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Title: Antminer S5 getting low hash rates Post by: ultramaman on April 13, 2015, 01:03:45 AM Hi,
need some advice here. I've recently, over the weekend , got hold of an antminer s5. I'm using a thermaltake 730W psu with 2 separate railings for the 6 pin connectors. and i've made sure i connect a single blade to one railing. the issue is, i cant seem to get a decent hash rate. im averaging something below 50ghash . which doesnt make sense. my other miners are on slush pools and im aware that i need to set the worker diff level in order for the pool to assign the work correctly , right ? so that works well for my s4 . but when i set the worker to 1024 , i cant a very low hash rate. i tried leaving it blank as well so that the pool can identify and assign work accordingly. that doesnt seem to help. i've also tried btcguild . that still gives the same results. i tried searching the forum for anyone with similar issues, but so far, cant find any. any ideas, or advice ? Title: Re: Antminer S5 getting low hash rates Post by: eretron on April 13, 2015, 01:19:32 AM Do you have some xxxxxx on miner status screen?
My bet is on the PSU. I had similar situation with 700W PSU. try another one, or try powering S5 with 2 PSUs at the same time. Just makensure that each psu is connected to only one hashing board. Title: Re: Antminer S5 getting low hash rates Post by: ultramaman on April 13, 2015, 01:35:08 AM my miner status all my asics are o
Title: Re: Antminer S5 getting low hash rates Post by: notlist3d on April 13, 2015, 01:58:04 AM Try antpool and see what it does. If it does not pick up to a faster rate. I suggest uploading picture of configuration, and status. That will help us know more.
Without pics, its harder to communicate what it looks like. Title: Re: Antminer S5 getting low hash rates Post by: ultramaman on April 13, 2015, 07:17:44 AM figured out that my psu is somehow not powerful enough for the miner. after adjusting the frequency to around 300 , im getting a decent hashrate of 850 to 900 Ghash .
thank you all for the advice . im guessing, i just need to pick up a corsair. would a 750W corsair be enough ? Title: Re: Antminer S5 getting low hash rates Post by: notlist3d on April 13, 2015, 07:45:57 AM figured out that my psu is somehow not powerful enough for the miner. after adjusting the frequency to around 300 , im getting a decent hashrate of 850 to 900 Ghash . thank you all for the advice . im guessing, i just need to pick up a corsair. would a 750W corsair be enough ? Yes 590 watts is the default on watt's needed. - https://bitcointalk.org/index.php?topic=902305.0 750 gives it enough headroom it should have no issues. Title: Re: Antminer S5 getting low hash rates Post by: smit1237 on April 13, 2015, 08:00:19 AM Solution is simple, reflash firmware, untick "save settings", should be fine with any firmware.
Title: Re: Antminer S5 getting low hash rates Post by: Rabinovitch on April 13, 2015, 09:46:02 AM How can it help in case of weak PSU?.. ;)
Title: Re: Antminer S5 getting low hash rates Post by: pusilone on April 13, 2015, 09:48:02 AM :)
Title: Re: Antminer S5 getting low hash rates Post by: Rabinovitch on April 13, 2015, 10:08:28 AM There is one Russian IT rule: "seven problems - one reset". May be it's about that... :D
p.s. but smit1237 appearantly offers an advanced version of that rule, where the reflashing is required. Title: Re: Antminer S5 getting low hash rates Post by: ultramaman on April 14, 2015, 01:41:55 AM i actually tried to reflash, first thing i did , i downloaded the firmware from the website and tried to reflash it, it came back with an error . short read.
but im curious why the psu that im using is not enough for the s5 . im using a thermaltake 730W with 87% efficiency . http://www.thermaltake.com/products-model.aspx?id=C_00001966 (http://www.thermaltake.com/products-model.aspx?id=C_00001966) the s5 that im using was shipped to me on early april 2015. so im guessing it should have the latest firmware , right ? Title: Re: Antminer S5 getting low hash rates Post by: Amph on April 14, 2015, 07:40:02 AM i actually tried to reflash, first thing i did , i downloaded the firmware from the website and tried to reflash it, it came back with an error . short read. but im curious why the psu that im using is not enough for the s5 . im using a thermaltake 730W with 87% efficiency . http://www.thermaltake.com/products-model.aspx?id=C_00001966 (http://www.thermaltake.com/products-model.aspx?id=C_00001966) the s5 that im using was shipped to me on early april 2015. so im guessing it should have the latest firmware , right ? if the psu is a low quality one it could be that, because the s5(it is overclocked?) run at 590 at default, no so far from 730(with bad efficiency 87), if it were a good psu with a better efficiency, like corsair or seasonic it would have been enough otherwise i can only think of a defective device... Title: Re: Antminer S5 getting low hash rates Post by: Zich on April 16, 2015, 09:17:11 AM i actually tried to reflash, first thing i did , i downloaded the firmware from the website and tried to reflash it, it came back with an error . short read. but im curious why the psu that im using is not enough for the s5 . im using a thermaltake 730W with 87% efficiency . http://www.thermaltake.com/products-model.aspx?id=C_00001966 (http://www.thermaltake.com/products-model.aspx?id=C_00001966) the s5 that im using was shipped to me on early april 2015. so im guessing it should have the latest firmware , right ? Your psu is single rail psu, so it's should be enough to powered 1 unit S5. Try to check if there is any loose connector especially the ribbon cable. Title: Re: Antminer S5 getting low hash rates Post by: smit1237 on April 17, 2015, 09:34:13 PM Ouch wrong suggestion, sorry :D
Title: Re: Antminer S5 getting low hash rates Post by: GigaBit on April 18, 2015, 10:04:10 PM Hi, need some advice here. I've recently, over the weekend , got hold of an antminer s5. I'm using a thermaltake 730W psu with 2 separate railings for the 6 pin connectors. and i've made sure i connect a single blade to one railing. the issue is, i cant seem to get a decent hash rate. im averaging something below 50ghash . which doesnt make sense. my other miners are on slush pools and im aware that i need to set the worker diff level in order for the pool to assign the work correctly , right ? so that works well for my s4 . but when i set the worker to 1024 , i cant a very low hash rate. i tried leaving it blank as well so that the pool can identify and assign work accordingly. that doesnt seem to help. i've also tried btcguild . that still gives the same results. i tried searching the forum for anyone with similar issues, but so far, cant find any. any ideas, or advice ? Go single rail... t'was the first thing I was told when I started mining... ALWAYS go single rail. You could power that miner with a 650w single rail PSU. (no O/C) There is no way you should have problems with a 750w PSU but yeah... You only 1 rail, you're a miner, not a train ;D Hope you get it figured out. Title: Re: Antminer S5 getting low hash rates Post by: MyRig on April 18, 2015, 10:17:58 PM during the firmware reinstall, please select this option!
https://bitmain.zendesk.com/hc/en-us/article_attachments/201555919/FirmwareUpgrade.png |
