both using same nand and same factory output..
not much different

kingston buy Nand from Toshiba for thier SSD product.
WD joint venture with Toshiba and share the Nand output from Toshiba Fab.
thus both product is relatively same nand.
the only different it the DRAM and Nand Controller.
if both has DRAM, then not much different in term of performance.

the other brand using toshiba brand is Plextor (LiteOn), Adata, Apacer and Phison which i know aware of.
lately Samsung also start to buy Nand from Toshiba even though they hv own nand factory.

Intel SSD is using Micron Nand.

This post has been edited by stevenlee: Jan 12 2019, 06:59 PM