|
Where are Avalon 4s being sold?
|
|
|
|
If you're editing cgminer.conf, you may find some of these other cgminer arguments interesting: --bitmain-dev <arg> Set bitmain device (default: usb mode, other windows: COM1 or linux: /dev/bitmain-asic)
--bitmain-hwerror Set bitmain device detect hardware error
--bitmain-checkall Set bitmain check all
--bitmain-checkn2diff Set bitmain check not 2 pow diff
--bitmain-nobeeper Set bitmain beeper no ringing
--bitmain-notempoverctrl Set bitmain not stop runing when temprerature is over 80 degree Celsius
--bitmain-auto Adjust bitmain overclock frequency dynamically for best hashrate
--bitmain-homemode Set bitmain miner to home mode
--bitmain-cutoff <arg> Set bitmain overheat cut off temperature (default: 60)
--bitmain-fan <arg> Set fanspeed percentage for bitmain, single value or range (default: 20-100)
--bitmain-freq <arg> Set frequency
--bitmain-voltage <arg> Set voltage
--bitmain-options <arg> Set bitmain options baud:miners:asic:timeout:freq
--bitmain-temp <arg> Set bitmain target temperature (default: 50)
A few of those (--bitmain-homemode, --bitmain-fan, --bitmain-temp) could make nice options for cgminer.conf for people who don't want their fans to burn out. I'm also curious if --bitmain-auto works. --bitmain-homemode works --bitmain-auto doesn't work --bitmain-fan doesn't work |
|
|
|
I'd say you've got some really bad luck, combined with poor quality control by the PSU manufacturer. I've resigned to running my S4s with different power supplies, and keeping the originals for when I resell the units used. Here's a picture of 4 of them running off of Delta 2000w server PSUs, happy and stable as can be:  |
|
|
|
hi guys,
Bitmains last S4 firmware has a HUGE BUG.(or they do this in their knowledge for sell alot of S5) We cannot change voltage !!!
if you want to do downclock you must to use previus version.
initramfs.bin.SD-20150129.tar this version is Bad for voltage settings...
THIS IS CONFIRMED ON MY ALL S4'S. IF YOU WANT TO DO DOWNCLOCK DONT UPDATE THIS FIRMWARE.!!! this firmware making fixed voltage 0,725 V. this is BAD FOR WATTAGE ! BUT FPGA CHAIN1 PROBLEM IS GONE  (for me doesnt matter, i fixed chain1 problem myself) BITMAIN, WHY DID THIS? WE NEED CONFIGURABLE VOLTAGE AND WE PAID A LOT OF MONEY FOR THAT !!! FIX THAT SHT !! What was your solution for fixing the chain 1 issue? I haven't tested lowering the voltage with this firmware yet, but hopefully bitmain will fix it if it is broken. The new firmware works MUCH better than the old one. |
|
|
|
We can add worker names to our miners right? For example 1KT2ceAEoMnpHMgRCoSW39teFQMBv4vebs_S4-1
If you're running your own node, you can set the payout address in the p2pool start-up command using the -a parameter, then call your workers whatever you want - all payouts will go to the payout address you stipulate in the p2pool command. This makes it easy to monitor your workers  That's what I'm already doing, as can be seen here: http://69.157.250.207:9332/static/p2pool-node-status/But I'd like for the predicted payout to show up beside each miner instead of under the node's status. Any way of doing that, and still keeping each miner separate? |
|
|
|
|
We can add worker names to our miners right? For example 1KT2ceAEoMnpHMgRCoSW39teFQMBv4vebs_S4-1
|
|
|
|
I'd like to state that I don't think this is Bitmain's fault, as they didn't manufacture these fans. It would be nice of them to extend the 3 month warranty for the fans, though, as these seem to be failing pretty close to the 3 month mark. A quality fan usually has a MTBF of 50000 hours, these are having a hard time reaching 2160 hours. The same could probably be said of the PSUs.
I think you give Bitmain too much credit. They probably used the cheapest fans that would just barely fit the bill. Like the PSU.. M Oh, I'm sure they did. It would cost a fraction of a penny more for that rubber oil seal in the quantities they're buying.. Look at how much people were crying that the S4 was too expensive when it came out, imagine if they had put a quality PSU and 4 Delta fans. They have no choice to compromise, I guess. I'd be willing to pay a bit more for a quality PSU and fans, but most people would complain I imagine. The only quality parts in the S4 are the actual hash boards that were made by bitmain, the rest is outsourced lowest bid junk unfortunately. I'm sure bitmain thought those parts would be adequate for the job, but they had no way of telling for sure. Now they know. I'm certain they have some space in their profit margin to sell at the same price, use higher quality components, and still make money (just not quite as much). M Without a doubt. Hopefully they'll up the game a bit with the S6. |
|
|
|
I'd like to state that I don't think this is Bitmain's fault, as they didn't manufacture these fans. It would be nice of them to extend the 3 month warranty for the fans, though, as these seem to be failing pretty close to the 3 month mark. A quality fan usually has a MTBF of 50000 hours, these are having a hard time reaching 2160 hours. The same could probably be said of the PSUs.
I think you give Bitmain too much credit. They probably used the cheapest fans that would just barely fit the bill. Like the PSU.. M Oh, I'm sure they did. It would cost a fraction of a penny more for that rubber oil seal in the quantities they're buying.. Look at how much people were crying that the S4 was too expensive when it came out, imagine if they had put a quality PSU and 4 Delta fans. They have no choice to compromise, I guess. I'd be willing to pay a bit more for a quality PSU and fans, but most people would complain I imagine. The only quality parts in the S4 are the actual hash boards that were made by bitmain, the rest is outsourced lowest bid junk unfortunately. I'm sure bitmain thought those parts would be adequate for the job, but they had no way of telling for sure. Now they know. |
|
|
|
Picked up a couple hundred TH on miningrigrentals. Owner of the rig pushed it up to over 600 TH to ramp it up. It's settling back down to the 200 I rented. Yes I overpaid for it... But the gambler in me is hoping we hit a few blocks in the next 6 hours Just rented some myself. I did good on what I rented the other day when we hit those back to back blocks. Hoping to repeat it again. do take note, if possible rent those rigs as close as possible to your own node or whichever node that you may be mining at. high latency no good for p2pool. I was renting on Westhash which the node is in the Chicago area, which I think would be about somewhat centered as far as east/west. You have no way of knowing the miner's ping from their location to Westhash, only your node to Westhash. There could easily be an extra 100-200ms that you can't measure. |
|
|
|
Prelude, thank you for taking the time to share. Please let me know which replacement fans you are using. I am going to check all of my units now. I will always share anything useful if I find such.
For now, I haven't replaced any. The fans which have stopped spinning entirely I've repaired by replacing the lock ring, and re-oiling them. Had to sacrifice 3 perfectly good fans to take their lock rings.  I just finished re-oiling 8 fans across 2 S4s. As troublesome as it is, I sincerely think it's something everyone should do. Half of the fans were filled with dusty crap as pictured earlier, while the others still looked brand new. Some of the bearing were a little stiff, and their fan hubs had a very rough "travel" when you push them inwards. Re-oiling them seems to have helped a lot. Hopefully this will save them from their inevitable fate. If you do re-oil them, you won't be able to reuse the black sticker that was covering the fan. Having nothing better on hand, I used duct-tape to cover the hole and keep the oil "sealed" in. I used Amsoil 5W-20 synthetic oil, which probably isn't the best for re-oiling a fan bearing but once again, it's what I had on hand and it's always worked great for me in the past. I'd like to state that I don't think this is Bitmain's fault, as they didn't manufacture these fans. It would be nice of them to extend the 3 month warranty for the fans, though, as these seem to be failing pretty close to the 3 month mark. A quality fan usually has a MTBF of 50000 hours, these are having a hard time reaching 2160 hours. The same could probably be said of the PSUs. |
|
|
|
So the fans on my S4s are starting to drop like flies. So far I've had 3 die in a span of 2 weeks, and decided to see if they were salvageable. I've re-oiled fans before, so I figured I'd give that a shot. Here's what I found:  Bearing lubricant is completely dried up, and the lock ring popped off due to what I assume to be wear from a lack of lubricant. Fans normally have a rubber plug to seal the oil in, but these do not. They only have a sticker over the hole, which in my opinion is a fatal design flaw. I've had 3 out of 20 go bad so far, with a few more showing signs of degradation in the form of slower RPM than normal. I expect them all to go bad in due time because of this flaw, unfortunately, and you should too. Hopefully Bitmain will consider sending out proper replacements to their customers, as these fans are completely unacceptable considering the lack of a rubber oil seal. I managed to fix this one by taking the locking ring from another 120mm fan, but I still don't have an appropriate plug for the hole. I'll need to figure something out, and re-lube it. |
|
|
|
|
2500. Hopefully we've developed FTL travel by then, and I can explore space.
|
|
|
|
|
Great products and a pleasure to deal with.
|
|
|
|
Finally getting around to selling some of my GPUs. Shipping from Montreal, Canada. Local pickup not a problem. Escrow is fine, buyer pays escrow fees. Here's what's available with prices in USD: 7950: 1x Sapphire Reference $125 3x Gigabyte Windforce 3 $135 7970: 15x MSI/Gigabyte/Diamond/Sapphire Reference $150 6x Sapphire Dual-X $150 1x Powercolor (no fans) $120 6x Asus DC2 (tripple slot monsters) $170 1x Asus Matrix Platinum $200 280x: 1x Sapphire Dual-X (good fans) $150 (Only 1 left!) 6x Sapphire Dual-X (bad fans) $120 1x Asus DC2 (Dual slot version) $170 290: 16x Sapphire Reference $200 1x MSI Gaming Edition $220 These have all been tested working 100% by running 3 hours of benchmarks / games on them. Each test consists of 1h Unigine Valley, 1 hour 3DMark, and 1 hour BF4. A few reference 290 and some 7970 cards have had their back plates modified to allow better cooling and reduced noise:  |
|
|
|
|
Did you get them in today?
|
|
|
|
|
I'll make a 3.5 BTC offer.
|
|
|
|
|
sloopy, good call on changing the PSUs on the S4s. They are garbage, I've had 4 out of 5 die so far. I'm using Delta 2000w (DPS-2000) as replacements with sidehack's breakout boards and couldn't be happier with them.
|
|
|
|
|
A big thank you to whoever has been donating lately!
|
|
|
|
|
Show Posts
