Core i3-10305 vs Core i3-1125G4

Both the Core i3-10305 and Core i3-1125G4 share an identical 4-core/8-thread configuration. Boost clocks reach 4.5 GHz on the Core i3-10305 versus 3.7 GHz on the Core i3-1125G4 — a 19.5% clock advantage for the Core i3-10305 (base: 3.8 GHz vs 2 GHz). The Core i3-10305 uses the Comet Lake-R (2021) architecture (14 nm), while the Core i3-1125G4 uses Tiger Lake-UP3 (2020−2021) (10 nm SuperFin). In PassMark, the Core i3-10305 scores 9,210 against the Core i3-1125G4's 9,284 — a 0.8% lead for the Core i3-1125G4. Geekbench 6 single-core — the metric most relevant to gaming — records 1,536 vs 1,560, a 1.6% lead for the Core i3-1125G4 that directly translates to higher frame rates. Both processors carry 8 MB (total) of L3 cache.

The Core i3-10305 uses the LGA1200 socket (PCIe 3.0), while the Core i3-1125G4 uses FCBGA1449 (PCIe 4.0) — making them incompatible on the same motherboard. Both support up to DDR4-2666 memory speed. The Core i3-10305 supports up to 128 GB of RAM compared to 64 GB — 66.7% more capacity for professional workloads. Both feature 2-channel memory with ECC support. Both provide 16 PCIe lanes. Chipset compatibility: Z490,B460 (Core i3-10305) and SoC (Core i3-1125G4).

Neither processor supports overclocking. Only the Core i3-1125G4 supports AVX-512 instructions — important for machine learning and scientific applications. Virtualization support: VT-x, VT-d (Core i3-10305) vs VT-x, VT-d, EPT (Core i3-1125G4). Both include integrated graphics — UHD Graphics 630 (Core i3-10305) and UHD Graphics (48 EU) (Core i3-1125G4) — useful as a fallback for troubleshooting or display output without a dedicated GPU. Primary use case: Core i3-1125G4 targets Productivity. Direct competitor: Core i3-1125G4 rivals Ryzen 3 5300U.