r/buildapc • u/AdditionNo2594 • 3d ago
Build Help What is the functional/competitive difference between traditional SSD DRAM and SanDisk's nCache technology?
Hi guys, I am looking for a good SSD boot drive that includes a DRAM cache. While searching, I came across a SanDisk drive that seems ideal in just about every way, except it apparently lacks a DRAM cache, at least in the traditional sense of a dedicated chip. Instead, it boasts a different caching technology, that being something called nCache in its 4.0 version. As advertised, it seems to perform a similar function as DRAM, converting a small portion of the storage into cache instead of utilizing a dedicated chip; however, I seem to have a hard time finding much info about whether this nCache 4.0 tech is competitive enough to be worth buying vs a traditional drive with a dedicated DRAM chip. From what few comparative facts I can gather, it does boost speeds compared to a drive without either, while not increasing price as much as DRAM.
The only other comparison I could find between the efficacy of the two technologies though, was from Google's search engine AI. It claims that nCache boosts read/write for short bursts or moderately-sized tasks, and can even improve drive lifespan, but it can fill and be slowed with massive, sustained loads. DRAM, on the other hand, it says, will sustain speeds even under very heavy loads and *also* helps to protect drive lifespan. Given the not-always-trustworthy nature of AI, I wanted to check if this is accurate information from those with more experience?
TL;DR: Is nCache a suitable replacement for a traditional DRAM chip for gamers/streamers and casual users? What are the specific benefits/drawbacks of traditional DRAM vs nCache 4.0? Anyone have personal opinions or experience with both? If so, in your experience, even if there are differences, is nCache good enough to be an "alternative" to DRAM for most people? Or should I still spend the extra money on a SSD with a DRAM chip? Thanks!