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Differences What are the advantages of each

Front view of Intel Core i7 2600S

Reasons to consider the
Intel Core i7 2600S

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Supports trusted computing Yes vs No Somewhat common; Allows for safer, more reliable computing
Front view of Intel Core i7 2600K

Reasons to consider the
Intel Core i7 2600K

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Much higher clock speed 3.4 GHz vs 2.8 GHz More than 20% higher clock speed
Is unlocked Yes vs No Somewhat common; An unlocked multiplier allows for easier overclocking
Much better overclocked clock speed (Water) 4.76 GHz vs 2.8 GHz More than 70% better overclocked clock speed (Water)

Benchmarks Real world tests of Core i7 2600S vs 2600K

GeekBench 3 (Multi-core) Data courtesy Primate Labs

GeekBench 3 (Single core) Data courtesy Primate Labs

GeekBench 3 (AES single core) Data courtesy Primate Labs

Core i7 2600S
2,475,000 MB/s
Core i7 2600K
2,500,000 MB/s

GeekBench (32-bit) Data courtesy Primate Labs

GeekBench (64-bit) Data courtesy Primate Labs

GeekBench

PassMark Data courtesy Passmark

PassMark (Single Core)

Reviews Word on the street

Core i7 2600S  vs 2600K 

8.0
9.0
The new chip is as much as 30 to 40 per cent quicker.
Core i7 2600K

Specifications Full list of technical specs

summary

Core i7 2600S  vs
2600K 
Clock speed 2.8 GHz 3.4 GHz
Turbo clock speed 3.8 GHz 3.8 GHz
Cores Quad core Quad core
Socket type
LGA 1155
Is unlocked No Yes

features

Has a NX bit Yes Yes
Supports trusted computing Yes No
Has virtualization support Yes Yes
Instruction set extensions
SSE2
MMX
SSE4
AVX
SSE3
SSE
SSE4.1
SSE4.2
Supplemental SSE3
AES
Supports dynamic frequency scaling Yes Yes

power consumption

TDP 65W 95W
Annual home energy cost 15.66 $/year 41.8 $/year
Annual commercial energy cost 56.94 $/year 111.78 $/year
Performance per watt 15.85 pt/W 7.53 pt/W
Typical power consumption 52.81W 114.2W

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 21,333.32 MB/s
Maximum memory size 32,768 MB 32,768 MB

details

Core i7 2600S  vs
2600K 
Architecture x86-64 x86-64
Threads 8 8
L2 cache 1 MB 1 MB
L2 cache per core 0.25 MB/core 0.25 MB/core
L3 cache 8 MB 8 MB
L3 cache per core 2 MB/core 2 MB/core
Manufacture process 32 nm 32 nm
Transistor count 1,162,000,000 995,000,000
Max CPUs 1 1
Clock multiplier 28 34
Voltage range Unknown - 1.26V 0.85 - 1.45V
Operating temperature Unknown - 69.1°C Unknown - 72.6°C

overclocking

Overclocked clock speed 3.4 GHz 5.05 GHz
Overclocked clock speed (Water) 2.8 GHz 4.76 GHz
Overclocked clock speed (Air) 3.4 GHz 5.05 GHz

integrated graphics

GPU GPU GPU
Label Intel® HD Graphics 2000 Intel® HD Graphics 3000
Latest DirectX 10.x 10.x
Number of displays supported 2 2
GPU clock speed 850 MHz 850 MHz
Turbo clock speed 1,350 MHz 1,350 MHz
3DMark06 3,162 5,275

bus

Architecture DMI DMI
Number of links 1 1
Transfer rate 5,000 MT/s 5,000 MT/s
Intel Core i7 2600S
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Intel Core i7 2600K
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