1.2THs = 1200GHs
The spec-sheet says...
(20GHs @ 0.35W/GH = 7W) = 1 Chip
1200GHs/20GHs = 60 Chips
60 * 7W = 420W
Respectively... On the top-end...
(40Ghs @ 1.0W/GH = 40W) = 1 Chip
1200GHs/40GHs = 30 Chips
30 * 40W = 1200W
For AMT to state power consumption as 300W-.. is a lie.
With the above two stated setups... The lower one would operate at less than 300W, but not 300W while at 1.2THs speeds.
(20Ghs @ 0.35W/GH = 7W) = 1 Chip
600GHs/20GHs = 30 Chips
30 * 7W = 210W
This same 30 chips can do 1.2THs, but not at 600W. (40 chips possibly, between the two numbers.)
300W/7W = ~44 chips (low)
which would be 44*20Ghs=880GHs on the low 300W
600W/13.6W = ~44 chips (below nominal)
which would be 44*28GHs=1232GHs (1.2THs) on below nominal About 600W
Again, I assume this LIMIT is due to the PSU ability, and heat-dissipation ability. Not a limit of the chip itself. (If 44 is what is used.)
11 boards of 4 chips = 44
8 boards of 6 chips = 48
6 boards of 8 chips = 48
Or mixed, one with 4 or 6 chips, to even it out. For the 48-chip odd arrangements.
Thus, like I said... like every MFG does... They state perfect-world estimated ranges. 40MPG Hwy - 32MPG City, but it never gets that, ever... Thus 300-600W, and the "max speed" may only be 1.2THs. They never said what the low speed is.
They didn't even confirm that the A1 chip is what is being used. (That is what we assume.)
It isn't a LIE, if no-one has it yet. "Specs subject to change". Even then, it isn't a LIE, it is an error. If that is what they were told, then that is what they repeated, as specs. My video cards say 250W, but I have them running at 135W, and have pushed them over 290W. Yet the specs still say "consumes 250W". Which is not "at the wall".
But I agree that the specs seem under-estimated, possibly. (The other components are all low-power, except the PSU and fans. They run off USB-power, so they have to be low wattage.) Another thing they forget to think about, is European power is 240v, which is half the amps, and more efficient than American power at 120v. That will add 15-25% inefficiency to the PSU alone, even a platinum PSU, which is only rated at 90% efficient at 240V, with an 85% load. (Which, by the way, is a LIE, because PSU's never get that efficient.
)
One more month, or two... and we will see the results, in full technicolor detail.
thanks for the explanation isawhim... nonetheless you will not convince that which does not want to be convinced. how does that adage go? you can lead a horse to water but you can't make him drink. puppett and many others on this website are not thirsty. they are trolls plain and simple. they bring nothing useful to the table. they pimp there bias and speculation because they are attention whores, nothing more.