Measuring Energy Efficiency
Energy efficient computers are a good thing, so it
helps to know how power efficient, or power hungry different parts of a computer
are when stressed with different tasks. Since it is very difficult to isolate a
videocard or CPU and measure power draw separately, PCSTATS measures total
system power draw with the aid of an Extech 380803 AC Power Analyzer and A-PFC
compliant PC
Power and Cooling 750W power supply. The meter is placed between the 120V AC
outlet and the PC power supply. By stressing the test platform's graphics
solution or processor, it's then possible to measure power draw relative to the
PC at an idle state.
The test system is measured at Idle (Windows
desktop), Graphics Loaded (3Dmark06) and CPU Loaded (Prime 95) states.
|
Total
System Power Draw
 ASUS P7P55D Deluxe |
|
Processor & Graphics
Solution |
Idle
|
CPU Loaded |
|
Intel Core i5 750
nVidia Geforce
GTS250
(Discrete Graphics)
|
124W
|
175W
|
|
(At desktop) |
(via Prime95) | |
Under load the ASUS P7P55D Deluxe motherboard
draws 175W. With a videocard stressed in 3D games expect load to go beyond
250W.
Prelude to Testing
The details of how
the ASUS P7P55D Deluxe motherboard test system was configured for benchmarking; the specific
hardware, software drivers, operating system and benchmark versions is indicated below. In the
second column are the general specs for the reference platforms this Intel P55 Express
based motherboard is to be compared against.
Please take
a moment to look over PCSTATS test system configurations before moving on to the
individual benchmark results on the next page.
 |
| PCSTATS Test System Configurations |
|
test system |
| processor:
|
intel core i5 750 (1156) |
| clock
speed: |
20 x 133 mhz = 2.66 ghz |
| motherboard: |
gigabyte ga-p55-ud6 (p55
express)
gigabyte ga-p55-ud5 (p55 express)
gigabyte
ga-p55-ud3r (p55 express)
asus p7p55d deluxe (p55
express)
asus p7p55d premium (p55 express) |
| videocard: |
asus ENGTS250 DK |
| Memory: |
2x 2GB Corsair CMD4GX3M2A1600C8 |
| Memory
Speed: |
DDR3-1333 |
| Hard Drive:
|
74GB Western Digital Raptor WD740 |
| CDROM: |
ASUS BC-1205PT-BD
Blu-Ray Drive |
| Monitor
(1080p): |
ASUS MK241
24" HD LCD |
| PowerSupply: |
PC Power & Cooling TurboCool
750W |
| Heatsink: |
Intel Reference LGA1156 |
| Software
Setup: |
Microsoft Windows Vista Ultimate 32-bit
Intel
9.1.1.1019
nVIDIA Forceware 190.62 |
| Benchmarks:
|
SYSMark 2007 Preview
SiSoft Sandra 2009
PCMark
Vantage
3DMark06
3DMark
Vantage
FEAR | |
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