Memory Performance by Type
PMem offers access times superior to those of any storage media. DRAM is faster, but it is considerably more costly.
The following table lists the typical access times per storage type.
Storage Type | Typical Access Times (in nanoseconds) |
---|---|
HDD | 10,000,000 ns |
SAS SSD | 100,000 ns |
NVMe | 10,000 ns |
PMem | 90-300 ns |
DRAM | 30-100 ns |
To take advantage of DRAM’s speed, the MemVerge Memory Allocation Service (MVMAS) tiers the most recently used memory to the local machine’s DRAM. See Setting DRAM Tier Memory.