A gridseed mini I just bought is either overvolted or very lucky.

it's GSD0 on here:



With regard to what you asked earlier it is indeed cold to the touch - but I can't confirm it's overvolted or by how much.

I do have a kind of dumb question for you by the way: what's the code to specify the chip frequency for just the fast unit? Here's the script I have starting the miner now:


I tried this to start the good miner on a higher frequency, but when I loaded the TUI they all still showed 850mhz


Im thinking that the --freq flag overrides the -gc3355-freq flag? I thought the more specific one wins in that fight but should I try this instead?
EDIT: This one just defaults them all to 600mhz...


anyway, thanks again for this great software.

Just curious, On a Raspberry Pi do the device names stay constant across reboots? I think I was accidentally sold a voltmodded gridseed (which I'd be pretty stoked about) but the fast one last time I booted doesn't seem to be the fast one this time I booted.

Good lord - what is this "P.T. Barnum's totally fair and not for suckers mining services?"

2 Grand for 200GH for 1 year? You could buy 5 Antminers and have almost a TH with enough money left for power costs.

Furthermore - if difficulty STAYED THE SAME you wouldn't make a profit at current prices.

At least with PBmining I stand a chance of coming out in the black...

At this current price and difficulty 1GH generates $0.8278 per month and is charged $0.26 per month.
If the price were to remain constant, the average percentage for current difficulty is 31.4%

At bitcoinwisdom's estimate for the next difficulty level, the percentage charged would be 34.7%

For Scrypt-only on GridSeed, sandor's CPU miner is the best in my opinion right now.

I run it on a raspberry pi and while there's not a web interface, I do remotely monitor the miner via SSH and can reboot and change pools if I need to.

In my opinion the benefit to not using autotune every time you startup the miner is that while autotune is finding the sweet spot you're going to have a slightly reduced hashrate and/or a higher HW error rate (which functionally reduces the hashrate).

In theory - one run of the autotune on a given unit should produce the optimal "profile" of the sweet-spot frequency for each chip. If you could reload that profile you would have the autotuned-frequencies per-chip without the several-hours of slightly reduced hashrate.

Now, whether there is any noticeable difference is another matter entirely. But, I'd imagine that all but the most casual of casual miners is trying to squeeze every drop of efficiency out of their hardware - so allowing the autotune to save it's conclusions regarding config - this would be appealing to many.

Just my two cents.

Profitability seems on the upswing! New coins?

I literally logged on here specifically to request adding a feature where the autotune results could be saved for future boots and I'm f'ing delighted that you're already working on this. Again, infinite gratitude for your work and skills.

That isn't even remotely a valid link 
Just FYI.

Thanks for answering the Q about multiple mini's!

Just sftpd the newest binary on there. Thanks for the update, I'll let you know if I see anything funky on RPI.

edit:I can confirm the top stats thing isn't an issue on rPi but it sounds like you had already isolated that as a windows only thing.

This is working great for me on a raspi. I just ordered 2 more gridseeds...

Would the syntax for my new script have this in it:


I'm just a little confused because in the readme you mention ttyACM1 and ACM2 being blades - but I'm not sure if I have to tell cpuminer whether the hardware is a blade or a mini. If I understand the documentation correctly it auto-detects the number of chippys.

Anyway - great work, thanks for the help. Expect a tip.

Curious. All the cards I tried have been similarly generic el-cheapo cards that worked with minepeon. I'll throw a sandisk at it and see if that helps.

So just hoping to clarify this a little bit as I have a single batch 1 X1 ordered:

You'll be offering customers in my situation a gift card for 50% the value of an x1? Do you know if this is going to be applicable only to Black Arrow hardware you sell or could it be used, say, for gridseeds?

Not trying to press the issue - I know you're in the middle on this and I appreciate everything you're doing for your customers. Just trying to clarify and plan accordingly. Big thank you.

Since every time I've tried hashra 1.4 across 3 cards and 2 rpi's it crashes every few hours giving me the
"Forbidden
You don't have permission to access / on this server."

I gave up and made my own image with a simple startup script running the new version of CPUminer with autotune.

It now has a text user interface and API json stats output, you should consider using this in the hashra image since autotune is a lovely feature.

(If anyone is interested in my image PM me. It requires configuration by manually editing the startup script to match your setup and pools but, it seems solid and autotunes per-chip.)

This is the exact same problem I am having. The PI keeps hashing away though but the web server is not accessible. If I reboot, it works for an indefinite period of time, usually a few hours.

The Pi and SD card have worked together with other images. This seems to be a problem with the image, since more than one person is having it.

Not sure if anyone else has had this problem - but after every couple hours I'm unable to log into the web interface.

Curiously I get a "The requested URL /index.php was not found on this server." error message. Seems like something on apache is borked but I can't SSH into the damn thing to do any kind of troubleshooting.

Any thoughts would be appreciated. I'm getting ready to give up and just install raspbian and bfgminer and write a script to autolaunch the miner since the web interface isn't working on this version anyway....

This is just another bitcoin Ponzi/HYIP. This should be under "Gambling" not marketplace.

Not to be a jerk - but - so then mine LTC.
I mean - I only have 600kh but I find my profits are greater on here than simply mining LTC. Your mileage may vary I suppose.

It's the basic model with the dual firepro d300's. Using asteroid for mining on intensity 12. I knock one of the cards down to intensity 11 when I'm using the machine and it doesn't slow down normal use at all.


Liquid cooling was default on the old Power Mac G5 quad core models - because the PowerPC architecture didn't scale up very well and the fast chips had huge power consumption and thermal output. The Xbox 360 ran on PowerPC chips and we all know how reliable early models were...

Anyway, in terms of how they did it, the processor assembly included all of the liquid cooling hardware onboard, it was a closed maintenance-free system. They were failure prone, and worse, the power supply on those models was in the bottom of the machine so in the event of a liquid cooling leak, the fluid would flow directly into the 1000w power supply. You can imagine how that ended up. (I used to repair these machines professionally)

Here's a link with some photos and more info. http://www.everymac.com/systems/apple/powermac_g5/faq/powermac-g5-liquid-cooling-info-leaks-issues.html

The new cylindrical mac pro is definitely not liquid cooled, (trust me, I've taken it apart) although it does use a fairly novel "Thermal core" design which basically turns the whole machine into a cooling tower and only requires one large fan. While mining i manually have the fan pegged to full speed and the cards don't get above 70 degrees celsius.

Work gave me a new tube mac pro and it's dual graphics cards pump out a nice 500kh. (don't judge me).

Anyway, just wanted to say longtime fan of BTCguild and loving the new Scrypt pool. Thanks for the hard work.