3 ms·
This is the point where I would pay a bit more for the DRAM cache.
by haunter 4y ago
This is the point where I would pay a bit more for the DRAM cache.
- wtallis 4y agoI think the DRAM issue is mostly a red herring. For a 120GB SSD, the SRAM on the controller will be able to hold a significant fraction of the logical to physical address mapping table. The bigger problem is that these tiny drives only have one or two NAND dies, so any operation that causes a block erase will tie up a quarter of the capacity for hundreds of milliseconds.
- louwrentius 4y agoThe control drive, the Crucial MX500 1TB does have DRAM but I'm not sure it helps much.
- wtallis 4y agoA DRAM cache generally doesn't matter for sequential transfers. A DRAM cache will most noticeably help with random reads over the whole drive (random reads from a small range of the drive can be handled well with just a few MB of SRAM on the controller).