I bought mine direct from PC Server and Parts Certified Refurbished website. They've got options to customize and even with a hard drive and operating system (which this listing doesn't have) price wise you can come in at close to what this listing is asking for - and they ship for free.Not only that. They package with care. I had trouble getting it out of the box, such care was taken in packing it!Now. I'm no slouch when it comes to installing things into computers and I'd been eyeing this one for a fair bit, and had nearly hit the button to buy it without the HD/OS installed, because all that RAM looked beautiful. But I'm going to be honest. I'm glad I didn't. I'm glad I went to the source and had them install the HD and OS for me. Because you know, I did decide to cheap out a little - I only had them put in one HD (a 1 tb SSD which holds Windows and my other programs files and which I'm trying to keep clear otherwise) and decided I could upgrade and add a second later.Let me tell you. Trick it out and let them do that for you. Because these are slightly older machines. The HD's so far I've tried to put in? Windows isn't reading them. Oh, putting them in is a BREEZE in this machine. I think it's a weird compatibility issue. I'll stick to externals. For the record, I have now upgraded the USB situation and thrown in a pci-e card with some more usb 3.0 slots I had in my old desktop - that works like a champ.Add all the ram you want from the get go. I went with 96 GB, and it's blazing fast. But a part of me does regret not going whole hog for the 128 max they'd have installed. You can add more ram to this beauty, but if you look closely at pictures others have posted you'll note that it'll be a mildly complicated process to get to where the RAM goes. Also, this doesn't take your standard DDR-3. You'll want server quality ram.In the end, I can't say enough about the seller. PC Server and Parts Certified Refurbished did a solid. I ordered this workstation with Windows 10 home version - that's what I paid for - and when it arrived, I discovered they'd thrown in Win 10 pro, which was a nice little bonus. The machine was clean. A very small amount of dust likely from my unpacking. They also emailed early on to check on me, and while I haven't really replied, mostly because I wanted to put the machine through some paces first and let it's dust settle so to speak, I'm confident I'll be happy with this beauty for some time.Today I played a PS5 level graphics game on it. That says something.Also to note. When I ordered from their website, you can select your processors. I went a step above the one listed in this listing. What can I say? I like speed. They have some higher ones above that, but I also have to be budget concious.I'll say this though. If and when I'm ready for my next computer, I know where I'm going. Also, when I'm ready to hook my teenager up with the rig she wants, that's where I'm building hers.