This is nonsense.

What you should or should not buy depends on Mh/$ of the devices, taking a look at the cost of power at your particular location.

I'd buy block erupters if they were $5 each.

Your reply is a non-reply. If the metric to decide profitability isn't Mh/$, then what is? There is none?

Perhaps what you have in mind is that most or all vendors sell ASIC devices at inflated prices for the current and future difficulty. They are too expensive. That means too many $ for a particular hashing power, ergo too low Mh/$

Of course there is the operating environment to take into account, power usage, cooling, but that tends to scale proportionally with the operation. Nobody is talking about purchasing 2kW units with low hash rate or leaving an high-end PC on 24/7 just to control a block erupter.   let's be serious and have common sense.

If there are such devices, they are exactly the ones that provide the highest Mh/$

The metric that matters is Mh/$, regardless of the device. Block erupters at 0.17BTC or ~$23 are as good or as bad as a Japaleno.

If I were to buy today, I wouldn't go below ~30 Mh/$ and even then it had to be "in hand", not scammy pre-orders.

.net is good for a lot of things. Speed is not one of them.

Oh, I'm not even trying to diss the service that I'm using! Your pool and system is excellent. There are however 3 issues with multipools, where the operators must be careful:
- Non-accurate profitability calculations when choosing coins, or perhaps it's very variable according to one's personal mining setup. I'm not sure that others have similar amount of rejects on some coins.
- Don't blindly dump a lot of mined coins on an exchange at "any" or unfavourable price. It hurts the miner, the pool, the miners that come later and the viability of the coin. I can wait for days or weeks for a coin to be sold, that's if I actually want to sell.
- Multipools should be careful with the massive amount of hash rate they have at the disposal. What will it do to alt-coins, medium-term? Some coins are honestly copy/paste let alone scamcoins (which are way worse at damaging the scene than anything else combined), others bring decent innovation. Most don't resist being thrown spikes of megahashes at them, either due to technical details, being too new or because people stop trading a coin frequently dumped. I actually care about these efforts and the future viability of those coins, besides the obvious self-interest of profit.

I hope it's clear what I'm trying to say and my concerns 

Or manage what and when I mine and trade with my own script, which is work in progress

I'm talking about defenses against sudden hash rate increases and difficulty spikes. This may justify the amount of rejects I see a few minutes after DGC becomes the most profitable

Edit: Furthermore, I'm not sure I like the auto-sell for BTC. I'm doing so atm, but searching for alternatives.

They are not necessarily "shit coins". They just don't resist well to multipools suddenly throwing 500 Mh at them. Other coins are already incorporating defenses against braindead "profitability mining"

Thanks man. It's futile though, 350 Kh and HW errors. It's time to sell this card to a gamer

This is clearly offtopic(sorry OP), but would you be so kind to share the parameters you used? I can't manage to get above 380 out of my 7870 XT. What a bad purchase!

What saves me is the used 6950 I got for 80€. After the bios modded, it gives me solid 490 Kh/s

Quick question: does networking influence the profits? I ultimately can choose between 3 network devices, better ones cost more or bring extra hassle: wired, crap wireless, good wireless. I currently have the rig mining in the attic with the slow wireless (4 mbit, ping 25 to a nearby speedtest host)

I've read that it usually doesn't matter for the average pool, but it does on p2pool. In this pool that switches coins that have very different parameters, does it matter?

Thanks for the quick reply!  Just with a bit of fine tuning, your pool will become the best/most convenient around

Some coins are worthless to mine, regardless of calculations picking them the most profitable. Take a look at this example:

An 8 minute GLD round provided the same earning as a 42 min KGC round. CGB was much better than KGC, only for 14 minutes. While mining KGC, the pool reported 160 - 200 Kh, while I was pointing 870 at it. Cgminer reported lots of stales and rejects.

Edit: you can see below what happens on my side,  with the pool mining KrugerCoin again



Please black list some coins and don't switch to them, regardless of what calculations tell you (except if the gains appear MUCH higher).

Actually we are only complaining because the payouts are below expected. If they were fine, nobody would bother with technical details.

Either way, I have the impression that any of these pools are a waste of time. Maybe these pools should have a rig with at least a single 7950 pre-mining the so called "most profitable coin" for 2 minutes before making the switch, to make sure that stalls and rejects don't eat up hash rate.

Blindingly switching according to calculations similar to what seen on coinchoose, doesn't cut it. My rig is stable, cgminer reports the same 870 Kh/s, yet HashCows mining KrugerCoin, the pool reports 160 ~ 200 for the full round. Where is the remaining hash rate going? Rejects, stalls, lag and God knows what more ...

I suspect I'll stick with my setup of switching to the most profitable WITHIN a subset of "good" pools/coins, now that I had the hassle to set this crap up.

No offense, h2o, but if you don't make a few changes according to requests, people will start to leave. I did.

No VARDIFF, high ping to the pool, very high difficulty combined with random disconnects makes it seem that I contribute (or waste) hash power I don't get credited for. I'm only at 870 Kh/s, but getting a few 7950's or not, depends on how decent is my mining experience with what I have now.

For sure, a crude and complex config: CGWatcher with most profitable schedule + cgminer + a pool per coin with auto payout + account at cryptsy (multiple coin addresses with auto-sell on) give me far more than your pool, and I have the info and learn which coins (or pools) seem good but end up being worthless. I'm not even using a script that fine tunes auto-mining and works as a trading bot, which could give me 20 - 30% extra or so. I had to do all this and waste plenty of time because you stubbornly ignore people's requests regarding VARDIFF.

I'm now experimenting with that HashCows pool and I will do so for a couple of days. We will see...

Indeed, that is my problem. It is pointless to mine at middlecoin for me, considering both the difficulty and the disconnects. I experimented 2 days @ 800 Kh/s and I get ~0.015 BTC

Regarding load balancing, it's a matter of not wasting available processing power while I get disconnects. When middlecoin is at high priority, cgminer get unresponsive upon a disconnect and doesn't move on to the next pool if I have it on failover

Currently I'm load balancing between middlecoin, LTC and the most profitable I found at coinwarz

I get lots of disconnects and rejected/discarded work at middlecoin. Europe is very far from West US and the difficulty of the pool is too high

I've read the thread and see that people complain about low payouts in the recent days, that they should be mining straight LTC ...

Then just do so. Or make constructive contributions. How would YOU trade the alt-coins? How do you predict that someone will dump a large amount of the coin on an exchange and make it worthless? How to decide switching from a profitable yet volatile coin?

Or setup your own most profitable coin pool, with BTC payouts.  I'll be satisfied if you charge me a 10% fee.

I'm getting crappy payouts atm, yet I have only myself to blame to not finding out and joining a few weeks ago. Not the pool operator. I've seen those fat payouts at the site and the good mood of the posts itt, dating from the beginning of August.

I have no rig to compete with the difficulty of directly mining BTC. I can go up to 1 Gh on SHA2, but it is foolish to mine, considering the heat, noise and power cost. Getting bitcoins by mining scrypt without any effort of manual trading obscure coins is a service with amazing value, let alone when the pool gives me higher payouts than mining LTC. I have an LTC pool as failover on my setup though, but I'll keep sending my humble 800 Kh to middlecoin for a while.

I have a suggestion to the pool operator: increase your fee to the point that you feel comfortable dedicating more time and effort to this project or perhaps hire someone. It is so unique and useful. I don't mind paying a (much) higher fee, specially if I could connect to an EU server. I can also help with programming or bandwidth or donations.

In all honesty, he didn't say strictly monthly payouts. He said:


That could mean each 3, 5, 7, 10, whatever days. How about passing this parameter on the password field or elsewhere (if it isn't too much trouble to support on the trading scripts), and let everyone set his own tradeoff between profitability and waiting time for payouts?