CPUBoss Review Our evaluation of 740 vs 620e among desktop CPUs

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

4.5

CPUBoss Score

Combination of all six facets

Winner
AMD Athlon X4 740 

CPUBoss recommends the AMD Athlon X4 740  based on its overclocking.

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VS

Differences What are the advantages of each

Front view of AMD Athlon X4 740

Reasons to consider the
AMD Athlon X4 740

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Much more l2 cache 4 MB vs 0 MB Compared to all cpus, 4 MB l2 cache is just OK
Is unlocked Yes vs No Somewhat common; An unlocked multiplier allows for easier overclocking
Significantly higher clock speed 3.2 GHz vs 2.7 GHz Around 20% higher clock speed
Much better overclocked clock speed (Air) 4.21 GHz vs 2.6 GHz More than 60% better overclocked clock speed (Air)
Much newer manufacturing process 32 nm vs 45 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
Much more l2 cache per core 1 MB/core vs 0 MB/core Compared to all cpus, 1 MB/core l2 cache per core is just OK
Significantly better overclocked clock speed (Water) 3 GHz vs 2.6 GHz More than 15% better overclocked clock speed (Water)
Newer Oct, 2012 vs May, 2011 Release date over 1 years later
Front view of AMD Athlon II X4 620e

Reasons to consider the
AMD Athlon II X4 620e

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Significantly lower typical power consumption 36.56W vs 52.81W More than 30% lower typical power consumption
Significantly lower annual home energy cost 10.84 $/year vs 15.66 $/year More than 30% lower annual home energy cost
Significantly lower annual commercial energy cost 39.42 $/year vs 56.94 $/year More than 30% lower annual commercial energy cost

Benchmarks Real world tests of Athlon X4 740 vs II X4 620e

PassMark Data courtesy Passmark

Specifications Full list of technical specs

summary

Athlon X4 740  vs
II X4 620e 
Clock speed 3.2 GHz 2.7 GHz
Turbo clock speed 3.7 GHz 0 GHz
Cores Quad core Quad core
Is unlocked Yes No

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 65W 45W
Annual home energy cost 15.66 $/year 10.84 $/year
Annual commercial energy cost 56.94 $/year 39.42 $/year
Performance per watt 12.36 pt/W 2.64 pt/W
Typical power consumption 52.81W 36.56W

bus

Clock speed 2,000 MHz 2,000 MHz

details

Athlon X4 740  vs
II X4 620e 
Architecture x86-64 x86-64
Threads 4 4
L2 cache 4 MB 0 MB
L2 cache per core 1 MB/core 0 MB/core
Manufacture process 32 nm 45 nm
Max CPUs 1 1

overclocking

Overclocked clock speed 4.21 GHz 2.6 GHz
Overclocked clock speed (Water) 3 GHz 2.6 GHz
Overclocked clock speed (Air) 4.21 GHz 2.6 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

memory controller

Memory controller Built-in Built-in
Memory type
DDR3-1866
DDR3
AMD Athlon X4 740
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AMD Athlon II X4 620e
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