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Lenovo IdeaCentre B305 40311PU (Athlon II X4 review: Lenovo IdeaCentre B305 40311PU (Athlon II X4

Review Sections

Juice box
Lenovo IdeaCentre B305 40311 Average watts per hour
Off (60 percent) 0.47
Sleep (10 percent) 2.27
Idle (25 percent) 59.2
Load (5 percent) 92.22
Raw kWh 225.16
EnergyStar compliant Yes
Annual energy cost $25.56

Annual power consumption cost
Lenovo C315
$19.24 
Lenovo IdeaCentre B305 40311PU
$25.56 

The Lenovo's power consumption actually ran higher than we expected given its slow performance. From a pure efficiency standpoint, that's disappointing. In real dollar terms, we don't suspect many of you will find the difference between the Gateway's $16.89 annual cost and the Lenovo's $25.56 cost hard to bear.

Lenovo's service and support policies hold to the near-universal industry standard of one year of parts and labor accompanied by a 24-7 toll-free tech support number. You can add at-home service and extended warranty coverage if you purchase your system online from Lenovo directly. You will find basic drivers and documentation on Lenovo's support site, but we wish the site gave you more direct access to the product-specific information.

Find out more about how we test desktop systems.

System configurations:
Acer Aspire Z5710
Windows 7 Home Premium SP1 (64-bit); 3.2GHz Intel Core i5 650; 4GB 1,333MHz DDR3 SDRAM; 128MB (shared) Intel GMA X4500 HD integrated graphics chip; 1TB 7,200rpm Western Digital hard drive

Gateway One ZX6900-01e
Windows 7 Home Premium SP1 (64-bit); 2.93GHz Intel Core i3 530; 4GB 1,333MHz DDR3 SDRAM; 64MB (shared) Intel GMA X4500 integrated graphics chip; 640GB 7,200rpm Western Digital hard drive

Lenovo IdeaCentre B305 4031PU
Windows 7 Home Premium SP1 (64-bit); 2.2GHz AMD Athlon II X4 600e; 4GB 1,333MHz DDR3 SDRAM; 512MB ATI Radeon HD 5450 graphics chip; 640GB 7,200rpm Western Digital hard drive

HP TouchSmart 300-1120
Windows 7 Home Premium SP1 (64-bit); 2.7GHz AMD Athlon X2 235e; 4GB 1,333MHz DDR2 SDRAM; 256MB (shared) ATI Mobility Radeon HD 3270 integrated graphics chip; 750GB 7,200rpm Western Digital hard drive

Lenovo C315 40221GU
Windows 7 Home Premium SP1 (64-bit); 1.6GHz AMD Athlon II X2 250u; 4GB 800MHz DDR2 SDRAM; 512MB ATI Mobility Radeon HD 4530; 500GB Seagate hard drive

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