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Author Topic: GekkoScience Terminus R808 Miner Official Support Thread  (Read 5859 times)
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QuarterMaster
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March 15, 2018, 10:01:47 PM
 #141

Is anyone able to run their Pod(s) at 250Mhz reliably? How about 225mhz?

If you are running at 250Mhz what power supply and additional cooling are you using if any.
Thank You!
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419mining
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March 16, 2018, 01:57:21 AM
 #142

I get a solid 225 out of the ones I've tested, they heat up quick but the fans  kick in hard and the bottom of the Terminus only hits around 65C (infrared thermometer). Its stable and the Hashrate actually fluctuates between around 77Gh and 140Gh (averages 96)

"0: GSE 10030054: BM1384:8 225.00MHz (1/19/43/0) | 110.2G / 96.41Gh/s"

I run from a 6A powerbrick. From a stack of China made test units, its the most reliable Ive used so far. It gets a little hot so I know its not that efficient.
I have that and a 5A that is reliable to, not sure what the exact pull is, I dont have a clamp meter and im too lazy to buy a KillaWatt.

the 6A is a "LX1206" made in china and the 5A is a "HTY-1205000"

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March 16, 2018, 05:06:41 AM
Last edit: March 16, 2018, 03:04:26 PM by QuarterMaster
 #143

Awesome. Thanks 419M that does help and confirm what I am getting also.

I can't get past 225Mhz on the 6A brick that came with it but it does seem to running pretty well though at 225.
For my other one I am experimenting with a more efficient and stronger supply and have it running at 237.50Mhz for just over 100Ghz which is my goal for each Pod.
http://preview.ibb.co/cUPzqH/Term2_237.jpg

It is a 150Watt 12V supply with voltage adjustment. The one on the left is using the PCIe-6 connector and the barrel still on the right. The barrel won't supply as much reliably so I am going to convert that one also to see if I can run them both a little higher.
http://preview.ibb.co/mp50xx/Term_Power_Supply.jpg


Using 123 watts with 1 running at 237.50Mhz and 1 running at 225Mhz
https://i.imgur.com/rjWuBRS.jpg


Just for info, these pods seem to run at frequencies in 6.25Mhz frequency (just like the antminer S3s and S5s) which is a function of the 1384 chips in the Terminus and looks like VH has support for those frequencies as well in CGMiner (thank you sir!!) So here is a list of frequencies to try if you want to test and push just a little bit more. I can't get either of my pods to run at 250 Mhz even using the PCIe plug and the 150 watt supply by itself. The most I can get is 243.75. Will test some more when I get time but I have a feeling its a limitation of the voltage regulator. Solid build Sidehack so thank you and not complaining at all just testing the limits for the ones I received.

200 Mhz
206.25 Mhz
212.50 Mhz
218.75 Mhz
225 Mhz
231.25 Mhz
237.50 Mhz
243.75 Mhz
250 Mhz
256.25 Mhz
262.50 Mhz
268.75 Mhz
275 Mhz

Hope that helps somebody out.


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March 16, 2018, 05:32:19 AM
 #144

I am also running on 225Mhz with an avg of 97Gh/s, pods are kool to the touch and have not tried to run higher than the 225Mhz.
They have at least a month or more at 225Mhz, I just recently changed pools and started to see a few errors but nothing to be worried about.

I originally had four running stock settings but two of them went zombie and could not get them back.


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March 16, 2018, 12:00:52 PM
 #145

I need to order a new GekkoScience Break Out Board but I want to give a 460W Common Slot a try. theoretically, it could run around 9 pods with 90% efficiency.
https://www.amazon.com/HP-Common-Platinum-Power-Supply/dp/B00TJI311E

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QuarterMaster
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March 16, 2018, 01:16:11 PM
 #146

I need to order a new GekkoScience Break Out Board but I want to give a 460W Common Slot a try. theoretically, it could run around 9 pods with 90% efficiency.
https://www.amazon.com/HP-Common-Platinum-Power-Supply/dp/B00TJI311E



I am seeing about 60 watts total per pod (10-14 just running and not hashing) so that would be 540 watts total for 9 pods. So to run at 80% capacity you would be able to run 6 pods for 360 watts.

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March 16, 2018, 01:53:06 PM
 #147

Wow 60 Watts? what frequency are you running at?
According to SideHack's power chart, 60 watts is 275MHz

Quote
100MHz (44GH) 660mV/node 2.64V total; 12V 1.4A for 16.8W/0.38J/GH
125MHz (55GH) 660mV/node 2.64V total; 12V 1.7A for 20.4W/0.37J/GH
150MHz (66GH) 660mV/node 2.64V total; 12V 2.0A for 24.0W/0.36J/GH
175MHz (77GH) 693mV/node 2.77V total; 12V 2.5A for 30.0W/0.39J/GH
200MHz (88GH) 715mV/node 2.86V total; 12V 3.1A for 37.2W/0.42J/GH
225MHz (99GH) 755mV/node 3.02V total; 12V 3.8A for 45.6W/0.46J/GH
250MHz (110GH) 770mV/node 3.08V total; 12V 4.4A for 52.8W/0.48J/GH
275MHz (121GH) 770mV/node 3.08V total; 12V 4.9A for 58.8W/0.49J/GH

Ill pick up a P3 Killawatt on my way home from work tonight and see what I'm pulling per pod.

But even so, then just jump to a 750Watt, its still the same common slot power supply, still under $40
https://www.amazon.com/HP-599383-001-Common-Platinum-Supply/dp/B00719064I/

I've used the 1200Watt and Sidehacks break out board for GPU builds and AntMiners, its a solid reliable design. (those are just crazy expensive right now)

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419mining
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March 16, 2018, 01:58:08 PM
 #148

ok, I just re-read your post above, so your saying your pulling 60 Watt at the wall, and getting 80% efficiency at the power brick? 60Watt -> 48watt (225Mhz)?

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QuarterMaster
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March 16, 2018, 02:51:01 PM
Last edit: March 16, 2018, 03:01:32 PM by QuarterMaster
 #149

ok, I just re-read your post above, so your saying your pulling 60 Watt at the wall, and getting 80% efficiency at the power brick? 60Watt -> 48watt (225Mhz)?


Close. The power brick is 72 watt at 6 amp and yeah pulling 58.4 watts per pod at 225Mhz. The 750 would run at a better efficiency for sure. I'm at 123 watt for 2 pods on a 150 watt supply but it's getting too warm so I might go higher. Good Luck and let us know how it works out.
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March 16, 2018, 04:19:51 PM
 #150

But even so, then just jump to a 750Watt, its still the same common slot power supply, still under $40 https://www.amazon.com/HP-599383-001-Common-Platinum-Supply/dp/B00719064I/

How is the noise on the power supply fan?

How would I run multiple Terminus R808 using the one power supply?

I tried running stock at 300Mhz, and it kept downclocking to 200Mhz and moving between 200-300Mhz. I seem to get more stable hash rate (~85GH/s) leaving it at 200Mhz.
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March 16, 2018, 04:30:12 PM
 #151

I've never successfully run one above 275MHz, and I built the thing. 300MHz, unless you get lucky with the chips and can tweak the voltage down (or keep that regulator module cold), is probably unattainable.

If you see an unexpected drop to 200MHz that means the string locked up and reset, which took the chips back to default speed and cgminer started ramping it back up to your setpoint.

Got a new 28-135GH stick miner!
Currently in development - 100+GH USB stick; 800GH 60W pod; 6TH volt-adjustable S1/3/5 upgrade kit
Server PSU interface boards and cables. USB and small-scale miners. Hardware hosting, advice and odd-jobs. Supporting the home miner community since 2013 - http://www.gekkoscience.com
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March 16, 2018, 04:59:21 PM
 #152

If you see an unexpected drop to 200MHz that means the string locked up and reset, which took the chips back to default speed and cgminer started ramping it back up to your setpoint.

Thx for the explanation. I like these Terminus R808, I want to sell all my 2Pacs and buy these with the money! Wink
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March 16, 2018, 05:09:26 PM
 #153

How is the noise on the power supply fan?
Its a server power supply so the fan can get rather noisy but its not going to as loud as say 10 Terminus miners running.

How would I run multiple Terminus R808 using the one power supply?
You would need a breakout board and 6pin to 6pin power cables. one 750 watt power supply would be enough to run around 10 - 11 Pods around 225Mhz (60 watts each)

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QuarterMaster
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March 16, 2018, 05:13:40 PM
 #154

I've never successfully run one above 275MHz, and I built the thing. 300MHz, unless you get lucky with the chips and can tweak the voltage down (or keep that regulator module cold), is probably unattainable.

If you see an unexpected drop to 200MHz that means the string locked up and reset, which took the chips back to default speed and cgminer started ramping it back up to your setpoint.


Thanks for that and kind of figured that's what was going on.  So far the 237.50 Mhz is very stable and produces 100-104Gh/s all day with a good power supply and doesn't get too hot. I've never seen 275Mhz on mine but don't need to either. Wink
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March 16, 2018, 05:20:40 PM
 #155

But even so, then just jump to a 750Watt, its still the same common slot power supply, still under $40 https://www.amazon.com/HP-599383-001-Common-Platinum-Supply/dp/B00719064I/

How is the noise on the power supply fan?

How would I run multiple Terminus R808 using the one power supply?

I tried running stock at 300Mhz, and it kept downclocking to 200Mhz and moving between 200-300Mhz. I seem to get more stable hash rate (~85GH/s) leaving it at 200Mhz.


Depends on how many you want to run. You could run 2 off of this with no noise from the Power Supply with some good efficiency.
https://www.amazon.com/dp/B06XRBN2L3/ref=twister_B0753BTC3Z?_encoding=UTF8&psc=1

I would also grab some of the PCIe connectors. Much better power connection than the barrel connector.
https://www.amazon.com/gp/product/B01M7WO63I/ref=oh_aui_detailpage_o02_s02?ie=UTF8&psc=1

Here is a pic of two hooked up to mine and minimal noise really from the pods.
http://preview.ibb.co/mp50xx/Term_Power_Supply.jpg
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March 16, 2018, 05:31:45 PM
 #156

Quick comparison - Terminus R808 vs 2 Pac Sticks - Power usage.

It may be the power supplies I am using but the comparison is:

1 x Pod @ 237.50 Mhz    -   
58.6 Watts
100-104 Gh/s

4 x 2Pac @ 237.50 Mhz
74 Watts
98-106 Gh/s

I run 10 2Pacs but am thinking . . . .  More Pods Please!
                   
sidehack
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March 16, 2018, 06:39:16 PM
 #157

I got plenty, and you know how to get 'em.

Got a new 28-135GH stick miner!
Currently in development - 100+GH USB stick; 800GH 60W pod; 6TH volt-adjustable S1/3/5 upgrade kit
Server PSU interface boards and cables. USB and small-scale miners. Hardware hosting, advice and odd-jobs. Supporting the home miner community since 2013 - http://www.gekkoscience.com
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March 17, 2018, 10:48:19 PM
 #158

I bet if you only run 2 you'll get the full hashrate out of 'em. Could be a USB traffic limitation, same as several other people are running into.

Just a question I've been thinking about.  Would increasing the suggest-diff setting alleviate some of the USB traffic limitations? I was just thinking, why does everyone it seems, that have posted so far, been running with really low diff? I generally run my 2pacs at 512 aiming for 2-3 Accepteds per minute, or am I doing it wrong.
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March 17, 2018, 11:17:25 PM
 #159

I bet if you only run 2 you'll get the full hashrate out of 'em. Could be a USB traffic limitation, same as several other people are running into.

Just a question I've been thinking about.  Would increasing the suggest-diff setting alleviate some of the USB traffic limitations? I was just thinking, why does everyone it seems, that have posted so far, been running with really low diff? I generally run my 2pacs at 512 aiming for 2-3 Accepteds per minute, or am I doing it wrong.

The Diff depends on what you are mining, I am currently mining BT Cash and that is why it's lower.
QuarterMaster
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March 18, 2018, 04:53:35 AM
 #160

I got plenty, and you know how to get 'em.


Thanks. Laura got back to me so picking up a couple more.
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