I though only Lattice FPGAs and ASIC is economical for mining, although using your unused GPU power makes sense... if your power is cheap. The bitcoin buzz has blown over and will die off when a better crypto currency takes over.
It's not a 'better option', it's more like 'the only option that will get you more than a micromillicoin'. CPU mining was viable years ago, though.Well yes, but I figured a server with a GPU is a better option than trying to do it with pure CPU on a VPS or DEDI without GPU access. To really make anything mining though, the two machines you mentioned are your best bet. However, you need a nice chunk of change for those dedicated mining setups.
If they do it, they will be given a 'bulk' CPU SLA level. For bitcoin, it seems really unprofitable to me. I don't see how you would get any coins on an e3-1270v2 when you are competing against people with ASICs.I think TortoiseLabs does? May need to send them a sales email and find out.