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Author Topic: 5830 x 4 Mining Rig, When to call it quits?  (Read 8759 times)
BitCointransfers
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June 28, 2011, 08:35:38 PM
 #1

Hey guys, I've been mining 24x7 for the last month and a half at about ~ 1207.00 MH/s with 4 x5830's and an 850Watt Supply.  My power cost here is 8.5 cents/kWh.  With these inevitable complexity increases when do you think I should call it quits?
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Reckman
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June 28, 2011, 08:38:13 PM
 #2

Your still making good profit, but your hardware will be worthless if you wait esp 5830s b.c they have no use besides mining, gamers are not buying them...

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June 28, 2011, 08:45:49 PM
 #3

simple....when your electricity bills come to more than you're mining !!!!!!!!!!!!!!!!!!
nazgulnarsil
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June 28, 2011, 08:57:16 PM
 #4

around 4 million difficulty with no further price increase is my cutoff point.

But I'll continue to mine through the winter even if we surpass that since I need the heat.  Next summer I will shut down.
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June 28, 2011, 09:45:33 PM
 #5

"When to quit mining" -- that's a personal decision.

How much money would you have to earn to make mining worth it?

It's not a silent cash cube that spits out dollar bills every so many hours. It's a noisy, hot PC that has periodic problems (overheating, etc.) and needs regular check-ups/maintenance (cleaning the fans that run 24/7 before your PC is choked with dust)

You need to make sure the miners are always running, etc.

And of course you have to worry about selling the BTC, and turning it into something you can use/spend.

And you ARE taking the full attention (as in, 100%) of a $500 PC running 24/7 to get $X per week. You can't play games on it, for example.

Yes, altogether it's not that big of a deal, but it might be considered "not worth it" if, say, you were only making $10/week. Others might go through all that for $5/week -- it depends on the person.
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June 28, 2011, 09:50:05 PM
 #6

around 4 million difficulty with no further price increase is my cutoff point.

But I'll continue to mine through the winter even if we surpass that since I need the heat.  Next summer I will shut down.

haha I posted something about seasonal mining elsewhere.  In the summer you have to pay for cooling, but in the winter mining rigs end up subsidizing your heating costs  Cheesy
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June 29, 2011, 12:13:53 AM
 #7

around 4 million difficulty with no further price increase is my cutoff point.

But I'll continue to mine through the winter even if we surpass that since I need the heat.  Next summer I will shut down.

This.

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bcpokey
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June 29, 2011, 03:49:53 AM
 #8

around 4 million difficulty with no further price increase is my cutoff point.

But I'll continue to mine through the winter even if we surpass that since I need the heat.  Next summer I will shut down.

haha I posted something about seasonal mining elsewhere.  In the summer you have to pay for cooling, but in the winter mining rigs end up subsidizing your heating costs  Cheesy

Indeed. I really wish I had found out about bitcoin a few months earlier, not only because I'd be flush with so many bitcoins I'd be swimmin in em, but because we had one of the most brutally cold winters in my states history riiiight before I turned my room into an oven (I literally warm my whole house when I ventilate the heat to home). Shame not all things work out as we might like them heh.
Rob P.
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June 29, 2011, 12:36:18 PM
 #9

haha I posted something about seasonal mining elsewhere.  In the summer you have to pay for cooling, but in the winter mining rigs end up subsidizing your heating costs  Cheesy

Not only do you have to pay for cooling, but in most states the kWH charges are HIGHER in the summer than than the winter.  This is true in Ohio (I have an additional per kWH Summer charge).  So, you gain twice in efficiencies when mining in the winter:  lower heating bills (sorta), and a lower kWH charge.

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June 29, 2011, 01:19:05 PM
 #10

My guess is difficulty will outpaced by price increases in the long term

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June 29, 2011, 05:24:16 PM
 #11

FWIW:  4 5830s, all the trimmings on 2 mobos, plus additional fan, all in at 810W full bore.

$2.50 / day in costs
$12.50/ day in revenue
$10 / day in profit

I'll be mining for a while

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June 29, 2011, 06:19:14 PM
 #12

This just tells you. Do not keep your mining rig in a room with ac. Electricity bill will make you cry. During winter(depends where you live), if you only have electrical heating, you might be able to heat your house with mining rigs and thus get the power for free".

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koopa
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June 29, 2011, 07:29:09 PM
 #13

Hey guys, I've been mining 24x7 for the last month and a half at about ~ 1207.00 MH/s with 4 x5830's and an 850Watt Supply.  My power cost here is 8.5 cents/kWh.  With these inevitable complexity increases when do you think I should call it quits?

Hey, Whats the full spec on your rig? I have two 5830's right now and was thinking of adding another two into my pci-e 1x slots, using pci-e extension cables and four Molex to pci-e  power adapters. But I'm worried that my 800w Corsair PSU might not be able to pump out enough juice for that.

Everything else in my rig is pretty low power, sempron 140, 2gb ram, low power hard drive etc.

Grin
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June 29, 2011, 07:40:04 PM
 #14

I'm not 100% sure but I think 800 wats might initially sustain 4 5830's but power supplies do degrade over time so after running 24/7 for awhile I'm sure it wont be able to handle it.
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June 29, 2011, 08:04:37 PM
 #15

No way a 800w will handle 4x5830

5830s take up 188w each about, OC'd they can take up 250w

Even 3 will be cutting it close OC'd but will be alright so as long as you aren't running anything else high power.

For 4 I would get at least a 1000w PSU. I'd go with a 1200w just to have more headroom personally.
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June 29, 2011, 08:05:20 PM
 #16

I'm not 100% sure but I think 800 wats might initially sustain 4 5830's but power supplies do degrade over time so after running 24/7 for awhile I'm sure it wont be able to handle it.

Depends on the quality and brand.
The higher series Corsair, Seasonic and Silverstone PSU's practically last forever even at high load due to the very long-aged components under the hood, unless you drive over it with a bulldozer.

The "downside" is that they cost $200-$300, more than some casual users' entire rigs.

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koopa
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June 29, 2011, 08:16:14 PM
 #17

No way a 800w will handle 4x5830

5830s take up 188w each about, OC'd they can take up 250w

Even 3 will be cutting it close OC'd but will be alright so as long as you aren't running anything else high power.

For 4 I would get at least a 1000w PSU. I'd go with a 1200w just to have more headroom personally.

Hi,

But OP says they have 4 x 5830's OC'd with an 850w psu which is why I want to know OP's full spec...

Grin
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June 29, 2011, 08:21:42 PM
 #18

NOW  Grin

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June 29, 2011, 09:02:28 PM
 #19

I ran 4x 5830 on a 850w with no problem, Only pulled 708w from the wall.

"No way a 800w will handle 4x5830

5830s take up 188w each about, OC'd they can take up 250w

Even 3 will be cutting it close OC'd but will be alright so as long as you aren't running anything else high power.

For 4 I would get at least a 1000w PSU. I'd go with a 1200w just to have more headroom personally."

188w is the MAX TDP, not the actual power consumption. When you downclock the memory, each of my cards consumes only ~175w, leaving ~150 on my 850w to power everything else (more than enough).

http://fxnet.bitlex.org/?ref=1141
1C2AUjVqnY4TMC9D7ZGQ4aPurbLrLz2q2g
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June 29, 2011, 09:54:01 PM
 #20

As I said above, I'm running 4 5830s, two 850W PSUs, 2 CPUs, 2 Motherboards, an LCD Display, and an aux fan.  I'm pulling 810W for everything from the wall.

An 850W PSU will run 4 5830s, a single CPU, and RAM, no problem at all.

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