3
Principled Technologies, Inc.: Energy consumption of seven Intel chipset motherboards
Test results
Figure 5 presents energy consumption measurements (the median of three or five runs for each test) for the
systems with the seven motherboard models. (In the event of a tie, we chose the run with the higher energy
consumption. If the energy consumption score was also tied, we then chose the first run we executed with those
scores.) Because energy consumption results represent the energy the systems used when completing the
workload, lower is better.
We used the Extech Instruments 380803 Power Analyzer to gauge energy consumption. The Extech Power
Analyzer is an external unit that connects to a host computer through a RS-232 communications cable. The
device also has an AC power cable that powers the system under test. We used the Extech Power Analyzer to
monitor the average AC energy consumption of each system while running the four custom tests. We then
multiplied the Extech’s average AC power score by the time the workload took to complete to calculate the
Workload Energy Consumption (WEC) in watt-seconds. We divided the WEC watt-seconds score by 3,600 (the
number of seconds in an hour) to calculate the WEC Watt-hours we report below. The Idle and Web browsing
tests ran for a fixed amount of time (five minutes) while the other tests ran as long as necessary to complete the
task.
Test
Asus
P5B-VM
SE
Asus
P5E-VM
DO
Asus
P5K-VM
Gigabyte
GA-
G33M-
S2L
Intel
DQ35JOE
Intel
DQ45CB
Intel
DQ45EK
Idle for five minutes 5.88 5.14 4.97 4.73 4.66 4.18 4.22
Web browsing for five minutes 6.13 5.48 5.20 4.97 4.99 4.51 4.55
Microsoft Office Excel 2007
Monte Carlo Black-Scholes
1.22 0.88 0.89 0.88 0.90 0.87 0.86
Microsoft Office Word 2007
creating a PDF while running
a Windows Defender Custom
Scan
0.39 0.30 0.28 0.27 0.27 0.26 0.19
Figure 5: Energy consumption in watt-hours for the seven test systems. Lower numbers are better.
Test methodology
This section discusses some differences in the configurations of the test systems, and details the methodologies
we followed in testing them. We ran the tests three or five times, and report the median of those runs.
Configurations
PT purchased and built each system as identical as possible with the only difference being the motherboards.
Each system consisted of:
• Intel Core 2 Duo Processor E8600 (3.33GHz, 1333MHz FSB, 6MB L2 Cache). (Note that the Asus P5B-
VM SE motherboard would only run the Intel Core 2 Duo E8600 processor at 2.66GHz with a FSB of
1066MHz)
• Corsair XMS2 2GB 240-pin DDR2 PC2-6400 CL=5
• Seagate ST3320620AS Barracuda 320 NCQ SATA2 7200RPM
• Lite-On DH-16D3S SATA DVD-ROM
• Linkworld 536-09-c2228u ATX Mid Tower Computer Case with 430W power supply
For detailed system configurations, see Appendix A.
Initial setup
To get the most accurate and repeatable results possible, we started with a clean hard disk, and set up all the test
systems using the following procedures.
Installing Microsoft Windows Vista Ultimate with Service Pack 1
Use the following process to install and configure a clean version of Windows Vista Ultimate SP1 on each system:
1. Enter the BIOS of each system and make sure:
a. The processor is running at the correct speed.
(108 páginas)
(79 páginas)
(26 páginas)
(38 páginas)
Manymanuals.com
Manymanuals.de
Manymanuals.fr
Manymanuals.it
Manymanuals.pl
Manymanuals.cz
Manymanuals.es
Manymanuals-pt.com
Comentários a estes Manuais