Generally it does, but not always. Having more DRAM can improve performance especially if using the iGPU rather than a discrete Graphics card as it allows more DRAM for the iGPU and the system proper. More can down on the use of the page file (the memory writing back and forth to the hard drive due to a lack of DRAM. Can increase depending on the apps or games you have, if they are memory intensive or use large data sets.