The Intel Core i7-12800HE includes Iris Xe 96EU integrated graphics, while the Intel Core i9-10940X has no integrated graphics listed in the database.

Q: What is the thermal design power difference?

A: The Intel Core i9-10940X has a TDP of 165 watts, while the Intel Core i7-12800HE has a TDP of 45 watts, a substantial difference in power envelope.

Architecture Differences

The Intel Core i9-10940X belongs to the Cascade Lake generation, specifically the Cascade Lake-X series, built on Intel's 14 nm process node. It is a desktop-class processor that uses the Intel Socket 2066 platform and supports DDR4 memory through a quad-channel memory bus. The architecture leverages 19.25 MB of shared L3 cache, with 64 KB of L1 cache per core and 1 MB of L2 cache per core. The i9-10940X also features an unlocked multiplier, allowing overclocking flexibility, and runs on PCIe Gen 3 connectivity.

The Intel Core i7-12800HE, by contrast, comes from the Alder Lake family, specifically the Alder Lake-H mobile series, built on a 10 nm process node. It uses the Intel BGA 1744 socket and is designed for mobile platforms. Memory support covers both DDR4 and DDR5 through a dual-channel memory bus. The L3 cache is larger at 24 MB shared, and the per-core cache configuration differs: 80 KB of L1 and 1.25 MB of L2 per core. The die size is listed at 217 mm². This processor includes Iris Xe 96EU integrated graphics, supports PCIe Gen 4 with 20 lanes from the CPU, and has a locked multiplier. The part number is SRLE6.

These architectural differences reflect two distinct design goals. The i9-10940X is a high-power desktop part with a 165 W TDP and an unlocked multiplier, aimed at heavy multi-threaded workloads in a stationary chassis. The i7-12800HE is a 45 W mobile part with integrated graphics, designed for laptops and compact systems, prioritizing power efficiency and platform versatility. The node difference, 14 nm versus 10 nm, alongside the newer Alder Lake architecture, indicates a generational shift in Intel's design philosophy, even though the older chip retains a benchmark advantage.

The Verdict

The data points to a clear but nuanced conclusion. The Intel Core i9-10940X wins all six head-to-head benchmark comparisons against the Intel Core i7-12800HE, with each victory coming at a 5.2% margin in the Cinebench suite, except for the R15 single-core test where the margin is 5%. This consistency suggests a small but reliable performance edge across both single-core and multi-core workloads.

For a user building a desktop workstation with an Intel Socket 2066 motherboard and access to high-power cooling, the Intel Core i9-10940X is the stronger choice if raw benchmark performance is the priority. Its 28 threads, higher base clock, and unlocked multiplier give it both an immediate performance lead and overclocking headroom. The quad-channel memory bus also offers greater memory bandwidth potential for memory-sensitive applications.

For a mobile or compact system builder, the Intel Core i7-12800HE is the only viable option between the two, given its BGA 1744 socket and mobile market segment. Its 45 W TDP, integrated Iris Xe graphics, and support for DDR5 memory make it suitable for laptops where power draw and space are limited. The performance gap is modest, around 5% in the recorded benchmarks, so the i7-12800HE does not sacrifice much performance while offering a fundamentally different platform experience.

The percentile rankings place both processors at the 62nd percentile among all CPUs, indicating similar overall standing in the database. The average benchmark score for the i9-10940X is 6605, while the i7-12800HE averages 6467, a difference of roughly 2% in the aggregate. Users who need a desktop part with the highest recorded scores should choose the i9-10940X. Users who need a mobile part with integrated graphics and lower power consumption should choose the i7-12800HE.

Specification Differences

The Intel Core i9-10940X and Intel Core i7-12800HE differ across nearly every major specification field. The i9-10940X has a base clock of 3.30 GHz and a boost clock of 4.80 GHz, while the i7-12800HE has a base clock of 2.40 GHz and a boost clock of 4.60 GHz. Thread counts differ: 28 threads versus 20 threads. The TDP is 165 W for the desktop chip and 45 W for the mobile chip. Sockets are entirely different, with the i9-10940X using Intel Socket 2066 and the i7-12800HE using Intel BGA 1744.

The architectures differ as Cascade Lake versus Alder Lake, with process nodes of 14 nm and 10 nm respectively. Cache hierarchies are different: the i9-10940X has 64 KB L1 per core, 1 MB L2 per core, and 19.25 MB shared L3, while the i7-12800HE has 80 KB L1 per core, 1.25 MB L2 per core, and 24 MB shared L3. Memory support differs, with the i9-10940X supporting DDR4 only and the i7-12800HE supporting both DDR4 and DDR5. The memory bus is quad-channel on the i9-10940X and dual-channel on the i7-12800HE.

PCIe support differs: the i9-10940X uses Gen 3, while the i7-12800HE uses Gen 4 with 20 lanes from the CPU. Integrated graphics are absent on the i9-10940X but present as Iris Xe 96EU on the i7-12800HE. The i9-10940X has an unlocked multiplier, while the i7-12800HE is locked. Market segments differ, with the i9-10940X classified as Desktop and the i7-12800HE as Mobile. The i7-12800HE has a listed die size of 217 mm², while the i9-10940X has no die size recorded. Release dates also differ, with the i9-10940X released on 2019-10-18, while the i7-12800HE has no release date listed.

Head-to-Head Benchmarks

The head-to-head benchmark data covers six Cinebench tests, and the Intel Core i9-10940X wins every one. In Cinebench R15 multi-core, the i9-10940X scores 2370 against 2253 for the i7-12800HE, a 5.2% advantage. In Cinebench R15 single-core, the scores are 334 versus 318, a 5% advantage. The R20 multi-core test shows 9878 for the i9-10940X and 9391 for the i7-12800HE, again a 5.2% lead. R20 single-core results are 1394 versus 1325, a 5.2% margin. R23 multi-core scores are 23520 versus 22360, a 5.2% lead. R23 single-core scores are 3320 versus 3156, a 5.2% margin.

The consistency of the 5.2% delta across most tests is notable. It suggests that the performance gap between the two processors scales uniformly across workload types, rather than favoring one architecture in specific scenarios. The only exception is the R15 single-core test, where the margin narrows slightly to 5%. Even there, the i9-10940X holds a clear lead.

The average benchmark scores reinforce this pattern. The i9-10940X has an average benchmark score of 6605, while the i7-12800HE averages 6467. The nearest rivals for the i9-10940X include the Intel Pentium Gold G6405 at an identical 6605 average score, the Intel Core i9-12900E at 6611 with a 0.1% delta, and the Intel Core i5-13500E at 6586 with a 0.3% delta. The i7-12800HE's nearest rivals include the Intel Xeon D-2796TE at 6510 with a 0.7% delta, the Intel Xeon W-2191B at 6531 with a 1% delta, and the AMD EPYC 7551 at 6391 with a 1.2% delta.

Where Each One Wins

The Intel Core i9-10940X wins in every recorded benchmark category. Its strengths are most apparent in multi-threaded workloads where the 28 threads provide a structural advantage. The 5.2% lead in Cinebench R23 multi-core, 23520 versus 22360, demonstrates its capability in rendering and content creation tasks that scale with thread count. The higher base clock of 3.30 GHz also contributes to its single-core wins, where it leads by 5% to 5.2% across all three Cinebench versions. The unlocked multiplier adds further potential for users willing to overclock, which could widen the gap beyond the recorded scores.

The Intel Core i7-12800HE does not win any benchmark comparisons in the database, but it holds advantages in platform-level features that are not captured by raw performance scores. Its integrated Iris Xe 96EU graphics eliminate the need for a discrete GPU in basic display tasks. The 45 W TDP makes it suitable for thin-and-light mobile systems where thermal and power constraints are critical. Support for DDR5 memory and PCIe Gen 4 connectivity offer modern platform capabilities that the older i9-10940X cannot match. The larger 24 MB L3 cache and 1.25 MB L2 per core provide a different cache hierarchy that may benefit certain access patterns, even if the overall benchmark scores do not reflect an advantage.

In practical terms, the i9-10940X wins for desktop users who prioritize maximum benchmark scores and have the power budget and cooling to support a 165 W part. The i7-12800HE wins for mobile users who need a balanced processor with integrated graphics, modern memory support, and a fraction of the power draw. The benchmark data consistently favors the i9-10940X, but the i7-12800HE's feature set makes it the appropriate choice for an entirely different class of system.