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Local / Biete / Re: 2x Komplette Miner, 2x 1.1 GH/s+ (8x 5830, MSI 790FX-GD70, 80+ Gold-NT, Riser)
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on: September 30, 2011, 08:24:23 AM
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Sorry das kann ich leider nicht machen. Wenn du mal nachrechnest wirst du feststellen, dass meine vorgeschlagenen Preise bereits einen erheblichen Rabatt beinhalten. Außerdem weiss ich nicht was der Versand in die Schweiz bei so einem schweren und großen Paket kosten wird, daher würde ich den Versand lieber außen vor lassen. Daher mein Gegenabgebot:
Beide Miner für 1100€ + Versand in die Schweiz. Das sind fast 200€ Ersparnis gegenüber meinem vorgeschlagenen Preis für die Einzelteile.
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Local / Biete / Re: 2x Komplette Miner, 2x 1.1 GH/s+ (8x 5830, MSI 790FX-GD70, 80+ Gold-NT, Riser)
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on: September 29, 2011, 01:39:25 PM
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pro Maschine sind das jeweils ca. 600W Verbrauch auf Vollast. Leistung steht im Titel, 2x 1.1GH/s = 2200 MH/s  Mittlerweile evtl mehr, je nachdem wie sich die Mining-Software in den vergangenen drei Monaten entwickelt hat. Ansich ist alles dabei und sofort funktionsfähig, allerdings müssten wir mal schauen wegen dem Betriebssystem bzw. der Lizenz, da momentan Windows 7 auf beiden Systeme läuft. Wenn du dich mit Unix auskennst wäre es vielleicht geschickt eine Linux-Distribution zu installieren. Bitte Bescheid sagen wenn ernsthaftes Interesse besteht, habe schon einige Angebote für Einzelteile aber der Verkauf von den beiden Komplettsystemen ist mir natürlich lieber |
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Local / Biete / 2x Komplette Miner, 2x 1.1 GH/s+ (8x 5830, MSI 790FX-GD70, 80+ Gold-NT, Riser)
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on: September 21, 2011, 08:49:54 AM
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Hallo zusammen, ich biete hier insgesamt zwei Bitcoin-Miner, die ich am liebsten auch so verkaufen möchte. Angebote daher vorzugsweise nur wenn mehrere oder alle Teile genommen werden. Die Miner liefen stabil und mit je 950Mhz pro Karte bei sehr guten Temperaturen von maximal 70°C, im Schnitt eher 60°C. Hier ein paar Bilder: https://bitcointalk.org/index.php?topic=7216.msg357992#msg357992Je eine Karte pro Miner wurde mit einem Riser erhöht um die Wärme besser abtransportieren zu können. Die Konstruktion (mehrfach verschraubte Alu-Leisten) ist stabil und sicher und lässt sich bei Bedarf durch 4 Schrauben an den Grafikkarten vollständig in einem Stück entfernen. Alle Teile waren nur 1,5 Monate in Betrieb (Juni bis August), der Zustand daher wie neu. Die Systeme wurden rund um die Uhr überwacht und das Übertakten wurde sehr sorgsam angegangen. Die Temperaturen gingen nie über 80°C, längerfristig nie über 75°C. Alle Artikel werden in Originalverpackung mit vollständigem Zubehör verkauft und eine Kopie der Rechnung lege ich ebenfalls bei (Rechnungsdaten zwischen 14.6.2011 und 6.7.2011, alles von bewährten Online-Shops). Eines der Boards stammte komplett neu aus RMA, wurde schon im März ersetzt aber auch erst im Juni zum ersten Mal eingesetzt. 2x 1x MSI 790FX-GD70 AM3 - 80€ 2x 4x Sapphire 5830 Extreme 1GB Lite-Retail - 85€ 2x 1x AMD Sempron 145 Boxed 2.8Ghz AM3 - 23€ 2x 1x Kingston 2GB (2x 1GB Kit) DDR3-1333 CL9 HyperX Blue - 15€ 2x Samsung Spinpoint F3 250GB 16MB SATA II - 20 € 1x Silverstone Strider Gold ST1000-G 1000W 80+ Gold - 160€ 1x beQuiet DarkPower Pro P9 850W 80+ Gold (+extra PCI-E Kabel) - 150€2x 1x PCI-E x16 Riser Kabel - 10€ ---------------------------------------------------------------------- Preis für ein Komplettsystem: 600€ (1000W) bzw. 590€ (850W)Zubehör:1x TechnoLine Cost Control Energiekostenmessgerät - 11€ 1x Xigmatek XLF-F1453 LED Lüfter 140mm - 10€ 2x Digitus WLAN Adapter USB 2.0 - 9€ 1x Arctic Cooling 120mm Lüfter - 6€ Der Preis für je ein Komplettsystem beinhaltet bereits einen nicht unerheblichen Rabatt, daher Festpreis, falls ich die Systeme so nicht loswerde lässt sich bei Abnahme von mehreren Teilen sicherlich auch noch etwas verhandeln. Die Preise für Einzelartikel sind aber Festpreise. Hier noch mein eBay-Account, 100% positiv: http://myworld.ebay.de/dahennessyIch freue mich über Angebote und wünsche erfolgreiches shoppen  |
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Bitcoin / Mining / Re: How much does it cost YOU to produce a bitcoin?
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on: July 14, 2011, 08:19:04 AM
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with your 2500Mhash/s, you should be doing about 2100 shares per hour, or at 1.3kW 1625 shares per kWh. that's 4.16€ or $5.85. still not too great. 19kWh per btc is probably not the most efficient mining setup. did you increase the voltage on your 5830s? if yes, that's probably not efficient (in my case it's not), undo it. go with whatever clocks your stock voltage allows.
I think you did a little too much theorycrafting. If you mine at a pool, just check how much BTC you produced over the last 24h. Those are the real numbers, including pool downtime etc. deepbit shows that directly at the account page. If you calculate with requirered shares, that does not include difficulty increases. I was just going by the lastest numbers deepbit provides, which varies between 1.3 and 1.5 BTC/day. The MH/s rate deepbit shows me (actual number for a solved block) varies between 2100 and 2300 since overclocking is not quite complete yet. Btw I did not change anything on the voltages. Shares look different though, I took some of the numbers from deepbit and divided it with the time it took to solve the block, result is 32-33 shares per minute, which is 1900-2000 shares per hour. You left out all other parts of your system except gpus so you can't really compare to my rigs. CPUs are 50W each, HDDs 15W each, Mainboard itself 10W each, RAM 2x15W each = 105W per rig. I've disable all I could like second lan, sound, firewire etc. and I don't know what else I could do, besides probably underclocking/volting the CPU which I will do soon. of course i didn't include difficulty increases. i didn't include variance, either. on btcmine i get about 0.5% stales and have had 0 downtime for the past few weeks. i can't include difficulty increases because i don't know where the network is going - it can go anywhere: http://bitcoin.sipa.be/growth-10k.pngif i included variance, i'd have to draw a gaussian curve. i don't think the op wanted to know at which % we pay which amount of $ but instead the expectation value. i have included the 0.5% stale rate. somewhere around this forums there is a post which says 1 share per minute requires 71 Mhash/s. that's a fixed value as a share is a solved block with difficulty = 1. maybe this explains something (i don't quite understand some of your post). it's much easier to calculate with that, because the chance to find a block is always 1 share divided by difficulty. So if I'd ask you what you earn at your job, you would tell me what you should earn measured by the time and effort you put into your work, not what you boss is actually paying you and not subtract taxes and stuff.  |
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Other / CPU/GPU Bitcoin mining hardware / Re: PCI-E riser/extensions
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on: July 13, 2011, 07:04:48 PM
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These are the ones that one user in this forum recently had trouble with. I think one of the lanes actually caught on fire. But I can't find the friggin thread right now, I know it was called something like "PCIE extension risers NOT to buy". When I was searching for risers myself, I found an ebay auction where exactly these were sold but the Seller said in the description that they don't run with his mainboard which was the same as mine (MSI GD70) So I kept searching and found these: http://cgi.ebay.de/ws/eBayISAPI.dll?ViewItem&item=220808834813&ssPageName=STRK:MEWAX:ITThey make a very reliable and solid appeal and the lanes are double, that's what one of the guys said was missing at the other one and because of this they started to burn. At least they run perfectly with my rigs, no trouble so far. EDIT lol didn't even think of clicking the link above  There you have it. But why won't the search find this thread..? |
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Bitcoin / Mining / Re: How much does it cost YOU to produce a bitcoin?
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on: July 13, 2011, 02:32:03 PM
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with your 2500Mhash/s, you should be doing about 2100 shares per hour, or at 1.3kW 1625 shares per kWh. that's 4.16€ or $5.85. still not too great. 19kWh per btc is probably not the most efficient mining setup. did you increase the voltage on your 5830s? if yes, that's probably not efficient (in my case it's not), undo it. go with whatever clocks your stock voltage allows.
I think you did a little too much theorycrafting. If you mine at a pool, just check how much BTC you produced over the last 24h. Those are the real numbers, including pool downtime etc. deepbit shows that directly at the account page. If you calculate with requirered shares, that does not include difficulty increases. I was just going by the lastest numbers deepbit provides, which varies between 1.3 and 1.5 BTC/day. The MH/s rate deepbit shows me (actual number for a solved block) varies between 2100 and 2300 since overclocking is not quite complete yet. Btw I did not change anything on the voltages. Shares look different though, I took some of the numbers from deepbit and divided it with the time it took to solve the block, result is 32-33 shares per minute, which is 1900-2000 shares per hour. You left out all other parts of your system except gpus so you can't really compare to my rigs. CPUs are 50W each, HDDs 15W each, Mainboard itself 10W each, RAM 2x15W each = 105W per rig. I've disable all I could like second lan, sound, firewire etc. and I don't know what else I could do, besides probably underclocking/volting the CPU which I will do soon. |
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Other / Archival / Re: Pictures of your mining rigs!
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on: July 13, 2011, 07:55:32 AM
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This is our final setup, two rigs with four 5830 each. All cards currently clocked at 950Mhz, hottest card at 69°C (The one in the middle at the bottom). We had them all four squeezed together on the board but they just got too hot (80°C @ 900Mhz), so I built this frame to rise one card up and also fix the others in place.     Image quality is kinda bad, I will post better pictures as soon as I get my hands on a real camera. |
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Bitcoin / Mining support / Re: Is uptime important? (WiFi BitCoin Heater on wheels.)
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on: July 13, 2011, 07:22:40 AM
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Assuming you're mining on a pool: If you don't mind losing bitcoins for that time, then it doesn't matter. Your rig will produce a certain amount of bitcoins per hour/minute, exactly the amount of downtime will be lost. But once you reboot, fire up your miners again and you should be fine. Nice idea though, you should get that name patented, I really like the sound of it |
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Bitcoin / Mining support / Re: 5830 doesn't respond when mining...
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on: July 12, 2011, 08:43:07 AM
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1000mhz is quiet high... maybe you have reached the cards limits. Every card is different, some can do 1050, some only 900. One of mine only does 950.
Try with normal memory clocks and see if that helps. You can check for artifacts with OCCT or any other tool (They may give different results). If you get any artifact, thats probably the card's limit.
You could also try moving the problem card to the best-vented slot to get it cooler. This also has the advantage that it's not the primary display and crashes may recover easier.
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Bitcoin / Mining software (miners) / Re: Remote monitoring: Gpu temp, fan speed, hash rate, uptime, share ratio
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on: July 12, 2011, 07:49:24 AM
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Thats perfect! I really though about coding this exactly myself, but I'm more a web developer than anything else and frankly I don't know how to get to the temperatures for example. Right now I always have to connect via VNC (which must be installed at first) which itself already makes trouble because it somehow interferes with the display drivers and sometimes crashes my rig when connecting.
Then all these programs have to run to monitor all the stuff, which consumes a lot of additional energy.
Anyway, really looking forward to this!
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Bitcoin / Mining / Re: Mining will always be barely profitable
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on: July 11, 2011, 09:42:02 AM
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Which is pretty much your problem I can offer you colocation in about a month cheaper than that including administration - I am JUST outside of germany and pay.... 6.5 cents + VAT. During the day - night is cheaper I am quiet interested, where would that be - poland? And we have a carbon tax coming in soon, which will boost coal and gas fired power costs nicely. No nuclear power here.
That is the next problem. Germany is currently phasing out all nuclear power plants, so energy costs will rise even more in the next few years. My guess is that next year bitcoin mining won't pay out anymore in germany. |
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