nukepower wrote:well see and they did say at first the A4 was suppose to run @
A4 ASIC: 3Mhs per chip at 3.6W nominal, support DCDC less PCB
Extreme Low Power: daisy chained ASIC running at 0.7V, only in 14nm
Miner Performance: 600Mhs from 720W at the Wall or 850Mhs from 1020W
PSU Requirements: common PCI-E 8Pins/6+2Pins with 12V output
Included: Raspberry Pi running the most user friendly A2 terminator Software
your right the A2 did rock
Yes those pre-production targets were based on the performance of a single chip in the lab, and yes they would have delivered on that promise possibly if they'd opted to use a serial DC design. As we know they didn't and the power consumption was 3x what they promised with the associated increase in heat whihc required lower chip density and less MH/s per miner.
I've got quite a few A4's. They rock too. If you have a fan failure and they get hot, the inbuilt thermal protection kicks in and the card will shut itself down until a full power cycle and the temp has dropped. Try that with an L3.
They may have missed those target specs but try finding one post anywhere where an A4 hashcard has died, they're totally bulletproof.