@greenidogg I would hold any purchase of 2x cards for now, since the engine still does not support it, you might find issues having two cards installed while using UE4. They said it is on the roadmap at GDC 2019, but might happen only next year.
Also, you will need quite a good machine to hold 2x cards. Power supply will need to hold the power drain and also the motherboard has to have two PCIe x16 slots to take full advantage of the graphics card capabilities. The computer case will need to have a great cooling system to not overheat, bringing the performance of the system down because of it, so it must be a large case and preferably under environment air conditioning to at least 25 degrees Celsius maximum. All of these are added to the final price. The size of the card matters, not only for the case but the space it occupies on the motherboard between slots, since there are cards which needs 2 or 3 slots space to be mounted and you need some extra space between cards!
- 1 single RTX 2080TI will be enough for any application you need to work with. Unless you work with CAD and also FP64 precision.
- be sure to purchase a RTX 2080 TI model from a brand that you will be sure will still be around and are well known, so you can purchase the 2nd later.
- 2x RTX 2080TI will be almost equivalent to a RTX 6000 for a fraction of the price
- will still need a good case and power supply, but less than with 2x Titans.