Flexx Ram memory 8GB SODIMM DDR3 PC3L-12800 1600MHz 1.35v 204 pin 

Compatibility for Mac systems
Our Flexx branded in house memory modules are manufactured by our suppliers to the highest
standards in the DRAM industry, using only the highest quality branded flash memory chips (like Samsung, Hynix, Micron, etc).
They are 100% compatible with any Windows or Mac machine according to their specification. Our Flexx modules are as good as any other major branded modules but at a budget price. By dealing directly with the manufacturer, we are able to offer our modules at most competitive prices. They are all JEDEC compliant and come with a lifetime warranty.

What do I need to know when buying memory for my Mac?

Features
Energy Efficient and Eco-Friendly
Reap the benefits and savings of the best performance-to-power efficiency ratio on the market. By applying industry-leading 30nm technology, Flexx ram DDR3 uses up to 47% less power than 60nm memory. Flexx ram DDR3 is also lead-free, halogen-free and Energy Star compliant.

High Performance
Flexx ram DDR3 brings new levels of performance to notebooks, PCs and servers. Enjoy consistent delivery of 1600Mpbs data rate and clock frequencies of 400 to 800Mhz.