Manufacturing Process

65nm

65nm

Die Size

90.3 mm^2

144.9 mm^2

Transistors

151M

291M

Clock Speeds

1.20GHz - 2.33GHz

1.06GHz - 2.4GHz+

FSB Frequency

533MHz - 667MHz

533MHz - 800MHz

L1 Cache Size

32KB + 32KB

32KB + 32KB

L2 Cache Size

2MB Shared

2MB - 4MB Shared

Pipeline Stages

12

14

Decoders

1 complex + 2 simple

1 complex + 3 simple

Maximum Decode Rate

3

4+1

Reorder Buffer

80

96

Issue Ports

5

6

Scheduling

Unified Reservation Station

Unified Reservation Station

Scheduler (# of Entries)

24

32

FP Units

FMUL/FADD:  1

FMUL:  1
FADD:  1
FSTORE:  1
FLOAD:  1

SSE Units

1

3

Integer Units

ALU:  2

AGU:  2

ALU:  3

AGU:  2

Load/Store Units

Load:  1

Store:  1

Load:  1

Store:  1

Socket Interface

Socket-M (PGA/BGA)

Socket-M (PGA/BGA) & Socket-P (PGA/BGA)