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Differences What are the advantages of each

Front view of AMD Phenom X4 9850

Reasons to consider the
AMD Phenom X4 9850

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Much more l3 cache 2 MB vs 0 MB Compared to all cpus, 2 MB l3 cache is just OK
Much more l2 cache 2 MB vs 1 MB 2x more l2 cache; more data can be stored in the l2 cache for quick access later
Is unlocked Yes vs No Somewhat common; An unlocked multiplier allows for easier overclocking
Much better PassMark score 2,895 vs 1,223 More than 2.2x better PassMark score
Much better PassMark (Single core) score 846 vs 726 More than 15% better PassMark (Single core) score
Much better geekbench 2 (32-bit) score 4,202 vs 1,739 Around 2.5x better geekbench 2 (32-bit) score
More cores 4 vs 2 Twice as many cores; run more applications at once
More threads 4 vs 2 Twice as many threads
Much more l3 cache per core 0.5 MB/core vs 0 MB/core Compared to all cpus, 0.5 MB/core l3 cache per core is just OK
Higher clock speed 2.5 GHz vs 2.4 GHz Around 5% higher clock speed
Much higher Maximum operating temperature 61 °C vs 55 °C More than 10% higher Maximum operating temperature
Newer Jul, 2008 vs May, 2006 Release date over 2 years later
Slightly better overclocked clock speed (Water) 2.88 GHz vs 2.79 GHz Around 5% better overclocked clock speed (Water)
Front view of AMD Athlon X2 4600+

Reasons to consider the
AMD Athlon X2 4600+

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Much lower typical power consumption 52.81W vs 101.56W Around 50% lower typical power consumption
Significantly better overclocked clock speed (Air) 2.96 GHz vs 2.72 GHz Around 10% 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

Benchmarks Real world tests of Phenom X4 9850 vs Athlon X2 4600+

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 X4 9850
97,500 MB/s
Athlon X2 4600+
174.4 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

Specifications Full list of technical specs

summary

Phenom X4 9850  vs
Athlon X2 4600+ 
Clock speed 2.5 GHz 2.4 GHz
Cores Quad core Dual core
Socket type
AM2+
AM2
939
Is unlocked Yes 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 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 0.96 pt/W 0.93 pt/W
Typical power consumption 101.56W 52.81W

details

Phenom X4 9850  vs
Athlon X2 4600+ 
Architecture x86-64 x86-64
Threads 4 2
L2 cache 2 MB 1 MB
L2 cache per core 0.5 MB/core 0.5 MB/core
L3 cache 2 MB 0 MB
L3 cache per core 0.5 MB/core 0 MB/core
Manufacture process 65 nm 65 nm
Max CPUs 1 1
Voltage range 1.05 - 1.3V 1.2 - 1.25V
Operating temperature Unknown - 61°C Unknown - 55°C

overclocking

Overclocked clock speed 2.72 GHz 2.96 GHz
Overclocked clock speed (Water) 2.88 GHz 2.79 GHz
Overclocked clock speed (Air) 2.72 GHz 2.96 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 X4 9850
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AMD Athlon X2 4600+
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