Core i3-1125G4 vs Core i5-8600T

The Core i3-1125G4 packs 4 cores / 8 threads, while the Core i5-8600T offers 6 cores / 6 threads — the Core i5-8600T has 2 more cores. Boost clocks reach 3.7 GHz on the Core i3-1125G4 versus 3.7 GHz on the Core i5-8600T — identical boost frequencies (base: 2 GHz vs 2.3 GHz). The Core i3-1125G4 uses the Tiger Lake-UP3 (2020−2021) architecture (10 nm SuperFin), while the Core i5-8600T uses Coffee Lake (2017−2019) (14 nm). In PassMark, the Core i3-1125G4 scores 9,284 against the Core i5-8600T's 9,201 — a 0.9% lead for the Core i3-1125G4. Cinebench R23 multi-core: 5,112 vs 4,633 (9.8% advantage for the Core i3-1125G4). Geekbench 6 single-core — the metric most relevant to gaming — records 1,560 vs 1,224, a 24.1% lead for the Core i3-1125G4 that directly translates to higher frame rates. Multi-core Geekbench: 4,770 vs 4,470 (6.5% advantage for the Core i3-1125G4). L3 cache: 8 MB (total) on the Core i3-1125G4 vs 9 MB (total) on the Core i5-8600T.

The Core i3-1125G4 uses the FCBGA1449 socket (PCIe 4.0), while the Core i5-8600T uses LGA1151 (PCIe 3.0) — making them incompatible on the same motherboard. Both support up to DDR4-3200 memory speed. The Core i5-8600T 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: SoC (Core i3-1125G4) and H310,B360,H370,Q370,Z370,Z390 (Core i5-8600T).

Only the Core i3-1125G4 supports AVX-512 instructions — important for machine learning and scientific applications. Virtualization support: VT-x, VT-d, EPT (Core i3-1125G4) vs Yes (Core i5-8600T). Both include integrated graphics — UHD Graphics (48 EU) (Core i3-1125G4) and UHD Graphics 630 (Core i5-8600T) — 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.