Core i7-620M vs Core i3-2120

Both the Core i7-620M and Core i3-2120 share an identical 2-core/4-thread configuration. Boost clocks reach 3.33 GHz on the Core i7-620M versus 3.3 GHz on the Core i3-2120 — a 0.9% clock advantage for the Core i7-620M (base: 2.66 GHz vs 3.3 GHz). The Core i7-620M uses the Arrandale (2010−2011) architecture (32 nm), while the Core i3-2120 uses Sandy Bridge (2011−2013) (32 nm). In PassMark, the Core i7-620M scores 1,976 against the Core i3-2120's 1,979 — a 0.2% lead for the Core i3-2120. Geekbench 6 single-core — the metric most relevant to gaming — records 350 vs 534, a 41.6% lead for the Core i3-2120 that directly translates to higher frame rates. Multi-core Geekbench: 800 vs 1,140 (35.1% advantage for the Core i3-2120). L3 cache: 4 MB (total) on the Core i7-620M vs 3 MB (total) on the Core i3-2120.

The Core i7-620M uses the PGA988 socket (PCIe 2.0), while the Core i3-2120 uses LGA1155 (PCIe 2.0) — making them incompatible on the same motherboard. Both support up to DDR3-1066 memory speed. The Core i3-2120 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: HM55,QM57,HM57,QS57 (Core i7-620M) and H61,H67,P67,Z68,Q65,Q67,B75,H77,Q75,Q77,Z75,Z77 (Core i3-2120).

Virtualization support: VT-x, VT-d (Core i7-620M) vs Yes (Core i3-2120). Both include integrated graphics — Intel HD Graphics (Core i7-620M) and Intel HD Graphics 2000 (Core i3-2120) — useful as a fallback for troubleshooting or display output without a dedicated GPU. Primary use case: Core i7-620M targets Performance Laptop. Direct competitor: Core i7-620M rivals Core 2 Duo T9600.