群联 PNY CS2150 M.2 NVMe SSD 评测 – 速度超群

“The PNY CS2150 is an M.2 2280 form factor solid state drive, supporting PCIe 5.0 x4, and that carries with it 4.0 and 3.0 backwards compatibility.  The controller is a tried and true Phison controller (PS5031-E31T), but without a DRAM cache.  Instead it utilizes 64MB of Host Memory Buffer DRAM, supplementing with system memory when swap memory is needed.  HMB has come a long way, and we see far less falloff in speed than we have in the past, often finding parity with more expensive devices that have onboard DRAM cache.  Instead, PNY has approximated a DRAM cache with a portion of the drive’s capacity.  It does this with something called “SLC” NAND flash – a 218-layer buffer that operates as a single-layer cell (that’s what SLC stands for), acting as a temporary buffer for faster writes.  It’s not DRAM, but it does allow for some middle ground without the additional cost.  It also has the knock-on effect of extending the drive’s life as it’s not being “thrashed” with bursty writes.  It’s a solid advancement, and I like PNY’s approach here”- gamingtrend.com

来源： gamingtrend.com