Which kind of dram is better for SSDs
21 hours ago, Pratham Bhatnagar said:Which kind of dram is better in SSDs LPDDR4, DDR3, DDR4 ?
One point I forgot in my first reply that might interest you...the reason it rarely matters is because DRAM on a consumer SSD is used for metadata, like mapping/addressing, specifically to be faster than going to the copy on the NAND/flash. This is particularly true with small I/O, e.g. 4K. So therefore latency is the primary concern more than bandwidth. What you typically see is that a single drive model that comes over time with two different DRAM configurations, i.e. DDR3 and DDR4, that the true latency - this is the latency calculated by looking at effective clock rate and latencies (e.g. CAS) - tends to be around the same. The manufacturer will pick what's cheapest or available in many cases and may vary the amount of DRAM which is a different discussion. However, from the perspective of the consumer/user, the primary difference to you will be as I said above: power consumption and relatedly, thermals.
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now