Core i3-4340 vs Core i7-2657M

Both the Core i3-4340 and Core i7-2657M share an identical 2-core/4-thread configuration. Boost clocks reach 3.6 GHz on the Core i3-4340 versus 2.7 GHz on the Core i7-2657M — a 28.6% clock advantage for the Core i3-4340 (base: 3.6 GHz vs 1.6 GHz). The Core i3-4340 uses the Haswell (2013−2015) architecture (22 nm), while the Core i7-2657M uses Sandy Bridge (2011−2013) (32 nm). In PassMark, the Core i3-4340 scores 3,490 against the Core i7-2657M's 3,491 — a 0% lead for the Core i7-2657M. Geekbench 6 single-core — the metric most relevant to gaming — records 1,024 vs 535, a 62.7% lead for the Core i3-4340 that directly translates to higher frame rates. L3 cache: 4 MB (total) on the Core i3-4340 vs 4 MB on the Core i7-2657M.

The Core i3-4340 uses the LGA1150 socket (PCIe 3.0), while the Core i7-2657M uses BGA1023 (PCIe 2.0) — making them incompatible on the same motherboard. Both support up to DDR3-1600 memory speed. The Core i3-4340 supports up to 32 GB of RAM compared to 8 GB — 120% more capacity for professional workloads. Both feature 2-channel memory with ECC support. Both provide 16 PCIe lanes. Chipset compatibility: H81,B85,Q85,H87,Q87,Z87,H97,Z97 (Core i3-4340) and HM65,HM67,QM67,QS67,UM67 (Core i7-2657M).

Neither processor supports overclocking. Virtualization support: VT-x, EPT (Core i3-4340) vs VT-x, VT-d, EPT (Core i7-2657M). Both include integrated graphics — HD Graphics 4600 (Core i3-4340) and HD Graphics 3000 (Core i7-2657M) — useful as a fallback for troubleshooting or display output without a dedicated GPU. Primary use case: Core i3-4340 targets Mainstream Desktop, Core i7-2657M targets Ultrabook. Direct competitor: Core i3-4340 rivals FX-6350; Core i7-2657M rivals A6-3420M.