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Green Machine: AMD Dual-Core Platform at 54W

Test Systems

System Hardware
ProcessorsAMD Athlon 64 X2 4600+ EE Model ADO4600IAA5CUAMD Athlon 64 X2 3800+ Model ADA3800IAA5CUAMD Athlon 64 X2 3800+ EE SFF Model ADD3800IAT5CUIntel Core 2 Duo E6400, 2.13 GHz, FSB1066, 2 MB Cache
MotherboardsAsus M2NPV-VM, GeForce 6150, Socket AM2Gigabyte GA-965G-DS3, Intel G965 Express, LGA775
RAMA-Data Vitesta DDR2-5332x 1 GB, CL3-3-3-9
Hard DriveWestern Digital Raptor WD1500ADFD150 GB, 10,000 RPM, 16 MB Cache, SATA/150
NetworkingMarvell Yukon Gigabit PHY, enabled, offline
GraphicsGeForce 6150 Integrated, 128 MB (AM2)Intel G965 Integrated, Dynamic Memory Allocation (LGA775)
Power SupplyOCZ ModStream OCZ52012U - 520 W modular
System Software & Drivers
OSWindows XP Professional 5.1.2600, Service Pack 2
DirectX Version9.0c (4.09.0000.0904)
Platform DriverNvidia nForce C51/MCP51 Chipset Driver V8.24 (AM2)Intel INF 8.1.0.1006 (LGA775)
Graphics DriverNvidia GeForce 61X0 Display Driver V8.2.0.5Intel Graphics 6.14.10.4642

Benchmark Results

Energy Efficient Athlon 64 X2 models provide exactly the same performance as standard voltage versions, allowing us to refer to our Interactive CPU Charts for performance comparisons. This also lets us to limit the scope of this article to measuring power consumption at maximum and minimum CPU load, using our Prime95 torture test.

Power Consumption Test Setup

Extech's model 380803 power analyzer was used for both platforms. The remaining configuration was based on parts available at our new lab in Culver City.

The Asus M2NPV-VM uses Nvidia's GeForce 6150 chipset for ultimate power savings with onboard graphics. A PCI Express x16 slot enables the use of higher performance graphics cards when desired.

The Gigabyte GA-965G-DS3 works with Intel's latest G965 chipset to provide power savings to Core 2 Duo processors, again offering a PCI Express x16 graphics upgrade path.

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Thomas Soderstrom
Thomas Soderstrom is a Senior Staff Editor at Tom's Hardware US. He tests and reviews cases, cooling, memory and motherboards.