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Differences What are the advantages of each

Front view of AMD Phenom II X4 940

Reasons to consider the
AMD Phenom II X4 940

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Much better overclocked clock speed (Water) 3.83 GHz vs 3 GHz Around 30% better overclocked clock speed (Water)
Front view of AMD Athlon X4 740

Reasons to consider the
AMD Athlon X4 740

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Much newer manufacturing process 32 nm vs 45 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
Much lower typical power consumption 52.81W vs 101.56W Around 50% lower typical power consumption
Higher clock speed 3.2 GHz vs 3 GHz More than 5% higher clock speed
Much more l2 cache per core 1 MB/core vs 0.5 MB/core 2x more l2 cache per core
Much higher Maximum operating temperature 73 °C vs 62 °C Around 20% higher Maximum operating temperature
Much better overclocked clock speed (Air) 4.21 GHz vs 3.72 GHz Around 15% better overclocked clock speed (Air)
Much lower annual home energy cost 15.66 $/year vs 30.11 $/year Around 50% lower annual home energy cost
Much lower annual commercial energy cost 56.94 $/year vs 109.5 $/year Around 50% lower annual commercial energy cost
Newer Oct, 2012 vs Jan, 2009 Release date over 3 years later

Benchmarks Real world tests of Phenom II X4 940 vs Athlon X4 740

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

Phenom II X4 940
121,350 MB/s
Athlon X4 740
2,030,000 MB/s

GeekBench (32-bit) Data courtesy Primate Labs

GeekBench

3D Mark 11 (Physics)

PassMark Data courtesy Passmark

PassMark (Single Core)

Specifications Full list of technical specs

summary

Phenom II X4 940  vs
Athlon X4 740 
Clock speed 3 GHz 3.2 GHz
Cores Quad core Quad core
Is unlocked Yes Yes

features

Has a NX bit Yes Yes
Has virtualization support Yes Yes
Instruction set extensions
SSE4a
AVX 1.1
SSE2
F16C
MMX
XOP
SSE3
SSE
CLMUL
AMD64
SSE4.1
FMA4
SSE4.2
CVT16
AMD-V
3DNow!
AES
Supports dynamic frequency scaling Yes Yes

power consumption

TDP 125W 65W
Annual home energy cost 30.11 $/year 15.66 $/year
Annual commercial energy cost 109.5 $/year 56.94 $/year
Performance per watt 1.19 pt/W 12.36 pt/W
Typical power consumption 101.56W 52.81W

bus

Clock speed 1,800 MHz 2,000 MHz

details

Phenom II X4 940  vs
Athlon X4 740 
Architecture x86-64 x86-64
Threads 4 4
L2 cache 2 MB 4 MB
L2 cache per core 0.5 MB/core 1 MB/core
Manufacture process 45 nm 32 nm
Max CPUs 1 1
Voltage range 0.88 - 1.5V 0.82 - 1.48V
Operating temperature Unknown - 62°C Unknown - 73°C

overclocking

Overclock popularity 44 13
Overclocked clock speed 3.72 GHz 4.21 GHz
Overclocked clock speed (Water) 3.83 GHz 3 GHz
Overclocked clock speed (Air) 3.72 GHz 4.21 GHz

integrated graphics

GPU None None
Label N/A N/A
Latest DirectX N/A N/A
Number of displays supported N/A N/A
GPU clock speed N/A N/A
Turbo clock speed N/A N/A
3DMark06 N/A N/A
AMD Phenom II X4 940
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AMD Athlon X4 740
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