Core i7-640UM vs Athlon 64 X2 4000+

The Core i7-640UM packs 2 cores / 4 threads, matching the Athlon 64 X2 4000+'s 2 cores. Boost clocks reach 2.27 GHz on the Core i7-640UM versus 2 GHz on the Athlon 64 X2 4000+ — a 12.6% clock advantage for the Core i7-640UM. The Core i7-640UM uses the Arrandale (2010−2011) architecture (32 nm), while the Athlon 64 X2 4000+ uses Windsor (2006−2007) (90 nm). In PassMark, the Core i7-640UM scores 1,168 against the Athlon 64 X2 4000+'s 1,175 — a 0.6% lead for the Athlon 64 X2 4000+. Geekbench 6 single-core — the metric most relevant to gaming — records 226 vs 195, a 14.7% lead for the Core i7-640UM that directly translates to higher frame rates. Multi-core Geekbench: 590 vs 380 (43.3% advantage for the Core i7-640UM). L3 cache: 4 MB (total) on the Core i7-640UM vs 0 kB on the Athlon 64 X2 4000+.

The Core i7-640UM uses the BGA1288 socket (PCIe 2.0), while the Athlon 64 X2 4000+ uses AM2 (PCIe 1.1) — making them incompatible on the same motherboard. Maximum memory speed reaches DDR3-1066 on the Core i7-640UM versus DDR2-800 on the Athlon 64 X2 4000+ — the Core i7-640UM supports 40% faster memory, which can translate to measurable gains in memory-sensitive workloads. The Core i7-640UM supports up to 8 GB of RAM compared to 4 GB — 66.7% more capacity for professional workloads. Both feature 2-channel memory with ECC support. PCIe lanes: 16 (Core i7-640UM) vs 0 (Athlon 64 X2 4000+) — the Core i7-640UM offers 16 more lanes for additional GPUs or NVMe drives. Chipset compatibility: HM55,QM57 (Core i7-640UM) and nForce 500,AMD 690G (Athlon 64 X2 4000+).

Neither processor supports overclocking. Virtualization support: VT-x, VT-d (Core i7-640UM) vs AMD-V (Athlon 64 X2 4000+). The Core i7-640UM includes integrated graphics (Intel HD Graphics (Ironlake)), while the Athlon 64 X2 4000+ requires a dedicated GPU. Primary use case: Core i7-640UM targets Legacy Laptop, Athlon 64 X2 4000+ targets Legacy Desktop. Direct competitor: Core i7-640UM rivals Core 2 Duo SU9600.