Topic: Building Cheap Miners : My "Secret" - page 29. (Read 60235 times)

I will be CPU mining ITNS on them at the moment.

Assuming ITNS has an even partial price recovery I estimate I can get them paid off in 4-6 months on CPUs only.

My fallback is Yescrypt mining which is also quite profitable on CPUs... but I am a big holder of ITNS & I've mined since August on a smaller scale. I believe the project has potential so I want to mine as many as I can.

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Also... I will be experimenting with adding GPUs to them as they do have robust PSUs and several PCI-E slots.

whoa what are you doing with these servers exactly? very curious!

Holy shit.. how much did you drop on that? $50,000?

So I am learning Linux in preparation for my Dell PowerEdge R815 servers to get here... ended up grabbing 36 of them total (initially I bought 9... but I couldn't help myself).

These things are cheap to work on too... 2GB RAM sticks are $5-7 each... NEW hard drives are $38.99 each (300GB)... so I'm liking that as a value guy (hence my love for the HP Z400s).

Can't wait to fire them all up and rack up some ITNS coin!

Today I installed Ubuntu on my Gigabyte BRIX mini system and my single HP DL580 G7 system. I had been using ETHOS on the DL580 but I couldn't get a lot of stuff to work... so switched over. On the BRIX I tried PIMP-OS first but it didn't like the integrated graphics.... looks like I'm gonna be a solid Ubuntu guy on all the Dells.

So I am learning Linux in preparation for my Dell PowerEdge R815 servers to get here... ended up grabbing 36 of them total (initially I bought 9... but I couldn't help myself).

These things are cheap to work on too... 2GB RAM sticks are $5-7 each... NEW hard drives are $38.99 each (300GB)... so I'm liking that as a value guy (hence my love for the HP Z400s).

Can't wait to fire them all up and rack up some ITNS coin!

Today I installed Ubuntu on my Gigabyte BRIX mini system and my single HP DL580 G7 system. I had been using ETHOS on the DL580 but I couldn't get a lot of stuff to work... so switched over. On the BRIX I tried PIMP-OS first but it didn't like the integrated graphics.... looks like I'm gonna be a solid Ubuntu guy on all the Dells.

So I am learning Linux in preparation for my Dell PowerEdge R815 servers to get here... ended up grabbing 36 of them total (initially I bought 9... but I couldn't help myself).

So I am learning Linux in preparation for my Dell PowerEdge R815 servers to get here... ended up grabbing 36 of them total (initially I bought 9... but I couldn't help myself).

These things are cheap to work on too... 2GB RAM sticks are $5-7 each... NEW hard drives are $38.99 each (300GB)... so I'm liking that as a value guy (hence my love for the HP Z400s).

Can't wait to fire them all up and rack up some ITNS coin!

Today I installed Ubuntu on my Gigabyte BRIX mini system and my single HP DL580 G7 system. I had been using ETHOS on the DL580 but I couldn't get a lot of stuff to work... so switched over. On the BRIX I tried PIMP-OS first but it didn't like the integrated graphics.... looks like I'm gonna be a solid Ubuntu guy on all the Dells.

Correct.  When I ran it with the default settings out of the box I think I got around 250 also.   Here is my cpu.txt:


"cpu_threads_conf" :
[
    { "low_power_mode" : 5, "no_prefetch" : true, "affine_to_cpu" : 0 },
    { "low_power_mode" : 5, "no_prefetch" : true, "affine_to_cpu" : 1 },
    { "low_power_mode" : 5, "no_prefetch" : true, "affine_to_cpu" : 2 },
    { "low_power_mode" : 5, "no_prefetch" : true, "affine_to_cpu" : 3 },
    { "low_power_mode" : 5, "no_prefetch" : true, "affine_to_cpu" : 4 },
    { "low_power_mode" : 5, "no_prefetch" : true, "affine_to_cpu" : 5 },
    { "low_power_mode" : 5, "no_prefetch" : true, "affine_to_cpu" : 6 },
    { "low_power_mode" : 5, "no_prefetch" : true, "affine_to_cpu" : 7 },

],

In most situations you wouldn't mine using the hyperthreads let alone affine to them, but I think this low power mode must be less cpu intensive at the cost of more memory.

In /etc/security/limits.conf  I also added the following 2 lines:
* soft memlock 262144
* hard memlock 262144

and in /etc/sysctl.conf added:
vm.nr_hugepages=128

Yah I forgot you didn't get the same model as me.  I would honestly recommend trying to run this on command line linux before getting too crazy with hardware modifications.  Windows has so many stupid power saving functions built in that I wouldn't be surprised it there is something slowing this down, especially if speedstep is enabled. Linux will run it at full bore.    If you aren't worried about warranty returns though it might be worth it to completely disassemble that case and let it run out in the open.

As for those processors you posted,  there are a few on ebay, but they are around $200.  not bad, but not really groundbreaking considering you can't put more than one on a MB like the higher end xeons.   50 bucks for the 5775Cs would be a screaming deal though.  Those are even more rare and anyone selling them thinks they are worth 400 bucks.  I like the Alibaba listing that says "professional test" and shows what looks like a bunch of community college world of warcraft players sitting there.

I dont think you understand, mine is thermally throttling. As in, its hitting the max temp allowed (99C) and in HWinfo64 indicates 2 cores are throttling. Yes, it turbos fine but the 4770R is built on a 22nm process and what youve got is 14nm and likely more efficient even if the TDP's might be the same. (though yours may be configured at a lower TDP as allowed by intel).

I need to crack mine open and repaste. 100C is actually super hot for CPU's and personally ive never owned one thats maxed out its Tjunction max like that.

I disagree.  Mine has been mining non-stop since I posted my initial link.  No display, no heat issues.  There has to be something up with your settings.

Make sure you go into the Brix Bios and go to the Advanced Screen and set Turbo Mode to on.

I found that running it without a display connected would cause it to run at like 340 H/s. Mine also will literally hit Tjunction max and throttle two of the cores. Never had a computer that literally maxed out temp wise (99C)

These Brix units are about as poor a miner money could buy, even a laptop might be better at dissipating heat. Good numbers but very unstable and a headache in general.

That said, if the CPU were on a typical motherboard I doubt there would be any issues, at least heat wise.

Ultimately my plan was to aquire these CPU's : https://www.alibaba.com/product-detail/Intel-E3-1265L-V4-QHF4-QHF6_60666712127.html

I bought one to test with, knowing it would hash lower due to the lower GHz but still be viable since it has the 128mb L4 cache. But the Chinese ended up screwing me claiming they were "out of stock" AFTER my initial and shipping payment has cleared...... Like you fuck you if you sell shit you dont have, at least be fucking up front about it! and the listing is still up!

I inquired about these for $50 each, but they randomly quoted me $293. https://szbrilliant.en.alibaba.com/product/60665524980-804912762/Intel_Core_i7_5775C_Processor_6M_Cache_up_to_3_70_GHz_LGA1150.html?spm=a2700.icbuShop.prewdfa4cf.8.32efd7dd1sqMNO

Not sure what the deal is with these people but its fucking irritating and I hate it.

Never again with Alibaba or any of that Chinese shit. My first and only dealing with them.

Mine is, but I don't think its throttling.  I am trying to figure out the root cause.  Mine will go hours at 600+ H/S, sometimes 12-24 hours, then it will start dropping to around 250.  Heat is always the first suspect, but it i stop and restart the miner it shoots back up to 600+ again and stays there.  If it were thermal related I think it would still be low when starting the miner back up (im talking about stop/starting the software, not the whole computer).  I just leave my ssh console open all of the time and occasionally glance at it.  Running it Sudo seems to help

My environment is a little different than other posters though.  I modified some settings in the BIOS and I am also running on ubuntu 17.10 without x windows so there is no GUI or other running processes that can drag down the CPU.  When I get home tonight I'll take a few pics of my bios settings.

I think using this with Windows may be part of the problem.  Windows will use the GPU which will start digging into the L4 cache.  Not to mention there are a million different windows processors that will drag it down.  I have Windows 10 on my main mining rig (which I use for personal use also) with an I7-7500k and just browsing a website in Chrome will cut my cryptonight hashrate in half.

If you are using Windows it might be good to follow this advice:  http://1stminingrig.com/best-windows-setup-configuration-tweaks-for-mining/  Generally I think this advice is kind of garbage but in this scenario I think it would help.  Which also reminds me, if you are running windows be sure you check your power settings.  There is a good chance Windows might treat the Brix like a laptop and downshift the CPU.

Mine is, but I don't think its throttling.  I am trying to figure out the root cause.  Mine will go hours at 600+ H/S, sometimes 12-24 hours, then it will start dropping to around 250.  Heat is always the first suspect, but it i stop and restart the miner it shoots back up to 600+ again and stays there.  If it were thermal related I think it would still be low when starting the miner back up (im talking about stop/starting the software, not the whole computer).  I just leave my ssh console open all of the time and occasionally glance at it.  Running it Sudo seems to help

My environment is a little different than other posters though.  I modified some settings in the BIOS and I am also running on ubuntu 17.10 without x windows so there is no GUI or other running processes that can drag down the CPU.  When I get home tonight I'll take a few pics of my bios settings.

I think using this with Windows may be part of the problem.  Windows will use the GPU which will start digging into the L4 cache.  Not to mention there are a million different windows processors that will drag it down.  I have Windows 10 on my main mining rig (which I use for personal use also) with an I7-7500k and just browsing a website in Chrome will cut my cryptonight hashrate in half.

If you are using Windows it might be good to follow this advice:  http://1stminingrig.com/best-windows-setup-configuration-tweaks-for-mining/  Generally I think this advice is kind of garbage but in this scenario I think it would help.  Which also reminds me, if you are running windows be sure you check your power settings.  There is a good chance Windows might treat the Brix like a laptop and downshift the CPU.

I just tried this out with an old dell T5500 and all I can say is that while it is slightly cheaper than building a rig from scratch, it may not really be worth it. I had power draw issues with 4 GPUs off the power supply and had to replace it. The hard drive most of them come with is rediculously slow, using Linux and doing any sort of block recovery can take hours instead of minutes so I had to replace it with an SSD. All said and done, I ended up with a motherboard, processor, case and ram for $150 which is a little better than spending ~250 on equivalent parts for a mining rig. However, in comparison, spending $100 more you have a machine which can support 2 more graphics cards. Personally, for my next build I will be going for standard parts again.

I just tried this out with an old dell T5500 and all I can say is that while it is slightly cheaper than building a rig from scratch, it may not really be worth it. I had power draw issues with 4 GPUs off the power supply and had to replace it. The hard drive most of them come with is rediculously slow, using Linux and doing any sort of block recovery can take hours instead of minutes so I had to replace it with an SSD. All said and done, I ended up with a motherboard, processor, case and ram for $150 which is a little better than spending ~250 on equivalent parts for a mining rig. However, in comparison, spending $100 more you have a machine which can support 2 more graphics cards. Personally, for my next build I will be going for standard parts again.