ANTMINER S5: 1155GH(+OverClock Potential), In Stock $0.319/GH & 0.51W/GH

[lkthomas]

ANTMINER S5 Price Drop - 15% Discount Off

• Batch 4        $0.295/GH/s
• Bulk Batch 4  $0.27/GH/s

Shipping on January 12th, You may freely choose the shipping service level with your own wallet  

Coupon
Coupons have been issued to all customers who ordered S5 before price drop  


BITMAIN

January 5th, 2015

Its hard not to point out that that is well over 1BTC/TH - a price that was considered competitive at only slightly lower efficiency over a month ago, and when bitcoin prices were almost 50% higher.

Definitely holding off on the hardware orders until price pops back over $400

Same here, BTC price should be above 430 to make a break even!

[mrc_spot]

My two S5 will arrive on Wednesday so I was thinking as using my one "Cooler Master Silent Pro 1200W Gold PSU" for both. Will that work? Also whats the difference between Gold & Bronze i.e. which one draws less power?

[TrevorS]

Just tried to order two with BTC to the US.  Couldn't!  Appears to require I enter a mobile phone number, something I neither have nor need/want.  What is this shit?

Issue appears to be resolved.  I'm instructed to enter my "land line" number into the mobile phone number field in order to provide delivery communication.  I gather mobile phone is assumed any more -- guess I'm just old school.

[CHAOSiTEC]

My two S5 will arrive on Wednesday so I was thinking as using my one "Cooler Master Silent Pro 1200W Gold PSU" for both. Will that work? Also whats the difference between Gold & Bronze i.e. which one draws less power?

gold is the better one to use, top notch is platinum :-)

[-ck]

Here's a quick binary for the S5 based on bitmain's existing code which will ignore any queue parameter, not discard stales, should be able to ramp up smoothly if you find yourself on a very low diff pool, and use a little less CPU:

http://ck.kolivas.org/apps/cgminer/antminer/s5/4.9.0-150105/cgminer

Binaries will only be temporary so will not survive a machine reboot.

The following will change the cgminer binary for you (set the appropriate IP address), the default root password is "admin":

Code:

ssh 192.168.1.x -l root
cd /tmp
wget http://ck.kolivas.org/apps/cgminer/antminer/s5/4.9.0-150105/cgminer
chmod +x cgminer
mv /usr/bin/cgminer /usr/bin/cgminer.bak
cp cgminer /usr/bin
/etc/init.d/cgminer.sh restart

There should be a more comprehensive merge in the future into mainline cgminer, hopefully by Kano. Bitmaintech has provided us both with S5s to support cgminer development.

[TrevorS]

Here's a quick binary for the S5 based on bitmain's existing code which will ignore any queue parameter, not discard stales, should be able to ramp up smoothly if you find yourself on a very low diff pool, and use a little less CPU:

http://ck.kolivas.org/apps/cgminer/antminer/s5/4.9.0-150105/cgminer

Binaries will only be temporary so will not survive a machine reboot.

The following will change the cgminer binary for you (set the appropriate IP address), the default root password is "admin":

Code:

ssh 192.168.1.x -l root
cd /tmp
wget http://ck.kolivas.org/apps/cgminer/antminer/s5/4.9.0-150105/cgminer
chmod +x cgminer
mv /usr/bin/cgminer /usr/bin/cgminer.bak
cp cgminer /usr/bin
/etc/init.d/cgminer.sh restart

There should be a more comprehensive merge in the future into mainline cgminer, hopefully by Kano. Bitmaintech has provided us both with S5s to support cgminer development.

Thanks very much, but a question, do you really mean the binary won't survive a reboot? Or do you mean it won't survive a reset?  My expectation would be a reset!

[-ck]

Thanks very much, but a question, do you really mean the binary won't survive a reboot? Or do you mean it won't survive a reset?  My expectation would be a reset!

Reboot. The filesystem on these is usually volatile and read into ram on a reboot. When you write to it it's written only to the ram part. You'd need full firmware (I believe) to write something more permanent.

[TrevorS]

That's too bad, guess I'm spoiled by the S3 -- but again, thanks! 

[IYFTech]

Here's a quick binary for the S5 based on bitmain's existing code which will ignore any queue parameter, not discard stales, should be able to ramp up smoothly if you find yourself on a very low diff pool, and use a little less CPU:

http://ck.kolivas.org/apps/cgminer/antminer/s5/4.9.0-150105/cgminer

Binaries will only be temporary so will not survive a machine reboot.

The following will change the cgminer binary for you (set the appropriate IP address), the default root password is "admin":

Code:

ssh 192.168.1.x -l root
cd /tmp
wget http://ck.kolivas.org/apps/cgminer/antminer/s5/4.9.0-150105/cgminer
chmod +x cgminer
mv /usr/bin/cgminer /usr/bin/cgminer.bak
cp cgminer /usr/bin
/etc/init.d/cgminer.sh restart

There should be a more comprehensive merge in the future into mainline cgminer, hopefully by Kano. Bitmaintech has provided us both with S5s to support cgminer development.

Excellent ck!!  Testing now, but I can already see an improvement with p2pool DOA/stale rate which I've been battling with since the start - it has halved. Many thanks ck & kano - hopefully you can figure out a way to make the binary change permanent soon, as the S5's require a reboot pretty often due to a firmware issue that makes one hash board drop off every other day.....

@ Bitmain:  Any news on a firmware fix for this in the near future?

[-ck]

If only I could find a meaningful way to make the hardware shut the fuck up though. I thought we got over noisy hardware... I have to turn this off overnight again. I added a fan to the back in a push pull configuration like the S3 and it only dropped the fanspeed one notch, hardly worth the effort. The lowest speed I can stably run this at is 275 and still the fan's too noisy for my liking. The driver code doesn't really do anything to fanspeeds which all seem to be controlled within the device's FPGA itself.

[IYFTech]

If only I could find a meaningful way to make the hardware shut the fuck up though. I thought we got over noisy hardware... I have to turn this off overnight again. I added a fan to the back in a push pull configuration like the S3 and it only dropped the fanspeed one notch, hardly worth the effort. The lowest speed I can stably run this at is 275 and still the fan's too noisy for my liking. The driver code doesn't really do anything to fanspeeds which all seem to be controlled within the device's FPGA itself.

 

Locked mine up in the barn next door - I can think & sleep now......

[sEpuLchEr]

If only I could find a meaningful way to make the hardware shut the fuck up though. I thought we got over noisy hardware... I have to turn this off overnight again. I added a fan to the back in a push pull configuration like the S3 and it only dropped the fanspeed one notch, hardly worth the effort. The lowest speed I can stably run this at is 275 and still the fan's too noisy for my liking. The driver code doesn't really do anything to fanspeeds which all seem to be controlled within the device's FPGA itself.

Someone did one for the S4 a while back by modifying /lib/modules/3.8.13/kernel/drivers/bitmain/bitmain_spi.ko. Not sure if this information will help.

[mavericklm]

If only I could find a meaningful way to make the hardware shut the fuck up though. I thought we got over noisy hardware... I have to turn this off overnight again. I added a fan to the back in a push pull configuration like the S3 and it only dropped the fanspeed one notch, hardly worth the effort. The lowest speed I can stably run this at is 275 and still the fan's too noisy for my liking. The driver code doesn't really do anything to fanspeeds which all seem to be controlled within the device's FPGA itself.

take it apart and spread it, then cool each blade with 2 or more fans. try to keep the same temperature

[baristor]

was thinking of buying s5 now im thinking ill jus save up $$ for them new miners coming in feb

[mavericklm]

u may save more if u buy btc atm!

[testerx]

If BTC is now 260-270USD, difficulty seems going up, then S5 for price 401USD + shipping is very overpriced.
I wanted to buy around 30 units, but price have to be  less then 350USD.

In all honesty the unit costs don't really matter so much as what your power costs and overhead are for running them, and the problem is that at current BTC prices and average hosting/power costs it would take a very long time to ROI and that's assuming BTC doesn't drop further and difficulty doesn't increase which are pretty bad assumptions.

Honestly if you live in a place with super cheap power like Washington state and have your well ventilated naturally cooled warehouse or something then these would be great even at $401.

[testerx]

Actually, it may make sense for a LOT of people to be running these undervolted since ROI may actually be slightly better already which is kinda insane.  Too bad it's so hard to actually undervolt these because if Bitmain's charts are correct 0.65V would drop power consumption per GH by about 40%.  Guess it's time to start looking for 9V psus lol.

[dogie]

Just tried to order two with BTC to the US.  Couldn't!  Appears to require I enter a mobile phone number, something I neither have nor need/want.  What is this shit?

Phone numbers are required for the courier / customs, nothing else.

My two S5 will arrive on Wednesday so I was thinking as using my one "Cooler Master Silent Pro 1200W Gold PSU" for both. Will that work? Also whats the difference between Gold & Bronze i.e. which one draws less power?

Its not an amazing power supply, but it should do the job for now. Gold, silver, bronze, plat etc are efficiency standards that the PSU meets.

[lulu2003]

undervolting on PSU level is indeed a point I missed before. Are there any DIY? Or is efficiency directly degraded after modding?

[Biodom]

If only I could find a meaningful way to make the hardware shut the fuck up though. I thought we got over noisy hardware... I have to turn this off overnight again. I added a fan to the back in a push pull configuration like the S3 and it only dropped the fanspeed one notch, hardly worth the effort. The lowest speed I can stably run this at is 275 and still the fan's too noisy for my liking. The driver code doesn't really do anything to fanspeeds which all seem to be controlled within the device's FPGA itself.

replacing the stock fan with a single Noctua ($24.5 on Amazon) makes it much less loud and changes the metallic banging sound of the stock fan to whooosh, although temperatures rise to ~60C and you have to hash at 325 mhz(1075 GH). I am waiting for a second fan to add pull and go back to 350mhz or even higher.
http://www.amazon.com/Bearing-NF-F12-iPPC-3000-PWM/dp/B00KFCRATC