AMD Phenom II X2 B55 vs Intel Core 2 Duo E8400

Table of Contents

Physical Specifications

Socket AMD Socket AM3 Intel Socket 775
Process size 45 nm 45 nm
Transistors 758 million 410 million
Die size 258 mm² 104 mm²
Package µPGA FC-LGA6
Foundry Intel
tCaseMax 72°C

Performance

Frequency 3 GHz 3 GHz
Turbo clock
Base clock 200 MHz 333 MHz
Multiplier 15.0x 9.0x
Multiplier unlocked No No
Voltage 1.425 V 1.2 V
TDP 80 W 65 W

Architecture Details

Vertical Segment Desktop Desktop
Production status End-of-life End-of-life
Release date Oct 1st, 2009 Jan 1st, 2008
Codename Callisto Wolfdale
Generation Phenom II X2 Core 2 Duo
Part HDXB55WFK2DGM SLAPLSLB9J
Memory support DDR3 Dual-channel DDR1, DDR2, DDR3 Dual-channel
ECC memory No No
PCI Express Gen 2 Gen 2

Cores

Total Cores 2 2
Total Threads 2 2
SMP # CPUs 1 1
Integrated graphics

Cache

Cache L1 128K (per core) 64K (per core)
Cache L2 512K (per core) 6MB (shared)
Cache L3 6MB (shared)

Notes

Notes AMD Business Class processor, availability guaranteed for 24 months after release. Spec Code of E0 Stepping: SLB9J

Features & Technologies

3DNow! Yes
AMD-V Yes
AMD64 Yes
C1E Yes
C2E Yes
EIST Yes
Intel 64 Yes
MMX Yes Yes
NX bit Yes
SSE Yes Yes
SSE2 Yes Yes
SSE3 Yes Yes
SSE4 Yes
SSE4A Yes
TXT Yes
VT Yes

Compare

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