My single Phase 235 volt T21

[philipma1957]

S21 is better than T21, most of our clients choose S21 instead of T21

the s21 is not worth the extra money than the t21 in almost every case.


model s21          t21
hash   200th vs 190th
price   3780  vs 3059.    you save 710 usd the mode is about 210 so you save about 500 bucks.
watts. 3700  vs 3700


the t21 ships faster

10 th earns 50 cents a day.  so it takes 1000 days to make up the 500 extra for the s21

and I am not counting that you can sell the psu that you pull out for 250-450 on ebay


https://www.aliexpress.us/item/3256806711358754.html?


plus the power cord https://www.ebay.com/itm/186397914642?



So if you get 300 for the oem psu and the power cord you were paid to do the mod

this mean you save 800 on the t21 not 500 at 5 a day that is 1600 days before the s21 goes past the t21

So I kind of feel sorry for people that did not go for t21's and mod them like I did.



Now if you read all that I said I was pissed to start when I found out I need to mod my gear but I ended up making out better with the t21's

I think any hands on person should consider the t21 as pretty much an equal to the s21

[simulanon]

I just got my first T21 working on VNISH firmware. Set it for 175TH just to see how it stabilizes. Very exciting! I too was quite upset when i opened up my T21's and realized it was 3 phase power. I am so glad that I am able to convert this to a good miner just using my S19j pro power supplies from backup miners. Im going to model a cover and put it up on thingiverse for anyone that needs it. Sorry altair, i really love and appreciate the bus bars, but im not gonna pay $20 for someone else to print me a cover. And unfortunately they dont sell the stl.

[philipma1957]

I just got my first T21 working on VNISH firmware. Set it for 175TH just to see how it stabilizes. Very exciting! I too was quite upset when i opened up my T21's and realized it was 3 phase power. I am so glad that I am able to convert this to a good miner just using my S19j pro power supplies from backup miners. Im going to model a cover and put it up on thingiverse for anyone that needs it. Sorry altair, i really love and appreciate the bus bars, but im not gonna pay $20 for someone else to print me a cover. And unfortunately they dont sell the stl.

yeah I can understand not buying a cover.

but I can tell you Altair has helped me time and time again.

They also help this website a lot.

[simulanon]

My apologies!! Rereading my post and i made it seem like i was dogging on altair. Nothing could be further from the truth. They are an amazing company and i am very grateful that they have the parts and pieces we need.

The 3d printing thing is only cause im a curmudgeon who prefers to do things themselves


Also, the old s19j pro power cover mostly works in a pinch. Thats what i have on my (2x now!) T21.

The mod is extremely easy folks, takes 30 minutes including firmware install. Buy dem T21s!!

[philipma1957]

I have found a host for my t21.

here is a video of his setup.


https://www.youtube.com/watch?v=D8NONR0Sn7g

It is set to do 160th at 3000 watts. he talks about it. in the video.

[philipma1957]

So I decided to send a second t21 modded miner to my new host Iowa mining 2


https://www.youtube.com/watch?v=D8NONR0Sn7g

he shows first t21 at 14 seconds of the video.

His prices are okay not great but I wanted to clear my house out I will do 3 with him cost will be about 

660 a month. They are very tight on margin but sitting idle they do me no good.

[philipma1957]

I am happy so far with iowamining so I am sending 1 more for a total of 3 t21's.

Far cry from the 200-250kwatts of gear I ran in Clifton.

[philipma1957]

update


I run 3x t21's and 1x L7 at iowamining.


https://www.youtube.com/watch?v=GllUL-JPLQ0

I am now running a fourth t21 and will ship to Iowa on Friday the 30th

[philipma1957]

All has been good the last month.

the t21's work and the host is good.

also the L7 has been whaling on nicehash

So I am okay with my 5 units doing about 15kwatts