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Author Topic: Tomorrow i buy a gigabyte 5970. What else do i need? Help a noob please!  (Read 2980 times)
GreekBitcoin
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January 31, 2012, 07:27:25 PM
 #1

So i am buying this for 260 euros from a guy. It has 3 years warranty. I think it is quite good. it costs 490 at stores.

I ll also buy the triple fan cooler Accelero Xtreme 5970 for 30 euros. Is it adequate or i need something better?

Now, i dont know what mobo,ram and cpu to buy. Do i need something good? Do you have something to propose? i also have in mind to add another 5970 in future maybe...How is this done?

Anything else about hardware?


Now about mining, i suppose it will get about 700Mh/s .My electricity costs at most 0.13$/KWh but actually half of it will be about 0.10$/KWh. Do you think it worths? At this price i believe i ll be even in 6-7 months.


Anything else? Any guide? Pool? Whatever you would like to add Smiley
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GreekBitcoin
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February 01, 2012, 09:19:47 PM
 #2

bumping since i change it a bit
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February 01, 2012, 11:19:38 PM
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About the 5970s, I've heard that they run very warm and that the vrms get very hot. They are a 300w card so plan for that. People usually go with the cheapest mobo and cpus they can find. Plus a single stick of ram. Amd catalyst drivers limit you to a max of 4 gpus under windows (2 5970s) and 8 under linux (4 5970s). Be careful when applying thermal paste on the if you are planning on replacing the cooler, I'm not knowledgable in this area so someone should be able to elaborate.



For 700 mhash/s (without factoring in electircity):
btc -> usd: 6.10
difficulty: 1307728.3606041

              btc         usd
day:       .538        $3.28
week:     3.769      $22.98
month:   16.387     $99.94
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February 01, 2012, 11:27:38 PM
 #4

Thank you very much for your answer! I now understand that you need to pay the least and use as little as electricity is possible.

But I have seen it is 300-350 watt and i have a question. Is this figure misured at the gpu only or generally the power that the PSU will actually use? If you know what i mean. Because PSUs have about 70% efficiency i think and this isnt good.
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February 01, 2012, 11:32:34 PM
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MB - Get the MSI 890FXA-GD70 MB.  It will allow you to expand to 3x5970 w/o expanders.  Take a look at the board photo until you figure out why.  A board config like that is rare.
CPU - Cheapest sempron (no need for aftermarket cooler) watch out if someone is selling OEM model it has no heatsink.
RAM  -2 GB DDR3 is fine (you likely can get away w/ 1 GB but RAM is cheap grab 2GB).
HDD - None.  Use a 4GB USB drive and LinuxCoin, Ubuntu, or BAMT distro.
PSU - 800 or 1200W 80-Plus Gold (depends on if you want to be able to expand to 2 or 3 cards).  

About power:
Power draw is closer to 230W - 250W per card once you downclock the memory to 150 or 300 Mhz (which you will be wasted electricity is less profits).  You likely don't need an aftermarket cooler (waste of money) if it is reference design (squirrel cage at the end) and you are using open rig.  All my rigs are 3x5970 and they pull 870W at the wall.  Backing out PSU inefficiency that is ~800W DC for 3x5970 plus sempron & MB.  PSU is where you spend your money.  800W is minimum for 2x5970.  1200W is minimum for 3x5970.  Don't even think of anything less than 80Plus-Gold.  Junk PSU = 70% efficient.  80Plus-Gold = ~90% efficient at 75% load (800W DC load on 1200W PSU).

#1 noob mistake is buying shit you don't need and then cutting corners on PSU.  A mining rig lives and dies by good, clean, EFFICIENT power.

If you get all that you can expand to a 2nd and eventually 3rd 5970 (w/ 1200W PSU) using your earned coins.
You should get 730 to 760 MH/s per card.  Nice choice the 5970 is the a mining monster.
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February 01, 2012, 11:33:40 PM
 #6

Power use should be measured at the wall for the whole rig. Buy a Kill-A-Watt. They also come in EU plug configurations, assuming you're in Europe since you spent Euros

From what I've seen, those are good power cost for Europe. Estimating a break even at 6-7 months is kind of shooting blindly; It depends, there are too many variables. Use a pool with 0% fee.

DeathAndTaxes setup, or similar, is what you're going to want.

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February 01, 2012, 11:50:53 PM
 #7

Wow! Really thanks for the answers! This is really really helpful Smiley

Now, what will make me mine it or not is the power consumption of the rig. According to what you say i should expect to draw about 300 watt total. And not 500+ . Which seems good Smiley I am starting with just one card, and i ll try to buy 1 more soon. 3d looks difficult for now...

Thank you very much again Smiley
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February 01, 2012, 11:54:21 PM
 #8

Make sure you turn everything you don't need off in the MB BIOS.  Onboard sound, extra ethernet controllers, usb3.0 ports, IDE controller, SATA, firewire, etc.  All you need is USB2 ports turned on and that is it.  

* not using windows - saves wattage
* using USB drive instead of HDD - saves wattage
* not running junk you don't need in MB - saves wattage
* keeping fans to a minimum (I run 2x120mm) - saves wattage
* downclocking the memory low - saves wattage

Every little bit helps.

With only 1 card is might be a little higher than 300W, maybe 350W tops.   The only unknown is how much of the 870W is the system (non-GPU) idle.

Say non-GPU system wattage is 70 (a guess).  Then 870 - 70 = 800.  800/3 = ~265W per card.  So a single card rig would be 265+70= 335W.

Whatever the system non-GPU load is, obviously spreading over 3 cards is more efficient than spread over 1 card so your eventual goal would be multiple cards for max efficiency.
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February 02, 2012, 12:16:48 AM
 #9

Hmmm. So going for 3 cards in the end should be my target. Now about the MB it costs 150 euros here which seems a bit expensive but i assume you mean the spacing is very good for temperatures?

Yes i ll go for Ubuntu and i will close unnecessary things Smiley

Now for the PSU. I understand about the efficiency of course, but dammit gold is double+ the price!

Anyway, i ll grab the vga tomorrow and start searching for the rest Smiley thank you
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February 02, 2012, 12:28:31 AM
 #10

* not using windows - saves wattage

IMO this bullet is questionable! Especially if using Windows 7, and restricting the AMD CPU to run at 800MHz.

Looking to review Bitcoin / Crypto mining Hardware.
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February 02, 2012, 12:31:02 AM
 #11

* not using windows - saves wattage

IMO this bullet is questionable! Especially if using Windows 7, and restricting the AMD CPU to run at 800MHz.
It is correct, windows always has all sorts of background services munching away at CPU time unnecessarily, especially with all the useless graphics shit. Linux is a bit more efficient due to simplicity and no GUI etc.

Mining Rig Extraordinaire - the Trenton BPX6806 18-slot PCIe backplane [PICS] Dead project is dead, all hail the coming of the mighty ASIC!
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February 02, 2012, 01:30:50 AM
 #12

Hmmm. So going for 3 cards in the end should be my target. Now about the MB it costs 150 euros here which seems a bit expensive but i assume you mean the spacing is very good for temperatures?

Not just good but required.

The 3 slot spacing allows a 2 slot card and then a blank slot.  No other way to get 3 dual slot cards on a single MB without extenders.
Slots 1, Slot 4, Slot 7 are the slots you will use.

Quote
Now for the PSU. I understand about the efficiency of course, but dammit gold is double+ the price!

Well that is why we saved money by not buying lots of RAM, GPU coolers, high end CPU, HDD, etc.  Smiley Long run efficiency matters.  If you have to look for a 80-Plus Bronze or Silver unit but you want your electrical costs as low as possible to be competitive. 
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February 02, 2012, 06:19:25 AM
 #13

* not using windows - saves wattage

IMO this bullet is questionable! Especially if using Windows 7, and restricting the AMD CPU to run at 800MHz.
It is correct, windows always has all sorts of background services munching away at CPU time unnecessarily, especially with all the useless graphics shit. Linux is a bit more efficient due to simplicity and no GUI etc.

As I said if, the AMD CPU is restricted to 800MHz, which happens to be the lowest p-state for the 45nm AMD K10 CPUs, the mining rig should consume almost the same power, with either Windows or Linux. I am assuming that one would be using a fresh install devoid of any cpu hogs, with relevant drivers loaded.
I am saying this because I have measured the power usage (VA) on the wall and it was within a margin of 5% between the two OSs.
I am not bashing or promoting any operating system here, just trying to put out my observations.
My gaming rig is also one of my two mining rigs, and I am speaking from my experiences on this rig.  

Looking to review Bitcoin / Crypto mining Hardware.
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February 02, 2012, 11:36:18 AM
 #14

Alright. So 265 for the VGA.
Just found new unused from store the MSI MB for 99 euros. I think its good. Yesterday i needed 130+ for the same.
I think i ll put an Athlon x2 3200 i found for 20 euros. Some one will give me a Ram hopefully Tongue

So its the PSU now. A guy wants to sell a Corsair AX1200 for about 170 euros. Which i believe it is good again. And i will be at 90+% efficiency Smiley


btw, i have a 2.5inch hhd disk. It draws about 5W which i believe in 4 months is about 1.3 euros total in electricity. But i think i will add it since i want to use pyrit for cracking passwords...


So  a total of 600 euros. Will i ever break even Tongue Thanks  for all the help! I hope it works out finally....
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February 02, 2012, 02:12:10 PM
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So its the PSU now. A guy wants to sell a Corsair AX1200 for about 170 euros. Which i believe it is good again. And i will be at 90+% efficiency Smiley

AX1200 is a monster PSU.  Solid choice.  If you are getting it for a good deal even better.

Quote
So a total of 600 euros. Will i ever break even  Thanks  for all the help! I hope it works out finally....

With only 1 GPU it will be tough but you are "upgrade ready" with that config.

Granted difficulty and price can (and likely will) change but:
1 5970 = ~ 750 MH/s
@ current difficulty (and $6 per BTC) you are looking @ $106 gross per month.
Power @ 350W and $0.113 per kWh = -$28 per month
Net is $78 per month.
$790 system / $78 ~= 10 month break even.  Ouch.

2x 5970 = ~ 1.5GH/s  (say for $350 extra)
@ current difficulty (and $6 per BTC) you are looking @ $212 gross per month.
Power @ 610W and $0.113 per kWh = -$49 per month
Net is $163 per month.
$1,140 system / $163 = 7 month break even.  Getting better.

3x 5970 = ~ 2.25GH/s  (say for $700 extra)
@ current difficulty (and $6 per BTC) you are looking @ $318 gross per month.
Power @ 610W and $0.113 per kWh = -$70 per month
Net is $248 per month.
$1,390 system / $163 = 6 month break even.  Nice.

4x 5970 = ~3.0 GH/s  (say for $1110 extra including extenders and custom built rig)
@ current difficulty (and $6 per BTC) you are looking @ $424 gross per month.
Power @ 1130W and $0.113 per kWh = -$92 per month
Net is $386 per month.
$1,900 system / $386 = 5 month break even.  Sweet.

Don't take the # as gospel.  The larger point is more hashing power per rig improves efficiency (both MH/$ and MH/W).

The key thing now is too get more GPU power as cheap as possible.  So keep your eye out.  Only buy when you find a good price.  Save your mining rewards to pay for that 2nd, 3rd, 4th GPU.




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February 02, 2012, 04:51:02 PM
 #16

Thank you very very much for all the writing!

Well i am already starting to look out for the second card Smiley  Probably i start mining in a day or two Smiley I only need the cpu actually now....

Although i know i have tire you i cant but ask about which miner you believe is better right now and pool?


P.S. generally i believe it to be a fail-safe investment. I mean, theoretically whatever happens i will take my money back in a year and i will have bought a very descent pc.

Now even if for some reason bitcoin isnt used anymore i still can sell the pc at 2/3 the price.

So whatever happens i cant lose money. And after all i really really like the whole idea of the bitcoin Smiley
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February 02, 2012, 04:54:07 PM
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Thank you very very much for all the writing!

Well i am already starting to look out for the second card Smiley  Probably i start mining in a day or two Smiley I only need the cpu actually now....

Although i know i have tire you i cant but ask about which miner you believe is better right now and pool?


P.S. generally i believe it to be a fail-safe investment. I mean, theoretically whatever happens i will take my money back in a year and i will have bought a very descent pc.

Now even if for some reason bitcoin isnt used anymore i still can sell the pc at 2/3 the price.

So whatever happens i cant lose money. And after all i really really like the whole idea of the bitcoin Smiley


A 2 x 5970 rig is a very respectable rig Smiley

Be sure to join P2Pool or basically any other pool rather than Deepbit! Honestly, I would go solo with that.

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February 02, 2012, 05:03:22 PM
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I use cgminer mine at Bitminter pool.

I would recommend you support a smaller pool or use p2pool.  Support keeping Bitcoin network decentralized.
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February 02, 2012, 05:51:18 PM
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4x 5970 = ~3.0 GH/s  (say for $1110 extra including extenders and custom built rig)
@ current difficulty (and $6 per BTC) you are looking @ $424 gross per month.
Power @ 1130W and $0.113 per kWh = -$92 per month
Net is $386 per month.
$1,900 system / $386 = 5 month break even.  Sweet.

That's what I want to build right now. I undervolt my card to 887mv 605/200MHz, which gives me 554 MH/s and saves about 115W versus running at 1050mv 825/200.  So is it reasonable to expect similar power savings on a undervolted quad-5970 system to be around 4x115W?  If so, a quick calc shows 1130W-460W=670W @ 2.2 GH/s, or 3.28 MH/J!  That is pretty nuts.

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February 02, 2012, 05:55:12 PM
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So its the PSU now. A guy wants to sell a Corsair AX1200 for about 170 euros. Which i believe it is good again. And i will be at 90+% efficiency Smiley

AX1200 is a monster PSU.  Solid choice.  If you are getting it for a good deal even better.

Quote
So a total of 600 euros. Will i ever break even  Thanks  for all the help! I hope it works out finally....

With only 1 GPU it will be tough but you are "upgrade ready" with that config.

Granted difficulty and price can (and likely will) change but:
1 5970 = ~ 750 MH/s
@ current difficulty (and $6 per BTC) you are looking @ $106 gross per month.
Power @ 350W and $0.113 per kWh = -$28 per month
Net is $78 per month.
$790 system / $78 ~= 10 month break even.  Ouch.

2x 5970 = ~ 1.5GH/s  (say for $350 extra)
@ current difficulty (and $6 per BTC) you are looking @ $212 gross per month.
Power @ 610W and $0.113 per kWh = -$49 per month
Net is $163 per month.
$1,140 system / $163 = 7 month break even.  Getting better.

3x 5970 = ~ 2.25GH/s  (say for $700 extra)
@ current difficulty (and $6 per BTC) you are looking @ $318 gross per month.
Power @ 610W and $0.113 per kWh = -$70 per month
Net is $248 per month.
$1,390 system / $163 = 6 month break even.  Nice.

4x 5970 = ~3.0 GH/s  (say for $1110 extra including extenders and custom built rig)
@ current difficulty (and $6 per BTC) you are looking @ $424 gross per month.
Power @ 1130W and $0.113 per kWh = -$92 per month
Net is $386 per month.
$1,900 system / $386 = 5 month break even.  Sweet.

Don't take the # as gospel.  The larger point is more hashing power per rig improves efficiency (both MH/$ and MH/W).

The key thing now is too get more GPU power as cheap as possible.  So keep your eye out.  Only buy when you find a good price.  Save your mining rewards to pay for that 2nd, 3rd, 4th GPU.






When you guys are done, difficulty will go up massively... You have to factor that for your break even dates Wink

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