Topic: Reviewing the Halong Mining DragonMint T1, a 10nm Bitcoin Miner - page 2. (Read 1883 times)

Thanks in advance. If you can't do this with the unit open then just measure the voltages on those heatsinks that can be reached through the case openings with the case closed and just the fans temporarily moved aside.

Updated the OP with a close up of the Zynq chip there - second to last picture there on the teardown section. Let me know if any of you want any other closeups!


I'll try to accommodate this. Unit wasn't friendly with me when I had the fans disconnected or even connected, will try a workaround.


Good question! I actually lost hashrate with the new firmware. It went from slightly above to below spec with the update. My recommendation at this point is if you have a unit that is hashing around spec, don't touch it with any firmware updates just yet. Halong indicated they're working on firmware updates to alleviate this issue. The GUI had welcome additions, such as individual chain ASIC status charts and a firmware checker, along with autotune capabilities. I'll throw those up here in the OP shortly.

It  gives better graphics  

maybe a little better power draw.
maybe a little better hash.


say  1650 watts at k-watt meter
say  15540 gh


vs  
1679 watts
15300 gh


this particular unit  is the one I tested  on old firmware with 3 psu's

I need to  check  power again

i am now at

1640 watts
15540 hash

0.1055 watts a gh

 

Hi,

Does the dragonmint T1 new firmware offer any improvements in hashing speed, or was it to update a different issue?

Thanks!

Measure the DC voltage (if any) between the individual heat-sinks; while operating, but open, with additional external desktop fan providing additional cooling.

Based on what theory?
They are Samsung 10nm chips.

These ever smaller nodes are geared for low-power applications -- NOT high power ones like mining. The overall power involved raise die temps far beyond what the Foundries processes are designed to allow for. As a result the only way to make the miners stable is to sandbag the operating parameters and that means a lot of *possible* efficiency gains go right out the window. Props for mining chip makers trying to push the envelope but as usual the Real World pushes back - hard.

The Ebang 10nm miner is another example of designs gone wrong...

As for theoretical gains AB may give -- so far not as-advertised...

I'll tear it down again soon and add a few more detailed pictures If anyone wants anymore details, let me know here! I'll update the OP with some additional details later.


6 months from the point of shipment - more information on the terms of sale page here

Yoshi did confirm it was Samsung and 10nm! More details this tweet

Halong is also the only miner manufacturer I've seen take this many payments options. In addition to the standard Wires/BTC options, they take BCH, LTC, ETH, XMR, DCR, USDT! Great to see a manufacturer accept the currency they sell miners on. A good thing!

Yoshi Goto (MyRig) has mentioned that it is 10nm chip and that the foundry is Samsung.

This isn't 10nm is it?  I thought it was 16nm

Look, if you assume a 10nm chip designed as well as the S9 chips, you should be getting about 20TH @ 1400w. 

If version rolling ASIC boost adds another 20%, you should be seeing ~24th at that power. 

My speculation is that this is a 16nm clone of the S9 but with the ASIC boost counteracting a worse chip design to bring a *very* slight increase in efficiency.

As much as people hate Bitmain, they do seem to have the best chip designs.

That's 6.25% less than S9 on APW3++ is about .112 watts per 1gh at the wall, better efficiency indeed.

Never looked at the reviews of the s7 or s9 despite them being several years old now??
The t1 has same layout and lazy/brain-dead heatsink design that makes for them being LOUD due to all of the turbulence created by so many leading/trailing edges on that mass of individual sinks.

ref the Canaan Avalon repair guide for example of correct thermal design.

I've never seen a teardown of a Bitcoin miner before and was amazed to notice the sheer amounts of Heatsinks on the PCB. It would've been nice if all the cables came braided or with some outer protection for the PSU wires. The 14AWG power cable looks pretty good. I'm pleased to notice the front end as well which looks fairly simple to configure and setup the connection to the pools. How many years of warranty does Halong provide for these units? Also is there a possibility to have a look at the ASIC chips and to verify if it was producted by Samsung?

all of mine are about .105 watts per 1gh at the wall.

1 has a dropped board


http://ckpool.org/users/16yLHLoeyuCLPMXkVpC3gyrRYvwRGwjKJr

first unit old firmware on this one look at 1 hr rate of 15.1t

workername": "16yLHLoeyuCLPMXkVpC3gyrRYvwRGwjKJr",
   "hashrate1m": "19.8T",
   "hashrate5m": "16.8T",
   "hashrate1hr": "15.1T",
   "hashrate1d": "142T",
   "hashrate7d": "34.6T",
   "lastshare": 1523633408,
   "shares": 5329198977,
   "bestshare": 65201213603.0,
   "lns": 5307498287.915012,
   "luck": 1.01,
   "herp": 5351461064.377117

second unit old firmware look at 1 hr rate of 15.0t
"workername": "16yLHLoeyuCLPMXkVpC3gyrRYvwRGwjKJr.1",
   "hashrate1m": "11.7T",
   "hashrate5m": "13.7T",
   "hashrate1hr": "15T",
   "hashrate1d": "9.66T",
   "hashrate7d": "2.05T",
   "lastshare": 1523633409,
   "shares": 311079480,
   "bestshare": 226462495.0,
   "lns": 310052756.1595064,
   "luck": 1.0,
   "herp": 310046022.2003531

third unit old firmware look at 1 hr rate of 10.6t this is the one with dropped board.

 "workername": "16yLHLoeyuCLPMXkVpC3gyrRYvwRGwjKJr.3",
   "hashrate1m": "12.4T",
   "hashrate5m": "11.7T",
   "hashrate1hr": "10.6T",
   "hashrate1d": "6.56T",
   "hashrate7d": "1.39T",
   "lastshare": 1523633409,
   "shares": 210180304,
   "bestshare": 196625949.0,
   "lns": 209494784.5212819,
   "luck": 1.0,
   "herp": 208768486.6223349


fourth unit old firmware look at 1 hr rate of 15.2t
"workername": "16yLHLoeyuCLPMXkVpC3gyrRYvwRGwjKJr.4",
   "hashrate1m": "16T",
   "hashrate5m": "16T",
   "hashrate1hr": "15.2T",
   "hashrate1d": "9.74T",
   "hashrate7d": "2.09T",
   "lastshare": 1523633403,
   "shares": 317464726,
   "bestshare": 1129180623.0,
   "lns": 316388009.930127,
   "luck": 1.01,
   "herp": 318588468.9164163



fifth unit new firmware look at no number yet note this is the one from a forum member.


"workername": "16yLHLoeyuCLPMXkVpC3gyrRYvwRGwjKJr.2",
   "hashrate1m": "17.7T",
   "hashrate5m": "14.3T",
   "hashrate1hr": "2.43T",
   "hashrate1d": "2.41T",
   "hashrate7d": "583G",
   "lastshare": 1523633398,
   "shares": 89727984,
   "bestshare": 128850564.0,
   "lns": 89362162.95710222,
   "luck": 0.99,
   "herp": 88289805.74712613
  },
sixth unit new firmware look at no number yet this is fro myrig/yoshi

"workername": "16yLHLoeyuCLPMXkVpC3gyrRYvwRGwjKJr.6",
   "hashrate1m": "15.5T",
   "hashrate5m": "15.4T",
   "hashrate1hr": "5.34T",
   "hashrate1d": "495G",
   "hashrate7d": "95.3G",
   "lastshare": 1523633410,
   "shares": 14209748,
   "bestshare": 11305225.0,
   "lns": 14171517.17823051,
   "luck": 1.05,
   "herp": 14845056.71371713
  }

There is a huge inductor on the PCB so it looks like
there is a DC/DC converter on board. Can you read
the chip number of the chips that are directly under
this inductor on the other side of the PCB?

THanks for the breakdown, very well made post !  Who cares if it looks the same.  BTC ASIC design is no secret anymore.  Bitmain is probably plotting to destroy the market or extract as much from it before other competitors like Halong eat up its market share, and more importantly, its hashrate quasi-monopoly.  No supply monopoly, no coin control. 

  It looks like an S9 but remember that you can find all the design files for an S9 in shenzhen if you know where to look.

  And you dont even need the design files to reverse engineer  it.  you just need cash and connections

It is not an S9,
that is just a silly statement that everybody with no technical
knowledge says.

The design is close to what Innosilicon has done with its current gen. miners, as I have stated many times earlier..

Right looks like totally copy of S9, they need to develop something new not resell with same ASCI with little bit more comsumption and Hash rate...

Slightly more efficient than proven S9.

WTF?  it's an S9 for fck sake...exact clone..with overt ASIC boost....
Big fck deal..rip off