Quote from: defcon23 on December 13, 2013, 06:56:24 AM

Quote from: MrTeal on December 13, 2013, 05:37:47 AM

Quote from: jspielberg on December 13, 2013, 04:53:35 AM

Quote from: Syke on December 13, 2013, 04:34:06 AM

Quote from: jspielberg on December 13, 2013, 03:47:24 AM

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Weve got two dies up on this. Right now we are clocking it at 700mhz and .84v core voltage. Its doing 248Gh/s on only 2 dies! Half a Golden Nonce.

Consumption is around 300 watts total and 78C die temp.

So... we are looking at ~600W total for around ~500GH? Obviously the 25% extra hashrate is nice, but I thought we were expecting the total power to be under 1J/GH.
I guess that isn't going to happen unless we underclock.

Is that just the power consumption at die level? If so, complete system power consumption is going to be significantly higher.

I am assuming that this full consumption. chip is probably pulling 200 of that 300.

400W is getting to be a significant amount of power, to the point where I start to wonder what kind of temperature rise we'll see with a single 120mm radiator and a CLC system. Die temps @ 700MHz with all four active are going to be interesting.

I have to say it's more than a little disconcerting that some of those boards are missing the ASICs and all of them are missing the microcontroller or whatever that chip is they had the AVR32 board wired into. That doesn't seem like volume production to me.

that is good sense.

if it consumes 300 watts for half the dies, then its not likely to simply double it as it goes beyond the chip's thermal envelope... and beyond the cooling capacity of the cooling system...

so.. the voltage will have to be reduced to make it consume less power... which may affect performance.