So I have a mac mini (2.6GHz i7 - 16GB Ram) that I put a samung 840 pro SSD into. I am continuously running into what seems like trim problems. I've been using the Diglloyd Tools to test. I ran disk tester a week ago on the drive bare (after cloning to second internal) and the first iteration came up at about 40MB/s, after about 4 iterations I was back up to almost 400MB/s. Now just a week later, I'm back down to 40MB/s again. I'm not sure I understand why this is happening so fast. I'm an avid photoshop user but I don't use my boot as my scratch. Just trying to figure this out. Any advice is welcome. Thanks!