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CPU Performance
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Test Results: Benchmarks
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Processor
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NOD32
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WinRAR
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iTunes
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TMPGEnc
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PCMark05 |
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C2Q Q9550
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2:31
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2:59
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3:33
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3:14
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8760
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Core i5-750
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2:31
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2:38
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3:48
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3:21
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8390
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Core i5-661 (Turbo)
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2:03
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3:30
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3:03
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3:32
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9342
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Core i5-661
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2:08
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3:35
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3:10
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3:39
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9220
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C2D E7200
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2:47
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3:34
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4:00
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6:10
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7057
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X4 955 BE
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2:27
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3:05
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4:34
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2:52
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9004
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X2 550 BE
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2:34
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3:09
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4:44
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4:54
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7217
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X3 720 BE
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2:47
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3:16
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5:13
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5:08
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7738
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Our timed benchmark tests were chosen to simulate average use, thus the i5-661
performed very well compared to the competition, winning in an anti-virus scanning
race using NOD32, and an audio encoding test using iTunes. Surprisingly, the
i5-661 came close to catching its similarly priced quad core cousin, the i5-750,
when video encoding using TMPGEnc, test which favors quad cores. Even a task
using multiple threads is not a sure-fire win for a quad core over a dual core.
Benchmark Power Consumption
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Average System Benchmark Power Consumption (DC)
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Processor
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NOD32
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WinRAR
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iTunes
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TMPGEnc
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C2Q Q9550
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66W
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77W
|
70W
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92W
|
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Core i5-750
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57W
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61W
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57W
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88W
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Core i5-750 (Undervolted)
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54W
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53W
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56W
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76W
|
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Core i5-661 (Turbo)
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52W
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53W
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55W
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70W
|
|
Core i5-661
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49W
|
50W
|
53W
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69W
|
|
X4 955 BE
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105W
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105W
|
113W
|
138W
|
|
X3 720 BE
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91W
|
90W
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96W
|
107W
|
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X2 550 BE
|
85W
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85W
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87W
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96W
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Total System Benchmark Power Consumption (watt-hours,
DC)
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Test State
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NOD32
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WinRAR
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iTunes
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TMPGEnc
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Total
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|
Q9550
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2.77
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3.83
|
4.14
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4.96
|
15.70
|
|
i5-750
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2.39
|
2.68
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3.61
|
4.91
|
13.59
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|
i5-750 (Undervolted)
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2.27
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2.33
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3.55
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4.24
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12.38
|
|
Core i5-661 (Turbo)
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1.78
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3.09
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2.80
|
4.12
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11.79
|
|
Core i5-661
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1.74
|
2.99
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2.80
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4.20
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11.72
|
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X4 955 BE
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4.29
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5.40
|
8.60
|
6.59
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24.88
|
|
X3 720 BE
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4.22
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4.90
|
8.35
|
9.15
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26.62
|
|
X2 550 BE
|
3.64
|
4.46
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6.86
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7.84
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22.80
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When we combine the i5-661's strong performance in our timed benchmarks with
the average system power consumption during these tests, we find that it not
only finishes tasks quickly, but does so using less total power than any processor
we've tested to date. In terms of total watt-hours used for our entire test
suite, the i5-661 platform was ahead of the i5-750 by 14% and 5% when the i5-750
was undervolted to its minimum stable voltage.
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