CPUBoss Review Our evaluation of 640 vs 450 among all 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

Sky Diver and Cloud Gate

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?

Sky Diver, Cloud Gate, CompuBench 1.5 Bitcoin mining and 11 more

Value

Are you paying a premium for performance?

Sky Diver, Cloud Gate, CompuBench 1.5 Bitcoin mining and 11 more

No winner declared

Too close to call

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VS

AMD Athlon II X4 640

CPUBoss Winner
Front view of AMD Athlon II X4 640

Differences What are the advantages of each

Front view of AMD Athlon II X4 640

Reasons to consider the
AMD Athlon II X4 640

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More l2 cache 2 MB vs 1.5 MB Around 35% more l2 cache; more data can be stored in the l2 cache for quick access later
Much lower typical power consumption 77.19W vs 113.2W More than 30% lower typical power consumption
Better geekbench 3 Multi-Core score 5,434 vs 4,354 Around 25% better geekbench 3 Multi-Core score
Much lower annual home energy cost 22.89 $/year vs 39.59 $/year More than 40% lower annual home energy cost
More cores 4 vs 3 1 more cores; run more applications at once
Significantly lower annual commercial energy cost 83.22 $/year vs 113.44 $/year More than 25% lower annual commercial energy cost
Better overclocked clock speed (Water) 3.89 GHz vs 3.1 GHz More than 25% better overclocked clock speed (Water)
Front view of AMD Athlon II X3 450

Reasons to consider the
AMD Athlon II X3 450

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Higher clock speed 3.2 GHz vs 3 GHz More than 5% higher clock speed
Better overclocked clock speed (Air) 3.86 GHz vs 3.57 GHz Around 10% better overclocked clock speed (Air)
More l3 cache per core 0.17 MB/core vs 0 MB/core Compared to all cpus, 0.17 MB/core l3 cache per core is just OK
Higher Maximum operating temperature 75 °C vs 71 °C More than 5% higher Maximum operating temperature
Newer Sep, 2010 vs May, 2010 Release date 4 months later

Benchmarks Real world tests of Athlon II X4 640 vs X3 450

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

Athlon II X4 640
121,100 MB/s
Athlon II X3 450
128,950 MB/s

GeekBench (32-bit) Data courtesy Primate Labs

GeekBench (64-bit) Data courtesy Primate Labs

GeekBench

PassMark Data courtesy Passmark

PassMark (Single Core)

Specifications Full list of technical specs

summary

Athlon II X4 640  vs
X3 450 
Clock speed 3 GHz 3.2 GHz
Cores Quad core Tri core
Socket type
AM3
Super 7
Is unlocked No No

features

Has a NX bit Yes Yes
Has virtualization support Yes Yes
Instruction set extensions
SSE4a
SSE2
MMX
SSE3
SSE
3DNow!
Supports dynamic frequency scaling Yes Yes

power consumption

TDP 95W 95W
Annual home energy cost 22.89 $/year 39.59 $/year
Annual commercial energy cost 83.22 $/year 113.44 $/year
Performance per watt 1.54 pt/W 1.07 pt/W
Typical power consumption 77.19W 113.2W

bus

Clock speed 2,000 MHz 100 MHz

details

Athlon II X4 640  vs
X3 450 
Architecture x86-64 x86-64
Threads 4 3
L2 cache 2 MB 1.5 MB
L2 cache per core 0.5 MB/core 0.5 MB/core
L3 cache 0 MB 0.5 MB
L3 cache per core 0 MB/core 0.17 MB/core
Manufacture process 45 nm 45 nm
Max CPUs 1 1
Voltage range 1.05 - 1.4V 0.85 - 1.4V
Operating temperature Unknown - 71°C Unknown - 75°C

overclocking

Overclock popularity 36 16
Overclocked clock speed 3.57 GHz 3.86 GHz
Overclocked clock speed (Water) 3.89 GHz 3.1 GHz
Overclocked clock speed (Air) 3.57 GHz 3.86 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 Athlon II X4 640
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AMD Athlon II X3 450
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