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How for I check to see what the manufacturer is for my rMBP SSD ??

If you open up System Information (Apple->About this Mac->More Info->System Report->Serial-ATA

You will see a drop down tree, it should be under the first drop down. Probably has a bunch of letters and numbers. Copy and paste that into Google to find out!
 
All rMBPs (13" and 15") use the Samsung 830 Blade SSD. No other models are used in the rMBPs.
 
So found out something interesting today....Apple is now using a Marvell based SanDisk SSD Blade in the rMBP as well as the Samsung 830.
 
So found out something interesting today....Apple is now using a Marvell based SanDisk SSD Blade in the rMBP as well as the Samsung 830.

No surprise. I hear that relations between Apple and Samsung aren't so good right now.
 
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