AMD Athlon II X4 638 vs AMD Athlon II X4 640

Table of Contents

Physical Specifications

Socket AMD Socket FM1 AMD Socket AM3
Process size 32 nm 45 nm
Transistors 1,178 million 300 million
Die size 228 mm² 169 mm²
Package µPGA µPGA

Performance

Frequency 2.7 GHz 3 GHz
Turbo clock
Base clock 100 MHz 200 MHz
Multiplier 27.0x 15.0x
Multiplier unlocked No No
Voltage 1.4125 V 1.4 V
TDP 65 W 95 W

Architecture Details

Vertical Segment Desktop Desktop
Production status unknown End-of-life
Release date Feb 6th, 2012 May 11th, 2010
Codename Llano Propus
Generation Athlon II X4 Athlon II X4
Part AD638XOJZ43GXAD638XOJGXBOX ADX640WFK42GMADX640WFGMBOX
Memory support DDR3 Dual-channel DDR3 Dual-channel
ECC memory No No
PCI Express Gen 2

Cores

Total Cores 4 4
Total Threads 4 4
SMP # CPUs 1 1
Integrated graphics

Cache

Cache L1 128K (per core) 128K (per core)
Cache L2 1MB (per core) 512K (per core)

Features & Technologies

3DNow! Yes Yes
AMD-V Yes Yes
AMD64 Yes Yes
MMX Yes Yes
NX bit Yes Yes
SSE Yes Yes
SSE2 Yes Yes
SSE3 Yes Yes
SSE4A Yes Yes

Compare

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