dimaze (OP)
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April 24, 2018, 09:59:40 PM
Last edit: April 25, 2018, 02:51:25 AM by frodocooper |
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https://halongmining.com/blog/2018/04/24/dragonmint-t1-manufacturing-update/Some other exciting news is, during the process of fine tuning, we also ran a parallel PCB board design to see if we could squeeze any more efficiency and we ended up with the next model of DragonMint, the T2. This has 68 chips per hashboard, rather than 63 of the T1. The miner is confidently 17TH and above, averaging 17.5TH and above. Efficiency is still being tuned in firmware, and as we are seeing it, range between 93W/TH and 100W/TH at the wall right now.
The T2 has an integrated power-supply, so the device is now plug and play – no more fiddling with long power cables from the PSU, nor will the cables potentially get in the way of the fan airflow.
Here's the current hashing boards on the T1, they are adding 5 additional chips and integrating a PSU: 
Moderator's note: This post was edited by frodocooper to correct erroneous quote formatting.
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fanatic26
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April 24, 2018, 10:05:36 PM |
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An integrated power supply is a TERRIBLE idea, I hope that they reconsider.
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Stop buying industrial miners, running them at home, and then complaining about the noise.
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dimaze (OP)
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April 24, 2018, 10:08:10 PM
Last edit: April 25, 2018, 04:38:51 AM by frodocooper |
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Here's a picture that was shared today: 
Moderator's note: This post was edited by frodocooper to reduce the size of the embedded image. |
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fanatic26
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April 24, 2018, 10:14:25 PM |
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Every time I have ever set a PSU on top of a miner both run hotter than before, this looks to be no different :/
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Stop buying industrial miners, running them at home, and then complaining about the noise.
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CryptoCrane
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April 25, 2018, 12:08:08 AM |
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Wow, that was a fast turn-around from the T1 to the T2. I can't wait to do a review!
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dimaze (OP)
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April 25, 2018, 12:45:55 AM |
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They said T2's are going on sale when T1's ship out.
I'm mixed on the integrated PSU, leaning towards liking it. Quicker setup time!
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-ck
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Ruu \o/
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April 25, 2018, 01:26:50 AM |
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They said T2's are going on sale when T1's ship out.
I'm mixed on the integrated PSU, leaning towards liking it. Quicker setup time!
The myrig PSUs are too noisy compared to the T1 if you run it in efficient mode. A good efficient ATX power supply is much quieter and if noise is an issue and you plan to run them in efficient mode, having the PSU incorporated is a disadvantage. On the other hand, most hardware is so loud these days that almost no one is trying to run them in their actual home. The T1 in efficient mode with a quiet PSU can be run in your home or garage over winter (but not in the same room as you.) |
Developer/maintainer for cgminer, ckpool/ckproxy, and the -ck kernel
2% Fee Solo mining at solo.ckpool.org
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philipma1957
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'The right to privacy matters'
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April 25, 2018, 03:13:50 AM
Last edit: April 25, 2018, 04:37:36 AM by frodocooper |
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I deleted all posts of mine in this thread. and will try to post this in a different way below is a new photo /screenshot with alterations in red showing what I think is a short hazard in the new model T2 so to Halong I ask will the terminals be shielded I will also put the link to imgur 
Moderator's note: This post was edited by frodocooper to reduce the size of the embedded image. |
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Sandal_Hat
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April 25, 2018, 04:22:37 AM |
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Would be better to make it removable just in case the PSU dies. If it is separated, one can just swap the psu. I dont see wats so hard about plugging in a PSU. I had one old psu go down so far and the other one didnt work so well. The miner lives.
Just my 2 cents
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Selling 100 dollar coupons (8units expire 11th June, 14 units expire 1st july) and 125 dollar coupon (2 unit exp 30th June). Selling at 20% of value
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philipma1957
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April 25, 2018, 03:04:31 PM |
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Would be better to make it removable just in case the PSU dies. If it is separated, one can just swap the psu. I dont see wats so hard about plugging in a PSU. I had one old psu go down so far and the other one didnt work so well. The miner lives.
Just my 2 cents
I like that they added a few chips. I am not a big fan of the forced psu. It looks like there is a short hazard. It will cost more to ship. If it is a MyRig Psu it is 1600 watt max I rather use a delta 2400 watt. If I can get one I will test it out and see if I can get rig of the short hazard. Meanwhile I kept the 5x T1's sent to me. I will be paying for them today. |
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promojo
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April 25, 2018, 09:23:45 PM |
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Hello everyone; it's promoJo again.... The guy who was suppose to bring you the DragonMint T1 review back in December but couldn't (for good reasons). I would now like to present to you a picture of the T2. This is very exciting for all us miners and the whole community. I hope you are excited as I am to have one (or a couple hundred). Cheers. https://imgur.com/a/g2JWzIJ (DragonMint T2 Miner hi-rez image) |
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fanatic26
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April 25, 2018, 09:26:48 PM |
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So if we go by their track record they will ship these running at 16TH since that is officially 'within spec' like with the T1
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Stop buying industrial miners, running them at home, and then complaining about the noise.
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dimaze (OP)
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April 25, 2018, 09:43:26 PM
Last edit: April 25, 2018, 09:56:36 PM by dimaze |
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Here's more pictures that were shared today:   |
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philipma1957
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April 25, 2018, 10:00:48 PM |
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So if we go by their track record they will ship these running at 16TH since that is officially 'within spec' like with the T1
not one of the six I had did 16.0 at 1480 watts. that is 0.0925 they all did do 14.00 th at 1300 which is 1300/14000 = 0.093 watts a gh that 0.093 is good. if these do 1575 watts over 17000 it would be 0.0928 I think the gear won't do this even with the 5 chips and better software. My guess is it does 1500 watts at 16000 gh or close to that. which is spec for the T1. my issue would be I don't want 1500 watt miners 1300 watt are better as 4 go to a 30 amp circuit. |
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sidehack
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April 25, 2018, 11:29:14 PM |
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I wonder what any of that means. 68 chips doesn't make a lot of sense unless it's a 17x4 running with a full-string voltage around 7V. Maybe by parallel they mean two-phase regulator to handle the current more efficiently? Or two separate strings (17x2) per board, independently tunable?
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philipma1957
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April 25, 2018, 11:38:01 PM |
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I wonder what any of that means. 68 chips doesn't make a lot of sense unless it's a 17x4 running with a full-string voltage around 7V. Maybe by parallel they mean two-phase regulator to handle the current more efficiently? Or two separate strings (17x2) per board, independently tunable?
It would be nice if they get them to do 17th at 93watts a th but it would be hard use on a 1600 watt psu. |
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sidehack
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April 25, 2018, 11:55:14 PM |
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I think it would be nice if anyone built a sub-KW miner ever again, since not everyone has 1600W PSUs laying around.
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philipma1957
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April 26, 2018, 01:41:10 AM |
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I think it would be nice if anyone built a sub-KW miner ever again, since not everyone has 1600W PSUs laying around.
yeah 800 watts would be nice. But even something in the 1200 to 1300 allows 4 in a 30 amp 240 circuit. and 1 in 15 amp 120 volt circuit. Now a lot of miners are 1400 to 1700 watts which kind of stop a 120 volt psu in its tracks. I have owned Evga 1600 g2 evga 1600 p2 evga 1600 t2 cosair ax1500i rosewill tokamok 1500 titanium. every one sags under 12 volts running an s-9 11.94 to 11.97 are the most common spots they drop to. |
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numnutz2009
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April 26, 2018, 05:20:33 PM
Last edit: April 26, 2018, 07:55:09 PM by frodocooper |
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that t2 psu seems sketchy though. i thought integrated psu would mean soethin like a server that can be swapped in and out like a server psu can. this is just a psu attached to the top or side of the miner case but we shall see. exposed full metal terminals dont seem safe.
Moderator's note: This post was edited by frodocooper to remove an unnecessary quote and an off-topic portion.
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dimaze (OP)
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April 26, 2018, 09:44:18 PM |
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I think it would be nice if anyone built a sub-KW miner ever again, since not everyone has 1600W PSUs laying around.
That'd be nice for beginners. Best bet right now is to detune existing ones, unfortunately these don't offer precise tuning yet. |
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