With reputable escrow from the forums. Let me know if you have some to sell (USA based).

Many thanks

Hi. Just as the title says. Will use forum escrow from a reputable member. Thanks in advance.

Hi,

I was looking for a pinned message or something similar, but could not find it. I'm planing to buy a GPU from someone here (he seems to have a good reputation) but want to do it via escrow, for the safety of both parties. What trusted members from these same forums provide those services? (and are trusted enough for that).

sorry, newbie asking.

Many thanks!

[a) Invest time in prep-work!]

Hello,

Been mining since nov 2017 with 3x 13 GPU rigs (39 GPU, mostly 1070, 1080 and 1080ti). I'm sharing my two cents for anyone interested:

a) Invest time in prep-work! what is the layout? which frames? how many PSUs? how many splitters? this was done, but I underestimated the prepwork. I ended up buying more PSUs with less wattage, were (in my case) fewer PSUs with more wattage would suit better the layout. The prep-work is extremely important and vastly underestimated, especially the layout, # of PSUs units, and # PCIe splitters (so everything fits nice and tidy).

b) if using windows, CPU and RAM DOES MATTER!!! try using afterburner in a 13 gpu with a celeron and 4gb of ram... it is a pain in the ass! switch to i3/i5 with 8gb and is a cool breeze. For example, when using celerons I was getting a delay in everything. Move a slider, 3 second delay, decrease voltage, 8 second delay. For mining this is not a problem, but for tweaking, it is. Imagine spending 4 hours tweaking your rig when you could have done so in 20 minutes (because of delays).  I have not use any other OS, so I'm sure this is a windows thing only.

c) tweaking =  free GPUs (in a sense): with 39GPUs a small increase in efficiency goes a long way. You teak a GPU for 2% gain and thats ok, tweak 39 with 2%-5% increase in each and you will find yourself with "1 or 2 free 1080ti gained by tweaking".

d) heat is an issue: oh yeah it is, specially if you live in the Caribbean... fortunately I found a well ventilated place where temps are usually at 27c (this is cold for my country). Good ventilation can reduce the temps by a long, long way.

e) 220/230V is mandatory: see point c, is the same concept. Higher efficiency in one PSU is nice, Higher efficiency in 10 PSUs is nicer .

f) chasing the dragon is bad idea: I spent months mining new coins trying to chase the next pump. Bad idea, the only good coin I mined that mooned was GIN coin and I sold it 10x cheaper than its ATH. It would have been better for me to just mine ETH with the pill or any other oldschool/popular coin (as equihash before the ASICs).

g) stability vs profitability (another chasing the dragon): I've also spent many a night tweaking my rigs just to increase a small  percentage, this turned fine until I went to work and my rigs were frozen, which means wait till the night to reset them, lower the OC and bring stability. In the long run, stability will always win (I can't use smart plugs or "resetters" for this as I have frequent blackouts in my country and smart plugs or "resetters" DOES NOT turn back on after a blackout, they need a manual input), if you know a solution for this, please let me know.

Anyway, just wanted to share this. I have a lot of more learned lessons, but for now this will suffice as I got to get back at work! hopefully it will be useful for new miners.

Cheers,