CPUBoss Review Our evaluation of 940 vs 2600 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

7.4

CPUBoss Score

Combination of all six facets

Winner
Intel Core i7 940 

CPUBoss recommends the Intel Core i7 940  based on its .

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VS

Differences What are the advantages of each

Front view of Intel Core i7 940

Reasons to consider the
Intel Core i7 940

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CPUBoss is not aware of any important advantages of the 940 vs the 2600.

Front view of Intel Core i7 2600

Reasons to consider the
Intel Core i7 2600

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Has a built-in GPU Yes vs No Somewhat common; A separate graphics adapter is not required
Supports trusted computing Yes vs No Somewhat common; Allows for safer, more reliable computing

Benchmarks Real world tests of Core i7 940 vs 2600

GeekBench 3 (Multi-core) Data courtesy Primate Labs

Core i7 940
7,939
Core i7 2600
10,986

GeekBench 3 (Single core) Data courtesy Primate Labs

GeekBench 3 (AES single core) Data courtesy Primate Labs

Core i7 940
130,400 MB/s
Core i7 2600
2,470,000 MB/s

GeekBench (32-bit) Data courtesy Primate Labs

Core i7 940
7,806
Core i7 2600
11,071

GeekBench (64-bit) Data courtesy Primate Labs

Core i7 940
8,079
Core i7 2600
11,820

GeekBench

Core i7 940
8,852
Core i7 2600
14,233

PassMark Data courtesy Passmark

PassMark (Single Core)

Specifications Full list of technical specs

summary

Core i7 940  vs
2600 
Clock speed 2.93 GHz 3.4 GHz
Turbo clock speed 3.2 GHz 3.8 GHz
Cores Quad core Quad core
Socket type
LGA 1366
LGA 1155
Is unlocked No 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 130W 95W
Annual home energy cost 31.32 $/year 41.87 $/year
Annual commercial energy cost 113.88 $/year 112.13 $/year
Performance per watt 1.48 pt/W 6.48 pt/W
Typical power consumption 105.63W 114.5W

bus

Architecture QPI DMI
Number of links 1 1
Data rate 19,200 MB/s 8 MB/s
Transfer rate 4,800 MT/s 5,000 MT/s

details

Core i7 940  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 45 nm 32 nm
Transistor count 731,000,000 1,160,000,000
Max CPUs 1 1
Clock multiplier 22 34
Voltage range 0.8 - 1.38V 1.22 - 1.43V
Operating temperature Unknown - 67.9°C Unknown - 72.6°C

overclocking

Overclocked clock speed 4.3 GHz 3.93 GHz
Overclocked clock speed (Water) 2.93 GHz 3.92 GHz
Overclocked clock speed (Air) 4.3 GHz 3.93 GHz

integrated graphics

GPU None GPU
Label N/A Intel® HD Graphics 2000
Latest DirectX N/A 10.x
Number of displays supported N/A 2
GPU clock speed N/A 850 MHz
Turbo clock speed N/A 1,350 MHz

memory controller

Memory controller Built-in Built-in
Memory type
DDR3-1333
DDR3-1066
DDR3-800
DDR3
Channels Triple Channel Dual Channel
Supports ECC No No
Maximum bandwidth 25,599.99 MB/s 21,333.32 MB/s
Maximum memory size 24,576 MB 32,768 MB
Intel Core i7 940
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Intel Core i7 2600
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