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Differences What are the advantages of each

Front view of Intel Core i7 2600K

Reasons to consider the
Intel Core i7 2600K

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Is unlocked Yes vs No Somewhat common; An unlocked multiplier allows for easier overclocking
Front view of Intel Core i7 2600

Reasons to consider the
Intel Core i7 2600

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Supports trusted computing Yes vs No Somewhat common; Allows for safer, more reliable computing

Benchmarks Real world tests of Core i7 2600K vs 2600

CompuBench 1.5 (Ocean surface simulation) Data courtesy CompuBench

Core i7 2600K
77.01 fps
Core i7 2600
75.8 fps

GeekBench 3 (Multi-core) Data courtesy Primate Labs

Core i7 2600K
11,563
Core i7 2600
10,986

GeekBench 3 (Single core) Data courtesy Primate Labs

GeekBench 3 (AES single core) Data courtesy Primate Labs

Core i7 2600K
2,500,000 MB/s
Core i7 2600
2,470,000 MB/s

GeekBench (32-bit) Data courtesy Primate Labs

Core i7 2600K
12,823
Core i7 2600
11,071

GeekBench (64-bit) Data courtesy Primate Labs

Core i7 2600K
13,916
Core i7 2600
11,820

PassMark Data courtesy Passmark

PassMark (Single Core)

Specifications Full list of technical specs

summary

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

features

Has a NX bit Yes Yes
Supports trusted computing No Yes
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 95W 95W
Annual home energy cost 41.8 $/year 41.87 $/year
Annual commercial energy cost 111.78 $/year 112.13 $/year
Performance per watt 7.53 pt/W 6.48 pt/W
Idle power consumption 74W 74W
Peak power consumption 127.6W 128W
Typical power consumption 114.2W 114.5W

bus

Architecture DMI DMI
Number of links 1 1
Transfer rate 5,000 MT/s 5,000 MT/s

details

Core i7 2600K  vs
2600 
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 995,000,000 1,160,000,000
Max CPUs 1 1
Clock multiplier 34 34
Voltage range 0.85 - 1.45V 1.22 - 1.43V
Operating temperature Unknown - 72.6°C Unknown - 72.6°C

overclocking

Overclocked clock speed 5.05 GHz 3.93 GHz
Overclocked clock speed (Water) 4.76 GHz 3.92 GHz
PassMark (Overclocked) 5,835.1 2,824.9
Overclocked clock speed (Air) 5.05 GHz 3.93 GHz

integrated graphics

GPU GPU GPU
Label Intel® HD Graphics 3000 Intel® HD Graphics 2000
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

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
Intel Core i7 2600K
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Intel Core i7 2600
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