E2XXX，E4XXX，E6XXX，Q6XXX，QX6XXX全都是Core Microarchitecture架構下的東西 ，也都是採用Conroe核心(Merom的桌上型版本代號)，依照市場區分

E2XXX，Dual-Core 200FSB L2 1MB
E4XXX，Dual-Core 200FSB L2 2MB
E6XXX，Dual-Core 266FSB L2 2MB & 4MB
Q6XXX，Quad-Croe 266FSB L2 8MB
QX6XXX Quad-Core 266FSB & 333FSB L2 8MB

而45nm的處理器採用的是稱為“Enhanced Intel Core Microarchitecture”架構的東西，主要新增了

1.Fast Radix-16 Divider
2.Super Shuffle Engine
3.Split Load Cache Enhancement
4.Improved Store Forwarding
5.Faster OS Primitive Support
6.Virtualization Performance Improvements
7.Deep Power Down Technology
8.Enhanced Dynamic Acceleration Technology