Due to consolidation of semiconductor fabs and NAND memory vendors in the last few years, Apple is tied to Samsung as one of its key DRAM and NAND memory supplier.
iPhone 5s Teardown use "SK Hynix H2JTDG8UD3MBR 128 Gb (16 GB) NAND Flash"
However MacBook Pro 15" Retina Display Late 2013 Teardown
Samsung K4P4G324EB-FGC2 512 MB Mobile DRAM
Samsung S4LNO53X01-8030 SSD Controller
Samsung K9HFGY8S5C 32 GB NAND Flash Modules (8 chips for 256 GB total)
The volume of smart phone is much larger than that of MacBook, however, MacBook use 8 NAND chips while the cell phone uses one.
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