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AM2+ vs. AM3
Performance on the AM3 platform is only one part of the equation. As many users
have AM2+ motherboards, it is prudent to see how power consumption and performance
differed on AM2+. For AM2+ testing, we used an Asus
M3A78-T motherboard and 2x2GB of G.Skill DDR2 memory running at 800
MHz with 5-5-5-16 timings.
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Test Results: AM2+ vs. AM3
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Test State
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Athlon II X2 250
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Phenom II X2 550
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AM2+
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AM3
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AM2+
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AM3
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Idle
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61W
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60W
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68W
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65W
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VC-1
Playback
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84W
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90W
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85W
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CPU Load
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125W
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122W
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129W
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General power consumption was similar on both platforms for both of AMD's new
processors. Both CPUs used a few watts less on the AM3 platform, but it was
too little to cause any concern.
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Benchmark Comparison
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Test
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Athlon II X2 250
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Phenom II X2 550
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AM2+
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AM3
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AM2+
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AM3
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NOD32
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3:09
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3:35
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2:34
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WinRAR
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3:57
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4:03
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3:20
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3:09
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iTunes
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5:23
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5:36
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4:48
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4:44
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TMPGEnc
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5:21
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5:11
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5:03
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4:54
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PCMark2005
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6722
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6545
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7556
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7217
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Benchmark Power Consumption
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Test
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Athlon II X2 250
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Phenom II X2 550
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AM2+
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AM3
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AM2+
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AM3
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NOD32
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102W
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88W
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103W
|
106W
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WinRAR
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100W
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93W
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104W
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105W
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iTunes
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100W
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98W
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106W
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108W
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TMPGEnc
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112W
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115W
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117W
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118W
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The Athlon II performed slightly better on the AM2+ platform, but used more
power in all the tests it won. The Phenom II X2 favored the AM3 test configuration
in the same way. This is rather appropriate seeing as the X2 250 is the cheaper
processor and more likely to be paired with an AM2+ motherboard.
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