Intel Core i7-10700 vs Intel Core i7-1355U Comparison

Head-to-Head Benchmarks

The benchmark data presents a fascinating split between the Intel Core i7-10700 and the Intel Core i7-1355U, with the mobile chip winning 10 of the 17 recorded head-to-head tests, while the desktop part claims 7 wins. However, the margin of victory tells a more nuanced story than the raw win count.

The most dramatic difference appears in Cinebench R23 multi-core, where the Core i7-10700 scores 10910 against 8286 for the Core i7-1355U, a 31.7% advantage. This is the largest single benchmark gap in the entire dataset, and it demonstrates the sustained multi-threaded capability of the 8-core, 16-thread desktop processor. The older Comet Lake chip also dominates in PassMark's extended instructions test, scoring 16160 versus 8726, an 85.2% lead. That is the biggest percentage differential recorded in any test between these two processors.

PassMark data compression shows another decisive win for the Core i7-10700, with a score of 252113 compared to 155727, a 61.9% advantage. Random string sorting follows a similar pattern: 31585 for the desktop chip versus 17631, a 79.1% lead. Integer math also favors the Core i7-10700, which scores 62988 against 52002, a 21.1% improvement. Floating point math adds another win for the desktop part, 38823 versus 34965, an 11% margin, and PassMark multithread shows a 13% lead (16161 versus 14299).

The Core i7-1355U strikes back decisively in single-threaded workloads. In Cinebench R15 single-core, the mobile chip scores 255.5 versus 155, a 39.3% advantage. Cinebench R23 single-core shows a 15.6% lead (1825 versus 1540), and PassMark single-thread records 3444 versus 2891, a 16.1% edge. The Raptor Lake part also wins Cinebench R15 multi-core with a score of 1393 versus 1099, a 21.1% gap, and Cinebench R20 multi-core with 4949 versus 4582, a 7.4% margin. Both Cinebench R20 single-core and PassMark physics show 7.4% and 10.6% leads for the mobile chip, respectively.

PassMark data encryption is a surprising win for the Core i7-1355U, which scores 9831 versus 5379, a 45.3% advantage. The find prime numbers test is close, with the mobile chip ahead by 7.8% (51 versus 47). Overall, the data suggests the Core i7-1355U excels in bursty, lightly threaded tasks and certain cryptographic operations, while the Core i7-10700 asserts dominance in sustained multi-core rendering and heavy integer workloads.

Architecture Differences

The two processors come from different Intel design eras. The Core i7-10700 uses Comet Lake architecture, built on a 14 nm process node and released in April 2020. It is a desktop part with a 65 W TDP, socketed into Intel Socket 1200. The Core i7-1355U, in contrast, uses Raptor Lake architecture on a 10 nm node, launched in January 2023, and is a mobile processor with a 15 W TDP, soldered to Intel BGA 1744.

Core and thread counts diverge sharply. The Core i7-10700 has 8 cores and 16 threads, all identical high-performance cores. The Core i7-1355U has 10 cores but only 12 threads, indicating a hybrid design that mixes performance and efficiency cores. The base clock of the desktop part is 2.90 GHz, while the mobile chip lists a base clock of 1700.00 MHz (the database records it in MHz units). Boost clocks tell the opposite story: the Core i7-1355U reaches 5.00 GHz, slightly ahead of the Core i7-10700's 4.80 GHz.

Cache configurations also differ significantly. The Core i7-10700 provides 64 KB of L1 cache per core and 256 KB of L2 per core, with 16 MB of shared L3 cache. The Core i7-1355U offers 80 KB of L1 per core and a much larger 1.25 MB of L2 per core, but its shared L3 cache is smaller at 12 MB. This reflects the newer architecture's emphasis on reducing latency for frequently accessed data.

Memory support separates the two as well. The Core i7-10700 supports DDR4 only, while the Core i7-1355U supports both DDR4 and DDR5. Both use dual-channel memory buses, though the database lists memory bandwidth for the desktop part at 46.9 GB/s and leaves that field blank for the mobile chip. PCIe connectivity differs: the Core i7-10700 offers Gen 3 with 16 lanes from the CPU, while the Core i7-1355U provides Gen 4 with 8 lanes. Integrated graphics also change, with the desktop chip using UHD Graphics 630 and the mobile part featuring Iris Xe Graphics 96EU.

FAQ

Q: Which processor has more cores and threads?

A: The Intel Core i7-10700 has 8 cores and 16 threads, while the Intel Core i7-1355U has 10 cores and 12 threads. The desktop part offers more threads despite fewer cores.

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

A: The Core i7-1355U wins every recorded single-threaded benchmark. It leads by 39.3% in Cinebench R15 single-core, 15.6% in Cinebench R23 single-core, and 16.1% in PassMark single-thread.

Q: Which chip is better for multi-core rendering?

A: The Core i7-10700 wins Cinebench R23 multi-core by 31.7%, but the Core i7-1355U wins Cinebench R15 multi-core by 21.1% and Cinebench R20 multi-core by 7.4%. The results vary by workload version.

Q: What are the power requirements for each processor?

A: The Core i7-10700 has a 65 W TDP and is designed for desktop use. The Core i7-1355U has a 15 W TDP and targets mobile systems.

Q: Do these processors support the same memory types?

A: No. The Core i7-10700 supports DDR4 only, while the Core i7-1355U supports both DDR4 and DDR5. Both use dual-channel memory configurations.

Q: Which processor has the higher boost clock?

A: The Core i7-1355U boosts to 5.00 GHz, while the Core i7-10700 boosts to 4.80 GHz. The mobile chip holds the advantage in peak frequency.

Specification Differences

The two processors differ on nearly every major specification. The Core i7-10700 uses Comet Lake architecture on a 14 nm node, while the Core i7-1355U uses Raptor Lake on a 10 nm node. Core counts are 8 versus 10, and thread counts are 16 versus 12. Base clocks are 2.90 GHz for the desktop part and 1700.00 MHz for the mobile part, while boost clocks are 4.80 GHz and 5.00 GHz, respectively. TDP ratings are 65 W versus 15 W, reflecting the desktop versus mobile design targets. Sockets differ: Intel Socket 1200 for the Core i7-10700 and Intel BGA 1744 for the Core i7-1355U.

Cache hierarchies are distinct, with the Core i7-10700 offering 64 KB L1 and 256 KB L2 per core plus 16 MB L3, while the Core i7-1355U provides 80 KB L1 and 1.25 MB L2 per core plus 12 MB L3. Memory support changes from DDR4-only to DDR4 plus DDR5. The memory bandwidth figure of 46.9 GB/s is listed only for the Core i7-10700. PCIe generations differ: Gen 3 with 16 lanes versus Gen 4 with 8 lanes. Integrated graphics move from UHD Graphics 630 to Iris Xe Graphics 96EU. The market segment shifts from Desktop to Mobile, and the release dates are April 2020 versus January 2023. The Core i7-1355U has a recorded launch MSRP of $469, while no launch MSRP is listed for the Core i7-10700. Both processors are locked, with no unlocked multiplier, and both are marked as Active in production status.

Where Each One Wins

The Core i7-10700 is the clear choice for sustained, multi-threaded compute tasks. Its 31.7% lead in Cinebench R23 multi-core and 13% advantage in PassMark multithread indicate strong rendering and productivity performance. The 85.2% margin in extended instructions and 61.9% lead in data compression point to advantages in scientific computing, compression tools, and code that leverages advanced SIMD instructions. Integer math and random string sorting also favor the desktop chip, making it suitable for database workloads, sorting algorithms, and general number crunching.

The Core i7-1355U wins decisively in single-threaded responsiveness, with leads of 39.3% in Cinebench R15 single-core and 16.1% in PassMark single-thread. This translates to snappier application launches and better performance in lightly threaded software. The 45.3% advantage in data encryption suggests strong cryptographic throughput, which matters for VPNs, secure communications, and disk encryption. The mobile chip also wins Cinebench R15 and R20 multi-core, indicating that for shorter render jobs, the Raptor Lake part can outperform the older desktop design. Its 15 W TDP makes it suitable for thin and light laptops where battery life and thermals take priority.

The overall average benchmark scores are close: the Core i7-10700 averages 19145, while the Core i7-1355U averages 18730, a difference of roughly 2%. Both sit at the 73rd percentile among all CPUs in the database. The desktop chip's nearest rivals include the Intel Core i7-8700K, which trails by 0.5%, and the Intel Core i5-12400F, which trails by 0.6%. The mobile chip's closest competitor is the AMD Ryzen AI 5 330, which leads by 0.4%, and the Intel Core i5-12400, which trails by 0.3%. The data shows two very different design philosophies: one optimized for desktop power and sustained throughput, the other for mobile efficiency and single-thread agility.