Hello, after several years of being a careful reader of MacRumors forums, where I learned everything I know about Apple world, at last I decided to participate. I propose a topic in the hope that it may also be of interest to other Mac users. I work with video. So far I have worked with a MacBook Pro 17" mid-2009: - Processor: 2.8 GHz Intel Core 2 Duo - Memory: 4 GB DDR3 1067 MHz - Graphic card: NVIDIA GeForce 9400M 256MB - Software: Mac OX X Lion 10.7.5 (11G63) - 1 MiniDisplay port for external monitor - 3 USB 2 - 1 FireWire 800 ... Great machine... six years ago. This computer was connected to an external monitor Apple Cinema Display 24" through a MiniDisplay port and USB 2. I've been very happy with this configuration for a long time, but after six years of hard work the monitor has stopped working. My most heartfelt tribute. Rest in peace. And here begins my doubts. Although this is not something to solve tomorrow, the truth is that my work is increasingly geared towards 4K video streams. And I say that is not urgent because, at least until now, the MacBook Pro (mid 2009) has no problem working with images (1920 x 1080) ProRes 422. Of course, they render times are sometimes quite long. My idea is to upgrade equipment and buy a Mac Pro or iMac 5K Retina with its highest setting. However, I think that, at least in my case, is not a good time to do so: - future updates of the Mac Pro and iMac in 2015 or 2016 - overheating problems in the iMac 5K Retina (at least in the configuration that I like) - the arrival of El Capitan - software not yet adapted to these resolutions My solution (perhaps an impossible madness) would buy a high-end monitor 4K or 5K (or less resolution) that can connect to my MacBook Pro 17" (mid 2009), down the resolution, and thus work to take the appropriate decision to purchase (2015-2016). The idea is that the monitor has Thunderbolt connections so it can be used as a second monitor if I buy an iMac 5K Retina or as a first (or second) monitor if I decide on a Mac Pro. I try to be as ambitious as possible with the resolution of this monitor to ensure that the work is nice when you are working with another monitor Retina 5K or similar. It would be like a temporary solution for a few months until it reaches a final decision. These are my questions: - Do you think this is possible or seek another solution? - If so, how I can do? - What monitors can suggest? - Do you know if it really works? Are you tested? - Are you think of another solution to not go blind and not throwing money? MUCH appreciate your comments. A greeting.