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zulover
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January 29, 2014, 09:54:21 PM |
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Rishodi
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January 30, 2014, 02:47:07 AM |
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Which advice? The part where I recommend not stabbing improperly sized and unstabilized terminals into high-current-capacity clips and trusting $1000+ hardware to it?
No, the potentially fatal advice that 12V (80A) isn't dangerous. Okay, I know this post is 6 weeks old, but nonetheless I had to reply to set the record straight. 12V is not dangerous, period. If you don't believe me, ask any car mechanic ( and here's a link). The 12V battery in your car is capable of producing hundreds of amps of current, far more than any DC converter you have in your house, including your computer PSUs. Yet your car battery is completely safe to handle. You can even bridge the terminals with your hands and nothing will happen. Sure, if you wet your skin you might feel a shock (similar to putting a 9V battery on your tongue), but it's just not going to hurt you because 12V is insufficient electrical potential for overcoming the resistance of the human body to deliver a fatal amount of current to your heart. When you're handling live 12V leads, your biggest worry should be making sure not to short them. Don't worry about getting a deadly shock, because it's just not going to happen. |
Bitrated user: Rishodi.
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zulover
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January 30, 2014, 07:48:54 AM |
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Anyone had any units blowing up when you over clock to 400mhz or what's the worst that could happen?
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batt01
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January 30, 2014, 08:03:32 AM |
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Anyone had any units blowing up when you over clock to 400mhz or what's the worst that could happen?
One of mine locked ip and was unreachable,but continued to hash. reseting to factory defaults fixed and I re overclocked and there have been not problems since. |
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dogie (OP)
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Activity: 1666
Merit: 1183
dogiecoin.com
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January 30, 2014, 10:17:32 AM |
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are you using those fans to blow in, or exhaust in the back ? i noticed that regular 120, even corsair high airflow fans will not match the same output of air/cooling that the stock ant fans come with. and i am having a hard time finding those dinosaur fans. i have contacted the manufacturer for RMA, but down time from mining sucks. so am looking for a quick fix.
In a closed case, pull though would be better. This is push only. If you want a temporary solution, take one of the blades out of the case, and run both flat on their backs. You might need to made some standoffs just to leave a gap to the back of the PCB. Then you can use dual fans blowing directly onto the heatsink on both blades - any 120mms will do and you can get them whisper quiet while maintaining good temps. If you really want to find the original fans or equivalent, look at server 12cm, 3.5cm deep (or even 5) fans. They're loud though, and built for pressure rather than airflow. |
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dogie (OP)
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Activity: 1666
Merit: 1183
dogiecoin.com
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January 30, 2014, 10:18:46 AM |
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Perfect. I'd recommend getting a 750W as it will be able to power 2 miners (Ants or otherwise), or one large miner. 650W is a bit of a weird number. |
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dogie (OP)
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Activity: 1666
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dogiecoin.com
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January 30, 2014, 10:19:06 AM |
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Anyone had any units blowing up when you over clock to 400mhz or what's the worst that could happen?
What hash rate does 400mhz correspond to? |
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zulover
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January 30, 2014, 06:34:24 PM |
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Perfect. I'd recommend getting a 750W as it will be able to power 2 miners (Ants or otherwise), or one large miner. 650W is a bit of a weird number. do you mean 750 for 2 antminer boards( i.e 1 unit) or 2 whole units? Quote from: zulover on Today at 07:48:54 AM Anyone had any units blowing up when you over clock to 400mhz or what's the worst that could happen? What hash rate does 400mhz correspond to? 200-204ghs |
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batt01
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January 30, 2014, 07:30:48 PM |
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Perfect. I'd recommend getting a 750W as it will be able to power 2 miners (Ants or otherwise), or one large miner. 650W is a bit of a weird number. Im assuming this would be ok for stock setting, but not quiet enough for a overclocked unit. I have one running on a 750 Corsair, it would be nice if I could run two on it. What would you suggest to run two overclocked Ants. I thinking a 1000 watt would be needed. |
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zulover
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January 30, 2014, 10:27:44 PM |
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when i check with a killawatt at stock it pulls 420watt at the wall at 400mhz getting 202ghs it pulls 490watts, round up to 500. at the moment its on 375mhz and getting 191ghs, temps are 46 - 47 and pulling 460 at the wall. but the pcie cables on the cheapy power supply are slightly warm, will be swapping over to the 650 corsair model. the size of the cable is an issue.
dogie, 1.5mm should be ideal fro 22a@12v. they would stay nice and cool. My zeus 1500watt, 3 ants on its at 375mhz, has thicker size diameter and they are cool, even when you loop, i.e one cable that continues on to the 2nd board its only slightly warm.
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Rishodi
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February 01, 2014, 02:03:16 AM |
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I have added exhaust fans on each of my AntMiners to complement the existing intake fans. They both work and are being controlled by PWM. However, the UI consistently reports the RPM for both new fans as zero. Is there some configuration setting I have to change to enable correct speed reporting in the UI?
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Bitrated user: Rishodi.
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batt01
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February 01, 2014, 02:10:19 AM |
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I have added exhaust fans on each of my AntMiners to complement the existing intake fans. They both work and are being controlled by PWM. However, the UI consistently reports the RPM for both new fans as zero. Is there some configuration setting I have to change to enable correct speed reporting in the UI?
My extra fan show zero. i think that's normal. |
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dogie (OP)
Legendary
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Activity: 1666
Merit: 1183
dogiecoin.com
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February 01, 2014, 09:32:52 AM |
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I have added exhaust fans on each of my AntMiners to complement the existing intake fans. They both work and are being controlled by PWM. However, the UI consistently reports the RPM for both new fans as zero. Is there some configuration setting I have to change to enable correct speed reporting in the UI?
Its just not coded into the firmware, so rather than it being a function its just a constant (0). It will only ever return 0. |
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zulover
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February 01, 2014, 10:35:36 AM |
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I just tried a 3 pin fan on the second board on the miner.when you attach it to 3 pins from the top going g down the fan works at normal speed. When you connect it starting with the second pin from the top the new fan doesn't work but the stock fan ramps up in speed a lot in the ui it's at 3020 at the temps are down to mid 3os. Is it Ok to keep it like that? It would be great for overclocked miners.
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ineedit
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February 01, 2014, 10:45:45 AM |
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I just tried a 3 pin fan on the second board on the miner.when you attach it to 3 pins from the top going g down the fan works at normal speed. When you connect it starting with the second pin from the top the new fan doesn't work but the stock fan ramps up in speed a lot in the ui it's at 3020 at the temps are down to mid 3os. Is it Ok to keep it like that? It would be great for overclocked miners.
It has same effect and as much use as you just driving your car in first gear so you can see the RPM counter near the red. It would be a great way to help burn out you fan faster. Ant's are happy at 50c and below, the fan is set to work hardest at 60c and the unit shuts down at 70c. |
If I have been help then please show your thanks BTC: 127PRogAVZiV3fEmpJERh9KemK3a3Ffh6G LTC: LXghFL8mZffpTFkm2nRTesuDrV5DJQP3Js
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zulover
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February 01, 2014, 10:51:06 AM |
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I just tried a 3 pin fan on the second board on the miner.when you attach it to 3 pins from the top going g down the fan works at normal speed. When you connect it starting with the second pin from the top the new fan doesn't work but the stock fan ramps up in speed a lot in the ui it's at 3020 at the temps are down to mid 3os. Is it Ok to keep it like that? It would be great for overclocked miners.
It has same effect and as much use as you just driving your car in first gear so you can see the RPM counter near the red. It would be a great way to help burn out you fan faster. Ant's are happy at 50c and below, the fan is set to work hardest at 60c and the unit shuts down at 70c. ok i see i felt as much , otherwise everyone would have done it. shut off at 70 thats high compared to some other machine avalons were at 60 i think.also could 400mhz over clock burn the board out? |
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ineedit
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February 01, 2014, 11:04:26 AM |
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I just tried a 3 pin fan on the second board on the miner.when you attach it to 3 pins from the top going g down the fan works at normal speed. When you connect it starting with the second pin from the top the new fan doesn't work but the stock fan ramps up in speed a lot in the ui it's at 3020 at the temps are down to mid 3os. Is it Ok to keep it like that? It would be great for overclocked miners.
It has same effect and as much use as you just driving your car in first gear so you can see the RPM counter near the red. It would be a great way to help burn out you fan faster. Ant's are happy at 50c and below, the fan is set to work hardest at 60c and the unit shuts down at 70c. ok i see i felt as much , otherwise everyone would have done it. shut off at 70 thats high compared to some other machine avalons were at 60 i think.also could 400mhz over clock burn the board out? No 400Mhz will not burn out the board unless the components are out of spec but greater than that starts to push the VRM's and that could cause one to occur. I run ant's at 400Mhz @ 50c in 23c ambient @2200-2500 rpm on a single fan. As spring turns to summer I will drop to 375Mhz or add cheap 130CFM fans, by the summer and assuming that the difficulty has not increased to make them unprofitable I will drop to 350MHz or below and add cheap 130CFM fans. |
If I have been help then please show your thanks BTC: 127PRogAVZiV3fEmpJERh9KemK3a3Ffh6G LTC: LXghFL8mZffpTFkm2nRTesuDrV5DJQP3Js
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zulover
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February 01, 2014, 11:21:17 AM |
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I just tried a 3 pin fan on the second board on the miner.when you attach it to 3 pins from the top going g down the fan works at normal speed. When you connect it starting with the second pin from the top the new fan doesn't work but the stock fan ramps up in speed a lot in the ui it's at 3020 at the temps are down to mid 3os. Is it Ok to keep it like that? It would be great for overclocked miners.
It has same effect and as much use as you just driving your car in first gear so you can see the RPM counter near the red. It would be a great way to help burn out you fan faster. Ant's are happy at 50c and below, the fan is set to work hardest at 60c and the unit shuts down at 70c. ok i see i felt as much , otherwise everyone would have done it. shut off at 70 thats high compared to some other machine avalons were at 60 i think.also could 400mhz over clock burn the board out? No 400Mhz will not burn out the board unless the components are out of spec but greater than that starts to push the VRM's and that could cause one to occur. I run ant's at 400Mhz @ 50c in 23c ambient @2200-2500 rpm on a single fan. As spring turns to summer I will drop to 375Mhz or add cheap 130CFM fans, by the summer and assuming that the difficulty has not increased to make them unprofitable I will drop to 350MHz or below and add cheap 130CFM fans. i see, sounds reasonable enought. And the cooling obviously is a great help for the overclocking process. it must get quite hot where you then. u.k is mostly cold even summer isnt too bad for minng. |
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