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Differences What are the advantages of each

Front view of Intel Pentium D 903

Reasons to consider the
Intel Pentium D 903

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Much more l2 cache 4 MB vs 1 MB 4x more l2 cache; more data can be stored in the l2 cache for quick access later
Much more l2 cache per core 2 MB/core vs 0.5 MB/core 4x more l2 cache per core
Front view of Intel Core i5 650

Reasons to consider the
Intel Core i5 650

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Much newer manufacturing process 32 nm vs 65 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
Significantly higher clock speed 3.2 GHz vs 2.8 GHz Around 15% higher clock speed
More threads 4 vs 2 Twice as many threads

Features Key features of the Pentium D 903  vs Core i5 650 

clock speed

Pentium D 903
2.8 GHz
Core i5 650
3.2 GHz

L2 cache

Specifications Full list of technical specs

summary

Pentium D 903  vs
Core i5 650 
Clock speed 2.8 GHz 3.2 GHz
Cores Dual core Dual core
Socket type
LGA 775
LGA 1156

features

Has a NX bit Yes Yes
Instruction set extensions
SSE2
MMX
SSE4
SSE3
SSE
SSE4.1
SSE4.2
Supplemental SSE3
AES

details

Pentium D 903  vs
Core i5 650 
Threads 2 4
L2 cache 4 MB 1 MB
L2 cache per core 2 MB/core 0.5 MB/core
Manufacture process 65 nm 32 nm

power consumption

Typical power consumption N/A 100.22W
Intel Pentium D 903
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Intel Core i5 650
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