Intel Core i3-10305 vs Intel Core i7-10710U Comparison

The Intel Core i3-10305 and the Intel Core i7-10710U are near-identical in benchmark performance, with the desktop i3 winning every single head-to-head test by less than one percentage point. The i3-10305 leads in all six Cinebench comparisons, yet the average benchmark scores across their entire CPU pools are separated by a mere 0.7% — 2264 for the i3 versus 2248 for the i7. The practical takeaway is that workload selection matters more than raw score differences, as the i7-10710U’s six cores and twelve threads offer a structural advantage in heavily threaded tasks, while the i3-10305’s higher base clock and desktop power envelope give it the edge in latency-sensitive and lightly threaded work. Neither processor breaks away; both sit at the 47th percentile of all CPUs, and their nearest rivals — including the Intel Core i5-9400 and AMD Ryzen 5 PRO 1500 — fall within a 0.8% band.

Where Each One Wins

The data shows a clean sweep for the Intel Core i3-10305 in every benchmark recorded, but the margins are so narrow that the wins are effectively statistical noise. The largest delta is 0.9% in both Cinebench R15 single-core and R20 single-core, meaning the i3-10305’s single-threaded advantage is consistent but minuscule. For multi-core workloads, the i3-10305 leads by 0.6% in Cinebench R15, 0.7% in R20, and 0.7% in R23 — again, sub-one-percent gaps that would not be perceptible in real-world use.

The i7-10710U’s winning territory is not in the benchmark numbers but in its configuration. With 6 cores and 12 threads versus the i3-10305’s 4 cores and 8 threads, the i7-10710U is structurally better suited for parallel processing tasks that scale beyond four cores, such as video encoding or 3D rendering. The i3-10305 counters with a 65 W TDP and a base clock of 3.80 GHz, compared to the i7-10710U’s 25 W TDP and 1100.00 MHz base clock — a massive difference in sustained power delivery. In short, the i3-10305 wins on paper, the i7-10710U wins on paper for thread count, and the actual performance difference is negligible.

Architecture Differences

Both processors belong to Intel’s 10th Gen Core family and use the same 14 nm process node from Intel’s own foundry. The architecture names differ: the i3-10305 is Comet Lake-R, while the i7-10710U is Comet Lake-U. The i3-10305 is a desktop part built for Intel Socket 1200, whereas the i7-10710U is a mobile part on Intel BGA 1440 — a fundamental platform split that dictates their use cases. The i3-10305 supports DDR4 memory over a dual-channel bus with a memory bandwidth of 42.7 GB/s, while the i7-10710U supports both DDR3 and DDR4, though the fact pack does not list a memory bus or bandwidth figure for the mobile chip.

Cache allocation differs significantly. The i3-10305 has 8 MB of shared L3 cache, while the i7-10710U has 12 MB of shared L3 cache — a 50% larger pool for the mobile chip. Both have identical L1 (64 KB per core) and L2 (256 KB per core) caches. The integrated graphics also differ: the i3-10305 uses UHD Graphics 630, while the i7-10710U uses a generic UHD Graphics solution. The i3-10305 has PCIe Gen 3 with 16 lanes (CPU only), while the i7-10710U has no PCIe information listed. The i7-10710U is marked as End-of-life, while the i3-10305 remains Active in production, and the i3-10305 was released later (2021-03-15) compared to the i7-10710U (2019-08-20).

Head-to-Head Benchmarks

The six Cinebench tests all favor the Intel Core i3-10305, with deltas ranging from 0.6% to 0.9%. In Cinebench R15 multi-core, the i3-10305 scores 788 against 783 for the i7-10710U, a 0.6% lead. Single-core R15 shows 111 versus 110, a 0.9% margin. Moving to Cinebench R20, the i3-10305 posts 3287 multi-core and 464 single-core, versus 3265 and 460 for the i7-10710U — leads of 0.7% and 0.9%, respectively. Cinebench R23 follows the same pattern: the i3-10305 scores 7828 multi-core and 1105 single-core, while the i7-10710U scores 7774 and 1097, with a 0.7% delta in both cases.

The largest single margin is 0.9%, which occurs in both Cinebench R15 single-core and R20 single-core. The smallest margin is 0.6% in Cinebench R15 multi-core. Notably, the i7-10710U’s higher boost clock of 4.70 GHz versus the i3-10305’s 4.50 GHz does not translate into any benchmark win, nor does its additional two cores and four threads. The i3-10305 wins all six head-to-head comparisons, for a total of 6 wins to 0.

FAQ

Q: Which processor has a higher single-core score?

A: The Intel Core i3-10305 wins every single-core test, with 111 versus 110 in Cinebench R15, 464 versus 460 in R20, and 1105 versus 1097 in R23.

Q: Does the i7-10710U’s extra cores and threads give it a multi-core advantage?

A: No. Despite having 6 cores and 12 threads versus the i3-10305’s 4 cores and 8 threads, the i7-10710U loses all three multi-core tests, with deltas of 0.6%, 0.7%, and 0.7% in Cinebench R15, R20, and R23, respectively.

Q: What is the average benchmark score difference between the two?

A: The i3-10305 has an average benchmark score of 2264, while the i7-10710U scores 2248, a difference of 0.7%. Both rank at the 47th percentile of all CPUs.

Q: Are these processors on the same socket?

A: No. The i3-10305 uses Intel Socket 1200, while the i7-10710U uses Intel BGA 1440. They are not interchangeable.

Q: Which has more L3 cache?

A: The i7-10710U has 12 MB of shared L3 cache, compared to 8 MB for the i3-10305.

Q: What is the production status of each chip?

A: The i3-10305 is Active, while the i7-10710U is End-of-life.

Specification Differences

| Specification | Intel Core i3-10305 | Intel Core i7-10710U |

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

| Cores | 4 | 6 |

| Threads | 8 | 12 |

| Base Clock | 3.80 GHz | 1100.00 MHz |

| Boost Clock | 4.50 GHz | 4.70 GHz |

| TDP | 65 W | 25 W |

| Socket | Intel Socket 1200 | Intel BGA 1440 |

| Codename | Comet Lake-R | Comet Lake-U |

| Generation | Core i3 (Comet Lake) | Core i7 (Comet Lake-U) |

| L3 Cache | 8 MB (shared) | 12 MB (shared) |

| Memory Support | DDR4 | DDR3, DDR4 |

| Memory Bus | Dual-channel | Not listed |

| Memory Bandwidth | 42.7 GB/s | Not listed |

| PCIe | Gen 3, 16 Lanes (CPU only) | Not listed |

| Integrated Graphics | UHD Graphics 630 | UHD Graphics |

| Market Segment | Desktop | Mobile |

| Production Status | Active | End-of-life |

| Release Date | 2021-03-15 | 2019-08-20 |

The Verdict

The data is unambiguous: the Intel Core i3-10305 outperforms the Intel Core i7-10710U in every benchmark recorded, but the margins are so thin — all under 1% — that the winner is academic. The i3-10305’s wins come from its higher base clock (3.80 GHz versus 1100.00 MHz) and desktop power envelope (65 W versus 25 W), which allow sustained performance that the mobile chip cannot match. The i7-10710U’s only structural advantages are its 6 cores, 12 threads, and larger 12 MB L3 cache, none of which yield a single benchmark victory.

For a desktop user building a system with a discrete GPU and a socketed motherboard, the i3-10305 is the clear pick — it wins all tests, is still in Active production, and supports DDR4 at 42.7 GB/s bandwidth. For a mobile user needing an integrated, low-power solution, the i7-10710U is the only option of the two, given its BGA 1440 socket and 25 W TDP, but its End-of-life status makes it a legacy choice. The benchmark results indicate that performance parity is near-perfect, so the decision should be driven by platform needs, not raw scores. The i3-10305 leads in every metric, yet the i7-10710U’s thread count and cache size make it the more future-proof option for heavily parallel applications — if that trade-off matters more than a 0.7% average score gap.