Core i3-2312M vs Pentium 3805U

The Core i3-2312M packs 2 cores / 4 threads, matching the Pentium 3805U's 2 cores. Boost clocks reach 2.1 GHz on the Core i3-2312M versus 1.9 GHz on the Pentium 3805U — a 10% clock advantage for the Core i3-2312M (base: 2.1 GHz vs 1.9 GHz). The Core i3-2312M uses the Sandy Bridge (2011−2013) architecture (32 nm), while the Pentium 3805U uses Broadwell-U (2015) (14 nm). In PassMark, the Core i3-2312M scores 1,189 against the Pentium 3805U's 1,196 — a 0.6% lead for the Pentium 3805U. L3 cache: 3 MB (total) on the Core i3-2312M vs 2 MB (total) on the Pentium 3805U.

The Core i3-2312M uses the PGA988 socket (PCIe 2.0), while the Pentium 3805U uses FCBGA1168 (PCIe 3.0) — making them incompatible on the same motherboard. Maximum memory speed reaches 1333 on the Core i3-2312M versus DDR3L-1600 on the Pentium 3805U — the Core i3-2312M supports 199.1% faster memory, which can translate to measurable gains in memory-sensitive workloads. Both support up to 16 of RAM. Both feature 2-channel memory with ECC support. PCIe lanes: 16 (Core i3-2312M) vs 12 (Pentium 3805U) — the Core i3-2312M offers 4 more lanes for additional GPUs or NVMe drives.

Neither processor supports overclocking. Virtualization support: true (Core i3-2312M) vs VT-x, VT-d (Pentium 3805U). Both include integrated graphics — Intel HD Graphics 3000 (Core i3-2312M) and HD Graphics (Broadwell) (Pentium 3805U) — useful as a fallback for troubleshooting or display output without a dedicated GPU. Primary use case: Pentium 3805U targets Mobile.