I am looking to build a GPU mining rig one for a budget of 1500 and one for a budget of 3000.

The 1500 one you can assume I don't have to pay for electric if that makes a difference.

For the 3000 I will have to pay for the electric.

I know nothing about doing mining.

I also have a gtx 960 that could be used in either builds but I doubt it will do much

New miners are always coming out making existing builds not worth the wild

I'm selling a 6 gpu rig -- 3 rx580 3 rx570 for 2k..  if you want two, I can sell another 6 card rx 580 rig for additional $1800.. so 2 rigs, 12 gpus for 3800.

evga gold PSUs MSI  z270-SLI plus mbs

 

text me at  (321) 252-9046 if interested

I would recommend to collect a good basis, which can then be bought in addition to the GPU
- Asus b250 minig expert
- Palit GeForce GTX 1080 Ti JetStream (SuperJetStream, GameRock) - e-Bay, pre-owned, the cheaper-the better
- SSD M.2 Samsung Evo 970 250gb
- Celeron, Pentium, i3...
- power supplies only quality with protection (bronze, gold, it does not matter)

Buy only 1080ti or HD 580 8gb
Other GPU can purchaser, provided that the cheaper 40-50% of market value

You can start with 1 GPU and then buy up to 19