Intel Core i3-10300 vs Intel Core i5-1035G7 Comparison

The Intel Core i5-1035G7 and Intel Core i3-10300 are both 4-core, 8-thread processors, but they target entirely different platforms: one is a 15-watt mobile part built for thin laptops, the other a 62-watt desktop chip. Despite the i3’s higher clock speeds and desktop pedigree, the benchmark data shows a remarkably consistent, if narrow, victory for the mobile i5 across every Cinebench test recorded. The i5-1035G7 wins all six head-to-head comparisons, though the margins are slim, ranging from 0.7% to 0.8% in multi-core and single-core workloads alike. This suggests that architectural efficiency from the newer Ice Lake design can offset the raw frequency advantage of the Comet Lake desktop part, at least in these specific rendering benchmarks.

Head-to-Head Benchmarks

The most striking pattern in the head-to-head data is the i5-1035G7’s sweep. In Cinebench R15 multi-core, the i5 scores 678 against the i3’s 673, a 0.7% edge. The single-core R15 run is a dead heat at 95 points each, with the i5 declared the winner on a 0% delta — a statistical tie that functionally means identical performance in that workload. Moving to Cinebench R20, the i5 extends its lead slightly: 2829 versus 2808 in multi-core (0.7%), and 399 versus 396 in single-core (0.8%). The R23 results follow the same script, with the i5 posting 6736 to the i3’s 6687 in multi-core (0.7%) and 951 to 944 in single-core (0.7%).

These deltas are tiny, but they are uniform. The i5-1035G7 never loses a single test, even though the i3-10300 runs at a 3.70 GHz base clock and 4.40 GHz boost, versus the i5’s 1.20 GHz base and 3.70 GHz boost. That the mobile chip can match or beat the desktop part in single-core tests, where clock speed usually dominates, points to the Ice Lake core’s superior instructions-per-clock (IPC). The i3’s Comet Lake architecture, built on a 14nm process, appears to lag slightly behind the 10nm Ice Lake design in efficiency, even at higher frequencies.

For context, the i5-1035G7’s average benchmark score is 1948, placing it at the 44th percentile of all CPUs. Its nearest rival is the Intel Xeon E3-1230 v5 at 1947, a 0.1% difference, and the AMD Ryzen 5 PRO 3400GE at 1954, which is 0.3% ahead. The i3-10300, meanwhile, averages 1934, sitting at the 43rd percentile. Its closest competitor is the Intel Core i7-7820HQ at 1940, which is 0.3% faster, and the Intel Core i7-9850HL at 1941, 0.4% ahead. The gap between the two reviewed chips (1948 vs 1934) is roughly 0.7%, which matches the head-to-head deltas — a small but consistent performance advantage for the i5 across the board.

FAQ

Q: Which processor wins more benchmark tests?

A: The Intel Core i5-1035G7 wins all six head-to-head Cinebench tests — R15, R20, and R23, each in both multi-core and single-core variants. The i3-10300 wins zero tests. The largest margin is 0.8% in Cinebench R20 single-core (399 vs 396).

Q: Is the i3-10300 faster in single-core workloads due to its higher boost clock?

A: No. Despite the i3’s 4.40 GHz boost clock versus the i5’s 3.70 GHz, the i5-1035G7 still wins single-core tests. In Cinebench R15 single-core they tie at 95 points, but in R20 (399 vs 396) and R23 (951 vs 944) the i5 leads by 0.8% and 0.7%, respectively.

Q: How do these chips compare to their nearest rivals?

A: The i5-1035G7’s average score of 1948 puts it 0.1% ahead of the Intel Xeon E3-1230 v5 (1947) and 0.3% behind the AMD Ryzen 5 PRO 3400GE (1954). The i3-10300’s 1934 average is 0.2% ahead of the Intel Core i7-1180G7 and AMD Opteron 6348 (both 1930), but 0.3% behind the Intel Core i7-7820HQ (1940).

Q: What are the TDP differences?

A: The i5-1035G7 has a 15-watt TDP, while the i3-10300 has a 62-watt TDP. This makes the i5 suitable for mobile devices, while the i3 is a desktop part with much higher power draw.

Q: Do both processors support the same memory bandwidth?

A: No. The i5-1035G7 supports dual-channel DDR4 with a memory bandwidth of 51.2 GB/s. The i3-10300 also supports dual-channel DDR4, but its bandwidth is 42.7 GB/s — roughly 17% lower, despite the i5 winning all benchmarks.

Q: Which processor has a higher L3 cache?

A: The i3-10300 has 8 MB of shared L3 cache, while the i5-1035G7 has 6 MB. The i3’s larger cache does not translate into a benchmark win, as the i5 still leads in every test.

Where Each One Wins

The i5-1035G7 wins everywhere in the recorded benchmarks, but the real-world distinctions come from platform context. The i5 is a mobile processor on the Intel BGA 1526 socket, built for thin-and-light laptops. Its 15-watt TDP and 10nm Ice Lake architecture make it the clear choice for battery-powered systems where sustained performance per watt matters. The data shows it delivers competitive Cinebench scores despite a low 1.20 GHz base clock, meaning it can boost effectively when needed.

The i3-10300, on the other hand, is a desktop processor on the Intel Socket 1200. Its 62-watt TDP and 14nm Comet Lake architecture are designed for always-plugged-in systems with active cooling. While it loses every head-to-head test to the i5, the deltas are so small (0.7-0.8%) that in real applications, users would struggle to notice a difference. The i3’s higher 4.40 GHz boost clock may offer better responsiveness in lightly-threaded tasks that are not captured by Cinebench, though the benchmark data does not support this claim directly.

For users choosing between them, the decision is less about raw CPU performance and more about platform. If you need a laptop, the i5-1035G7 is the only option of the two. If you are building a desktop, the i3-10300 provides nearly identical Cinebench scores with the flexibility of a Socket 1200 motherboard. Neither chip has a meaningful advantage in the tested workloads; the i5’s 6-win sweep is technically perfect but practically negligible.

Specification Differences

The two processors differ in almost every key specification except core count (4), thread count (8), and memory type (DDR4). The i5-1035G7 has a base clock of 1.20 GHz, while the i3-10300 runs at 3.70 GHz. The boost clocks are 3.70 GHz and 4.40 GHz, respectively. TDP is a major divider: 15 watts for the i5 versus 62 watts for the i3.

The i5 uses the Intel BGA 1526 socket and is market-segmented as Mobile; the i3 uses the Intel Socket 1200 and is Desktop. Process nodes differ: the i5 is built on Intel’s 10nm process with a die size of 123 mm², while the i3 uses the 14nm process with no listed die size. L1 cache differs — 80 KB per core for the i5 versus 64 KB per core for the i3 — but L2 is identical at 256 KB per core. L3 cache favors the i3: 8 MB shared versus 6 MB shared for the i5. Memory bandwidth also differs, with the i5 at 51.2 GB/s and the i3 at 42.7 GB/s.

Integrated graphics are different: the i5 has Iris Plus, while the i3 has UHD Graphics 630. The i5 was released on 2019-07-31, while the i3 came out on 2020-04-29. Both are currently marked as Active production status. Neither has an unlocked multiplier. The part numbers are SRGKJ for the i5 and SRH3J for the i3.

Architecture Differences

The i5-1035G7 is built on the Ice Lake architecture, specifically the Ice Lake-U codename, and belongs to the Core i5 (Sunny Cove-U) generation. The i3-10300 uses the Comet Lake architecture with the Comet Lake codename, part of the Core i3 (Comet Lake) generation. This is a fundamental generational split: Ice Lake is Intel’s 10nm architecture with the Sunny Cove core design, while Comet Lake is a refined 14nm design using older Skylake-derived cores.

The process node difference — 10nm for the i5 versus 14nm for the i3 — is the most significant architectural factor. The smaller node allows the i5 to achieve competitive performance at a fraction of the TDP (15W vs 62W) and with a much lower base clock (1.20 GHz vs 3.70 GHz). The i5’s larger L1 cache (80 KB per core vs 64 KB per core) suggests a wider or more efficient core front-end in Sunny Cove. However, the i3 counters with a larger L3 cache (8 MB vs 6 MB), which may help in workloads with large working sets.

Both processors support PCIe Gen 3, but the i3 lists 16 lanes (CPU only), while the i5 does not specify lane count. Both lack ECC memory support. The i5’s higher memory bandwidth (51.2 GB/s vs 42.7 GB/s) is notable given its lower TDP, indicating a more efficient memory controller. The i5’s Iris Plus graphics are a step up from the i3’s UHD Graphics 630, though neither is suited for serious gaming. The release dates are separated by nine months, with the i5 launching first on 2019-07-31 and the i3 following on 2020-04-29.