Athlon II X4 605e vs Core i3-2120

The Athlon II X4 605e packs 4 cores / 4 threads, while the Core i3-2120 offers 2 cores / 4 threads — the Athlon II X4 605e has 2 more cores. Boost clocks reach 2.3 GHz on the Athlon II X4 605e versus 3.3 GHz on the Core i3-2120 — a 35.7% clock advantage for the Core i3-2120 (base: 2.3 GHz vs 3.3 GHz). The Athlon II X4 605e uses the Propus (2009−2011) architecture (45 nm), while the Core i3-2120 uses Sandy Bridge (2011−2013) (32 nm). In PassMark, the Athlon II X4 605e scores 1,964 against the Core i3-2120's 1,979 — a 0.8% lead for the Core i3-2120. Cinebench R23 multi-core: 1,140 vs 1,073 (6.1% advantage for the Athlon II X4 605e). Geekbench 6 single-core — the metric most relevant to gaming — records 300 vs 534, a 56.1% lead for the Core i3-2120 that directly translates to higher frame rates. Multi-core Geekbench: 1,069 vs 1,140 (6.4% advantage for the Core i3-2120). L3 cache: 0 kB on the Athlon II X4 605e vs 3 MB (total) on the Core i3-2120.

The Athlon II X4 605e uses the AM3 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 DDR3-1333 memory speed. Both support up to 32 GB of RAM. Both feature 2-channel memory with ECC support. Both provide 16 PCIe lanes. Chipset compatibility: 760G,785G,790GX,880G,890GX (Athlon II X4 605e) and H61,H67,P67,Z68,Q65,Q67,B75,H77,Q75,Q77,Z75,Z77 (Core i3-2120).

Virtualization support: AMD-V (Athlon II X4 605e) vs Yes (Core i3-2120). The Core i3-2120 includes integrated graphics (Intel HD Graphics 2000), while the Athlon II X4 605e requires a dedicated GPU. Primary use case: Athlon II X4 605e targets Desktop.

The Athlon II X4 605e launched at $143 MSRP, while the Core i3-2120 debuted at $138. At current prices ($25 vs $25), the Core i3-2120 is $0 cheaper. In terms of value (PassMark points per dollar), the Athlon II X4 605e delivers 78.6 pts/$ vs 79.2 pts/$ for the Core i3-2120 — making the Core i3-2120 the 0.8% better value option.