Core i7-3520M vs Celeron J4105

The Core i7-3520M packs 2 cores / 4 threads, while the Celeron J4105 offers 4 cores / 4 threads — the Celeron J4105 has 2 more cores. Boost clocks reach 3.6 GHz on the Core i7-3520M versus 2.5 GHz on the Celeron J4105 — a 36.1% clock advantage for the Core i7-3520M (base: 2.9 GHz vs 1.5 GHz). The Core i7-3520M uses the Ivy Bridge (2012−2013) architecture (22 nm), while the Celeron J4105 uses Goldmont Plus (2017) (14 nm). In PassMark, the Core i7-3520M scores 2,842 against the Celeron J4105's 2,820 — a 0.8% lead for the Core i7-3520M. L3 cache: 4 MB (total) on the Core i7-3520M vs 4 MB on the Celeron J4105.

The Core i7-3520M uses the PGA988 socket (PCIe 3.0), while the Celeron J4105 uses FCBGA1090 (PCIe 3.0) — making them incompatible on the same motherboard. Maximum memory speed reaches 1600 on the Core i7-3520M versus 2400 on the Celeron J4105 — the Celeron J4105 supports 40% faster memory, which can translate to measurable gains in memory-sensitive workloads. The Core i7-3520M supports up to 32 of RAM compared to 8 — 120% more capacity for professional workloads. Both feature 2-channel memory with ECC support. PCIe lanes: 16 (Core i7-3520M) vs 6 (Celeron J4105) — the Core i7-3520M offers 10 more lanes for additional GPUs or NVMe drives. Chipset compatibility: HM75,HM76,HM77,QM77,QS77 (Core i7-3520M) and BGA1090 (Celeron J4105).

Neither processor supports overclocking. Both support true virtualization. Both include integrated graphics — Intel HD Graphics 4000 (Core i7-3520M) and Intel UHD Graphics 600 (Celeron J4105) — useful as a fallback for troubleshooting or display output without a dedicated GPU. Direct competitor: Core i7-3520M rivals AMD A10-5750M; Celeron J4105 rivals Ryzen Embedded R1305G.