Intel Core i7-10710U vs Intel Core i7-5775C Comparison

The Intel Core i7-10710U and the Intel Core i7-5775C are both 14 nm Intel processors, but they are engineered for entirely different purposes, and the benchmark data reflects this split decisively. The i7-10710U wins every single head-to-head benchmark in the Cinebench suite, posting margins between 18.3% and 18.7% across both single-core and multi-core tests. However, the i7-5775C is not a failure; it is a desktop part with a higher 65 W TDP, an unlocked multiplier, and a larger die size, which makes it a fundamentally different product for a different socket and use case. The data shows a clean sweep for the mobile chip in raw rendering performance, but the desktop chip offers its own advantages in platform flexibility and overclocking potential.

Where Each One Wins

The Intel Core i7-10710U wins in every measurable performance category in this comparison. In multi-core workloads, the margin is consistent at 18.6% to 18.7% across Cinebench R15, R20, and R23. For example, the i7-10710U scores 783 in Cinebench R15 multi-core versus 660 for the i7-5775C, and 7774 versus 6549 in Cinebench R23 multi-core. This advantage stems from its 6 cores and 12 threads, compared to the i7-5775C's 4 cores and 8 threads. The single-core results are equally lopsided: the i7-10710U leads by 18.3% in Cinebench R15 single-core (110 vs 93) and by 18.7% in Cinebench R23 single-core (1097 vs 924). This means the mobile chip is not just better at parallel tasks; its per-core performance is also superior, likely due to its higher boost clock of 4.70 GHz versus 3.70 GHz for the desktop part.

The i7-5775C wins in areas outside raw Cinebench scores. Its data includes a Geekbench multi-core score of 4989 and a single-core score of 1441, which are not present in the i7-10710U's benchmark list, giving the desktop chip a measurable advantage in that specific test suite. Furthermore, the i7-5775C has a production status of "Active," whereas the i7-10710U is marked as "End-of-life," meaning the desktop chip is still available for purchase in the current market. The i7-5775C also has a launch MSRP of $366, a detail not available for the i7-10710U, and it supports an unlocked multiplier for overclocking, which the mobile chip does not.

Architecture Differences

The two processors come from different architectural eras despite sharing the same 14 nm process node. The Intel Core i7-10710U uses the Comet Lake architecture, specifically the Comet Lake-U codename, and belongs to the 10th Generation Core series. It has a mobile market segment, a TDP of 25 W, and uses the Intel BGA 1440 socket. Its cache configuration includes 64 KB of L1 per core, 256 KB of L2 per core, and a substantial 12 MB of shared L3 cache. It supports both DDR3 and DDR4 memory, but has no stated memory bus or bandwidth data. Its integrated graphics are UHD Graphics, and it has no PCIe information listed.

The Intel Core i7-5775C uses the older Broadwell architecture with the same codename, and belongs to the Core i7 (Broadwell) generation. It is a desktop part with a TDP of 65 W, uses the Intel Socket 1150, and has a die size of 182 mm². Its L1 and L2 caches are identical per-core (64 KB and 256 KB), but its shared L3 cache is only 6 MB, half of the i7-10710U's 12 MB. It only supports DDR3 memory, with a dual-channel bus and a memory bandwidth of 25.6 GB/s. Its integrated graphics are Iris Pro Graphics 6200, and it explicitly lists PCIe Gen 3 with 16 lanes (CPU only). The i7-5775C also has a part number (SR2AG), which the i7-10710U lacks.

Head-to-Head Benchmarks

The head-to-head data is unambiguous: the Intel Core i7-10710U wins all six recorded comparisons. The largest margin is 18.7%, achieved in three tests: Cinebench R20 multi-core (3265 vs 2750), Cinebench R23 multi-core (7774 vs 6549), and Cinebench R23 single-core (1097 vs 924). The smallest margin is 18.3% in Cinebench R15 single-core (110 vs 93). The other two tests, Cinebench R15 multi-core (783 vs 660) and Cinebench R20 single-core (460 vs 388), both show an 18.6% advantage for the i7-10710U.

These consistent margins suggest a systematic performance gap rather than a workload-specific quirk. The i7-10710U's 6-core/12-thread configuration gives it a strong parallel advantage in multi-core tests, but its single-core lead is equally large, indicating that its higher boost clock of 4.70 GHz is delivering real per-thread gains over the i7-5775C's 3.70 GHz. The i7-5775C does not win a single benchmark in this head-to-head set, and its only counter-evidence comes from the Geekbench scores listed in its own benchmark data, which are not directly compared here.

Specification Differences

The specification sheet highlights a clear divergence in design philosophy. The i7-10710U has 6 cores and 12 threads, while the i7-5775C has 4 cores and 8 threads. Base clocks differ dramatically: 1100 MHz for the mobile chip versus 3300 MHz for the desktop chip. Boost clocks also differ, with the i7-10710U reaching 4.70 GHz versus 3.70 GHz for the i7-5775C. TDP is a major differentiator: 25 W for the mobile part versus 65 W for the desktop part, reflecting the former's power efficiency focus. The sockets are incompatible: Intel BGA 1440 for the i7-10710U and Intel Socket 1150 for the i7-5775C.

Cache sizes differ in L3 only; both have 64 KB L1 and 256 KB L2 per core, but the i7-10710U has 12 MB shared L3 versus 6 MB for the i7-5775C. Memory support is another split: the i7-10710U supports DDR3 and DDR4, while the i7-5775C only supports DDR3. The i7-5775C has a dual-channel memory bus and a bandwidth of 25.6 GB/s, while the i7-10710U lists no memory bus or bandwidth data. PCIe support is only listed for the i7-5775C (Gen 3, 16 lanes), not for the mobile chip. Integrated graphics differ: UHD Graphics for the i7-10710U versus Iris Pro Graphics 6200 for the i7-5775C. The i7-5775C is unlocked for overclocking, while the i7-10710U is not. Release dates are far apart: the i7-10710U launched on 2019-08-20, while the i7-5775C launched on 2015-05-14. The i7-5775C has a launch MSRP of $366; the i7-10710U has no MSRP listed.

FAQ

Q: Which processor is faster in multi-core rendering?

A: The Intel Core i7-10710U is faster. It wins Cinebench R15 multi-core with 783 points versus 660, R20 multi-core with 3265 versus 2750, and R23 multi-core with 7774 versus 6549, all showing an 18.6% to 18.7% advantage.

Q: Does the i7-5775C win any benchmark against the i7-10710U?

A: In the head-to-head comparison, the i7-5775C wins zero tests. The i7-10710U wins all six Cinebench tests. However, the i7-5775C has Geekbench scores (4989 multi-core, 1441 single-core) that are not listed for the i7-10710U, so no direct comparison exists for that suite.

Q: Are these processors compatible with the same motherboard?

A: No. The i7-10710U uses the Intel BGA 1440 socket, while the i7-5775C uses Intel Socket 1150. They are not interchangeable.

Q: Which chip has more cache?

A: The i7-10710U has 12 MB of shared L3 cache, while the i7-5775C has 6 MB. Both have 64 KB L1 and 256 KB L2 per core.

Q: Can either processor be overclocked?

A: The i7-5775C has an unlocked multiplier, allowing overclocking. The i7-10710U does not have an unlocked multiplier.

Q: What is the production status of each chip?

A: The i7-10710U is marked as "End-of-life," while the i7-5775C is marked as "Active."

The Verdict

The data points to a clear recommendation for different buyers. If performance in Cinebench-style workloads is the priority, the Intel Core i7-10710U is the unequivocal choice. It wins every head-to-head test by roughly 18.5% regardless of thread count, and its 6-core/12-thread design with 12 MB of L3 cache and a 4.70 GHz boost clock provides a decisive edge in both single- and multi-threaded tasks. Its 25 W TDP also makes it suitable for power-constrained mobile systems, where it can deliver desktop-class rendering scores in a thin chassis.

The Intel Core i7-5775C, however, is for a different user. Its 65 W TDP, desktop socket, and unlocked multiplier signal a DIY or enthusiast audience. It is the only chip here with an "Active" production status and a listed launch MSRP of $366. Its Geekbench scores (4989 multi-core, 1441 single-core) provide an additional data point that the mobile chip lacks, and its Iris Pro Graphics 6200 is a more capable integrated solution than the i7-10710U's UHD Graphics. For a user building a new desktop system on Socket 1150 who wants overclocking headroom and a still-available product, the i7-5775C is the sensible pick. For anyone comparing raw rendering performance, the i7-10710U is the winner without qualification. The verdict is not about which is "better" overall, but which fits the socket, power budget, and workload demands of the user. The benchmark data says the mobile chip is faster; the specification sheet says the desktop chip is more flexible.