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Topic: [GROUP BUY CLOS & SHIPPED] - ** GIVEAWAY ** BITMAIN AntMiner 180 GH/S 300 Units (Read 38039 times)

sr. member
Activity: 458
Merit: 250
beast at work
Ocja... send them to me... no problems with customs here Cheesy

congrats
full member
Activity: 202
Merit: 102
Thanks For Sushi. I did not expect gift. I am very pleased. Only have to solve the problem with the customs, which doesn't pass the cargo.
Happy New Year to all.
sr. member
Activity: 447
Merit: 250
COngrats to OCJA.
Congrats Ocja.

You now have two packages waiting to be picked up:

Quote
Moscow, Russian Federation    12/25/2013    3:58 A.M.    Warehouse Scan
Moscow, Russian Federation    12/24/2013    8:48 A.M.    Warehouse Scan
Moscow, Russian Federation    12/23/2013    6:03 P.M.    Shipment is held to verify commodity description with the customer for correct classification.
newbie
Activity: 7
Merit: 0
Received all my 2 miners on friday, everything worked fine, thanks a lot!
Paid 200 zł VAT to courier, so around ~70 USD / ~50 EUR
 Smiley
hero member
Activity: 896
Merit: 500
sr. member
Activity: 448
Merit: 250
Still hoping for the Giveaway news...
full member
Activity: 219
Merit: 100
Is there a way to undervolt/underclock these devices?

If you SSH into the antminer using putty or a linux command prompt, you can edit the file asic_freq (located in /etc/config/ which controls the frequency the chips operated. There are several prepopulated values in the file... each option is a set of 3 entries you remove the "#" from the lines you wish to try and add "#" to the lines which will no longer be used, save the file then reboot the Antminer... I created a freq setting of 375Mhz by adding lines using the hex value "4e81" (in between 4d81(350Mhz) and 4f81(400Mhz) now my ant is running nicely at a solid 192Gh/s for a mild overclock..

Is there a risk of bricking the machine doing this, or will the controller still work (allowing further edits or restoring the old values) but the hasher not work?

There's always a risk of bricking a unit when you play with configuration files, but the asic_freq file does not seem critical to the unit booting. I haven't experienced an error while modifying the file, but at worst, cgminer wouldn't start based on chip errors and you'd have to go back into the file and select values which worked.
legendary
Activity: 2968
Merit: 1198
Is there a way to undervolt/underclock these devices?

If you SSH into the antminer using putty or a linux command prompt, you can edit the file asic_freq (located in /etc/config/ which controls the frequency the chips operated. There are several prepopulated values in the file... each option is a set of 3 entries you remove the "#" from the lines you wish to try and add "#" to the lines which will no longer be used, save the file then reboot the Antminer... I created a freq setting of 375Mhz by adding lines using the hex value "4e81" (in between 4d81(350Mhz) and 4f81(400Mhz) now my ant is running nicely at a solid 192Gh/s for a mild overclock..

Is there a risk of bricking the machine doing this, or will the controller still work (allowing further edits or restoring the old values) but the hasher not work?
full member
Activity: 219
Merit: 100
Is there a way to undervolt/underclock these devices?

If you SSH into the antminer using putty or a linux command prompt, you can edit the file asic_freq (located in /etc/config/) which controls the frequency at which the chips operate. There are several pre-populated values in the file... each option is a set of 3 entries you remove the "#" from the lines you wish to try and add "#" to the lines which will no longer be used, save the file then reboot the Antminer... I created a freq setting of 375Mhz by adding lines using the hex value "4e81" (in between 4d81(350Mhz) and 4f81(400Mhz) now my ant is running nicely at a solid 192Gh/s for a mild overclock..  There is a blurb on this in the antminer setup guide.

To answer your original question, you would underclock by selecting a chip frequency less than 350Mhz
legendary
Activity: 1036
Merit: 1000
Nighty Night Don't Let The Trolls Bite Nom Nom Nom
61 is quite hot.

how do you have it or them set up? picture would be good
sr. member
Activity: 458
Merit: 250
beast at work
is it too hot for them to run at 61 C ?

/etc/config/cgminer state:

option target '60'
option overheat '70'

so... you are close to the fire :|
sr. member
Activity: 448
Merit: 250
Hi folks Smiley

Is there a way to manually override the fan settings so they can run at a set speed rather them temp = speed.

It's just that the air temp in the room where they are stored is 3.5c max to -5c and the fan speed is 1090rpm

Would like to increase the fan speed to keep the heatsink much cooler than which it already is currently at.

As my temps are 43c on both blades yet I was getting almost same temps as in a 30c room.

Any ideas ?

Cheers

Just hook the fan straight up to the PSU instead or use a fan speed regulator in between it and the PSU.
legendary
Activity: 1974
Merit: 1003
is it too hot for them to run at 61 C ?

Hmm, mine run at 45 in a basement. 61 is pretty high if you ask me.


i dont have a basement Smiley
legendary
Activity: 1526
Merit: 1002
Bulletproof VPS/VPN/Email @ BadAss.Sx
is it too hot for them to run at 61 C ?

Hmm, mine run at 45 in a basement. 61 is pretty high if you ask me.
sr. member
Activity: 588
Merit: 269
Hi folks Smiley

Is there a way to manually override the fan settings so they can run at a set speed rather them temp = speed.

It's just that the air temp in the room where they are stored is 3.5c max to -5c and the fan speed is 1090rpm

Would like to increase the fan speed to keep the heatsink much cooler than which it already is currently at.

As my temps are 43c on both blades yet I was getting almost same temps as in a 30c room.

Any ideas ?

Cheers
legendary
Activity: 1974
Merit: 1003
is it too hot for them to run at 61 C ?
member
Activity: 111
Merit: 10
My apartment is so hot now.. I have to open the windows

That's the problem. If you want them to run quietly you need the room to be cool. The fans are temperature controlled.

I may be considering to put them outside on the patio in some kind of enclosure.

legendary
Activity: 2968
Merit: 1198
My apartment is so hot now.. I have to open the windows

That's the problem. If you want them to run quietly you need the room to be cool. The fans are temperature controlled.
member
Activity: 111
Merit: 10
i dont find them very silent ... they are lower than BFL .. true... but cant sleep with them in the same room , thats for sure Smiley

Same here.  And sometimes the fans kick into higher gear which makes them even louder.
My apartment is so hot now.. I have to open the windows
legendary
Activity: 2968
Merit: 1198
Is there a way to undervolt/underclock these devices?
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