1482
|
Bitcoin / Hardware / Re: Be aware of Butterfly Labs Miners
|
on: July 11, 2013, 07:48:22 AM
|
I speak from experience when I say my Kill-a-watt measured the Jallys at ~35W, and the SC Singles at 260W.
Nice. I should have bought another 4 jallies back in the days. Which altcoins do you suggest?
The ones that I currently working on are TRC and PPC. You can check the profitability between different altcoins here http://www.coinwarz.com/cryptocurrencyThanks
|
|
|
1484
|
Bitcoin / Hardware / Re: Block eruptor blade voltage requirements?
|
on: July 11, 2013, 06:13:59 AM
|
I'm curious about the 12v input on the blades. It says 12v 10a, but what is the voltage tolerance? Can they be hooked directly to a battery at ~13v? Can they handle 14v, or 11v and function normally?
I'd expect the regulators to have some tolerance built in, but does anybody know from experience what it is?
Depends on the design of the buck converter. But that;s not the way to overvolt / undervolt though
|
|
|
1488
|
Bitcoin / Hardware / Re: [ANN] US/North American Bitfury sales now open
|
on: July 10, 2013, 08:54:07 AM
|
I can't support you if you buy from another customer, sorry. It just gets to be too much to try to handle it. If you come to an agreement its between you guys. It causes a problem if you want to return it, or especially if you want to get refunded. The guy you bought it from won't hold onto your money for you...probably a one-way sale.
[EDIT] I won't ship to you directly either. Product has to go first to my customer who then has to ship it to you. Hope you guys understand...sorry about your head gasket, that shit never happens with good timing.
Totally understand Dave i will retract my offer and continue as normal and just have to suck it up and smash my creditcard harder in debt Bad timing indeed, my last car was a mitsibishi Evo 7 blew a conrod out the block now that is bad luck, well dosent help when your almost at 30psi of boost, Kaboooom I love Evo handling. But GT-R is my new fav
|
|
|
1490
|
Bitcoin / Legal / Re: Is Buttefly Labs breaking the law?
|
on: July 09, 2013, 10:25:41 PM
|
I asked for a refund on June 27th and just received email confirmation from BFL that they were processing the refund today. I haven't seen it hit PayPal, but I presume that will happen over the course of the next few days. Once that happens, I'll cancel my CC chargebacks.
While I've seen others get less than stellar customer service, other than a bit of a delay in the response, I personally haven't had any problems.
What's your approximate order date? Thanks
|
|
|
1492
|
Bitcoin / Hardware / Re: 40 nm ASIC coming, designed by those claiming to be behind the scene of Avalon
|
on: July 09, 2013, 07:36:11 PM
|
That's 135 boxes inside those 24 cases. Since each case can hold up to 6 boxes, 6 times 24 cases is 144 boxes so some of those cases are not full cases. So if each box can hold up to 2600 chips that means there are 351,000 chips on that skid. There are more than million chips :O. Each box holds 6 x 2600 = 15600 chips And 15600 times 24 cases is................. 374,400 but since the tracking says 135 boxes I am willing to bet there are some cases with less than 6. I meant small box contains 2600 chips. So big box has 6 small boxes. And 135 big boxes. So I guess total chips <= 2600 * 6 * 135 = 2,106,000
|
|
|
1496
|
Bitcoin / Hardware / Re: Avalon ASIC users thread
|
on: July 08, 2013, 09:12:36 AM
|
I cracked it! Hitting 120GH on a 3 module now Surely you're pulling our leg. 450 is the max clock rate which puts a 3 module somewhere around 100GH. If not, do spill your secret. Spent all of yesterday going through the firmware code, there is a trick people are missing. Uses some information from the github as well. I rechecked the schematics, I doubt it's got something to do with voltage mod, since the voltage regulator is a fixed one. That leaves coding trickery somewhere, unless I have grossly misunderstood something somewhere.
|
|
|
1498
|
Bitcoin / Hardware / Re: Add avalon module ?
|
on: July 08, 2013, 08:34:11 AM
|
If you have a 3 module unit can you add the 4th unit? I know ASIC chips are going around but i have a feeling you need more than raw chips.
you can add another module. There is a slot for another module in the unit as well a connector on the controller card. you need to upgrade PSU, 1KW is recommended.
|
|
|
1500
|
Bitcoin / Hardware / Re: Experimenting with Jalapeno firmware...
|
on: July 06, 2013, 11:18:15 AM
|
I just got through spending most of the day messing with the jalapeno. I made a custom peltier assembly and a temperature controller that regulated the temperature to around 65-68 F. I didn't want to go colder due to risk of condensation. I also modified the firmware to make the same changes as ckolivas did in his, except you can just comment out in std_defs.h... #define __RUN_HEAVY_DIAGNOSTICS_ON_EACH_ENGINE ...and it should have the same effect. I also reduced #define __TOTAL_DIAGNOSTICS_RUN 10 ...down to just 1. After these changes, I was able to get 30 engines running from 28 previously. I also increased the voltage from 1.016v to 1.047v by changing the resistor at R11 to 7.5kohm. This resulted in the chips automatically clocking to a higher frequency. At frequency index 7, I was previously attaining 291MHz/271MHz on the chips. After the voltage increase, it was clocking at 305MHz/291MHz. After these changes, my hash rate went up from ~8.2 to 8.3 GH/s at frequency index 7, to ~8.85 GH/s. I was able to achieve ~9.05 GH/s with index 8 (~4.5% errors), and ~9.23 GH/s with index 9 (~7.5% errors). Unfortunately, the peltier assembly didn't seem to have much effect on the error rate. I put the old heatsink on and it handled the heat just fine. The only thing the peltier was good for was getting a high initial frequency setting. With the peltier drawing ~90w, it wasn't really worth it to continue using. Right now I'm running frequency index 8 @ 8.93 GH/s (~2.6% errors). It is possible for me to go higher at that index, but that was when I was using the peltier. I stuck the unit in the freezer, but I guess I didn't get lucky. Some pictures of the peltier assembly... Thank for the notes and your cool experminent
|
|
|
|