CPUBoss Review Our evaluation of 2600K vs 2500K among desktop CPUs (over 75W)

Performance

Benchmark performance using all cores

PCMark 8 Home 3.0 Accelerated, PassMark and 1 more

Single-core Performance

Individual core benchmark performance

PassMark (Single Core), Geekbench 3 Single Core and 1 more

Integrated Graphics

Integrated GPU performance for graphics

Fire Strike

Integrated Graphics (OpenCL)

Integrated GPU performance for parallel computing

CompuBench 1.5 Bitcoin mining and 4 more

Performance per Watt

How efficiently does the processor use electricity?

Fire Strike, CompuBench 1.5 Bitcoin mining and 11 more

Value

Are you paying a premium for performance?

Fire Strike, CompuBench 1.5 Bitcoin mining and 11 more

8.4

CPUBoss Score

Combination of all six facets

Winner
Intel Core i7 2600K 

CPUBoss recommends the Intel Core i7 2600K  based on its .

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VS

Differences What are the advantages of each

Front view of Intel Core i7 2600K

Reasons to consider the
Intel Core i7 2600K

Report a correction

CPUBoss is not aware of any important advantages of the Core i7 2600K vs the Core i5 2500K.

Front view of Intel Core i5 2500K

Reasons to consider the
Intel Core i5 2500K

Report a correction

CPUBoss is not aware of any important advantages of the Core i5 2500K vs the Core i7 2600K.

Benchmarks Real world tests of Core i7 2600K vs i5 2500K

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 2600K
2,500,000 MB/s
Core i5 2500K
2,530,000 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 2600K  vs i5 2500K 

8.0
9.0
The Core i5-2500K also lacks Intel's Hyper-Threading technology, which means its four cores generate a maximum of four processing threads rather than the Core i7-2600K's eight, and that you can expect a drop in performance when working in highly threaded applications.
Core i5 2500K

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

9.7
9.8
Boots up faster, daily things are faster, gaming results in more FPS and it clocks 10x better and higher.
Core i5 2500K

Overall

9.1 Out of 10
9.4 Out of 10

Specifications Full list of technical specs

summary

Core i7 2600K  vs
i5 2500K 
Clock speed 3.4 GHz 3.3 GHz
Turbo clock speed 3.8 GHz 3.7 GHz
Cores Quad core Quad core
Socket type
LGA 1155
Is unlocked Yes Yes

features

Has a NX bit Yes Yes
Supports trusted computing No 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

integrated graphics

GPU GPU GPU
Label Intel® HD Graphics 3000 Intel® HD Graphics 3000
Latest DirectX 10.x 10.1
Number of displays supported 2 2
GPU clock speed 850 MHz 850 MHz
Turbo clock speed 1,350 MHz 1,100 MHz
3DMark06 5,275 5,275

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 2600K  vs
i5 2500K 
Architecture x86-64 x86-64
Threads 8 4
L2 cache 1 MB 1 MB
L2 cache per core 0.25 MB/core 0.25 MB/core
L3 cache 8 MB 6 MB
L3 cache per core 2 MB/core 1.5 MB/core
Manufacture process 32 nm 32 nm
Transistor count 995,000,000 1,160,000,000
Max CPUs 1 1
Clock multiplier 34 33
Voltage range 0.85 - 1.45V 1.2 - 1.5V
Operating temperature Unknown - 72.6°C 5 - 72.6°C

overclocking

Overclock popularity 2,016 3,179
Overclock review score 5 5
Overclocked clock speed 5.05 GHz 4.99 GHz
Overclocked clock speed (Water) 4.72 GHz 4.79 GHz
PassMark (Overclocked) 5,835.1 5,433.6
Overclocked clock speed (Air) 5.05 GHz 4.99 GHz

power consumption

TDP 95W 95W
Annual home energy cost 41.8 $/year 41.29 $/year
Annual commercial energy cost 111.78 $/year 110.03 $/year
Performance per watt 7.54 pt/W 6.8 pt/W
Idle power consumption 74W 73.4W
Peak power consumption 127.6W 125.6W
Typical power consumption 114.2W 112.55W

bus

Architecture DMI DMI
Number of links 1 1
Transfer rate 5,000 MT/s 5,000 MT/s
Intel Core i7 2600K
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Intel Core i5 2500K
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