I recently bought a Mid 2011 Mac mini Server used from one of the Amazon Marketplace sellers. I took out the stock drives and added those silly Seagate SSHDs (two of them at 1TB each) and maxed out the RAM at the Apple Supported maximum of 8GB. This is my first ever Mac server and I'm primarily using it for training myself on Profile Manager, Open Directory, NetBoot, and probably one of either the Caching Service or the Software Update Service. I should add that part of the point to me having this server is to further educate myself on becoming an Apple Systems Admin with practical skills that I couldn't pick up from JUST doing the ACTC exams each year. And given that, I'd like to experiment with multiple servers. THAT being said: I was thinking of buying a second Mac mini Server and doing the same thing with the hard drives and RAM. For this server, I will probably aim for something less powerful (and designate for the less processor/RAM-speed intensive tasks) and thusly, I'm thinking one of the Core 2 Duo generations of Mac mini Server should be sufficient (again, it's not like I don't have the 2GHz Sandy Bridge i7 server for tasks that require the power). GIVEN THIS: On eBay, I'm seeing a Mid 2010 Mac mini (so, current body style [save for the non-accessible bits of these stupid new 2014 models], 2.66GHz Penryn Core 2 Duo, GeForce 320M, 8GB Apple-Supported Maximum RAM; 16GB Actual-supported RAM [according to MacTracker]) for $469, and a Late 2009 (so, last body style with the external 110W Power Brick, 2.53GHz Penryn Core 2 Duo, GeForce 9400M, 4GB Apple-Supported Maximum RAM, 8GB Actual-Supported RAM [according to MacTracker]) for $379. Now with that, I have a few questions, and accordingly, I want your opinions: 1. First and fore mostly, given those prices, which machine would you go with? 2. Are these fair asking prices? 3. I remember reading/hearing back from my days as a Mac Repair tech that there were some known issues with the GeForce 9400M that weren't as common on (or were non-existent on the 320M (though that could've been that the 9400M was used over the course of nearly two years where the 320M was used over the course of half that time). Is this true? I don't care about graphics performance seeing as the system will be headless for most of its operating lifetime under my ownership (though given that the 9400M and 320M are both the respective chipsets of their respective logic boards, reliability is a concern for me). 4. Does the Late 2009 Mac mini Server actually recognize 8GB of RAM? Seeing as AppleCare would be long over on whichever one I buy, I don't so much care about the maximum that Apple supports just as long as it doesn't fry my machine and is recognized. That being said, as is the case with the current server, I think 8GB is sufficient and I don't see a need for more than that. 5. Are there any other limitations or annoyances that I should be aware of when making this decision? Thank you all for your help and sorry the post is so long.