A4 Dominator - Pre-Order Group Buy - 280mh, roughly 1000w, $1800 + shipping

[Longsnowsm]

Just had a board disappear.  Stopped the miner in the UI, lowered the mv to 800 from 810 that it came from Inno as.  Just restarted.  Hopefully it will become stable and run through the night. 

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[Searing]

Just had a board disappear.  Stopped the miner in the UI, lowered the mv to 800 from 810 that it came from Inno as.  Just restarted.  Hopefully it will become stable and run through the night. 

you might want to bug the A4 mnfg folks to get the firmware updated....probably folk already are...
it not being open source and all...this kinda thing was fixed on the titan cubes by gen tarkin
3rd party software

so no access ...no fixes ..unless the A4 mnfg does it or kicks out a way for a 3rd party to do so

KNC really did not give a damn...on this with 20/20 hindsight it ..sucks when they just go down
and only thing was a power down reboot...you practically had to 'live' with the units..and just expect
cubes down overnite..(again titan firmware when it first came out)

good luck ..you'd think they'd open up the specs on this stuff for you all to mod stuff or improve
their A4's ...it would be in their long term goals..but who knows...if that was the case why was
it not open source to begin with and/or so shoddy?

[vinylwasp]

Just had a board disappear.  Stopped the miner in the UI, lowered the mv to 800 from 810 that it came from Inno as.  Just restarted.  Hopefully it will become stable and run through the night.  

Keep an eye on temp. In this earlier press release from Inno: http://www.innosilicon.com/html/news/14.html they say: "In addition, newly added system reliability features that allow for maximized performance under any condition, such as automatic temperature and frequency control,as well as DCDC-less automatic on-board chip pass/fail self-test, maximize system performance and avoid heat damage"

I read that to say they've implemented some temperature fail-safes which may either lower voltage, throttle Mhz (hash rate) or when they hit a certain threshold, kill the card. I've been running two test A4's in two different locations (home and workshop) and have different experiences in each. The one at home just exhausts into a fairly cool room (but I don't move the air away), while the one at my workshop has a fan behind it blowing air at and over it so that it carries away the hot exhaust (it's a 350 sq/m building with 30 foot roof so plenty of volume to absorb and dissipate the heat).

And guess what, the one at home gets into the high 40's/low 50's in less than a hour and then hashrate drops and sometimes a card goes offline (different ones) while the one at my workshop runs in the high 30's/low 40's keeps chugging away. Last night I had it running for 6 hours on ProHashing with an average hashrate of 281.5 (on pool).

I might try the test again mining a single coin with fixed difficulty to remove any variables. If you add some environmental cooling let us know if it helps.

Cheers

[berron]

Fraud Alert:
This is to announce that Innosilicon do NOT have a reseller called “Yang Rongdai”.
https://www.asicminermarket.com/
Skype：yangrongdai
Facebook: Simon Yang

Any sales info from him is a fraud.

Recently we have found faked reseller claiming to sell A4 product online.  Please note that the only authorized reseller is Innosilicon itself.

If you want any sales info verified, you can go to our website. Without that correct Innosilicon email address, you take your own risk.

We do NOT have any so-called reseller globally.
Do NOT send money other than Innosilicon account.

Be aware of Asicminermarket, they sold me a defective Baikal Miner, not updatable probably due to a problem with USB port, and  when I have reported them the problem they simply have disappeared. My advice is not to use them as resellers of anything. Simply scammers.

[Eyedol-X]

The settings were already there at 810mv and 1200mhz.  All I had to do was put in the settings for my pool and fire it up.  So far on the pool side it is reporting 260-261mh.  Now to just monitor it and see if I have any of the issues you guys have been seeing with boards dropping.  I will keep you guys posted. 

Interesting yours came with with 810mv and mine came with 815mv.

I wonder why they have such discrepancy in configs.

Would be nice if Innosilicon would chime in here with an official voltage setting for 1200mhz.

[usao]

mine came in set at 800, but Chloe told me to use 815.
Seems to run better at 815/1200. Still have dropping boards, but I think it's temp related as they run around 52C-53C.

Just got a software update from Chloe, will see about trying that after work to see what changes it offers.

[citronick]

Frankly... after reading through the feedback on the A4s... I think I will use my funds to get more gear for ZEC, at least I have good aftersales there.

I had my own experience with A2s, and frankly, I cant afford to "experiment" with A4 -- I had high hopes on A4 being a top notch performer and build quality.

[Eyedol-X]

mine came in set at 800, but Chloe told me to use 815.
Seems to run better at 815/1200. Still have dropping boards, but I think it's temp related as they run around 52C-53C.

Just got a software update from Chloe, will see about trying that after work to see what changes it offers.

Is this a public available update or is this something you got just for testing?

I assume you are speaking with Chloe via Skype or e-mail? Can you share this update?

[Eyedol-X]

Frankly... after reading through the feedback on the A4s... I think I will use my funds to get more gear for ZEC, at least I have good aftersales there.

I had my own experience with A2s, and frankly, I cant afford to "experiment" with A4 -- I had high hopes on A4 being a top notch performer and build quality.

Thus far, I'm happy with the performance of my A4 and I expected some quirks with the software being an early adopter of the product.

While there is some opportunity around the software, I would definitely purchase mine again.

I will say I am a little disappointed to see how bad the software is with the A4, not sure why there is such a huge gap in the wrong direction between the software of the A2 vs the A4 but I expect they will fix and improve it with time.

I guess I need to pick up an SD card reader so I can get ready to update the software for my A4 as I assume we can't do that through SSH.

[Longsnowsm]

Brand new product, pre-release product... You have to expect there are going to be some growing pains.  I would say if you are not ready to be on the "bleeding edge" then wait until a few updates come out and we have it ironed out.  I have yet to see or hear of a miner that has not gone though this exact development cycle.

So far 14hrs up and holding steady.  Temps have been 53-55c all day. 

[QuintLeo]

Just had a board disappear.  Stopped the miner in the UI, lowered the mv to 800 from 810 that it came from Inno as.  Just restarted.  Hopefully it will become stable and run through the night. 

 Wrong direction, per what folks are saying - should have gone UP a few mv.

 Undervolting tends to make solid state hardware LESS reliable, as long as you're not overheating.



 As much as  I like the reliability on my A2 units, the software was never particularly impressive.

[Eyedol-X]

Approaching 48 hours now without an interruption running 1200mhz @ 815mv

[Eyedol-X]

Approaching 48 hours now without an interruption running 1200mhz @ 815mv

Well, it made it almost 48 hours straight without an issue.

3 cards went down in the last hour or so, attempting to restart now.

Edit: Stopped Miner for about 2 minutes, started it right back up with same settings.

Where can I get that software update? lol

[Longsnowsm]

My A4 has been stable now for 19+hrs without any more card drops.  However my hash rate has continued to fall and is averaging between 240-250mh on Litecoinpool.  It seems to have settling in at that hash rate which really isn't too impressive.  When you first start the miner it takes off like a shot and you see really good rates fly up to 280-290mh, then it declines from there for me. 

I hope the firmware updates can help address the dropping cards and the declining hash rates.  It if continues to stick at this level of hash then we may need to talk to Inno about their plus or minus hashing guarantee.  I see reports some others are having the slowly declining hash rate also so I don't think this is isolated to just me. 

[nicky1088]

I'm guessing I shouldn't buy one? So much for "Farm-Grade" reliability

[Longsnowsm]

If you aren't prepared to do some "bleeding" on the edge, then wait for a bit... 

[firehawk71]

My A4 has been stable now for 19+hrs without any more card drops.  However my hash rate has continued to fall and is averaging between 240-250mh on Litecoinpool.  It seems to have settling in at that hash rate which really isn't too impressive.  When you first start the miner it takes off like a shot and you see really good rates fly up to 280-290mh, then it declines from there for me. 

I hope the firmware updates can help address the dropping cards and the declining hash rates.  It if continues to stick at this level of hash then we may need to talk to Inno about their plus or minus hashing guarantee.  I see reports some others are having the slowly declining hash rate also so I don't think this is isolated to just me. 

I am on litecoinpool also and mine does the exact same thing except it does not always shoot up on start. Sometimes it will start on 240mhs and then over a few hours it will climb to about 250mhs.

[nicky1088]

If you aren't prepared to do some "bleeding" on the edge, then wait for a bit... 

I mean i understand that its new so there is going to be problems, but i think i see why they only take wire. They dont want people to request refunds on their miners since they arent performing to what they said they would be achieving. It would be better if they took paypal/credit card and actually stated "Hey! this is new technology! You may have problems and/or get less mh/s than we advertised" AND if they made the software open source so people could edit it. It also didnt seem right when i asked them "What if it has a problem with the software when it arrives" and they responded by saying "It wont have a problem". Also when you said that the boards died do you mean that they broke, or that you just have to restart the miner?

[nicky1088]

I mean, I still would love to buy one of these, but i dont like wire transfers. I would happily buy one if they took paypal. I cant imagine how many customers got turned away because of them only taking wire transfer. The main thing that is there is no security as a buyer. how do i know that the miner wont die on the 46th day after i receive it! If someone here knows a way i can wire transfer with credit card/debit card (No, im not going to pay someone random or spend $2400-$2600 to buy one unit on a reseller site) please tell me.

[nicky1088]

is innosilicons website down for anyone else? It seems that they messed up their dns