Bitcoin Forum

Hello all. I heard about all of this Bit mining a while ago and it never really caught my attention until I went over my cousins house and saw his setup. I was interested is getting into this, but wanted to know what would be the best and most reliable system to build to get my feet wet?

He uses 3 systems running dual MSI frozr cards. He couldn't tell me if there were other cards that were better or worse.

I have 3 motherboards with single PCI-E 16 slots on it so obviously I would only be able to run a single cards.

I have been reading and everyone seems to like these Ratheon 7950 cards. I just don't want to jump into all of this and build a system that won't be as efficient for the money spent.

Any help will be appreciated!

Don't do it, you will never get your money back!
At current difficulty, a 7950 will "mine" 0.32BTC per month. And the difficulty will continue to rise...

An ASIC miner is the way to go now.

I have read about the ASCI systems the only problem I see with those is that They have a wait time of 2 months. At least that is what they say. In 2 months this whole thing could crash and since those Mining rigs are only designed for that purpose I will be stuck with a cube that I cant sell. If I build a computer at least I can resell the cards and make some of that money back.


I understand that one video card produces around 2-400H and one of the smaller units that cost $275 produce 4-5GH.

That is a no brainer, but I am just hesitant on if this thing will stay alive for much longer.

Thanks for the replies, really helpful!!

If the difficulty will continue to rise is possible to generate some bitcoins with for example ASIC Miner Erupter USB? https://bitcointalk.org/index.php?topic=241414.0 (https://bitcointalk.org/index.php?topic=241414.0) Will it pay itself?

So would be getting into bitcoins now be a bad time?

getting into mining bitcoins is bad yes, unless you have much capital to invest in asic..... even then we may be heading for very low mining profitability and even negative profitibility

We have a decent setup with 4 5970s water cooled and currently mining about .085 btc/day. Its not bad, considering the cards were just sitting there previously.

I was just looking to buy 1 or 2 of the 5GH units. Don't want to spend that much in case something gets screwed up I only lost 600 bucks.

i have 20 rigs of 4 7450s and 1 rig of 3 7950s  i would mine LTC not BTC 1 7950 will get you nearly 1ltc a day  if you need help pm me

Thank you so much bud. DO any of you know if I can mine LTC instead of BTC with the ASIC units?

at the min asic units dont work on scrypt coins

I'm not telling you to risk, but if you are not willing to risk, you cannot expect high profit.
On the other hand, there is nt much you can do right now.
No way to buy 1st hand Avalon anymore, if you order from BFL you will have to wait several months, and USB miners are still little overpriced (even after recent 50% discount).

And the most important thing - if you going only for profit, best option is to buy bitcoins directly. But if you are fan of technology surrounding the bitcoin ecosystem, feel free to mine on whatever (http://vimeo.com/62560281) you want. It's fun.

if you want a long term investment you would probably be beter off spending 500 usd on buying ltc and mabe a bit of pxc
 ( i hold 250,000 pxc 25btc worth and with in 6 months  i can see it being woth 10 times as much as now  )

I am not going to lie profit is the main reason why I want to do this. I also enjoy the building process of systems. I just bought a house and don't exactly have the cash to go out and spend 3k on building 3-4 systems to mine on.

I took the chance and bought one of the 5GH miners and I am willing to wait while I build a system to get familiar with mining. I am going to build one since I already have a 850w power supply and ram. I just need to buy a motherboard and some video cards.


Hey Zack are these the cards you use? http://www.tigerdirect.com/applications/SearchTools/item-details.asp?EdpNo=7566387&CatId=8754


I want something local that I can get at Compusa or tiger direct. I can probably start with a system that runs 3 video cards. with the 850 PSU

all my gpus are >  http://www.sapphiretech.com/presentation/product/?cid=1&gid=3&sgid=1157&pid=1547&lid=1

if you have a good psu you can run 3 7950s on a 850w psu ( if its a good brand )


if you have any questions ask me

Good luck!

A good tip would be that USB Eruptors have dropped price and are selling for 1 BTC now. This is good as a substitute for GPUS.

On the other hand, there are several people that are making boards that will take BFL Chips that they are selling that is also a good option =)

Heres a USB Eruptor miner group:

https://bitcointalk.org/index.php?topic=241434

They get 336 mh/s

Yes the price is realy tempting and you don't need to buy expensive pc to run it.
Tell my please can i buy it and receive them to poland ?
I have some money to invest and i will be able to buy about 10 USB Eruptors.

My biggest thing is something that i will never get my money back if this thing goes down. Those usb interrupts seem great but if the coin market does you will have useless USB drives.

I mean to each their own, but I can't afford to throw money at something knowing that is it goes down i won't get anything for them. That happened to me with the Satellite modding business. I bought all of this equipment and then it went down for good and I never made a profit and I could not sell the equipment.

I went ahead and ordered 2 systems

2 1000w PSU
2 MOBO with FM2 PROCs
2 HD
2 Heatsink and fans
4 MSI prozr cards
4 2GB sticks of ram

Hopefully by the end of the week I will have these 2 running.

If you plan on mining Litecoins later when Bitcoin difficulty hits the roof, its a good system.

Yeah that is the idea. My cousin us doing LTC right now because he is making more money doing LTC than BTC.

Thank, I will update you guys when I am done building the systems.

Do you guys use anything special to track the systems? I have an iPhone and I would like to check on the status of the computers while I am at work.

ide reccoment going for the usb asic miners , there are cheaper now and wayyy more energy efficient

GPU mining will never die!  :D

Basically, once btc difficulty hits the roof, switch to ltc.

When ltc mining stops being profitable, switch to either:
a) GPU-based Render Farm
b) Distributed Computing Simulator for Cancer Research
c) Password Cracking >:D

Mine some litecoins. It pays well.

richcoin is a good one, http://richcoin.net

Rich coin is another alt that will peril in flames as every that went before him.

Holy shit didn't realize there were so many other options. My cousin is making money right now doing LTC. My my new setup how much cash can i generate mining BTC at the moment?

if you want a good investment get pxc  :D

Have an ASIC miner and/or free electricity? No? Then don't even try, it's not profitable.

mining ltc on gpu's still very profitable ( I have 83 7950s )

Good luck, let us know how it goes -- maybe you should post a blog here -- coins mined, electricity cost, etc.

Holy crap Zack. 83 cards man? LOL Thats insane!!

Yeah that would be a good idea about the blog. I was thinking of getting 2 more cards, but going with the 7970 instead of the 7950. The hash rare on the 7950 is 400 where on the 7970 it is 600.

what are you mining ? I get 630hk+ per card on my 7950s 1050mhz core 1250mhz ram 1.050v core using reaper intensity 20

I heard that BTCs are very difficult to generate so I was going to go for LTC first. I am assuming that the config files have to be different for them.

I personally use reaper to mine ltc or any other alt coin best bet is to search the net on how to use reaper and if you get stuck message me  :)

Will do. My cousin was supposed to help me setup the new systems once I build them but it looks like they won't be here until Monday. I do have a precision 380 from dell with dual GTX260 cards. I know they are old, but I was going to try to use them and start to see how this all works so I am more familiar when i build the systems.

I just started myself on Cryptomining, crying that I missed the Bitcoin stampede last year!  The DIFF has exploded since March as the ASIC's have come online.
Thumbs up to trying for LTC, but I've also had "fun" going for CHN Coin, American Coin (with a li'l old GT520 that was dusty and lonely!) and putting some Feathercoins
in my Cap... just in case any of them explode like BTC did!!  The newer coins will have a lower DIFF level so you'll feel richer, quicker!  :)

I had a box of "CAD classroom rig" spares:  GTX650's and super "RAM'd" GT630's (4Gig!!) and currently have them paired up two to a machine
(I leave a GT520 on as a display driver on my main rig to run the display without lagging or taking away from the main miner)
They don't run too hot, and being in the basement of a large school, plenty of chilly air to blow across them for free!!  (free juice is nice too)!

I use cudaminer on them and it's working fine for past 4 months.  You do have to use a stratum proxy, but at least the program boosts Nvidia Mining approx
10 - 25% !!  (sadly Nvidia's Suck Donkey at BTC mining!!! ;D)

GitHub has the Stratum proxy and Cudaminer for download.  When using the Proxy, make sure to chop off everything, including the double // before the pool name.
The Proxy doesn't need that info, and I've seen that tidbit mess people up!  And make SURE you plug in the correct Port Number!!!

Good Luck!

I would recommend joining a mining pool like http://bitminter.com/ to get started.  I started mining earlier in the year and BitMinter was easy to run and go.  Over the months I've learned a lot and moved on to using cgminer software with the BitMinter pool.  I recommend it if you're just starting out.  Plus joining a mining pool will give you more consistent income.  Good luck!!

I have heard that the way to go are pools so you get more money combining the mining power.

I will try to play with that I got and see what kind of rate I get with this old GTXs lol

Thanks for all of the great info guys!!!

In summary, buying a GPU based mining computer system will:

- Definitely not make your initial investment back if you directly mine for BTC (either solo or in a pool). *Unless you have amazingly cheap or free electricity
- Might make  you some money if you mine a good altcoin, the consensus is litecoin, but there are alternatives that are not based on scrypt

On the other hand, since it came up:

- You will DEFINITELY NOT make any money buying block erupter USB's unless they drop in price substantially again (down to 0.25 BTC or less to even consider it)

And using other ASIC hardware well that is irrelevant since there's thousands of people here who want to beat you to getting their hands on that hardware first... so good luck!

---

Pics or it didn't happen. That's a lot of power, a lot of heat, and a lot of hardware (at least $1200 worth, with waterblocks) to just have sitting around. I'd be interested to see your setup, if you really do have it.

Thank so much for the input. Any info is good info for me :-)

GPU Mining is not profitable now.

if you have any spare gfx cards that are "not profitable" you can give them to me to join my 83 "non profitable" cards lol

How much does electricity take away from your LTC mining profits?  Electricity can get pretty expensive in the summer, and I would imagine eat a big chunk of your profits, depending on where you live  :'(

electric is 1/3 of what I mine  :) ( electric here is £0.14 /kwh )

edit that is mining LTC

Try LTC mining might be a better return now

i mine

LTC
PXC
and a couple of other alts at the min i have never mined bitcoin as it just has a over inflated value the most it would be worth with out all the speculators is
10-20usd

You can try to mine litecoin with your gpus. Asics only works on bitcoin. Later you can exchange some ltc for some btc.

You can use your video cards in a pcie x1 slot, you only need a pci-e x1 to pci-e x16 slot adapter that you can find for arround 10$.

Ok guys I have 2 machines running with dual Twin Frozr 7950 cards. I am generating 380-420H/s and the temps are around 65.

Does that sound about right? I have heard of people playing with their script file and make them do around 600h/s.

Any help would be appreciated! I will post pics of the first cage I made, but it is not complete. I am playing around with fans to see where it makes the biggest difference.

try these card seting 1050 core 1250 ram 1.050v core intensity 20 on reaper should get you 630kh  :)

Sweet man. You are awesome. I am already in bed on the other side of the house, but I will try these when I wake up :-)

let me know if you need more settings  :) use gpuz to make sure the voltage changes ( I am not sure if your cards are v locked or not )

ASIC or Nothing

asic is only good for btc  gpus can be used for nearly any coin

No. ASIC are good for any SHA-256 algorithm based coin. For example... PPC, Freicoin, and others.

Zack tried you suggestion and one card on each system said Sick. lol

I was hitting over 600 though.

I cannot change the intensity passed 12 or the server will not take the hashes my cards put out. at 13 intensity i do around 550. At 12 i am back down to 400. Any ideas?

im gessing you are using cg miner try using reaper  :) I know its old but it works very well

Yeah i have not been able to find a good guide to setup reaper. I am actually trying to run Linux to eliminate the use of an HD and I have read that people are getting almost 700kh/s using it.

I will report back, did you find any good guides?

It will take minimum 6 months to a year to break even mining Litecoins. For Litecoin related discussion you can visit /r/truelitecoin on reddit.

The newest and greatest design

http://i99.photobucket.com/albums/l309/yginesta/67A3B54F-F540-4603-9919-59DF5B732B31-991-00000066F68FCC46_zpsb049c5b6.jpg (http://s99.photobucket.com/user/yginesta/media/67A3B54F-F540-4603-9919-59DF5B732B31-991-00000066F68FCC46_zpsb049c5b6.jpg.html)


http://i99.photobucket.com/albums/l309/yginesta/A3018478-051D-4D57-A6E4-6A47454EE923-991-00000066EB3414DE_zpsc6517f9b.jpg (http://s99.photobucket.com/user/yginesta/media/A3018478-051D-4D57-A6E4-6A47454EE923-991-00000066EB3414DE_zpsc6517f9b.jpg.html)

No body likes my system? ;-(

It looks sleek. Can you fit more cards in it?

Thanks! I have 3 on it right now but I am sure I can accommodate 4 or even 5.