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Differences What are the advantages of each

Front view of AMD Phenom II X6 1055T

Reasons to consider the
AMD Phenom II X6 1055T

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Much more l3 cache 6 MB vs 0 MB Compared to all cpus, 6 MB l3 cache is just OK
More cores 6 vs 2 Three times as many cores; run more applications at once
More threads 6 vs 2 Three times as many threads
Much more l3 cache per core 1 MB/core vs 0 MB/core Compared to all cpus, 1 MB/core l3 cache per core is just OK
Significantly better overclocked clock speed (Air) 3.95 GHz vs 3.72 GHz More than 5% better overclocked clock speed (Air)
Newer May, 2010 vs Jun, 2009 Release date 11 months later
Front view of AMD Athlon II X2 250

Reasons to consider the
AMD Athlon II X2 250

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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 better performance per watt 1.79 pt/W vs 0.94 pt/W More than 90% better performance per watt
Higher clock speed 3 GHz vs 2.8 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 74 °C vs 62 °C Around 20% higher Maximum operating temperature
Much lower annual home energy cost 15.66 $/year vs 54.4 $/year 3.5x lower annual home energy cost
Much lower annual commercial energy cost 56.94 $/year vs 165.56 $/year 2.9x lower annual commercial energy cost

Benchmarks Real world tests of Phenom II X6 1055T vs Athlon II X2 250

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 X6 1055T
133,900 MB/s
Athlon II X2 250
120,700 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

Phenom II X6 1055T  vs Athlon II X2 250 

10.0
6.0

8.8
9.6

Overall

9.4 Out of 10
8.3 Out of 10

Specifications Full list of technical specs

summary

Phenom II X6 1055T  vs
Athlon II X2 250 
Clock speed 2.8 GHz 3 GHz
Turbo clock speed 3.3 GHz 3.6 GHz
Cores Hexa core Dual core
Socket type
AM3
Is unlocked No No

features

Has a NX bit Yes Yes
Has virtualization support Yes Yes
Instruction set extensions
SSE4a
AVX 1.1
SSE2
F16C
MMX
XOP
AVX
SSE3
SSE
BMI1
AMD64
SSE4.1
FMA4
FMA3
SSE4.2
ABM
CVT16
AMD-V
3DNow!
Supplemental SSE3
AES
TBM
Supports dynamic frequency scaling Yes Yes

power consumption

TDP 125W 65W
Annual home energy cost 54.4 $/year 15.66 $/year
Annual commercial energy cost 165.56 $/year 56.94 $/year
Performance per watt 0.94 pt/W 1.79 pt/W
Typical power consumption N/A 52.81W

bus

Clock speed 2,000 MHz 2,000 MHz

details

Phenom II X6 1055T  vs
Athlon II X2 250 
Architecture x86-64 x86-64
Threads 6 2
L2 cache 3 MB 2 MB
L2 cache per core 0.5 MB/core 1 MB/core
L3 cache 6 MB 0 MB
L3 cache per core 1 MB/core 0 MB/core
Manufacture process 45 nm 32 nm
Max CPUs 1 1
Voltage range 1.13 - 1.4V 0.85 - 1.43V
Operating temperature Unknown - 62°C Unknown - 74°C

overclocking

Overclock popularity 227 25
Overclocked clock speed 3.95 GHz 3.72 GHz
Overclocked clock speed (Water) 4.02 GHz 4.04 GHz
PassMark (Overclocked) 2,085.8 2,374.3
Overclocked clock speed (Air) 3.95 GHz 3.72 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 X6 1055T
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AMD Athlon II X2 250
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