This works in the 2011 MBP's. Requires a $10 rebate.
newegg.com offers the Corsair 8GB (2x4GB) PC3-10666 DDR3-1333 SO-DIMM 204-Pin Dual Channel Notebook Memory Kit, model no. CMSO8GX3M2A1333C9, for $82.99. This $10 mail-in rebate cuts it to $72.99 with free shipping. That's the lowest total price we could find by $10. This RAM features 9-9-9-24 timings. Rebate ends April 27.
Model Number: CMSO8GX3M2A1333C9
http://dealnews.com/Corsair-8-GB-DD...for-73-after-rebate-free-shipping/455518.html
newegg.com offers the Corsair 8GB (2x4GB) PC3-10666 DDR3-1333 SO-DIMM 204-Pin Dual Channel Notebook Memory Kit, model no. CMSO8GX3M2A1333C9, for $82.99. This $10 mail-in rebate cuts it to $72.99 with free shipping. That's the lowest total price we could find by $10. This RAM features 9-9-9-24 timings. Rebate ends April 27.
Model Number: CMSO8GX3M2A1333C9
http://dealnews.com/Corsair-8-GB-DD...for-73-after-rebate-free-shipping/455518.html