I have a 2011 Mini Server with the base factory 4GB memory and an external LG BluRay burner so I can rip and convert my BluRays to MKV. Using OSX and MakeMKV, I consistently get good rips and can play back the resulting MKV's using VLC (or any other app that plays MKV files) just fine. ZERO stutter during playback. The same applies for MKV's that I compress down using handbrake. I decided to bootcamp a copy of Win 7 Pro I had laying around thinking that I should get better performance when using handbrake but, I'm not. Where I get around 24fps conversion in Handbrake under OSX, I only get around 19fps or lower in WIN 7(I tested this using the same base MKV under OSX and Win 7). Also, Win 7 VLC playback of MKV's is extremely choppy, both video and audio. Based on what I've seen other post, I really thought I should see increased performance using Bootcamped Win 7 due to virtulization and hyperthreading. I'd have to do a search but, I'm sure I've seen a post here where the OP said he was getting upwards of 48fps conversion using Win 7 handbrake. Unfortunately, I'm seeing much worse performance. I'm most shocked at how bad MKV play is using VLC under Windows. I'm sure that everything is set up and installed properly so..... 1. Could it be a RAM issue with WIN 7? Need 8GB? 2. Something not installed properly or overlooked? I'm pretty sure I did everything correct including BootCamp WIN drivers. 3. Can someone verify what fps they are seeing using WIN 7 and Handbrake? Basic test would be; BluRay to MKV using MakeMKV then Handbrake set to to MKV output using a constant RF of 20. 4. Any other ideas? I'm not dissatisfied with performance under OSX, I was just hoping to squeeze out more performance under Win 7 for this type of operation.