Try EWBF miner and see if something changes.
800 euro is a very limiting budget and you have 2 main choices:
- Build something that can be upgraded (scalability)
- Build something tailored for max performance (most sol/s with 800 euro)
I’ll try to make a solution beetween these two main factors, so here is an idea:
MB - 93 euro
CPU - 48 euro
USB for OS - 9 euro
RAM - 37 euro
PSU - 180 euro
2x GPU - 350 euro
Total: 717 euro
You still got 92 euro for risers (you can find them on amazon), i suggest cryptomined from china (high and solid quality products)
4x risers 6 PIN - 45 euro (31$ risers + 15$ shipping in europe)
Grand total: 762 euro
You still got 38 euro for any spare parts/rig/keyboad/etc.
So with this system you would get 340 sol/s for 180W:
That’s 30$ profit a month (55$ income - electric cost)
So, with this solution you’ve got some scalability, the MotherBoard can support at least 4 GPU, maybe even 5.
With a little future investment (350 euro) you can add 2 more 1050ti and get:
75$ profit (115$ - eletricity)
After this you can start buying more serious cards and selling the 1050ti for 100 euro (even in 8 months) so you can upgrade sol/s. Would suggest after 1050ti-> 1070 and then -> 1080ti (or newer card).
Upgrading gpu’s you should expect adding a 1000W for the 1070’s and two 1000W for the 1080ti’s.
Oh yeah, for mining i would install simplemining on the usb drive (2$ a month subscription, really easy to implement). BIOS settings are fundamental for successful mining rig.