 Show Posts
|
|
Pages: [1]
|
|
Don't order anything from Black Miner.
I've had a horrible experience with them, and they refuse to resolve the issue.
In February I pre-ordered their 6MH scrypt miner. When I got it, first of all I had to pay an import tax of $60 since the package was from Romania.
Basically what I got was a computer tower with 18 5-chip gridseeds loosely thrown in there and wired. Of course everything was broken from shipping (and the packaged wreeked of cigarette smoke).
Power supply was 220V (which I can't even use here) and even the Raspberry Pi inside was dangling by a screw.
I managed to salvage what I can, but was left with 3 broken gridseeds and no power supply. I contacted Black Miner and they refuse to respond, or do anything at all.
Whatever they're selling, find somewhere else to buy it. GAWminers has similar equipment at good prices, US based customer support, and fast shipping.
|
|
|
|
|
Don't order anything from Black Miner.
I've had a horrible experience with them, and they refuse to resolve the issue.
In February I pre-ordered their 6MH scrypt miner. When I got it, first of all I had to pay an import tax of $60 since the package was from Romania.
Basically what I got was a computer tower with 18 5-chip gridseeds loosely thrown in there and wired. Of course everything was broken from shipping (and the packaged wreeked of cigarette smoke).
Power supply was 220V (which I can't even use here) and even the Raspberry Pi inside was dangling by a screw.
I managed to salvage what I can, but was left with 3 broken gridseeds and no power supply. I contacted Black Miner and they refuse to respond, or do anything at all.
Whatever they're selling, find somewhere else to buy it. GAWminers has similar equipment at good prices, US based customer support, and fast shipping.
|
|
|
|
I have a cube that was constantly shutting off after running for a while, no matter what I did. I narrowed it down to being an issue with the cube detecting a running fan, even though I used different fans and they all ran fine. So basically, I just soldered a jumper across the bottom of the board, across the relay NO contacts. Now, the cube powers up and stays on all the time! Just make sure to keep an eye on the fan, because if the fan dies, your cube will probably burn up! http://imgur.com/tdBei0NThanks for posting this solution. I just added a jumper to my cube and we'll see how it goes but everything looks good so far. EDIT: Just turned off  Mine just turned off after months of working after I installed the jumper. Took it apart and found that the jumper had burnt itself off http://imgur.com/pkvbbpf due to my crappy soldering job. Replaced it with a real copper wire jumper and realized the solder used on the circuit board required longer contact time (higher heat) to melt. Anyhow after the new jumper was installed the unit's now back up and running. |
|
|
|
|
The Cryptsy contract mining doesn't mention any maintenance fees. That'd be a huge advantage over cex.io with current maintenance fees around 20% of all profit.
|
|
|
|
I just got 20 Gridseeds a couple days ago with a Rasp Pi. At 850 MHz, almost no HW errors. I'm expecting around 7.2 MH (360 kh/s x 20), but Scryptguild says I'm getting around 6.2 to 6.5 MH. It's been hashing for 48 hours. Lots of rejects though (anywhere between 6 to 10%).
Even so, would that account for an almost 1 MH/s discrepancy?
PS: Also tried it at 800 Mhz. Expected rate should be 6.8 MH/s, but I see 5.8 to 6.2 MH/s on Scryptguild. All units are hashing away with little to no HW errors either.
What mining software? Cgminer I'm seeing around 6.7 to 7.0 MH with 20. It's strange, I have drop offs I can't explain, it looks like it's running, I see shares submitted by all attached units on the display but the ScryptGuild Dashboard says otherwise. If I start/stop cgminer the speed picks up for 9-10 hours, then I see it dip on the graph and cycle again. Time for a cron job I guess. Or I was thinking about breaking them up over a couple to see if I can narrow down the bad "seed". I see the same. I set minimum difficulty at 256 and before it auto adjusts to 512, rejections were lower. I get about 6.8 to 7 MH for the first few hours then it drops as low as 6.2 MH. As for intensity, I don't think there is an intensity setting for Grid seeds. And the Scryptguild has rate estimation explanation doesn't account for a full MH missing. I have GPU hash rates that are closer to the reported hashrate on cgminer. I'd like to know how to create a schedule to reboot or restart cgminer. If you're using Windows, this can be done really easily with some batch files and Task Scheduler. |
|
|
|
If you could get your hands on a 1TH machine TODAY, what pool would you choose?
Half the power on p2p pool, half on bitminter. Whats your reasoning behind this? Why not just throw it all behind Ghash, Eligius or BTCGuild? They're big pools, but you'd be rewarded with blocks more frequently. |
|
|
|
|
If you could get your hands on a 1TH machine TODAY, what pool would you choose?
|
|
|
|
I have a cube that was constantly shutting off after running for a while, no matter what I did. I narrowed it down to being an issue with the cube detecting a running fan, even though I used different fans and they all ran fine. So basically, I just soldered a jumper across the bottom of the board, across the relay NO contacts. Now, the cube powers up and stays on all the time! Just make sure to keep an eye on the fan, because if the fan dies, your cube will probably burn up! http://imgur.com/tdBei0N |
|
|
|
|
You're spending WAY more on electricity than that graphics card will ever earn you. You'd be better off with a USB miner (~$20 on ebay) but even that will never pay for itself either.
|
|
|
|
Did you finally get your reward from ghash.io? Or not?  I did.  |
|
|
|
If you've got that much GHS held up on Cex.io, I'd dump them all and cash out my BTC. Visit https://cex.io/maintenance. Right now with the current difficulty, you're paying 12.27% of all your mining profit to maintain those GHS's. Just a few weeks ago it was at ~4%, and the maintenance fees will keep climbing with the difficulty. Soon the maintenance fees will be so high it'll no longer be profitable to own those GHS's, and they will become worthless. Good luck trying to sell them at that point for anything close to what you paid. Right now cashing out 800GHS will yield you about ~18.5 BTC (@$570/ea) = ~$10,500. Hold onto the BTC and let the price appreciate, or sell out and invest that money somewhere else. My $0.02 |
|
|
|
Please change vardiff back lower... at least to 128! I have 25 workers all around 40 kHash/sec. Noticed a drop in shares since the 512 hardcode. edit: after looking this over my shares are pretty much the same. I do have more variance though. see http://imgur.com/ZIk5lHL |
|
|
|
|
