Budget GPUs

[elidell]

I'm building a box that will eventually have 4 gpus.  It will be Ubuntu or The-Distribution-Which-Does-Not-Handle-OpenCL-Well (Kali) most likely, and I'm looking for an up to date list of the best gpu for the buck.

I have one 750 psu 8gigs of ram.

Every post I have seen on this topic is from 2015, and I'm hoping to find suitable GPUs that will work easily with Linux and not cost a small fortune.

Thanks in advance

Erik