Increasing Efficiency on S1

[catoboli]

I was curious if anyone knew anyway of increasing the power to GH ratio on the S1 miners. its getting to the point where I've stopped overlocking but i still need to do better. Id like to get them where the margin is profitable. I feel like I've herd of changing the voltage. I know they can be more efficient because they are the same chip thats in the s2 which has a much better power to GH ratio.

Any Ideas?

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[7queue]

This?

https://bitcointalk.org/index.php?topic=526060.0

8 )

[CounterStrike]

I was curious if anyone knew anyway of increasing the power to GH ratio on the S1 miners. its getting to the point where I've stopped overlocking but i still need to do better. Id like to get them where the margin is profitable. I feel like I've herd of changing the voltage. I know they can be more efficient because they are the same chip thats in the s2 which has a much better power to GH ratio.

Any Ideas?

Underclock and you can pretty much get about 1GH/1.1Watt..

[catoboli]

Under clock or under volt?

[Collider]

Under clock or under volt?

Both, as with lower voltage your chips will not be able to sustain the same clock frequency.

[catoboli]

Ill give that a try, I know when you under volt you have to declock but wasn't sure if you could get good performance just by under clocking, id rather just under clock than under volt. more complicated process. and i don't know wtf i put my voltmeter its been a long time since I've needed it.

[DrG]

Ill give that a try, I know when you under volt you have to declock but wasn't sure if you could get good performance just by under clocking, id rather just under clock than under volt. more complicated process. and i don't know wtf i put my voltmeter its been a long time since I've needed it.

Yes underclocking is easier since it just involves changing the speed.  The resulting decrease in power is usually linear - if you go down 30% in speed you see about 30% decrease in power.

By undervolting the chips are usually not able to run as fast so they would require an underclock as well and require a little fiddling to find a stable maximum speed but a 30% reduction in power would be significantly less - closer to 50-60% decrease in power due to the fact power is the square of the amperage.