Intel Core i5-10300H vs Intel Core i5-1035G1 Comparison

The Intel Core i5-10300H is the decisive winner in this mobile matchup, taking 16 of 17 head-to-head benchmarks against the Intel Core i5-1035G1. The single exception is a striking victory for the Ice Lake part in data encryption, where it leads by 47.8%. However, the overall average benchmark scores tell a closer story: the i5-1035G1 averages 9684 against the i5-10300H’s 9243, though both CPUs sit at the 65th percentile among all processors. This discrepancy highlights that the i5-1035G1’s strength in one specialized workload does not translate into broader computing superiority.

Head-to-Head Benchmarks

The i5-10300H dominates the Cinebench suite with remarkably consistent margins. In Cinebench R15 multicore, it scores 700 against 611, a 12.7% advantage. Single-core R15 shows 98 versus 86, a 12.2% lead. The pattern holds through R20 and R23: multicore R20 sees 2919 against 2546 (12.8% ahead), while single-core R20 gives 412 versus 359 (12.9% ahead). R23 multicore yields 6950 versus 6062, and single-core R23 delivers 981 versus 855 — both at 12.8% margins. These consistent single-digit-to-low-teen percentage gaps indicate a fundamental clock-speed advantage rather than architectural superiority in rendering tasks.

PassMark results amplify the i5-10300H’s lead in several throughput-heavy workloads. Data compression is its largest win: 117306 versus 80534, a massive 31.3% gap. Random string sorting shows 14956 versus 9782, a 34.6% blowout. Extended instructions run 7449 versus 5524 (25.8% ahead), and prime number finding scores 27 versus 19 (29.6% ahead). Physics tests give 514 versus 423, a 17.7% edge. Floating point math is closer at 17076 versus 15483 (9.3% ahead), and integer math is nearly even at 27046 versus 26645 (1.5% ahead). Multithread performance shows 8262 versus 7211, a 12.7% advantage, while single-thread PassMark scores 2537 versus 2198, a 13.4% lead.

The i5-1035G1’s sole victory is data encryption, where it scores 4094 against 2770. That 47.8% margin is the largest delta in the entire comparison, suggesting a meaningful architectural edge in cryptographic workloads. The data shows this is not a fluke — the encryption gap dwarfs every other benchmark difference, indicating a specialized hardware or instruction advantage for the Ice Lake design in this specific operation.

Architecture Differences

The two processors diverge fundamentally in process node and microarchitecture. The i5-1035G1 uses Intel’s 10 nm process with the Ice Lake-U architecture (Sunny Cove cores), while the i5-10300H relies on the older 14 nm process with Comet Lake-H architecture. This node difference explains the i5-1035G1’s much lower base clock of 1000 MHz against the i5-10300H’s 2500 MHz, and its lower boost clock of 3.60 GHz versus 4.50 GHz. The i5-10300H compensates for the older node with significantly higher clock speeds, which directly drives its benchmark wins.

Cache configurations differ in L1 only. The i5-1035G1 has 80 KB of L1 per core, while the i5-10300H has 64 KB per core. Both share 256 KB L2 per core and 6 MB of shared L3. The larger L1 cache on the i5-1035G1 likely contributes to its encryption performance, though it does not offset the clock disadvantage elsewhere. TDP is another major split: the i5-1035G1 is a 15 W part versus the i5-10300H’s 45 W, reflecting their different market positions within mobile computing.

Memory support also differs. The i5-1035G1 supports DDR4 only with a dual-channel bus and 51.2 GB/s bandwidth. The i5-10300H supports both DDR3 and DDR4, also dual-channel, but with a lower 46.9 GB/s bandwidth. Despite the i5-1035G1’s higher theoretical memory bandwidth, the i5-10300H wins most memory-sensitive benchmarks, suggesting that raw bandwidth is less critical than clock speed in these workloads. Both use PCIe Gen 3, have integrated UHD Graphics, and are locked (non-unlocked multipliers). Sockets differ: BGA 1526 for the i5-1035G1, BGA 1440 for the i5-10300H.

Where Each One Wins

The i5-10300H is the clear choice for general-purpose and multi-threaded productivity. Its wins span every Cinebench version, PassMark multithread, physics, floating point, integer math, data compression, extended instructions, prime number finding, and random string sorting. The 12-13% margins in Cinebench and multithread tests indicate consistent all-around performance for rendering, compiling, and office workloads. The 25-35% leads in compression, sorting, and extended instructions make it particularly strong for data-heavy tasks like file archiving, database operations, or spreadsheet crunching.

The i5-1035G1 wins only data encryption, but it wins decisively. The 47.8% advantage suggests this chip is disproportionately effective in cryptographic workloads — think VPN traffic processing, secure file encryption, or any application relying heavily on AES-style operations. For users whose primary workload is encryption-heavy, the i5-1035G1 offers a genuine performance edge that no other benchmark in this comparison reflects. Its larger L1 cache and newer 10 nm architecture likely drive this specialization.

Beyond raw performance, the i5-1035G1’s lower TDP (15 W versus 45 W) and smaller die size (123 mm² versus no listed die size for the i5-10300H) position it for thinner, lighter laptops with longer battery life. The i5-10300H’s higher TDP indicates it belongs in larger chassis with better cooling, where sustained performance matters more than power efficiency. Neither chip has a launch MSRP listed, so pricing cannot be factored into this analysis.

The Verdict

The data is unambiguous: the Intel Core i5-10300H is the faster processor for nearly every workload. Its 16-to-1 benchmark win ratio, combined with consistent 12-13% leads in rendering and general compute, makes it the straightforward recommendation for users who prioritize performance. The 1.5% edge in integer math and 9.3% in floating point show it also wins in lighter tasks, not just heavy multi-threaded ones. The 13.4% single-thread lead confirms that even single-core applications benefit from the i5-10300H’s higher clocks.

The Intel Core i5-1035G1’s case rests entirely on encryption performance and efficiency. Its 47.8% encryption win is a genuine differentiator, but it is the only such win. The 15 W TDP versus 45 W means the i5-1035G1 will fit in fanless or ultra-slim designs where the i5-10300H cannot go. Users who need a compact, power-efficient laptop for general use — and who do not regularly process large datasets or render video — may prefer the i5-1035G1 despite its benchmark deficits. Its 65th percentile ranking and higher average benchmark score (9684 versus 9243) suggest it is no slouch, just outclassed by a chip with more thermal headroom.

For anyone choosing between these two in a laptop, the verdict is simple: pick the i5-10300H unless encryption performance or extreme portability is the absolute priority. The data shows no other scenario where the i5-1035G1’s wins outweigh its losses.

FAQ

Q: Which processor wins more benchmarks?

A: The Intel Core i5-10300H wins 16 of 17 head-to-head benchmarks. The Intel Core i5-1035G1 wins only the PassMark data encryption test.

Q: How big is the encryption performance gap?

A: The i5-1035G1 scores 4094 in data encryption versus 2770 for the i5-10300H, a 47.8% advantage. This is the largest margin in any benchmark between the two.

Q: What is the difference in Cinebench R23 multicore scores?

A: The i5-10300H scores 6950 versus 6062 for the i5-1035G1, a 12.8% lead for the i5-10300H.

Q: Do both processors have the same number of cores and threads?

A: Yes, both have 4 cores and 8 threads.

Q: How do their clock speeds compare?

A: The i5-10300H has a base clock of 2.50 GHz and boost of 4.50 GHz. The i5-1035G1 has a base clock of 1.00 GHz and boost of 3.60 GHz.

Q: Which processor has a smaller manufacturing process?

A: The i5-1035G1 uses a 10 nm process, while the i5-10300H uses a 14 nm process.

Specification Differences

| Specification | Intel Core i5-1035G1 | Intel Core i5-10300H |

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

| Base Clock | 1000.00 MHz | 2.50 GHz |

| Boost Clock | 3.60 GHz | 4.50 GHz |

| TDP | 15 W | 45 W |

| Socket | Intel BGA 1526 | Intel BGA 1440 |

| Architecture | Ice Lake | Comet Lake |

| Codename | Ice Lake-U | Comet Lake-H |

| Process Node | 10 nm | 14 nm |

| Die Size | 123 mm² | Not listed |

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

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

| L3 Cache | 6 MB (shared) | 6 MB (shared) |

| Memory Support | DDR4 | DDR3, DDR4 |

| Memory Bandwidth | 51.2 GB/s | 46.9 GB/s |

| Release Date | 2019-07-31 | 2020-09-16 |

| Part Number | SRGKGSRGKL | SRH84 |