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Differences What are the advantages of each

Front view of Intel Pentium 987

Reasons to consider the
Intel Pentium 987

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Supports dynamic frequency scaling Yes vs No Somewhat common; Allows for maximum performance when needed, while conserving power and minimizing heat production when not needed
Front view of Intel Atom Z3745

Reasons to consider the
Intel Atom Z3745

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Has virtualization support Yes vs No Somewhat common; Boosts performance of virtual machines

Benchmarks Real world tests of Pentium 987 vs Atom Z3745

GeekBench 3 (Multi-core) Data courtesy Primate Labs

Pentium 987
1,737
Atom Z3745
2,395

GeekBench 3 (Single core) Data courtesy Primate Labs

GeekBench 3 (AES single core) Data courtesy Primate Labs

Pentium 987
73,700 MB/s
Atom Z3745
283,100 MB/s

GeekBench (32-bit) Data courtesy Primate Labs

Pentium 987
1,715
Atom Z3745
2,454

GeekBench

Pentium 987
1,730
Atom Z3745
2,454

3D Mark 06 (CPU)

PassMark Data courtesy Passmark

Pentium 987
1,223
Atom Z3745
1,071

PassMark (Single Core)

Specifications Full list of technical specs

summary

Pentium 987  vs
Atom Z3745 
Clock speed 1.5 GHz 1.33 GHz
Cores Dual core Quad core

features

Has virtualization support No Yes
Instruction set extensions
SSE2
MMX
SSE4
SSE3
SSE
SSE4.1
SSE4.2
Supplemental SSE3
AES
Supports dynamic frequency scaling Yes No

power consumption

Typical power consumption 13.81W N/A

bus

Architecture DMI FSB
Number of links 1 1

details

Pentium 987  vs
Atom Z3745 
Architecture x86-64 x86-64
Threads 2 4
L2 cache 1 MB 2 MB
L2 cache per core 0.5 MB/core 0.5 MB/core
Manufacture process 32 nm 22 nm
Max CPUs 1 1

overclocking

Overclocked clock speed 1.5 GHz 1.86 GHz
Overclocked clock speed (Water) 1.5 GHz 1.33 GHz
Overclocked clock speed (Air) 1.5 GHz 1.86 GHz

integrated graphics

GPU GPU GPU
Label Intel® HD Graphics Intel® HD Graphics
GPU clock speed 350 MHz 311 MHz

memory controller

Memory controller Built-in Built-in
Memory type
DDR3-1333
DDR3-1066
DDR3
Channels Dual Channel Dual Channel
Supports ECC No No
Maximum bandwidth 21,333.32 MB/s 17,066.66 MB/s
Maximum memory size 16,773.12 MB 4,096 MB
Intel Pentium 987
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Intel Atom Z3745
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