I can't stand the performance on the Drive on my mac mini.
Which SSD should I go with Samsung 840pro or Intel 520. I have 3 520's already and been very happy with them. But I am seeing the 840Pro getting great reviews as well.
I got its little brother the 830 (128GB) for my gaming desktop last year and it really is flying fast. Basically took my HDD and made it a internal storage. That being said you should have fun with your 840 Pro, especially in 512GB.