Same RAM modules (dual channel) with only capacity variation
Same RAM modules (dual channel) with only capacity variation
There are subtle distinctions beyond total storage. The key lies in how the memory is organized and accessed. Using identical RAM sticks ensures consistent performance and reliability, while mixing different capacities might affect stability or cause bottlenecks. The arrangement of data paths and timing can also vary, even if specs appear similar.
Varied capacity across channels causes performance drops when one runs out of memory. Higher frequencies add more demand. I don’t recall seeing a 2GB DDR3 1600 model, those typically max out around 1333.
When your board lacks flex mode support, you operate in single channel, resulting in reduced memory bandwidth by half. If flex mode is available, only part of your RAM will function in dual channel while the remainder stays in single channel.