Synereo on CNBC this morning:

http://www.cnbc.com/2017/06/21/israeli-blockchain-companies-that-shoot-for-the-stars.html

Hey all! I'm getting lost in all this. Is there a separate ANN page for MobileGo tokens? And when is the ICO happening and how can I be a part of it?

Thank you

EDIT: agh! I just realized that it looks to be over https://crowdsale.mobilego.io/crowdsale I assume that these tokens will show up on exchanges soon?

It's happening! 

Wow you're right! Thank you!
I should have looked better

Hey everyone! I'm looking to purchase a bunch of AMP tokens. Could someone please point me to the best place to do so? I searched around and a couple exchanges seem to have them but not very large volumes. Thank you

Any news on the OSX wallet?

Where the hell is the source? DEV?

He shouldn't be if he's responsible.

BlitzCoinDev, hey man, I encourage you to get in the IRC channel and start building some buzz! It's really dead in there...

You had PLENTY of time to compile and finish your damned work before this launch. After seeing coin launches fail one after the other, all you new "devs" really need to wake up and act responsible for once.

Just because you left studying till the last minute and crunch before your big exam in school doesn't mean you should carry this behaviour over to things like like.

Grow up.

Hey everyone,

My latest rig issue is the following...
After hours and hours of mining my rigs randomly have the 2nd PSU shut down and mining of course stops. Giant fans are blowing onto the rigs and are keeping fans running ~40% at 73-75C.

I have 2 280x cards on PSU#1 (including mobo/cpu/risers) and 3 280x cards on PSU#2. They're connected by a simple splitter cable.

I thought this has to do with overclocking or overheating so I measured the watt pull at the wall:

Cards - Sapphire DUAL-X 280x - Hynix memory - stock gpu = 1020Mhz
Power supplies - Corsair HX850 Gold+
Each rig on it's own 15A circuit!

PSU#1 - 888W (2 cards)
PSU#2 - 650W (3 cards)
Gpu - 1060Mhz
Voltage - 1.225v
Hash - 735kh/s
Temp - ~75C

i 13, TC 11200, gpu 1060, mem 1500

I then undervolted them and turned down the clock on them. I also moved two risers over to the second psu to balance it out more and here's my measurements:

PSU#1 - 645W (2 cards)
PSU#2 - 710W (3 cards)
Voltage - 1.150v
Hash - 720kh/s
Temp - ~75C

i 13, TC 11200, gpu 1040, mem 1500

And the issue STILL happened?! I'm running out of ideas and I'm completely stumped. Any ideas? This is happening on multiple rigs with the same setup.

Thanks,
llama

Thank you!

I do agree that PSU #1 running 888W at the wall and 773W to the components is close to 850W. So i've gone ahead and undervolted the cards to 1137mV and I'm testing.

I'm happy to say that PSU #1 is now running at ~800W at the wall, which would make it 696W to the two cards, mobo, risers. Does that sound better? Should I move some risers to the other PSU? I'm just afraid of problems involved with that.

Also, do you think it's possible that by overloading PSU#1...it could have killed PSU#2?

Hey everyone,

I'm still on my quest to figure out why my rigs are shutting down and after lot's of testing and measuring today, I think I've come to the conclusion that my power supplies are NOT the issue. So in order for me to confirm this, I ask the help of you power supply gurus who know your current/voltage etc.. very well.

5x 280X card rig is split up between two HX850 (Gold Plus) power supplies. So I've got 850*2= 1700W to work with!
Now, the way I understand it is that IF the power supplies are running at full load, the gold plus rating means that they are 87% efficient.

The whole rig measures ~1550W at the wall -> 1550W*0.87 = 1349W supplied TOTAL to the components.
PSU #1 (two cards, mobo/cpu/hd, all risers) measures ~888W at the wall -> 888*0.87 = 773W TOTAL to components connected to PSU 1
PSU #2 (three cards) measures ~650W at the wall -> 650*0.87 = 565W TOTAL supplied to the last three cards on PSU 2.

Seeing 773W and 565W going to either PSU tells me that I'm way below the rated 850W, so I should be fine? Am I correctly calculating all of this? If someone could verify and let me know, I'd greatly appreciate it.

If that is the case then I'm still baffled and confused why my rigs randomly turn off and I have to reset them after a day, a couple days, or even a couple weeks of mining?

Thoughts?
Thank you!
llama

Hey!

I tried flashing because I thought it would be the best and most stable. But I'll try software today. However, if flashing made the rig unstable, I'm not sure if software will be much better

So the crash takes quite a while actually! Sometimes the rig will run for two days (zero HW errors, less than 3% rejects, running smoothly) and then drop off! I'll go and check on it and all the GPU fans are on, CPU fan is on but the system is not responding so I have to hard reboot it...then it runs again!

Or sometimes the rig drops off but when I go check on it, the OS is still working but cgminer failed because the 2nd PSU died causing three cards to turn off.

I did run a couple rigs before without the splitter using the paperclip method. But I feared that backfeeding is what burned a couple risers after turning one psu on before the other.

The CPU is a socket 1150 3.0Ghz G3220 and I have 8GB 2x4 GSkill ram in each.

Thank you so much for helping!

Alright people, here's an update:

Please see if there's something I can do or something I'm missing. I'm losing my mind and sleep over this.

I'm ready to reward someone in some way if you help me out with this...

Let me re-iterate what I've got setup with some more details:

I've got 10 rigs all setup with five Sapphire DUAL-X 280x cards and I've followed The Stilt's instructions after reading his very informative and educated guides.

My rigs are setup as follows:

- 5x Sapphire 280x DUAL-X Taihiti Memory (1020Mhz clock stock, 1.225V stock voltage)
- Cards show ASIC quality anywhere from 65%-70%
- 5x powered risers (ribbon)
- 2.8Ghz 1150 CPU
- ASrock H81 Pro BTC Mobo (since I'm powering risers, I omitted powering the two extra molex on the mobo)
- Basic sata HD
- 2x Corsair HX850 Gold+ PSU's
- Windows 8.1, latest Catalyst
- each rig on it's own 15A circuit!
- Measured running ~1525W at the wall measured with killawatt (which is already close to the max 1600W the circuit can handle)

Power is split as follows:
- Primary HX850 PSU:    Mobo, CPU, HD, 2x 280x cards, ALL risers
- Secondary HX850 PSU: 3x 280x cards

My settings are as follows:

-I 13 -g 2 -w 256 --thread-concurrency 11200 --gpu-engine 1060 --gpu-memclock 1500  --temp-target 75 --auto-fan

I get ~735kh/s & 75C at these settings and this is the MAX I can squeeze out. I tried TC 8192 like Stilt suggests but these cards are much more stable and don't get sick at 11200.

Here's my problem...
At these settings, the cards are pulling 300W EACH (I'm including the riser in this measurement as well). Which is way too much for dual 850W PSU's to handle, so I thought I could undervolt them as before buying them, I double checked online and people had success with this model. Running these cards at stock voltage with my settings eventually causes rigs to shut down on their own so I know it's the power. I ruled out risers and cards by swapping out. I recently even had one of the secondary PSU's shut down and puff smoke due to me testing three cards on it (3x300W = way more than one 850W PSU can handle).

I extracted the BIOS: https://www.dropbox.com/s/kycqagwn3fdjx2l/Tahiti.rom
I edited the bios to drop the voltage using VBE7 and tried every possible configuration and flashed the cards using atiflash successfully (these cards have a button where I flashed the secondary BIOS).

I edited fields #6 and #0 in "State 1 - Performance" with values 1200, 1188, 1150, 1163, 1088, 1131, 1100. I then ran my batch file to test. The rig power pull was great! I got it down to 1400W or even 1360W at some of these voltages...but.....ALL of these values caused either drivers to crash, some cards to not hash at all or cards eventually go sick. I also dropped my engine clock to 1020 (stock) at these lower voltages to see if that would help...but it didn't.

The ONLY "undervolt" that runs fine is 1200, but that's incredibly close to the stock 1225 and doesn't make a difference in power draw

So my options are to either take one card out but I still don't know how I would split up the load. Get bigger power supplies, but I'm already maximizing the circuit. Drop the hash...I dropped the core to 1020Mhz to see how much power I'd save, but it's barely 80W for the entire rig. Or hopefully you can help me with some magic to find the happy configuration.

TL;DR: Please help me find a way to comfortably run 5x 280X GPUs on dual 850W PSUs on these rigs.

Sorry for the novel, but you guys are honestly my only hope. I don't know what else to do or who to turn to. I tried sending The Stilt a PM but understandably his message box is locked.

I've spent so much time and energy building this that I would hate to stop all this and sell off my parts....

Thank you for reading this and I really hope I'll hear from you.

Sincerely,
llamabucket

Alright so here's the lowdown. At the settings I'm running here is what it looks like at the wall:

rig with 1GPU @ full load = 320W
rig with 2GPU @ full load = 623W
rig with 3GPU @ full load = 914W
rig with 4GPU @ full load = 1200W
rig with 5GPU @ full load = 1525W

623-320 = 303W
914-623 = 291W
1200-914 = 286W
1525-1200 = 325W

So it's fair to say that my cards are drawing about ~300W per card...which is more than I anticipated!

Based on what you guys have said, my dual HX820 Gold+ PSU's are 87% efficient at full load.

So taking the wall reading: 1525W*0.87= 1327Watts

Does this mean that the rig is pulling 1327W TOTAL then?

So my HX850W PSU's are only 87% at full load, correct?
If that's the case then. .87*850 = 739.5W

Then 739.5*2=1479W total for two units in a rig. Basically, I should figure out how to run my cards so the rig stays below this level and all should be well?

Sorry, yes the 1050W is what I meant.

I'm not well educated about all this % efficiency stuff so this is interesting. So you're saying that at the wall is going to be different than what it's actually drawing?

I'm going to test out what one card pulls right now by testing the rig with one card, then adding another and taking the difference. I have the GPU's running at these settings:

i13, GPU 1060, MEM 1500, Powertune +20

The cards are maxed out with these settings so I'm guessing I'm REALLY pushing them! Also, I'm having a really hard time figuring out how to properly undervolt. cgminer shows one value and GPU-Z shows another (while mining I see cgminer showing 1.175V and GPU-Z fluctuating between 1.031-1.035V VDCC, are these supposed to be the same?).

When I change voltage in afterburner or trixx or whatever, where should the value change?

I really appreciate your help nachius and money! I'm losing sleep over this

MoneyMorpheus, thanks for the help.

The 1st PSU isn't dead, it's the 2nd one that turns off! All my cards are running at ~75C so that shouldn't be a problem. I'd LOVE to undervolt these cards but it seems none of them are reacting to my undervolt settings? I tried Afterburner, Trixx and in cgminer with no visible change in voltage within cgminer!?

Maybe I'm doing it incorrectly. I'll try again today with all those apps and see if I have better luck, and I'm also going to try and measure how much one GPU draws at the current settings and get back to you.

Also, MoneyMorpheus, how do you explain the more powerful 1020W PSU also turning off with three 280x cards?! It should be more than adequate!

I just woke up to other rigs starting to turn off...sigh.

After chatting with some guys on IRC, some are suggesting that the 2x cards running on the secondary psu may be overloading it. People say that an OC'd 280x can draw close to 300W...in which case that would make sense.

However, why did my 1020Watt PSU ALSO die with 3x 280x cards plugged into it?

Any input?