Oh Surface, look how you've grown!

The Surface 4's Samsung branded SSD is considerably larger than the little whipper snapper we saw in the previous generation.

Awww, they brought us more chips. The 128 GB Samsung PM951 SSD is packing the following:

Samsung S4LN058A01-8030 PCIe 3.0 x4 NVMe flash controller

Samsung K9CHGY8S5C-CCK0 64 GB NAND flash

Samsung K4E4E324EE-SGCF 4 Gb (512 MB) DRAM

Texas Instruments TPS22966 5.5V, 6A, 16mΩ, 2-channel load switch

Silergy power management (likely)