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Topic: My 1 gpu now 11gpus 5rigs for Ethereum. 45 days of mining. Photos thoughts. - page 16. (Read 50633 times)

legendary
Activity: 1834
Merit: 1080
---- winter*juvia -----
is it worth to make an rig next month? i pay about 0.08 cents per kw/h

you should roi in 3 months, assuming diff stay the same, and assuming your build will cost around $2k(6x390)

sounds about right, plus you will have resale value of 6 390s, which shouldnt be too bad even if the new cards come out.  and after that its the end of ETH probably (for mining), but there will be more coins to mine Smiley

The PoW could finish later than expected. At first, we heard it is early next year, but it is delayed.


so after POW -- the POS (no mining) --- then it will be mining again after POS? like BTC?
legendary
Activity: 4326
Merit: 8950
'The right to privacy matters'
i tried undervolting a stock 480 using wattman and its allowed me to underclock only -33 mV

is this normal?

on my Nano, using Afterburner, I can get -100mV or -96mV

not the same unit of measurement.

-33 on watt man is a percentage

-33 on afterburner is mv

legendary
Activity: 3248
Merit: 1070
is it worth to make an rig next month? i pay about 0.08 cents per kw/h

you should roi in 3 months, assuming diff stay the same, and assuming your build will cost around $2k(6x390)

sounds about right, plus you will have resale value of 6 390s, which shouldnt be too bad even if the new cards come out.  and after that its the end of ETH probably (for mining), but there will be more coins to mine Smiley

he can actually roi much faster if he sell his right or even take a big profit, from it
legendary
Activity: 1834
Merit: 1080
---- winter*juvia -----
i tried undervolting a stock 480 using wattman and its allowed me to underclock only -33 mV

is this normal?

on my Nano, using Afterburner, I can get -100mV or -96mV
hero member
Activity: 2926
Merit: 657
No dream is too big and no dreamer is too small
is it worth to make an rig next month? i pay about 0.08 cents per kw/h

you should roi in 3 months, assuming diff stay the same, and assuming your build will cost around $2k(6x390)

sounds about right, plus you will have resale value of 6 390s, which shouldnt be too bad even if the new cards come out.  and after that its the end of ETH probably (for mining), but there will be more coins to mine Smiley

The PoW could finish later than expected. At first, we heard it is early next year, but it is delayed.
legendary
Activity: 4326
Merit: 8950
'The right to privacy matters'
Tmdz,

I will take a look at the riser, that sounds similar to my story. Either way, I am glad I'll be getting away from risers. I hear not so flattering things about them. I have the cards spread across multiple machines until the new rig comes.

Risers suck..  I mined with a ton ( 21-24 at 6kwatts)    of btc gpu's back in 2012.  cards pulled more power then and riser were really not reliable.

that Biostar mobo is very interesting.... is there a good 5 x PCI version?

so far four is the biggest I can find.
legendary
Activity: 2294
Merit: 1182
Now the money is free, and so the people will be
is it worth to make an rig next month? i pay about 0.08 cents per kw/h

you should roi in 3 months, assuming diff stay the same, and assuming your build will cost around $2k(6x390)

sounds about right, plus you will have resale value of 6 390s, which shouldnt be too bad even if the new cards come out.  and after that its the end of ETH probably (for mining), but there will be more coins to mine Smiley
legendary
Activity: 1834
Merit: 1080
---- winter*juvia -----
Tmdz,

I will take a look at the riser, that sounds similar to my story. Either way, I am glad I'll be getting away from risers. I hear not so flattering things about them. I have the cards spread across multiple machines until the new rig comes.

Risers suck..  I mined with a ton ( 21-24 at 6kwatts)    of btc gpu's back in 2012.  cards pulled more power then and riser were really not reliable.

that Biostar mobo is very interesting.... is there a good 5 x PCI version?
legendary
Activity: 3248
Merit: 1070
is it worth to make an rig next month? i pay about 0.08 cents per kw/h

you should roi in 3 months, assuming diff stay the same, and assuming your build will cost around $2k(6x390)
legendary
Activity: 4326
Merit: 8950
'The right to privacy matters'
Tmdz,

I will take a look at the riser, that sounds similar to my story. Either way, I am glad I'll be getting away from risers. I hear not so flattering things about them. I have the cards spread across multiple machines until the new rig comes.

Risers suck..  I mined with a ton ( 21-24 at 6kwatts)    of btc gpu's back in 2012.  cards pulled more power then and riser were really not reliable.
full member
Activity: 239
Merit: 250
is it worth to make an rig next month? i pay about 0.08 cents per kw/h

$0.08 /kWh is good price. If you buy the 6x R9 390 and a mother board with 6 PCIE slots, you might ROI.
hero member
Activity: 615
Merit: 500
Tmdz,

I will take a look at the riser, that sounds similar to my story. Either way, I am glad I'll be getting away from risers. I hear not so flattering things about them. I have the cards spread across multiple machines until the new rig comes.
legendary
Activity: 4354
Merit: 3614
what is this "brake pedal" you speak of?
phil

you dual mine decred with any of those rigs? I didnt initially as it adds about 35-40 watts per 390 but right now the plan is Ill just sell the decred to offset power costs, and will keep the eth for the time being.

I started with one sapphire nitro r9 390 on the daily driver (nitro is very quiet cant even hear it @ 50% fan in a NZXT H2 case), then resurrected an old btc miner and put another nitro 390 in it. that one is open air with suspended cards in the basement. now a sapphire r9 380 ITX is on its way and im hunting for a cheap 370 to finish the basement rig (only 3 pcie slots and a seasonic x750, so thats about all it can take). basement rig runs ubuntu 15.10.

plan to xfire the 390s in my next game build, the 380ITX goes into my HTPC later, the future r? 370 will be spare. so instead of selling rigs (nice plan) I plan to just reuse the cards after eth mining is no longer profitable.

hero member
Activity: 1008
Merit: 1000
LoneRangir:

Are you sure the riser is good?

I had a problem with a riser that seemed fine and I wasted a ton of time dealing with it.  The result was the machine would not go to POST but I could get it to boot if I plugged the riser into the x1 slot instead of a x16 but then under mining the driver would fail after 20-45 mins. (3 gpu machine btw)

The riser has a thin solder bridge on one of the pins on the back so I cut it with my knife.  Now It works fine and I have been mining for about a week straight on this rig.  Something to take a look at, just remember it will be a little hard to spot.
member
Activity: 72
Merit: 10
is it worth to make an rig next month? i pay about 0.08 cents per kw/h
legendary
Activity: 4326
Merit: 8950
'The right to privacy matters'

Missed it oh well,  thanks for the post.

@ red rose   1060 is good   As is rx 480.

Just do one or the other on that same board.
hero member
Activity: 615
Merit: 500
you setup is wrong somehow.

I don't necessarily disagree with you, but I spent A TON of time re-configuring this rig in any which way that would post.  I used the onboard graphics, I used one of the 480s, I used the other 480, I used all ports of the HDMI/DP, I moved the PCIe speed down to Gen2, Gen1, up to Gen3, auto....  I tried alot of of things!

The only thing that is stable is to set Gen3 and only use 2 of the PCIe (x16) connectors.  Any time I added a third card via an x1 powered riser, no boot...

My time (and sanity) is worth something.  I went with the Asrock Racing board noted below.  Maybe I gave up too early, but I was out of ideas.

An older chipset like you reference will only go Gen2 speeds.  Perhaps that chipset/BIOS can handle 3 to 4 cards.  Mine could not....
legendary
Activity: 3444
Merit: 1061
I have just installed a new distribution board for my workshop.

I have 63Amp/3-phase/240v to play with and I would like to have some form of metering so that I know I don't exceed 48amp per phase. My electrician told me that a simple "clamp meter" will do. He recommended me some China branded meter and I was thinking of a better solution...

Any recommendations? In amazon, I see many types from 20 bucks to hundreds of dollars for brands like Fluke etc.

Wish list... can the meter be displayed to an external LCD screen?

clamp meter was one of the tools i bought when i started mining..mine was a not so fancy 40$ range newstar brand and it is still fine after 2 years..

if you want to get fancy and have an external lcd screen always displaying information , you might want to use a wattmeter that displays amps,volts,watts and consumption (everything is there already)

personally i don't see an advantage of always displaying the current in the wire, as long as you know the wire cannot be overloaded by the load..it is only knowing what's up with the load, sometimes i simply touch the wire and think "is it getting warm?"
legendary
Activity: 4354
Merit: 3614
what is this "brake pedal" you speak of?
Things have now regressed. I think my Mobo and CPU are struggling to boot all 3 cards. I have an older Z87 chipset and i7 875k CPU. It will not consistently recognize the cards. PCIe speeds are suspect at this point. I have to manually set Gen3 speed. It will not accept auto detect, nor and speeds below Gen3

i assure you a properly set up and bog stock, comparatively weak by todays standards cpu like an q6600, has NO problem with a r9 390 and r9 380 with a hd6870 mining crypto. and it gets 21 mhs and 31 mhs at eth, which is exactly right with others gpus. oh and plus sia and decred as dualies

you setup is wrong somehow.
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