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Author Topic: Home mining makes a comeback: check out Spondoolies new offer, the Jackson SP20  (Read 4868 times)
raskul
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November 17, 2014, 01:52:10 PM
 #41


Yeah the am prisma crashed and I had no other gear pointed at that pool.

I am not sure I want to keep this prisma it is temperamental.
not good mate.
i'm just waiting on the sparky upgrading the electric phase in our mining hut then I can put my SP10's back to turbo... currently running them at 1.2TH/s on 833w cap each box. 2 dead chips on one of my s3 units at home though... pile of crap chinese cheap shit.

EDIT: did I just say 'cheap'?  Undecided

tips    1APp826DqjJBdsAeqpEstx6Q8hD4urac8a
philipma1957
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November 17, 2014, 04:01:09 PM
 #42


Yeah the am prisma crashed and I had no other gear pointed at that pool.

I am not sure I want to keep this prisma it is temperamental.
not good mate.
i'm just waiting on the sparky upgrading the electric phase in our mining hut then I can put my SP10's back to turbo... currently running them at 1.2TH/s on 833w cap each box. 2 dead chips on one of my s3 units at home though... pile of crap chinese cheap shit.

EDIT: did I just say 'cheap'?  Undecided


 My s-3's have been good.

 But the prisma scares me. I am in NJ , USA It mines in my garage when I open the back door to let in cold air and blow the hot air out temps run well. Once I close the garage door it gets hot. The minera software on the rasp pi is weird the underclocks creep up. in hash in heat and in watts.

My thought was run the prisma at:

 freq 230 garage door open   ---- works great no problems
 freq 200 garage door closed ---- works weird 
 freq 190 garage door closed ---- works weird
 freq 180 garage door closed ---- works weird

the underclocks also work weird if I 
do them with garage door open. 
They don't go slow which means they get hot.

If I can't get it to underclock well  I won't be able to run it when I am not home.


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 MΞTAWIN  THE FIRST WEB3 CASINO   
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.. PLAY NOW ..
Sine(X)
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November 18, 2014, 12:58:29 PM
 #43

I don't think it's fair to compare cloud and hardware.   I think it would be more of the prisma against SP20.  And really amhash is not cloud but a havlock investment.

I agree. Here's a fair comparison:

SP 20:

$900/1700 gh/s = 0.52 $/gh

1280 W/1700 gh/s = 0.75 w/gh

6 Months opex @ $0.1/kwh = $560

6 months opex + capex = $1460 = $859/TH

AM Prisma:

$600/1500 gh/s = 0.4 $/gh

1200 W/1500 gh/s = 0.8 w/gh

6 Months opex @ $0.1/kwh = $527

6 months opex + capex = $1127 = $751/TH

Bottom line: if you want profitability, go with AM. If you want great customer service, go with SP.

You should add parameter "risk of breaking/burning". Of course it's not easy to calculate, nevertheless it's necessary
We have already saw burned Prisma, so it's indeed not trivial question.

I don't say which of SP20 and Prisma is better, it's rhetorical question Smiley
philipma1957
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November 18, 2014, 01:53:22 PM
 #44

I don't think it's fair to compare cloud and hardware.   I think it would be more of the prisma against SP20.  And really amhash is not cloud but a havlock investment.

I agree. Here's a fair comparison:

SP 20:

$900/1700 gh/s = 0.52 $/gh

1280 W/1700 gh/s = 0.75 w/gh

6 Months opex @ $0.1/kwh = $560

6 months opex + capex = $1460 = $859/TH

AM Prisma:

$600/1500 gh/s = 0.4 $/gh

1200 W/1500 gh/s = 0.8 w/gh

6 Months opex @ $0.1/kwh = $527

6 months opex + capex = $1127 = $751/TH

Bottom line: if you want profitability, go with AM. If you want great customer service, go with SP.

You should add parameter "risk of breaking/burning". Of course it's not easy to calculate, nevertheless it's necessary
We have already saw burned Prisma, so it's indeed not trivial question.

I don't say which of SP20 and Prisma is better, it's rhetorical question Smiley

well I did lots of testing and decided to off load the prisma.  I took a loss on it and thats okay since I am a safety first kind of guy and I did not have a location to run it safely.

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 MΞTAWIN  THE FIRST WEB3 CASINO   
.
.. PLAY NOW ..
Sine(X)
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November 19, 2014, 01:03:09 PM
 #45

I don't think it's fair to compare cloud and hardware.   I think it would be more of the prisma against SP20.  And really amhash is not cloud but a havlock investment.

I agree. Here's a fair comparison:

SP 20:

$900/1700 gh/s = 0.52 $/gh

1280 W/1700 gh/s = 0.75 w/gh

6 Months opex @ $0.1/kwh = $560

6 months opex + capex = $1460 = $859/TH

AM Prisma:

$600/1500 gh/s = 0.4 $/gh

1200 W/1500 gh/s = 0.8 w/gh

6 Months opex @ $0.1/kwh = $527

6 months opex + capex = $1127 = $751/TH

Bottom line: if you want profitability, go with AM. If you want great customer service, go with SP.

You should add parameter "risk of breaking/burning". Of course it's not easy to calculate, nevertheless it's necessary
We have already saw burned Prisma, so it's indeed not trivial question.

I don't say which of SP20 and Prisma is better, it's rhetorical question Smiley

well I did lots of testing and decided to off load the prisma.  I took a loss on it and thats okay since I am a safety first kind of guy and I did not have a location to run it safely.

The price can quickly change, power consumption of chip not. No doubt power consumption is MAIN parameter and in such way Spoondolies looks like not bad. Sorry, but 1.0W/Ghs and even 0.8 W/Ghs is not yesterday, but day before yesterday.
philipma1957
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November 19, 2014, 01:44:41 PM
 #46

Well I am waiting on my sp20 and of course it is now not shipped on the 18th but should ship by the 26th

   On the AM side here is  another burnt prisma


To be fair if you read the posts about it he may have gotten the gear too cold. Thus when it started it was like ice to hot and crack a cap

https://bitcointalk.org/index.php?topic=795477.msg9590186#msg9590186





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▀▀███████▀▀
.
 MΞTAWIN  THE FIRST WEB3 CASINO   
.
.. PLAY NOW ..
idecable
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November 19, 2014, 05:54:22 PM
 #47

Well I am waiting on my sp20 and of course it is now not shipped on the 18th but should ship by the 26th

   On the AM side here is  another burnt prisma


To be fair if you read the posts about it he may have gotten the gear too cold. Thus when it started it was like ice to hot and crack a cap

https://bitcointalk.org/index.php?topic=795477.msg9590186#msg9590186






Dang, how cold are we talking about here?
pokeyjones
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November 20, 2014, 03:56:56 AM
 #48

i suppose what it really boils down to is personal preference.
some people are willing to trust their funds in the hands of others with IPO's and what-not and some just enjoy to mine.
I think you are right, amhash is not a real mining operation - it's a smoke and mirrors way of Am getting suckers to invest (again)

i've been away a while so forgive my ignorance, but... have AM yet paid out their shareholders from their last 'IPO' ?

personally, I like buying hardware because it holds resale value - I have resold several times the amount of hardware i can run at a time in my collection, usually for a premium locally over the cost of new hardware.  An S1 might be unprofitable to pay for cloud maintenance, but still has a resale value of $50-80 on a local market, which is significant

How many S1's would you like to buy at 50-80? For that, I'll make your market local.
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December 08, 2014, 11:19:45 PM
 #49

Well I am waiting on my sp20 and of course it is now not shipped on the 18th but should ship by the 26th

   On the AM side here is  another burnt prisma


To be fair if you read the posts about it he may have gotten the gear too cold. Thus when it started it was like ice to hot and crack a cap

https://bitcointalk.org/index.php?topic=795477.msg9590186#msg9590186






Dang, how cold are we talking about here?


Thermal shock OR condensate freezing on the boards. So just below 1c. Almost anything these days with a fan that has Fluid Dynamic Bearings are rated at 0c and above. For the simple reason the fan can actually seize and any electronics will therefore overheat, producing the magic smoke.
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December 09, 2014, 01:36:01 AM
 #50

Thermal shock OR condensate freezing on the boards. So just below 1c. Almost anything these days with a fan that has Fluid Dynamic Bearings are rated at 0c and above. For the simple reason the fan can actually seize and any electronics will therefore overheat, producing the magic smoke.

Are you aware that oils don't freeze at 0C, just because they're liquids?

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