For a six-monitor setup, is it better single-card solution (e.g. this VisionTek Radeon HD 7870) or a two-card solution (e.g. 2xRadeon R9 280)?
Simplifications:
- All six monitors function independently (as opposed to being parts of a larger display).
- No video gaming or 3D AutoCAD-type applications.
- There are plenty of PCIe slots.
- Power supply capacity is adequate for any solution.
- OS is Windows 8.
- No brand preference.
- Money matters, but only as a tie-breaker.
My main point of confusion is that there are six-monitor cards, but their selection is limited and they're often based on older GPU's. I'm not sure if I should just go with one or get two newer GPU's.
It seems weird that many single-monitor solutions employ graphics cards with up to 4GB of video RAM, but most single-card solutions for six monitors have no more than 1GB of video RAM. A multi-card solution would provide more video RAM; would this help avoid performance issues?
Note: Previously asked in How to design a six-monitor setup?, which was closed as being too broad. Trying to keep this one focused, but please let me know if I can improve my question in any way.