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Sabrent Rocket Q4 NVMe PCIe 4.0 M.2 2280 2TB SSD Review

Storage/SSD by stefan @ 2022-02-22

The Sabrent Rocket Q4 2TB drive performs well for a QLC drive, a type of NAND flash mainly user with entry-level and mainstream SSD offerings. The Phison PS5016-E16 controller is making a great pair with Micron’s 96-layer QLC, resulting in it trading punches with the previous mainstream PCIe 4.0 drives we have previously tested. The drive could sustain high performance for quite a bit, but the behavior is quite different versus TLC NAND when SLC cache is exhausted, resulting quite low writes between 50 and 150MB/s, depending on the current cache state.

A Closer Look Part III

A closer look at the PCB does reveal a central controller, a DRAM module for caching but also two NAND ICs:

The H5AN8G8NCJ DRAM from SK Hynix does offer 1GB of DDR4 2666MHz for storing the mapping tables:

Next, we will note the Rocket 4.0 PH-SBT-RKT-401 controller, which is a rebranded Phison PS5016-E16, one of the first PCIe 4.0 controllers of its kind. It comes with 8 channels and features two cores with CoXProcessor:

Next, we did find two IA7HG66AWA Micron 96-layer QLC NAND flash, each holding 512GB of storage:

On the back side we will find two more NAND ICs and a secondary DRAM cache chip of the same type, for a total cache of 2GB:

The drive looks great when installed into the system:

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