Core m3-7Y30 vs Atom C3558

The Core m3-7Y30 packs 2 cores / 4 threads, while the Atom C3558 offers 4 cores / 4 threads — the Atom C3558 has 2 more cores. Boost clocks reach 2.6 GHz on the Core m3-7Y30 versus 2.2 GHz on the Atom C3558 — a 16.7% clock advantage for the Core m3-7Y30 (base: 1 GHz vs 2.2 GHz). The Core m3-7Y30 uses the Kaby Lake (2016−2019) architecture (14 nm), while the Atom C3558 uses Goldmont (2016−2017) (14 nm). In PassMark, the Core m3-7Y30 scores 2,418 against the Atom C3558's 2,431 — a 0.5% lead for the Atom C3558. L3 cache: 4 MB on the Core m3-7Y30 vs 8 MB on the Atom C3558.

The Core m3-7Y30 uses the FCBGA1515 socket (PCIe 3.0), while the Atom C3558 uses FCBGA1310 (PCIe 3.0) — making them incompatible on the same motherboard. Maximum memory speed reaches LPDDR3-1866 / DDR3L-1600 on the Core m3-7Y30 versus DDR4-2133 on the Atom C3558 — the Atom C3558 supports 28.6% faster memory, which can translate to measurable gains in memory-sensitive workloads. The Atom C3558 supports up to 256 GB of RAM compared to 16 GB — 176.5% more capacity for professional workloads. Both feature 2-channel memory with ECC support. PCIe lanes: 10 (Core m3-7Y30) vs 12 (Atom C3558) — the Atom C3558 offers 2 more lanes for additional GPUs or NVMe drives. Chipset compatibility: Kaby Lake-Y SoC (Core m3-7Y30) and Intel FCBGA1310 (Atom C3558).

Virtualization: VT-x / VT-d / EPT (Core m3-7Y30) / not specified (Atom C3558). The Core m3-7Y30 includes integrated graphics (Intel HD Graphics 615), while the Atom C3558 requires a dedicated GPU. Primary use case: Core m3-7Y30 targets Ultra-portable.