Bitmain Antminer S3

"BM1382 represents a 20% power saving on its previous generation of 55nm chips"

 

Chip specs: BM1382

 

Process Node: 28nm

Package Type: FCQFN-56

Packaged Chip Size: 8mm x 8mm

Number of Cores: 63

Core Voltage: 0.75 V

Core Frequency: 250 MHz

Hash Rate: 15.75 GH/s

Power Consumption: 0.59 J/GH (chip level, and it can be lower to 0.40J/GH by lowering the core voltage)

 

Source: bitcointalk.org/index.php?topic=656461.0

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