I have a Dell Precision 3520 with the following specs regarding to RAM:
Slot 1 is filled (see below), slot 2 is empty.
In some sites RAM is presented to upgrade which is barely available, so I like to buy RAM from some local dealer. My questions are:
- If I buy DDR4 16 GB RAM with a clock speed of e.g. 2400 or 2667 MHz, will it decrease the speed of the already placed RAM (1200 MHz)?
- Would I benefit if I buy two 2400/2667 MHz RAMs? (as maybe 1200 MHz is the maximum that is used by this 'old' laptop? (is there a way to know the best speed to use for this laptop? or is faster 'always' better?)
- If the latency of the new RAM would be e.g. 19, would then the 'overall' latency be 19 ? or worse than 17 or 19 ?
- If I buy one new 16 GB RAM and find out my system is much faster, if I would buy another same type of the new 16 GB RAM, is that equally good as buying a 'set of 2 RAM modules' ? Or can I assume two equally RAM modules would behave like a set?
The RAM I have in mind is a Crucial CT16G4SFD824A (16 GB DDR 4 SODIMM 2400 MHz, CAS latency 17, voltage: 1.2V, ECC Type: Non-ECC or: Corsair Vengeance CMSO16GX4M1A2133C15 (16 GB, DDR4, 2133 MHz, CAS LAtency 15, 1.2V, Non-ECC)
There are more types, but just some to show as example.