Quote from: TheRealSteve on February 05, 2015, 11:32:36 AM

Quote from: AJRGale on February 05, 2015, 04:39:46 AM

i'm trying to work out exactly what a "Sapphire" version is, i have 3 working v3's

If it says 'Rev 3.00' on the board, then that's the Sapphire. Beyond that there appear to have been 3 styles of heat sink production runs.

Quote from: friedcat on May 04, 2013, 01:39:52 PM

The Block Erupter USB series is the second major product of Bitfountain. Its experimental batch (Emerald) has passed all tests.

The Emerald Batch
12 in total. Used for internal testing/profiling and gifts for developers.

The Sapphire Batch
This is the first batch under production in quantity. Its lead-time is conservatively 15-20 days.

Which is why I'd be a lot more interested in an Emerald (or other early production)

hmm, 3 styles of heatsink eh? i know of the iodised bitcoin logo'ed heat spreader, and the one with fins on the original, whats the 3rd type?

as for the emerald ones, they have "ver:2" silkscreened on it?