Instead of a box, the P300 comes packaged in a cardboard blister pack. The packaging advertises some of the drive's key features including its capacity, PCIe Gen3x4 interface and maximum read speed.
The P300 uses the 2280 form factor for M.2 (NGFF) SSDs. It measures 22 x 80 x 3.8 mm and tips the scales at a mere 9g. The drive also has an "M key" edge connector which provides PCIe SSDs with up to 4x lanes of bandwidth.
In addition to having a blue PCB, the US version of the P300 uses Phison's PS5013-E13T controller chip. Designed to provide an enhanced user experience at a competitive cost, this DRAM-less, PCIe Gen 3 x4 SSD controller offers support for 3D TLC/QLC NAND flash and features end-to-end data path protection, thermal throttling, SmartECC technology and a low-density parity-check (LDPC) ECC algorithm for improved drive reliability. The PS5013-E13T also supports APST, ASPM, and L1.2 power saving modes to maximize notebook battery life along with the Secure Erase command to sanitize all user data and restore factory settings.
For the US version of the 512GB P300, Patriot used KIOXIA's 96-layer BiCS 4 3D NAND flash. Looking at the pictures above, you can see that there are four 128GB NAND flash packages on the top of the PCB. Also take note that there is no DRAM cache chip. The P300's PS5013-E13T controller takes full advantage of NVMe's Host Memory Buffer feature by using a small portion of the computer's memory to cache the mapping tables.