Bitcoin Forum

Bitcoin => Mining => Topic started by: mooks on June 11, 2011, 11:01:00 PM



Title: Building a powerminingpc
Post by: mooks on June 11, 2011, 11:01:00 PM
hi everybody!

since three days i'm using my nvidia 295 gtx for mining.
overall it calculates between 60 and 120 MH/sec. (i don't know why it drops down sometimes...)
but 100MH/sec is much to low for me...

so i'm thinking to buy a pc only for mining! (in august)

cpu: intel core i3-2100                                         95€                              65W
mb: ASUS P8P67 WS Revolution Rev 3.0              207€
graca: 4*Sapphire Radeon HD 5870                     155€ each                    188W each
ram: g.skill 8gb ddr3-1333                                   51€
power: Xilence Modular Series 1200W                  150€

TOTAL: 1123€

the system should calculate 1600MH/sec.
using http://www.alloscomp.com/bitcoin/calculator.php
it sould "produce" 85$ per day. ~60€ (i estimate with 30$ per BTC)
so in one month: $2,586.87 ~ 1800 €
if i calculate the fees and so on i estimate about 1200€ per month.

my adwantage is, that i don't have to pay for the needed powerusage :)

what do you think about this systhem?
is my calculation right?

does somebody know why the btc/$ rate decrease so much yesterday?

best regards
mooks

pp: sorry for my bad english


Title: Re: Building a powerminingpc
Post by: kokojie on June 11, 2011, 11:11:21 PM
hardware is fine, but your estimate is wrong. Difficulty will increase by 60% in just 3 days. So your $85/day becomes something like $50 per day, and then there's the market crash, but if you value BTC at $30, that's up to you.


Title: Re: Building a powerminingpc
Post by: Phlegmsandwich on June 11, 2011, 11:17:56 PM
take a look at bitcoinwatch.com,  BTC no longer is worth $30


Title: Re: Building a powerminingpc
Post by: mooks on June 11, 2011, 11:21:05 PM
thx!

yes i know that the value decreased (also wrote that...) i'm just optimistic ;)
ok 60% is really much... also if i estimate that the value is rising it won't compensate the rising difficulty...

i'm still waiting so lets see how the course is changing :)


Title: Re: Building a powerminingpc
Post by: Mousepotato on June 13, 2011, 05:24:14 PM
thx!

yes i know that the value decreased (also wrote that...) i'm just optimistic ;)
ok 60% is really much... also if i estimate that the value is rising it won't compensate the rising difficulty...

i'm still waiting so lets see how the course is changing :)
The only thing you're optimistic about is finding 4 5870's :)  Good luck with that.


Title: Re: Building a powerminingpc
Post by: alexdrans on June 13, 2011, 06:12:34 PM
thx!

yes i know that the value decreased (also wrote that...) i'm just optimistic ;)
ok 60% is really much... also if i estimate that the value is rising it won't compensate the rising difficulty...

i'm still waiting so lets see how the course is changing :)
The only thing you're optimistic about is finding 4 5870's :)  Good luck with that.

They're not difficult to find at all in Europe.


Title: Re: Building a powerminingpc
Post by: hugolp on June 13, 2011, 06:16:20 PM
The only thing you're optimistic about is finding 4 5870's :)  Good luck with that.

They're not difficult to find at all in Europe.

You can find some, but not at 155 euros. More like at 200+ euros. Still worth it in my opinion, its a very good card, but your stimations are way off. You are going to make a lot less money than you expect.