HP Z600 Workstation Computer - 8 Core 16 Thread Intel Xeon up to 3.33GHz, 24GB RAM, 250GB SSD + 4TB HDD, 4 Monitor Support, USB 3.0 (Renewed) - Perfect for Video Editing, 3D Rendering & Graphic Design

Very good condition, quick delivery. That would have been enough to make me happy, except that I had a problem booting the first time (it ended up being my fault). I called their support line and they were extremely helpful, leading me through some hardware inspections/diagnostics until the problem was solved. Type A, Class 1 customer service. I later had a question about adding memory (it is, after all, a server, not really a PC), and they sent me a document that led me through the process. 'Couldn't have asked for more!The computer itself is top quality, sturdy and solid. HP offers a system performance adviser as a free download, and I highly recommend it if you want to keep track of what's going on inside the box; it provides a wealth of useful information.One thing worth noting: It is a rather old machine, and it has a proprietary power supply. Exercising an abundance of caution, I picked up a refurbished spare, just in case something goes wrong. Of course, now that I have the spare, nothing will ever go wrong with the original. Oh, well.Again, quick delivery, solid machine, unsurpassed customer service, great support (and did I mention a great price?). Five stars, and then some.