Athlon 64 X2 4000+ vs Core i7-640UM

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

The Athlon 64 X2 4000+ uses the AM2 socket (PCIe 1.1), while the Core i7-640UM uses BGA1288 (PCIe 2.0) — making them incompatible on the same motherboard. Maximum memory speed reaches DDR2-800 on the Athlon 64 X2 4000+ versus DDR3-1066 on the Core i7-640UM — 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: 0 (Athlon 64 X2 4000+) vs 16 (Core i7-640UM) — the Core i7-640UM offers 16 more lanes for additional GPUs or NVMe drives. Chipset compatibility: nForce 500,AMD 690G (Athlon 64 X2 4000+) and HM55,QM57 (Core i7-640UM).

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