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1  Alternate cryptocurrencies / Mining (Altcoins) / Re: PhoenixMiner 5.5c: fastest Ethereum/Ethash miner with lowest devfee (Win/Linux) on: April 30, 2021, 02:22:38 PM
Can we somehow get absolute core clock setting for NVIDIA?
2  Alternate cryptocurrencies / Mining (Altcoins) / Re: Has anyone gotten the Gigabyte B250 Fintech Mobo to work with 10+ GPUs? on: March 14, 2021, 09:15:10 AM
If someone finds this one, I posted my solution here:
https://bitcointalk.org/index.php?topic=5323807
3  Alternate cryptocurrencies / Mining (Altcoins) / How to possibly fix Gigabyte B250 Fintech not booting with more than 9 GPUs on: March 14, 2021, 09:14:38 AM
Hi,

so I found a possible solution for the said problem.

Problem
Gigabyte Fintech 12 GPU B250 mining mainboard does not boot / post after connecting more than 9 GPUs.
It does not depend on which PCIe slots you use, just disconnecting any card helps, as long as there are no more than 9 connected.

Intro
.. As stated, if the problem solves by disconnecting any of the cards so that there are only 9 connected, you can quickly check if you have that specific problem. There is still a possibility, that your PSU is the problem, especially, if you built a new rig and boot up for the first time. Maybe your rig just draws too much power.
.. It still might be a riser, although you ruled that one nearly out by confirming it is not related to specific GPUs.
.. Might still be a defective component on the board.

Steps done before in no particular order, that were not related to the solution and did not solve the problem
.. Switched RAM and CPU
.. Switched RAM slots
.. Loaded defaults in BIOS
.. Reflashed recent BIOS
.. Flashed old v3 BIOS
.. Checked every setting and deactivated all unneccessary devices
.. Mining mode is enabled, 4G decodeing is enabled, primary video device is integrated GPU etc...

Solution
There seems to be a problem with some boards and also with the new 4a BIOS version. In one case it helped to just flash back version 3, but in another case, that did not help.
The solution was to flash all BIOS versions from the beginning in the right order. You need to download all the files from Gigabyte and just put the BIOS files on a USB stick in order to use the on board flash tool EZ Flash from within the BIOS. Important: Make sure to always chose the "full" upgrade of the BIOS, if given a choice by EZ flash!
So I started with 9 cards connected because I was lazy and did not want to disconnect every card. Flashed F1, then rebooted into OS, shut down. Flash F2b. F2b for some reason did not boot at all with GPUs attached. So I needed to disconnect all cards to have it boot into OS. Shut down. Flash F3. At this point your board should work fine with 12 cards again with the right settings. Do not flash F4a! This will bring back the problem. For science I did. If you do not mess up with a lot of things, flashing back to F3 fixes this again at this point.

Conclusion
Seems that there goes something wrong in the BIOS that gets solved only, if you flash all versions in correct order until V3 (always chose complete flash!). F4a seems to be one cause of the problem. But also boards that do not have F4a installed seem to have this problem, also fixed with the provided solution. At least for boards I had so far.

I hope this helps and I would appreciate feedback! Btw. 300 posts Smiley
4  Alternate cryptocurrencies / Mining (Altcoins) / Re: PhoenixMiner 5.5c: fastest Ethereum/Ethash miner with lowest devfee (Win/Linux) on: March 08, 2021, 05:05:50 PM
The actual transaction will be done in about 30 minutes so everyone interested, please check here that the transaction does not exists yet:

https://etherscan.io/address/0x008c26f3a2Ca8bdC11e5891e0278c9436B6F5d1E

The transaction is confirmed, you can check it here: https://etherscan.io/tx/0xdb61993bb0fcdf73cf9f36f0bfd834b20d365d2cda170685362a28f47f7bea9b

I should have become a dev for miner software.................

Fair enough for me, I will continue using Phoenix miner.
5  Alternate cryptocurrencies / Mining (Altcoins) / Re: PhoenixMiner 5.5c: fastest Ethereum/Ethash miner with lowest devfee (Win/Linux) on: March 08, 2021, 11:45:41 AM
We need proof, that the Phoenix account here is not hijacked. Imagine someone setting up new accounts with malicious software and the real Phoenix guy is still gone.
This is just a thought I have, no evidence! I dont want to spread FUD, but I will only use new Phoenix versions released here, after I get some proof. Someone mentioned moving a specific amount of the dev funds announcing it here, so we can verify on chain that the real developer is here.

On the other hand one can say, Nicehash is not credible. But since it is such a big entity in this space, if they give out an official warning, it is hard to ignore. So Nicehash should be more careful, if this was just FUD, otherwise the users will ensure it wont be a big entity in the space anymore in the future.
6  Alternate cryptocurrencies / Mining (Altcoins) / Re: PhoenixMiner 5.5c: fastest Ethereum/Ethash miner with lowest devfee (Win/Linux) on: March 07, 2021, 10:55:04 AM
https://www.nicehash.com/blog/post/stop-using-phoenix-miner-immediately

NH press release.
We need some dev to look into this. If it is malicious, it might impact a lot of users in a bad way that mine on their main computers.

The main question is who actually downloaded the phoenix miner from the unofficial sources and then included it in their nicehash software package for everyone to download? Answer: nicehash employees Wink

So don't blame the Phoenix now as he is not here to defend himself. So far it has proven to be stable software so I'll keep using it myself.

Also, there is no proof it is malicious so I'd advise nicehash against spreading the fud based on a single fact that it was removed from Mega. Claymore was also removed from Mega and no one panicked about it.

I know they're working on their excavator and they don't need/want phoenix anymore, but that's not the way to handle such transition. Very unprofessional, classic nicehash.

I agree with you. The only point I am a bit concerned is, that it is one thing to state there is a problem or a bug or some inconsistency, but a very different other thing, to advice users to reinstall their OS and consider all their data, wallets, logins compromised on PCs that ran phoenix. You know what I mean? It would be a bit insane to spread FUD on this level for marketing reasons.
7  Alternate cryptocurrencies / Mining (Altcoins) / Re: PhoenixMiner 5.5c: fastest Ethereum/Ethash miner with lowest devfee (Win/Linux) on: March 07, 2021, 10:42:40 AM
https://www.nicehash.com/blog/post/stop-using-phoenix-miner-immediately

NH press release.
We need some dev to look into this. If it is malicious, it might impact a lot of users in a bad way that mine on their main computers.
8  Alternate cryptocurrencies / Mining (Altcoins) / Re: Has anyone gotten the Gigabyte B250 Fintech Mobo to work with 10+ GPUs? on: March 05, 2021, 01:54:07 AM
Hi,

I reactivate this thread since my issue fits quite well. I am using several Gigabte Fintech boards and got my first one with problems now. It works well, but as soon as I put in a 10th GPU, it does not post anymore. To make it a bit shorter: I switched the boards with a working 12 GPU Rig with the same board and suddenly the rig posted and hashed. The "defective" on the other hand did not even post in the 12 GPU rig. And as soon as I disconnected 3 GPUs, it booted normally. It is not bound to specific PCIe ports, it does not matter which are connected, as soon as it is more than 9, it does not post. So its not the PSU, riser etc. it seems to be the board. All my other Fintechs work fine woith 12 GPUs.

Do I have a defective board?

What I tried, without success:
-Loaded defaults in BIOS
-Reflashed recent BIOS
-Flashed old v3 BIOS
-Checked every setting and deactivated all unneccessary devices
-Mining mode is enabled, 4G decodeing is enabled, primary video device is integrated GPU etc...

Is Link Speed Gen2 fixed, when mining mode is active? Because I was not able to change it to Gen1, it kept resetting after reboot.

I also swapped the CPU and RAM an checked all the cables.

Is there anything I can do or is my board just faulty and not able to run with more than 9 GPUs? It seems strange because this board worked for months with 6GPUs now and I would not expect it th just be fine except for the last 3 GPUs.

Thank you in advance for any help!
9  Alternate cryptocurrencies / Altcoin Discussion / Recover corrupted Zcash wallet.dat? on: February 05, 2021, 01:24:09 PM
Hello,

due to a really stupid chain of events, I ended up with a corrupted wallet.dat file of a Zcash wallet after a worst case scenario with data loss. Please do not ask about the seed phrases, I know they should have been backed up and with this exception my seed phrases are very safe for every other wallet - except this.

Now, I am trying to dump the wallet.dat for the private keys with pywallet. But when trying to dump the wallet with
Code:
python pywallet.py --dumpwallet --wallet=C:\*pathtowallet*\wallet.dat > wallet.txt

into a txt, I am getting

Code:
(22, 'Invalid argument -- BDB2509 the log files from a database environment')

Maybe there is another way to do this?

Thank you in advance!
10  Alternate cryptocurrencies / Mining (Altcoins) / Re: Mining room cooling - How to modify the room on: January 31, 2021, 11:02:07 AM
So that would be a 3rd option.
Problem is, that the room has several carriers at the ceiling - like 15cm bumps. Could hang the piping unter that.
Also, due to the pressure lose within the ducts, i would have an over pressure in the room because the exhaust fan would have to push air through several meters of ducts.

Would need to split the room anyways since it is too long.

But would it make so much of a difference?

I mean, if I such out the air of a 65m hot room with 8000m and supply on the cold side the same 8000m of fresh air, would that not be enough? It is an air exchange of over 2x per minute. Because it is easy to install some insulating panels to split the room. but not that easy to install meters of 500mm ducts hanging from the ceiling.

Calculate the BTU load coming off the gear and that is answerable.  I know that forcing the air to flow through the gear is the best way.  Just through a room means most air is not coming in contact with the hot parts. 

I use a similar process to cool a cubic meter plywood box.  Its got around 60~75 gpus in it and at the bottom are filters for air in.  Out the top is a meter diameter fan that runs wide open and even in very hot summers the gpus all run below 70c (air temp will get to 100+F...there is math involved and its the weekend). The air is forced to pull through the smaller inside box containing the rigs.  And you can size the duct as needed....but the window size is the throttle point of the whole system...i would probably put a fan on outpu and one in or near input...  similar to asic designs...push pull...i mean thats exactly what they are doing...just they have a small densly packed space...you gotta have some room to work and such on them.

For the calculation, it would be about 20kW of hardware.

You are referring to the 3D drawing with your answer, right?
But I would also need to make gaps, so that the air only goes through the miners, right?
If we take my initial design, wouldnt that be somehow similar, even if not optimal?
I mean, I am going for a simple solution. The ceiling is not really good to mount anything on it, I would need to support the duct with columns. Even the lamps were a pain to mount because of the structure of the ceiling.
11  Alternate cryptocurrencies / Mining (Altcoins) / Re: Now you can know your 3080/3090 Memory temps ! on: January 31, 2021, 10:56:13 AM
So here are some examples:

Re-padded Gigabyte OCs 3080 with Thermal Grizzly 8 Pads:
98C, 98C, 94C, 96C

Stock ASUS TUF OCs 3080:
100C, 104C, 106C, 104C.....

I dont like that. Should I consider doing a pad replacement on the ASUS, too? Worry about warranty.

I used gelid extreme and saw drops from 110 the 80s from stock...

Just saw a disassemble on YT. The TUF seems to have already a lot of pads and a dedicated little heatsink on the memory. I dont know if you can achieve very much by repadding.
Maybe the way to go is to put some copper fin elements onto the backplate?
12  Alternate cryptocurrencies / Mining (Altcoins) / Re: Now you can know your 3080/3090 Memory temps ! on: January 31, 2021, 09:36:09 AM
So here are some examples:

Re-padded Gigabyte OCs 3080 with Thermal Grizzly 8 Pads:
98C, 98C, 94C, 96C

Stock ASUS TUF OCs 3080:
100C, 104C, 106C, 104C.....

I dont like that. Should I consider doing a pad replacement on the ASUS, too? Worry about warranty.

I used gelid extreme and saw drops from 110 the 80s from stock...

On the ASUS TUF?
How thick were the pads you used?
13  Alternate cryptocurrencies / Mining (Altcoins) / Re: Mining room cooling - How to modify the room on: January 31, 2021, 01:38:22 AM
So that would be a 3rd option.
Problem is, that the room has several carriers at the ceiling - like 15cm bumps. Could hang the piping unter that.
Also, due to the pressure lose within the ducts, i would have an over pressure in the room because the exhaust fan would have to push air through several meters of ducts.

Would need to split the room anyways since it is too long.

But would it make so much of a difference?

I mean, if I such out the air of a 65m hot room with 8000m and supply on the cold side the same 8000m of fresh air, would that not be enough? It is an air exchange of over 2x per minute. Because it is easy to install some insulating panels to split the room. but not that easy to install meters of 500mm ducts hanging from the ceiling.
14  Alternate cryptocurrencies / Mining (Altcoins) / Re: Mining room cooling - How to modify the room on: January 31, 2021, 01:20:42 AM
1 is better but i think you are wasting some space.  have the exhaust at the far wall opposite the rigs (up top heat rises). No need for a lot of room...just insulate the return pipe and run it over head.  Then put a baffle at the incoming air so that it comes in at the floor down low...blowing in will travel across through gear into the exhaust fan on opposite wall.  Then consider walls in same direction as air is coming but with holes cut out for the rigs/gear.  This way the air that is moving has to move through the wholes in the wall.  You may be able to have 2 or 3 such walls and pull the air through just the rigs/gear before getting to exhuast. 

Just a thought.  The problem with an open area is that air will flow only around the most effficient path and not the other corners areas...lowest rig..etc

Hi thanks for the reply,

I can not mount the exhaust opposite to the window, because it is a basement and there is only this one big window.
Also, guiding the intake air to the bottom with a fan in front and sucking the hot air from top using 10 fand to blow the air around in the room, is actually my concept as of now! but the air just mixes and gets quite warm altogether. In winter fine, in summer too hot. So i thought of making the room smaller. It is like 15 meters long, thats too big. I am using only 5-6 meters for rigs anyways and there is still room for more. I could may out my power without using even half of the room, so since I use the from area for storage, it would be nice to have it not so hot.
Leading again to my above two options...
15  Alternate cryptocurrencies / Mining (Altcoins) / Re: Now you can know your 3080/3090 Memory temps ! on: January 31, 2021, 01:13:48 AM
We might need some qualified comment from a tech person though.
Maybe we should consider downclocking the mem!?
16  Alternate cryptocurrencies / Mining (Altcoins) / Re: Now you can know your 3080/3090 Memory temps ! on: January 31, 2021, 12:46:18 AM
So here are some examples:

Re-padded Gigabyte OCs 3080 with Thermal Grizzly 8 Pads:
98C, 98C, 94C, 96C

Stock ASUS TUF OCs 3080:
100C, 104C, 106C, 104C.....

I dont like that. Should I consider doing a pad replacement on the ASUS, too? Worry about warranty.
17  Alternate cryptocurrencies / Mining (Altcoins) / Mining room cooling - How to modify the room on: January 31, 2021, 12:10:50 AM
Hello,

I have my rigs in a basement room with a window. The room itself is 150m (yes cubic meters) big. On the one end there is a high window, like this:


At the moment, there are just 2 fans. One fan pulling 2000 m/h in through half the window and one fan pushing 2000m out through a pipe out of the other half of the window. Due to the pipe pointing to the side outside, the air does not mix outside.

Now I am planning to optimize the airflow and separate the room into a hot and a cold side. I have thought of two options:

(The grey box on the bottom is a door.)

At the moment I have all my GPUs in oben wire shelves hanging. Both options would leave me the possibility to cut holes into the separating panel, to use it to push exhaust air directly through a rig os ASIC to the hot side, if needed.

What do you recommend and why? Any other ideas or hints?

Thank you very much in advance for any advice!
18  Alternate cryptocurrencies / Mining (Altcoins) / Re: AMD Mem Tweak XL - Read/modify timings/pp/straps on the fly on: January 13, 2021, 10:54:59 PM
Hey guys, how do I get the settings to stay after a reboot?
19  Alternate cryptocurrencies / Mining (Altcoins) / Re: GPU miner in closed (server) cases - need some help on: June 03, 2020, 08:06:39 AM
I checked the recommended cases and looked a bit around. I thought of maybe combining 2 cases with one mainboard. Since I am going to stack them, I could build 12 GPU rigs with 6 in each case.
Did anybody do this? or are there maybe "two level" cases for 12 GPUs?
20  Alternate cryptocurrencies / Mining (Altcoins) / Re: GPU miner in closed (server) cases - need some help on: June 02, 2020, 05:23:11 PM
Are deltafans and server cases the better way to go thermal wise? Because I could also just put the rigs in smaller stackable open air frames and enclose them in a custom built tent with a top exhaust cap connected to the vent. Fresh air could be just blown into the room, to use the cooled down air of the basement on hot days.
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