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1  Other / Obsolete (selling) / Re: 1.0 to 1.2 Ghps mining contracts — 400 GBP / 645 USD per month on: June 16, 2011, 08:44:20 PM
The 12-month price is at the real total costs. When talking only about "constant exchange rate + rising diffuculty" you won't ever see any profits. However, I don't want to argue and start a flame as is happening in similar threads.
2  Other / Obsolete (selling) / 1.0 to 1.2 Ghps mining contracts — 400 GBP / 645 USD per month on: June 16, 2011, 06:57:17 PM

Outsourced Bitcoin miming — capacity multiples of 1 – 1.2 Ghps

Price: GBP 400 per 1 Ghps per Month (or 455 EUR, or 645 USD)

Minimum contract length is 4 months with an upfront payment.

Limited offer: Subscribers of first 5 Ghps (in total) will receive further mining (the 5th and following months) at a 60% of the monthly price forever.

How it works
With a mining contract I will operate a dedicated mining rig and direct the submissions to a mining pool of your choice. You just provide me credentials for workers.

The service starts once your payment is credited to my account. That's usually within 2 – 3 business days in Europe, sometimes faster. In case I won't have enough hardware ready, I'll redirect mine to your contract.

Guaranteed minimum mining capacity of one rig is 1.0 Ghps, but usually 1.2 Ghps is reachable. My price calculation is for 1.0 Ghps performance, so the additional 200 Mhps are extra at no charge. To be clear: Currently I'm using 4x Sapphire HD 5830, each yielding 298 Mhps, which means 1192 Mhps total.

For 4 months (18wks) you pay 1600 GBP. My price covers hardware expenses, electricity, maintenance, airconditioning, time to operate the infrastructure and my reasonable profit. I'm probably not going to get rich but have some fun. If the current mining difficulty stayed the same you'd get approx 1.35 BTC / day, i.e. 170 BTC per 4 months. That's 2109 GBP. Although, difficulty and BTC exchange rates are subject to change, it's likely you'll make even more.

  • no time spent buying hardware, building, installing, getting up and working
  • no problems with extra heat and noise in your bedroom
  • predictable BTC income over time
  • 99% uptime guarantee


0. Why don't you just build a few rigs for yourself?
I just don't have any spare $k to build a farm of mining rigs.

1. How can I be sure this is not a rip-off?
I will email you an invoice in PDF before you make the payment. The service is provided by my company, FrontXML, LLC, so you have the chance taking me to court if I would cheat on you. My business is based in Czech Republic.

2. What equipment do you use?
I'm using components from reputable vendors only — ASUS, Gigabyte, Sapphire, WD, Thermaltake, Coolermaster. For mining I prefer the Phoenix miner with phatk kernel. However, I started working on a custom miner implementation that will make administration and monitoring of the whole infrastructure a lot easier.

3. Where do you keep all that hardware? In your bedroom?
No. I keep it in my company's decent server room.

4. What uptime guarantee do you offer?
99%. Outages happen with every hardware, but shall not be frequent. My aim is to provide. So for every 1% of downtime (=7.2 hours) you get 1 extra day of mining free (=24 hours).

5. Do you have a website?
Yes. Nothing elaborate but serves the purpose of providing information about my service.

Please PM me for any questions and orders.
3  Economy / Marketplace / Re: 1.2 Ghash for sale on: June 16, 2011, 05:23:14 PM
(and not just leasing computers for general purposes that have AMD GPUs...which would lease for 1/10th the rates you're asking, by the way)

Please direct everyone to a place that offers 1.2 Ghash for $75 per 30 day lease.  I would gladly lease that.

Nobody leases hash rates. They lease equipment. Typical lease rates are around 1/10th-1/12th of the purchase price, per month, with a multi-year agreement.

Well, so then I must have been on a different forum where a couple of guys offered exactly this: leasing hash rates, a.k.a. mining contracts. Actually it's because it makes a lot sense — not just for the seller but for the buyer as well. Personally I started setting up such a service as well… and I don't see a problem in offering such thing. It's (almost) just a matter of the right price, no? And trust of course.
4  Bitcoin / Mining / Re: Must have tool for multi-gpu/cpu windows miners! on: June 15, 2011, 08:56:25 PM
Setting CPU affinity is a kind of a "last resort" solution. With a GPU miner you don't need it at all because it consumes virtually no CPU resources. With CPU mining, if you really want it, you can use start /low <your miner.exe> to run it with low priority. On modern systems like Win 7 you will barely notice something's consuming your CPU's idle time.
5  Other / Beginners & Help / Re: Where does the money come from when mining? on: June 15, 2011, 08:45:35 PM
Where does the money come from when mining?
They are generated when a specific mathematical equation is solved by the mining software. Since it can't cheat (=must use brute force approach) and since the system is well designed (=mining difficulty) not "BTC mining flood" can occur.

Who pays for these useless calculations?
You! And they aren't useless since they generate bitcoins for you.

I mean at the end you simply get money from a other person when mining right?
No. You get it from the system itself.

Or is this simply money for free?  (if we don't look at the electricity bills ofcourse)
No, because it costs at least the electricity.
6  Other / Beginners & Help / Re: ati radeon 6950 on: June 15, 2011, 08:41:00 PM
How do I find that info.  Are you talking about the card or the computer.  Thanks.

Core clock = the speed at which the GPU runs. Catalyst drivers will tell you.
Miner, kernel = the mining software you use. You know that.
SDK version = what AMD APP SDK version you installed.
7  Other / Beginners & Help / Re: ati radeon 6950 on: June 15, 2011, 08:15:00 PM
What core clock, miner, kernel, SDK version you use?
8  Other / Beginners & Help / Re: 5850 or 6850 for minning on: June 15, 2011, 08:13:05 PM
My 5830s ($100 each) are pushing 260 MH/s at 875 MHz core frequency.

What SDK version do you use? Had a similar speed (266 @ 900 MHz) but then dropped to 248 after some experiments with SDK version and I can't figure out the cause. Using Win 7 SP1 x64, SDK 2.4 currently, and phoenix miner with phatk kernel on that particular machine.
9  Other / Beginners & Help / Re: 5850 or 6850 for minning on: June 15, 2011, 07:37:45 PM
Ok. thanx for the answers but it seems that no shops have 5850 in stock anymore. I cant find it in my country. What do you recommend from 6xxx series for mining under 200 eur?

I have a 6950 yielding approx. 270 Mhps without OC. However, if you can grab a 5830 you get almost the same Mhps for half the price.
10  Other / Beginners & Help / Re: Whitelist Requests (Want out of here?) on: June 15, 2011, 07:35:36 PM
Let me make one thing clear: I cannot whitelist you people, unfortunately. I would be more than happy to but my privileges do not allow me to do so. You will have to wait for authorized personnel to sort through the queue. My apologies. 

If the whitelisting process actually doens't work, so why there are the newbie restrictions like they are? Requiring a few posts that make sense is alright, but requiring four hours of activity on the forum means people who wait for the Jr. Member status but don't have the need to comment on everything will be just poking around uselessly for a few hours. Wouldn't it be better to decrease it to just, say, one hour?
11  Other / Beginners & Help / Re: Help Please on: June 15, 2011, 12:05:45 PM
You can use to make sure the transaction was processed. Then, just wait for synchronization… I'd also try restarting Bitcoin at your machine.
12  Other / Beginners & Help / Re: 5850 or 6850 for minning on: June 13, 2011, 02:01:27 PM
The price is the same, about ~170$

While 6850 may score better for games, 5850 is better suited for computations like those performed when mining bitcoins.
13  Other / Beginners & Help / Re: New mining rig and media server? on: June 13, 2011, 01:41:52 PM
All I really need recommending are the Motherboard and CPU. Would anyone be able to recommend me some?

It depends on whether you want to make some other use of the machine as well. For a mining-only solution I'd stick with some low-cost motherboard of a reputable brand (my favorites are Asus and Gigabyte) and purchase the cheapest compatible CPU, regardless if Intel or AMD. However, I'd think of some extensibility for the future, so I'd recommend giving a go to a motherboard with 2+ PCI-E 16slots. Remember the slots shall not be adjacent to each other, so you can fit two (or more) dual-height cards.
14  Other / Beginners & Help / Re: Too late to start mining? on: June 13, 2011, 12:31:41 PM
What do you think? Too late or do you think the value will increase along side the difficulty as it has been doing for the most part?

I think it's never too late. There's still a huge amount of BTCs to be mined. As the general supply of BTCs will grow I think we will see stabilization of exchange rates that will be above the costs.
15  Other / Beginners & Help / Re: Introduce yourself :) on: June 13, 2011, 12:26:45 PM
Hi everybody,

I've discoverd Bitcoins thanks to a report in a local TV. The idea of a cryptography-based currency is brilliant! I haven been into mining just for a few days, but I'm getting more and more dedicated, running two rigs currently. Also, being a developer and an entrepreneur I'm exploring ways to provide services to the Bitcoin community and market. My business is Czech Republic-based.

16  Other / Beginners & Help / Re: 0.02 giveaway... 2 free bitcents for first ten newbies on: June 13, 2011, 12:20:34 PM
Making my way through the newbie posting limit and this sounds cool :-) My address: 1BeHqaUKkXA8nbf6efLtZLxXrASeS383AF
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