I have two PC4-19200 modules (4Gb each) in my laptop. Both modules are by Hynix (HMA851S6AFR6N-UH) and have a CAS latency of 17.
I want to buy a single Kingston module (KVR26S19D8/16, PC4-21300) but its indicated CAS latency is 19.
Will the Kingston module be compatible with the Hynix module, making up to a total of 20Gb, or will I have to remove both Hynix modules due to imcompatibility?
Here's my current memory config from CPU-Z (the second Hynix module has the same characteristics):
