AMD Phenom II X2 550 BE & Athlon II X2 250

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Performance

Benchmark Comparison
Test
E7200
X2 250
X2 550
X3 720
NOD32
2:47
3:35
2:34
2:47
WinRAR
3:34
4:03
3:09
3:16
iTunes
4:00
5:36
4:44
5:13
TMPGEnc
6:10
5:11
4:54
5:08
PCMark2005
7057
6545
7217
7057

The Phenom II chip was between 5% and 28% faster in our tests (average of 16%) compared to the Athlon II. As the X2 550 is clocked only 100 MHz higher, the 6MB of L3 cache is likely what gave it such a sizable performance advantage.

The E7200 beat the X2 250 in all tests except video encoding using TMPGEnc — it was on average 10% faster. Compared to the X2 550, it is marginally slower, about 5% on average. The higher clocked E5300 or E7300 would be a closer match for the Phenom II chip.

Average Benchmark Power Consumption
Test
E7200
X2 250
X2 550
X3 720
UV*
Stock
UV**
Stock
NOD32
70W
85W
88W
106W
112W
WinRAR
74W
87W
93W
105W
111W
iTunes
72W
90W
98W
108W
118W
TMPGEnc
79W
99W
115W
117W
118W
130W
*Athlon II X2 250 undervolted from 1.325V to 1.175V.
**Phenom II X2 550 undervolted from 1.275V to 1.1875V.

As expected, the average power consumption for both the new AMD chips during our timed tests was much higher than the E7200. The X2 250 used 13-20W more, while the X2 550 used 31-39W more. Undervolting helped the X2 250 bridge the gap somewhat, but the X2 550's power figures wouldn't budge.

Benchmark Power Consumption (Watt-hours)
Test
E7200
X2 250
X2 550
X3 720
UV*
Stock
Stock
NOD32
3.25
5.08
5.26
4.53
5.02
WinRAR
4.40
5.87
6.28
5.51
6.04
iTunes
4.80
8.40
9.15
8.52
10.26
TMPGEnc
8.12
8.55
9.93
9.64
11.12
*Athlon II X2 250 undervolted from 1.325V to 1.175V.

When it comes to absolute energy efficiency (i.e. the average AC power used by the system multiplied by the time it took to run each test), the E7200 came out on top once again. Between the two AMD chips, the Phenom II was slightly more efficient — it completed the benchmarks fast enough to offset its higher power consumption. The difference between the two was virtually nil once we undervolted the Athlon II.



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