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Front view of Intel Core i5 2500K

Intel Core i5 2500K

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Differences What are the advantages of each

Front view of Intel Core i5 4400E

Reasons to consider the
Intel Core i5 4400E

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Much lower typical power consumption 30.06W vs 112.55W 3.7x lower typical power consumption
Significantly newer manufacturing process 22 nm vs 32 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
Supports trusted computing Yes vs No Somewhat common; Allows for safer, more reliable computing
More number of displays supported 3 vs 2 1 more number of displays supported
Much lower annual home energy cost 8.91 $/year vs 41.29 $/year 4.6x lower annual home energy cost
Much lower annual commercial energy cost 32.41 $/year vs 110.03 $/year 3.4x lower annual commercial energy cost
Newer Jul, 2013 vs Jan, 2011 Release date over 2 years later
Front view of Intel Core i5 2500K

Reasons to consider the
Intel Core i5 2500K

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Is unlocked Yes vs No Somewhat common; An unlocked multiplier allows for easier overclocking
Much better performance per dollar 4.1 pt/$ vs 0.36 pt/$ More than 11.2x better performance per dollar
Higher clock speed 3.3 GHz vs 2.7 GHz More than 20% higher clock speed
Much higher GPU clock speed 850 MHz vs 400 MHz Around 2.2x higher GPU clock speed
More l2 cache 1 MB vs 0.5 MB 2x more l2 cache; more data can be stored in the l2 cache for quick access later
Higher turbo clock speed 3.7 GHz vs 3.3 GHz More than 10% higher turbo clock speed
Much better PassMark (Single core) score 1,863 vs 476 Around 4x better PassMark (Single core) score
Much better overclocked clock speed (Air) 4.98 GHz vs 2.7 GHz Around 85% better overclocked clock speed (Air)
More l3 cache 6 MB vs 3 MB 2x more l3 cache; more data can be stored in the l3 cache for quick access later
Significantly better PassMark score 6,383 vs 1,271 More than 5x better PassMark score
Better turbo clock speed 1,100 MHz vs 1,000 MHz 10% better turbo clock speed
Significantly better performance per watt 6.79 pt/W vs 2.61 pt/W More than 2.5x better performance per watt
More cores 4 vs 2 Twice as many cores; run more applications at once
Much better overclocked clock speed (Water) 4.88 GHz vs 2.7 GHz More than 80% better overclocked clock speed (Water)

Benchmarks Real world tests of Core i5 4400E vs 2500K

PassMark Data courtesy Passmark

PassMark (Single Core)

Specifications Full list of technical specs

summary

Core i5 4400E  vs
2500K 
Clock speed 2.7 GHz 3.3 GHz
Turbo clock speed 3.3 GHz 3.7 GHz
Cores Dual core Quad core
Socket type
BGA 1364
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
EM64T
SSE
SSE4.1
SSE4.2
Supplemental SSE3
AES
Supports dynamic frequency scaling Yes Yes

power consumption

TDP 37W 95W
Annual home energy cost 8.91 $/year 41.29 $/year
Annual commercial energy cost 32.41 $/year 110.03 $/year
Performance per watt 2.61 pt/W 6.79 pt/W
Typical power consumption 30.06W 112.55W

bus

Architecture DMI 2.0 DMI
Number of links 1 1
Transfer rate 5,000 MT/s 5,000 MT/s

details

Core i5 4400E  vs
2500K 
Architecture x86-64 x86-64
Threads 4 4
L2 cache 0.5 MB 1 MB
L2 cache per core 0.25 MB/core 0.25 MB/core
L3 cache 3 MB 6 MB
L3 cache per core 1.5 MB/core 1.5 MB/core
Manufacture process 22 nm 32 nm
Max CPUs 1 1
Clock multiplier 27 33

overclocking

Overclocked clock speed 2.7 GHz 4.98 GHz
Overclocked clock speed (Water) 2.7 GHz 4.88 GHz
Overclocked clock speed (Air) 2.7 GHz 4.98 GHz

integrated graphics

GPU GPU GPU
Label HD 4600 Intel® HD Graphics 3000
Number of displays supported 3 2
GPU clock speed 400 MHz 850 MHz
Turbo clock speed 1,000 MHz 1,100 MHz

memory controller

Memory controller Built-in Built-in
Memory type
DDR3-1600
DDR3-1333
DDR3-1066
DDR3
Channels Dual Channel Dual Channel
Supports ECC No No
Maximum bandwidth 25,600 MB/s 21,333.32 MB/s
Maximum memory size 16,384 MB 32,768 MB
Intel Core i5 4400E
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Intel Core i5 2500K
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