Intel's Principal Engineer Francois Piednoël has teased some of the first kinda-official performance numbers of its upcoming Atom Z3770 processor, which is a Silvermont-based Bay Trail implementation running at 1.47GHz.
Francois showed AnandTech some of the numbers running the processor through Cinebench 11.5, providing a score of 1.47. Considering AMD's A4-5000 Kabini-based SoC running at 1.5GHz pumps out a score of 1.5, this isn't too bad at all. The Bay Trail SKU that was tested provides performance close to a 2GHz (or so) mobile Penryn-based Core 2 Duo processor.
This means that this tablet SoC provides performance in a multi-threaded environment that compares with a full-fledged 2010 Apple MacBook Air.