Celeron J3455E vs Core i3-5020U

The Celeron J3455E packs 4 cores / 4 threads, while the Core i3-5020U offers 2 cores / 4 threads — the Celeron J3455E has 2 more cores. Boost clocks reach 2.3 GHz on the Celeron J3455E versus 2.2 GHz on the Core i3-5020U — a 4.4% clock advantage for the Celeron J3455E (base: 1.5 GHz vs 2.2 GHz). The Core i3-5020U is built on the Broadwell-U (2015) architecture. In PassMark, the Celeron J3455E scores 2,193 against the Core i3-5020U's 2,232 — a 1.8% lead for the Core i3-5020U. Geekbench 6 single-core — the metric most relevant to gaming — records 450 vs 600, a 28.6% lead for the Core i3-5020U that directly translates to higher frame rates. Multi-core Geekbench: 850 vs 1,200 (34.1% advantage for the Core i3-5020U). L3 cache: 2 MB on the Celeron J3455E vs 3 MB (total) on the Core i3-5020U.

Maximum memory speed reaches DDR4-2400 on the Celeron J3455E versus DDR3L-1600 on the Core i3-5020U — the Celeron J3455E supports 28.6% faster memory, which can translate to measurable gains in memory-sensitive workloads. The Core i3-5020U supports up to 16 GB of RAM compared to 8 GB — 66.7% more capacity for professional workloads. Both feature 2-channel memory with ECC support. PCIe lanes: 6 (Celeron J3455E) vs 12 (Core i3-5020U) — the Core i3-5020U offers 6 more lanes for additional GPUs or NVMe drives. Chipset compatibility: N/A (SoC) (Celeron J3455E) and Broadwell-U (Core i3-5020U).

Neither processor supports overclocking. Virtualization support: VT-x (Celeron J3455E) vs VT-x, VT-d (Core i3-5020U). Both include integrated graphics — HD Graphics 500 (Celeron J3455E) and Intel HD Graphics 5500 (Core i3-5020U) — useful as a fallback for troubleshooting or display output without a dedicated GPU. Primary use case: Celeron J3455E targets Low Power, Core i3-5020U targets Mainstream Laptop. Direct competitor: Celeron J3455E rivals Pentium J4205.