I noticed that no thread for the Crucial M4 has been made so here it is. Share with us your experience with this very reasonably priced Crucial SSD. =============================== A request! Kindly post the following info 1) Screen grab of BlackMagic Design's Disk Speed Test of your original HDD (before) and Crucial M4 SSD (after) 2) Hardware overview from "System Information" namely - Screen Size and Model Year - Model Identifier - Processor Name - Processor Speed - Memory - Bus Speed - Serial-ATA's Link Speed & Negotiated Link Speed - TRIM: On/Off - OS X version 4) Info on the Crucial M4 SSD. - Capacity - Disk bay installed: Main or Superdrive bay - Firmware version (this is rather important as some firmware really screws up the SSD) 3) Other notable modifications like RAID 0, battery life (with HDD and with SSD) etc.