Well, the others were factory clocked at 550, 600 and 625.  I say the batch 8 was already over clocked at the factory to 700 and should be at 600 like the batch 6 @ 4.05 TH/s with 135 chips.  I have since under clocked the 3 of mine that run hotter than the others to 650.  I'm thinking about lowering them to 600 [Especially, when summer time arrives] for the longevity for the rigs.

SweeeeeeeeeT   

Thank you very much for taking the time to do this, Phillip.

Were you also planning to get the new S7 batch 8 or 9?  I'm curious if it's efficiency would be the same as batch 6 if the batch 8 or 9 were under clocked from 700 MHz to 600 MHz?  It may be I would not have to be concerned with under clocking if the hash rate difference of 700 GH/s pays for the extra 100 watts consumed from the higher clock of 700 MHz in batch 8 & 9.  If the difference of the 700 GH/s more than pays for the extra power consumed to make extra profit, it is worth it.  If they simply offset, it would be better to under clock to try to increase the longevity of the rig.

I'm also curious about efficiency when under clocking with the 2880 & 2980 PSU's without having to use a different PSU to under volt.  This would also help me determine if it will be more cost effective to over clock, keep at stock settings or under clock.  It's important for me to make the right decision for PSU to be used with 200+ S7's in the future.

Thanks for taking the time to do this.  I don't think you realize how much this is helping me.  I'm running numbers for future revenue projections and making necessary decisions on when to move to get access to cheaper power, etc..  My goal is to acquire 200+ S7's by block halving.

Just to make sure we are on the same page:

Batch 6 was factory set at 600 MHz for 4.06 TH/s with 135 Chips
Batch 8 was factory set at 700 MHz for 4.73 TH/s with 135 Chips

Hence the .25 watts versus .3 watts because of Batch 8 clocked at a higher frequency.

My question is, can I under clock Batch 8 down to 600 MHz and get the same .25 watts efficiency as the Batch 6 at 600 MHz?

Biodom or Anyone else,

Help me remember...  Did Batch 6 have 135 chips or 162 chips?  My question was never really answered about number of chips.  I'm curious if I would get similar efficiency with under clocking as Biodom mentions here with Batch 6 but similar with Batch 8?

Thanks again for taking the time to share that, Kano.

All I ask is everyone hang in there no matter what...

Those of you who just started, hang in there till at least 10 days AFTER you've reached very close to your full hash rate under "Your N Avg" to the left of "Your BTC" under the "Rewards" tab.  If you hang around to see the potential of what can be made for 10 days minimum AFTER reaching close to your full hash rate under "Your N Avg," you will find this pool worth supporting.

For those of you just starting, you should not let it concern you if it takes a while to find a block cause you are slowly building up to your full N Avg.  If you were to leave [I hope you don't] you will find yourself continuing to receive payments when blocks are found until your N Average has depleted.

There may be times we go well over 100% shares on a block.  Don't let that discourage you.  It will be made up in due time.

Also, please spread the word about the pool.  It's rare to find a pool that has its developers frequently answering questions and giving updates in the pool forum.  There are many other things discussed in the forum as well that you will find to be educational.

If you invest the time to reach close to your full N Average, I believe you will find it to be a worth while investment of your time after remaining for at least a couple of weeks afterwards.

Thanks again for coming to the pool and giving it a try.

ROLL TIDE and HAPPY NEW YEAR!

David

Yup, now Roll Blocks!  Roll right on into CK/Kano Pool.

ROLL TIDE

Totally agree with the "donations."

That, I don't know.  I have an iPhone.  I'm not sure if it's available for iPhone?

I still see email notifications on my iPhone.

New people, don't miss out on http://ckpoolmonitor.zachmonroe.com

Once you sign up, you will get worker offline notifications to your email; low hash rate notifications to your email; block found notifications to your email; and much more.

SweeeeeeeeeeTnessssssss!   

Is that 1000 RPM on one fan or both fans?  I'm asking this because one of them could be out.  Which means one of them could be fine while the defective one is spinning the other from it's pressure.

kilo17 had rented approximately 1 PH.  His rented hash has dropped off now and his total hash is slowly diminishing.  You see him dropping down in the stats.  He was at the top.

Cheers!

Yep, just in time before the difficulty change as well.

SweeeeeeeeeeT

Nice quicky!   

Hi Finksy,

Thank you very much for your constructive criticism  Your frankness is much appreciated.  I also appreciate your willingness to contribute HW in Prelude's efforts to determine power efficiency difference between PSU's.  You made very good points about what would probably be the proper way to test PSU efficiency for bitcoin mining applications.  Consistency in HOW the test is performed is extremely important... Making measurements with same meter at same location with same rigs over same period of time.

I hope I did not open up a can of worms.  That was not my intention at all.  I've made too many mistakes in the beginning of my bitcoin mining venture.  I've learned [The hard way] how important it is to make an educated decision about hardware used for mining.  I don't want to continue those mistakes anymore.  I'm hoping this venture will last for many years to come.  So, I'm wanting to make the wisest and most economical decision I can make while growing into the future.

All of the time and energy invested with engineering and design with breakout boards for various PSU's and the commitment to produce these on a relatively large scale for many people by you and J4bberwock is appreciated greatly, Sir!  Thank you both for all you have done and continue to do for the community!