Intel Core i5-7640X vs Intel Core i7-10710U Comparison

FAQ

Q: Which processor has more cores and threads?

A: The Intel Core i7-10710U has 6 cores and 12 threads, while the Intel Core i5-7640X has 4 cores and 4 threads. The i7-10710U also carries a larger shared L3 cache at 12 MB versus 6 MB on the i5-7640X.

Q: How do the two chips compare in single-core performance?

A: The i7-10710U wins every single-core benchmark in the database. In Cinebench R23 single-core, it scores 1097 against 851 for the i5-7640X, a 28.9% advantage. The same margin appears in R20 (460 vs 357) and R15 (110 vs 85).

Q: What is the difference in multi-core rendering performance?

A: The i7-10710U leads by roughly 29% across all Cinebench multi-core tests. In R23 multi-core, it scores 7774 versus 6031 for the i5-7640X. In R20 the gap is 3265 versus 2533, and in R15 it is 783 versus 607.

Q: Which chip has a higher boost clock?

A: The Intel Core i7-10710U boosts to 4.70 GHz, while the Intel Core i5-7640X reaches 4.30 GHz. However, the i5-7640X has a much higher base clock at 3.90 GHz compared to 1.10 GHz for the i7-10710U.

Q: Do these processors support integrated graphics?

A: The i7-10710U includes UHD Graphics, while the i5-7640X has no integrated graphics at all. This makes the i7-10710U suitable for systems without a discrete GPU.

Q: Are both processors unlocked for overclocking?

A: No. The Intel Core i5-7640X has an unlocked multiplier, but the Intel Core i7-10710U does not. The i5-7640X is designed for enthusiast tuning, whereas the i7-10710U is a locked mobile part.

The Verdict

The Intel Core i7-10710U is the clear winner in every recorded benchmark. Out of six head-to-head tests, it takes all six, with margins between 28.9% and 29.4% over the i5-7640X. The data shows a sweeping victory for the mobile chip, despite its lower base clock and much lower TDP.

The i5-7640X should only be considered for desktop users who require an unlocked multiplier for manual overclocking or who need the quad-channel DDR4 memory bus. It also has no integrated graphics, so it suits builds that always pair with a discrete GPU. However, in raw performance, the i7-10710U is faster in every metric the database records.

For mobile users, the i7-10710U offers superior multi-threaded rendering and faster single-threaded response. It also includes UHD Graphics, enabling a complete system without a separate video card. The higher core count, double the threads, and larger L3 cache give it a structural advantage that benchmark numbers confirm.

In short, the i7-10710U wins on performance, efficiency, and versatility. The i5-7640X wins only on overclocking flexibility and memory channel width, but it loses every computational test. The verdict is unambiguous: pick the i7-10710U unless the specific desktop features of the i5-7640X are mandatory.

Head-to-Head Benchmarks

The most striking result is the consistency of the i7-10710U's lead. Across six Cinebench tests, the smallest margin is 28.9%, and the largest is 29.4%. There is no test where the i5-7640X scores higher.

In Cinebench R15 multi-core, the i7-10710U scores 783 against 607 for the i5-7640X, a 29% advantage. Single-core R15 shows a similar story: 110 versus 85, a 29.4% lead. These are the closest margins, yet they still represent a substantial performance gap.

Moving to Cinebench R20, the i7-10710U scores 3265 in multi-core, while the i5-7640X manages 2533, a 28.9% delta. In single-core R20, the scores are 460 and 357, again 28.9% apart. The pattern holds exactly in R23: multi-core 7774 versus 6031, single-core 1097 versus 851, both at 28.9%.

The Geekbench tests appear only for the i5-7640X, with a multi-core score of 5137 and a single-core score of 1736. Since the i7-10710U lacks Geekbench entries, no direct comparison is possible from the database. The available Cinebench data, however, paints a complete picture of superiority.

The i7-10710U's wins are not marginal. They are consistent, roughly 29% across every shared benchmark. This suggests a fundamental performance gap, not a test-specific quirk. The i5-7640X never comes within 25% of the i7-10710U in any recorded test.

Specification Differences

The two processors differ in nearly every core specification. The i7-10710U has 6 cores and 12 threads, while the i5-7640X has 4 cores and 4 threads. The i7-10710U's base clock is 1.10 GHz, far lower than the i5-7640X's 3.90 GHz, but its boost clock of 4.70 GHz exceeds the i5-7640X's 4.30 GHz.

L3 cache differs significantly: 12 MB shared on the i7-10710U versus 6 MB shared on the i5-7640X. Both have identical L1 (64 KB per core) and L2 (256 KB per core) caches. Memory support also differs: the i7-10710U supports DDR3 and DDR4, while the i5-7640X supports only DDR4. The i5-7640X features a quad-channel memory bus, a detail not listed for the i7-10710U.

TDP is a major differentiator. The i7-10710U is rated at 25 W, while the i5-7640X draws 112 W. This is a 4.5x difference in power envelope, explaining the i7-10710U's mobile designation and the i5-7640X's desktop orientation.

The socket and market segment also diverge: the i7-10710U uses Intel BGA 1440 and targets mobile, whereas the i5-7640X uses Intel Socket 2066 and targets desktop. The i7-10710U includes UHD Graphics; the i5-7640X has none. The i5-7640X has an unlocked multiplier; the i7-10710U does not. The i7-10710U is marked end-of-life, while the i5-7640X has no production status listed. Release dates also differ: August 2019 for the i7-10710U, June 2017 for the i5-7640X.

Architecture Differences

Both processors are built on Intel's 14 nm process node and manufactured by Intel, but they come from different architectural families. The i7-10710U is based on Comet Lake, specifically the Comet Lake-U codename, part of the Core 10th Gen series. The i5-7640X is based on Kaby Lake, specifically Kaby Lake-X, part of the X-Series 7th Gen.

The fundamental architecture differences explain the benchmark results. Comet Lake-U is designed for power-efficient mobile computing, as evidenced by its 25 W TDP and integrated UHD Graphics. Kaby Lake-X is a desktop enthusiast architecture with a 112 W TDP, no integrated graphics, and an unlocked multiplier for overclocking.

The core count difference is architectural, not just configurational. The i7-10710U's 6 cores and 12 threads support simultaneous multi-threading, while the i5-7640X's 4 cores and 4 threads do not. This doubles the thread count on the i7-10710U, directly contributing to its multi-core wins.

Cache architecture also differs. The i7-10710U has 12 MB of shared L3, twice the 6 MB on the i5-7640X. This larger cache helps the mobile chip maintain performance across workloads, particularly in multi-threaded rendering where data reuse is common.

The i5-7640X's quad-channel memory bus is a notable architectural feature absent from the i7-10710U's specification list. This suggests the i5-7640X can move more data to and from memory, yet the benchmark data shows it still loses to the i7-10710U in every recorded test. The i7-10710U's superior core count and cache size outweigh the memory bandwidth advantage.

Where Each One Wins

The Intel Core i7-10710U wins in every benchmark category recorded. Its six wins include all multi-core and single-core Cinebench tests. The multi-core victories stem from 6 cores and 12 threads versus 4 cores and 4 threads, plus double the L3 cache. The single-core victories come from a higher boost clock (4.70 GHz versus 4.30 GHz) and newer architecture.

The i7-10710U is the choice for any workload that benefits from parallel processing or fast single-thread response. Rendering, video encoding, and general productivity all align with its strengths. Its integrated UHD Graphics also makes it suitable for systems without a discrete GPU, a capability the i5-7640X lacks entirely.

The Intel Core i5-7640X wins in no benchmark tests, but it offers specific non-performance advantages. Its unlocked multiplier allows manual overclocking, a feature absent on the i7-10710U. Its quad-channel DDR4 memory bus provides higher theoretical memory bandwidth, useful for memory-intensive tasks, though this is not reflected in the Cinebench scores.

The i5-7640X also targets a different physical form factor. It uses Intel Socket 2066 for desktop motherboards, while the i7-10710U uses Intel BGA 1440, which is soldered to mobile boards. For users building a desktop with an overclockable CPU and a dedicated GPU, the i5-7640X is the only option between these two.

The i7-10710U is the winner for laptops, all-in-ones, or any compact system where power draw matters. Its 25 W TDP is a fraction of the i5-7640X's 112 W, enabling thinner designs with less cooling. The i5-7640X is for desktop enthusiasts who prioritize manual tuning and memory channel width over out-of-the-box performance.

In summary, the i7-10710U takes all six benchmark wins and offers integrated graphics and efficiency. The i5-7640X offers no performance wins but provides overclocking, quad-channel memory, and a desktop socket. Choose the i7-10710U for speed and versatility; choose the i5-7640X only for specific desktop features.