Celeron 5305U vs Core i3-330UM

The Celeron 5305U packs 2 cores / 2 threads, matching the Core i3-330UM's 2 cores. Boost clocks reach 2.3 GHz on the Celeron 5305U versus 0.1 GHz on the Core i3-330UM — a 183.3% clock advantage for the Celeron 5305U (base: 2.3 GHz vs 1.2 GHz). The Celeron 5305U uses the Comet Lake-U (2019−2020) architecture (14 nm), while the Core i3-330UM uses Arrandale (2010−2011) (32 nm). In PassMark, the Celeron 5305U scores 1,307 against the Core i3-330UM's 1,297 — a 0.8% lead for the Celeron 5305U. Geekbench 6 single-core — the metric most relevant to gaming — records 480 vs 300, a 46.2% lead for the Celeron 5305U that directly translates to higher frame rates. Multi-core Geekbench: 865 vs 600 (36.2% advantage for the Celeron 5305U). L3 cache: 2 MB on the Celeron 5305U vs 3 MB on the Core i3-330UM.

The Celeron 5305U uses the FCBGA1528 socket (PCIe 3.0), while the Core i3-330UM uses BGA1288 (PCIe 2.0) — making them incompatible on the same motherboard. Maximum memory speed reaches DDR4-2400 on the Celeron 5305U versus DDR3-800 on the Core i3-330UM — the Celeron 5305U supports 28.6% faster memory, which can translate to measurable gains in memory-sensitive workloads. The Celeron 5305U supports up to 64 GB of RAM compared to 8 GB — 155.6% more capacity for professional workloads. Both feature 2-channel memory with ECC support. PCIe lanes: 12 (Celeron 5305U) vs 16 (Core i3-330UM) — the Core i3-330UM offers 4 more lanes for additional GPUs or NVMe drives. Chipset compatibility: Comet Lake-U (Celeron 5305U) and HM55 (Core i3-330UM).

Neither processor supports overclocking. Both support VT-x, VT-d virtualization. Both include integrated graphics — UHD Graphics (Comet Lake) (Celeron 5305U) and Intel HD Graphics (Core i3-330UM) — useful as a fallback for troubleshooting or display output without a dedicated GPU. Primary use case: Celeron 5305U targets Budget, Core i3-330UM targets Legacy Laptop. Direct competitor: Celeron 5305U rivals Pentium Gold 6405U; Core i3-330UM rivals Pentium SU7300.