I have a 2009 2.26GHz mbp with 160g HD and 8mg of ram. Am I better off just replacing the HD with a Samsung SSD 840 none pro 250G or will i get better performance with the 256g pro? The difference is about $80.00.
You'd be more than fine with the regular 840. The average consumer doesn't need the Pro version. I have the regular and it's great.
But will my mbp see a difference in the pro?