Review on 💾 HP EX900 250GB NVMe PCIe 3.0 x4 Internal Solid State Drive (SSD) with 3D TLC NAND - Model 2YY43AA#ABC by Julie Gomez

The HP EX900 uses a Silicon Motion SM2263XT non-DRAM NVMe controller with Host Memory Buffer (HMB) technology. The keyword here is no DRAM. Because of the speed, most SSDs write data to their internal cache (aka hard drive RAM) before actually writing it to the NAND memory chip. Drives without DRAM mean they lack a memory chip to temporarily store data. This is a cost-saving measure, so you can get this disc at a significant discount compared to the leading brand. This mambo jumbo means to you that this drive is USING YOUR SYSTEM RAM as a temporary cache. So if you buy a 500GB drive you will need an additional 500MB of RAM to run it, a 256GB drive will need an additional 256MB of RAM. It may not be obvious at first, but you will notice that Windows Explorer will start to "eat" a lot. It is accessed through Windows Explorer, so I wouldn't recommend it if you have less than 8GB of RAM. Still, it's a decent device that delivers advertised real-world read/write speeds. I decided to use it as a secondary storage device since I mount it on a PCI card. If you're looking to replace your primary C: drive, you should look for one that has an onboard DRAM chip.