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TEST RESULTS
Our test system is fairly basic, featuring an OEM 80Plus power supply, notebook
hard drive and Blu-ray drive. The CPU is a X2 4850e, a mid-level dual core 45W
processor. It is cooled by a stock AMD heatpipe cooler with PWM fan.
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Test platform.
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Test Results: Asus M3N78 Pro
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Test State
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X2 4850e @ 2.5Ghz
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X2 4850e @ 1.5Ghz
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Mean CPU Use
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Peak CPU Use
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System Power
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Mean CPU Use
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Peak CPU Use
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System Power
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Off
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N/A
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2W
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N/A
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2W
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Sleep (S3)
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N/A
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4W
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N/A
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4W
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Idle
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1%
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2%
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37W
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1%
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2%
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43W
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Rush Hour
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7%
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10%
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~44W
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9%
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12%
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~47W
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Coral Reef
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32%
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44%
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~53W
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41%
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50%
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~47W
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Flight Sim.
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48%
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62%
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~67W
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73%
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92%
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~50W
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Drag Race
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58%
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72%
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~65W
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78%
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88%
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~50W
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CPUBurn
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100%
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93W
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100%
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54W
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CPUBurn + ATITool
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100%
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102W
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100%
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62W
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X2 4850e @ 1.5Ghz undervolted to 1.100V, Cool-N-Quiet
disabled
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The M3N78 Pro has excellent power consumption. The system drew a very low 37W
AC at idle. Playback was smooth throughout without any video or audio glitches.
When the IGP was stressed, power consumption went up just 9W. The system also
performed well when we underclocked the CPU to 1.5Ghz. Though lowering the clock
speed resulted in higher CPU usage during video playback, the overall power
draw was much lower. As a pure playback device, the CPU is overkill at 2.5Ghz
— an undervolted, underclocked CPU can do the same job while drawing less
power. The IGP is very capable for video playback, carrying the load if the
CPU is relatively slow.
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Asus M3N78 Pro vs. Gigabyte GA-MA78GM-2SH @ 2.5Ghz
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Test State
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Asus M3N78 Pro
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Gigabyte MA78GM-S2H
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Mean CPU Use
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System Power
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Mean CPU Use
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System Power
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Off
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N/A
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2W
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N/A
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8W
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Sleep (S3)
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N/A
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4W
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N/A
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9W
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Idle
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1%
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37W
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1%
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38W
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Rush Hour
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7%
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~44W
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2%
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~53W
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Coral Reef
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32%
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~53W
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28%
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~65W
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Flight Sim.
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48%
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~67W
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47%
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~69W
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CPUBurn
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100%
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93W
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100%
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101W
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CPUBurn + ATITool
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100%
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102W
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100%
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109W
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Compared to the Gigabyte GA-MA78GM-S2H with the ATI 780G chipset, the Asus
M3N78 Pro used less power across the board in every test state. With a couple
of exceptions, nVidia's hardware consumed between 7-12W less — very significant
for a low power system. We were impressed with the 780G's low power draw, so
we were surprised and delighted to see this nVidia chipset board top it.
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