Intel Core i5-1335U vs Intel Core i7-10700 Comparison

The Intel Core i7-10700 and Intel Core i5-1335U represent two very different design philosophies from Intel, despite both being active products. The i7-10700 is a desktop-focused Comet Lake part from 2020, built on a 14 nm process with 8 cores and 16 threads. The i5-1335U is a mobile-focused Raptor Lake-U part from 2023, built on a 10 nm process with 10 cores and 12 threads. Benchmark data shows the i5-1335U wins more individual tests (10 wins vs 7 for the i7-10700), but the i7-10700 dominates in several heavy multi-threaded workloads. The average benchmark scores are nearly identical, with the i7-10700 at 19145 and the i5-1335U at 18982, placing both at the 73rd percentile among all CPUs. The choice between them depends entirely on whether you need sustained desktop throughput or the efficiency and single-core speed of a modern mobile chip.

The Verdict

From the data, the Intel Core i7-10700 is the pick for users who prioritize raw parallel processing power in sustained workloads. Its 8 cores and 16 threads deliver a commanding 22.7% lead over the i5-1335U in Cinebench R23 multi-core (10910 vs 8889.5). It also crushes the mobile chip in PassMark data compression by 58% (252113 vs 159593) and extended instructions by 80.1% (16160 vs 8974). If your work involves video rendering, code compilation, or heavy spreadsheet crunching that uses all cores, the desktop chip's larger 16 MB shared L3 cache and 65 W TDP give it the headroom to pull ahead.

The Intel Core i5-1335U is the better choice for single-threaded responsiveness and mobile use cases. It wins Cinebench R23 single-core by 8.6% (1684.5 vs 1540) and PassMark single-thread by 13.3% (3336 vs 2891). It also wins Cinebench R15 multi-core by 24.9% (1464 vs 1099) and R20 multi-core by 7.2% (4935 vs 4582), which is surprising given its lower thread count. With a 15 W TDP and support for DDR5 memory, the i5-1335U is clearly designed for laptops where battery life and heat matter more than sustained all-core throughput. The i5-1335U also has a launch MSRP of $340; the i7-10700 has no listed MSRP.

For most users, the verdict is straightforward: if you are building or upgrading a desktop PC and need maximum multi-threaded performance for demanding applications, the i7-10700 is the stronger choice. If you are buying a laptop or need a chip that excels in short bursts of single-threaded activity, the i5-1335U is the better fit. The i5-1335U's wins in encryption (46.3% ahead in PassMark data encryption) and physics (5.1% ahead) suggest it also handles certain real-time tasks better.

FAQ

Q: Which CPU has more cores and threads?

A: The i7-10700 has 8 cores and 16 threads, while the i5-1335U has 10 cores and 12 threads. The i5-1335U has more physical cores, but the i7-10700 has more threads due to Hyper-Threading on all cores.

Q: Why does the i5-1335U win some multi-core tests despite having fewer threads?

A: The i5-1335U wins Cinebench R15 multi-core by 24.9% (1464 vs 1099) and R20 multi-core by 7.2% (4935 vs 4582). This is likely due to its newer 10 nm Raptor Lake architecture and higher base clock of 1300.00 MHz (compared to 2.90 GHz on the i7-10700), which allows it to perform better in short-duration tests.

Q: What is the biggest performance gap between the two?

A: The largest gap is in PassMark extended instructions, where the i7-10700 leads by 80.1% (16160 vs 8974). The second-largest is in PassMark random string sorting, where the i7-10700 leads by 75.9% (31585 vs 17953).

Q: Which CPU has better single-threaded performance?

A: The i5-1335U is ahead in every single-thread benchmark. It leads by 34.9% in Cinebench R15 single-core (238 vs 155), 7.2% in R20 (696 vs 646), 8.6% in R23 (1684.5 vs 1540), and 13.3% in PassMark single-thread (3336 vs 2891).

Q: Do both CPUs support the same memory types?

A: No. The i7-10700 supports DDR4 only, with a memory bandwidth of 46.9 GB/s. The i5-1335U supports both DDR4 and DDR5, but its memory bandwidth is not listed in the data.

Q: Which CPU has a higher TDP?

A: The i7-10700 has a 65 W TDP, while the i5-1335U has a 15 W TDP. This makes the i5-1335U significantly more power-efficient for mobile use.

Architecture Differences

The i7-10700 is built on Intel's Comet Lake architecture, using a 14 nm process node. It features 8 cores with a base clock of 2.90 GHz and a boost clock of 4.80 GHz. The cache layout is 64 KB L1 per core, 256 KB L2 per core, and a shared 16 MB L3 cache. It uses the Intel Socket 1200 and supports PCIe Gen 3 with 16 lanes (CPU only). Its integrated graphics are UHD Graphics 630.

The i5-1335U is built on Raptor Lake-U architecture, using a 10 nm process node. It features 10 cores with a base clock of 1300.00 MHz and a boost clock of 4.60 GHz. The cache layout is 80 KB L1 per core, 1.25 MB L2 per core, and a shared 12 MB L3 cache. It uses the Intel BGA 1744 socket and supports PCIe Gen 4 with 8 lanes (CPU only). Its integrated graphics are Iris Xe Graphics 80EU.

The process node difference is notable: 14 nm vs 10 nm. This explains why the i5-1335U can achieve higher single-core scores despite a lower boost clock (4.60 GHz vs 4.80 GHz). The i5-1335U also has a much larger L2 cache per core (1.25 MB vs 256 KB), which likely contributes to its efficiency. The i7-10700 compensates with a larger shared L3 cache (16 MB vs 12 MB), which benefits multi-threaded workloads that share data.

The i5-1335U supports both DDR4 and DDR5 memory, while the i7-10700 is limited to DDR4. Both use dual-channel memory buses, but the i7-10700 has a listed memory bandwidth of 46.9 GB/s, while the i5-1335U's bandwidth is not specified. The PCIe generation also differs: Gen 3 on the i7-10700 vs Gen 4 on the i5-1335U, though the i7-10700 has twice as many PCIe lanes (16 vs 8).

Specification Differences

| Specification | Intel Core i7-10700 | Intel Core i5-1335U |

|---|---|---|

| Cores | 8 | 10 |

| Threads | 16 | 12 |

| Base Clock | 2.90 GHz | 1300.00 MHz |

| Boost Clock | 4.80 GHz | 4.60 GHz |

| TDP | 65 W | 15 W |

| Socket | Intel Socket 1200 | Intel BGA 1744 |

| Process Node | 14 nm | 10 nm |

| L1 Cache | 64 KB (per core) | 80 KB (per core) |

| L2 Cache | 256 KB (per core) | 1.25 MB (per core) |

| L3 Cache | 16 MB (shared) | 12 MB (shared) |

| Memory Support | DDR4 | DDR4, DDR5 |

| Memory Bandwidth | 46.9 GB/s | Not listed |

| PCIe | Gen 3, 16 Lanes (CPU only) | Gen 4, 8 Lanes (CPU only) |

| Integrated Graphics | UHD Graphics 630 | Iris Xe Graphics 80EU |

| Market Segment | Desktop | Mobile |

| Release Date | 2020-04-29 | 2023-01-03 |

| Launch MSRP | Not listed | $340 |

Head-to-Head Benchmarks

The head-to-head data reveals a clear split: the i7-10700 wins in heavy computation, while the i5-1335U wins in lighter, burst-oriented tasks. The i7-10700's most significant victories come in PassMark extended instructions (80.1% ahead, 16160 vs 8974) and random string sorting (75.9% ahead, 31585 vs 17953). These are workloads that leverage the i7-10700's 16 threads and larger L3 cache. It also leads in PassMark integer math by 22.9% (62988 vs 51244), floating-point math by 10.4% (38823 vs 35176), and multithread by 13.2% (16161 vs 14281). In Cinebench R23 multi-core, the i7-10700 leads by 22.7% (10910 vs 8889.5), confirming its strength in sustained rendering workloads.

The i5-1335U's biggest win is in PassMark data encryption, where it leads by 46.3% (10009 vs 5379). This is a notable reversal, suggesting the newer architecture has dedicated acceleration for encryption tasks. The i5-1335U also wins Cinebench R15 multi-core by 24.9% (1464 vs 1099) and R15 single-core by 34.9% (238 vs 155). These are older benchmarks that may not scale as well with the i7-10700's thread count. The i5-1335U also wins all single-thread tests: R20 by 7.2% (696 vs 646), R23 by 8.6% (1684.5 vs 1540), and PassMark single-thread by 13.3% (3336 vs 2891). It narrowly wins PassMark find prime numbers by 2.1% (48 vs 47) and physics by 5.1% (837 vs 794).

Interestingly, the i5-1335U wins Cinebench R20 multi-core by 7.2% (4935 vs 4582), despite the i7-10700 winning R23 multi-core by 22.7%. This inconsistency suggests the i5-1335U's performance varies more significantly with workload duration and thermal conditions. The i5-1335U also wins Cinebench R15 multi-core by a wide margin (24.9%), which is its best multi-core result.

Where Each One Wins

The Intel Core i7-10700 wins in scenarios requiring sustained multi-threaded throughput with large data sets. Its 80.1% lead in extended instructions and 75.9% lead in random string sorting make it ideal for scientific computing, data analysis, and complex string manipulation tasks. The 22.9% lead in integer math and 10.4% lead in floating-point math point to strengths in general-purpose computing, spreadsheet calculations, and financial modeling. The 22.7% lead in Cinebench R23 multi-core indicates it is better suited for video rendering, 3D animation, and other Creative Cloud workloads that run for extended periods. The 13.2% lead in PassMark multithread confirms its advantage in heavily threaded applications like database management and virtualization.

The Intel Core i5-1335U wins in scenarios involving short bursts of activity, single-threaded tasks, and encryption. Its 46.3% lead in data encryption makes it the clear choice for VPNs, secure communications, and file encryption tools. The 34.9% lead in Cinebench R15 single-core and 13.3% lead in PassMark single-thread indicate better responsiveness for everyday tasks like web browsing, office applications, and light photo editing. The 5.1% lead in physics suggests it handles real-time physics calculations in games or simulations better. The i5-1335U also wins Cinebench R15 multi-core by 24.9% and R20 multi-core by 7.2%, which could indicate that its 10 cores respond faster to short, parallel tasks that don't sustain high power draw. For mobile users, the 15 W TDP means less heat and longer battery life compared to the 65 W desktop chip.