	Much better performance per watt 15.1 pt/W		Much better performance per dollar 2.46 pt/$
	Better overclocked clock speed (Air) 2.58 GHz

summary	Atom C2558	C2550
Clock speed	2.4 GHz	2.4 GHz
Cores	Quad core	Quad core
features
Has virtualization support	Yes	Yes
Instruction set extensions
SSE2
MMX
SSE3
EM64T
SSE
AES
Supports dynamic frequency scaling	No	No
power consumption
TDP	15W	14W
Annual home energy cost	3.61 $/year	3.37 $/year
Annual commercial energy cost	13.14 $/year	12.26 $/year
Performance per watt	4.2 pt/W	15.1 pt/W
Typical power consumption	12.19W	11.38W
bus
Architecture	FSB	FSB
Number of links	1	1

details	Atom C2558	C2550
Architecture	x86-64	x86-64
Threads	4	4
Manufacture process	22 nm	22 nm
Max CPUs	1	1
overclocking
Overclocked clock speed	2.4 GHz	2.58 GHz
Overclocked clock speed (Water)	2.4 GHz	2.4 GHz
Overclocked clock speed (Air)	2.4 GHz	2.58 GHz
integrated graphics
GPU	None	None
Label	N/A	N/A
Latest DirectX	N/A	N/A
Number of displays supported	N/A	N/A
GPU clock speed	N/A	N/A
Turbo clock speed	N/A	N/A
3DMark06	N/A	N/A
memory controller
Memory controller	Built-in	Built-in
Memory type
DDR3
Channels	Dual Channel	Dual Channel
Supports ECC	Yes	Yes
Maximum bandwidth	12,800 MB/s	12,800 MB/s
Maximum memory size	65,536 MB	65,536 MB

Intel Atom C2558 vs C2550

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