When the system requirements appeared for Call of Duty: Ghosts on PC, one of the surprise minimums was the need for 6GB of RAM. Such a requirement had Call of Duty fans rushing to upgrade in time for the game’s launch so they could play it. Others were left wondering why the game required so much RAM, and it soon became apparent it didn’t.Anyone running the game on PC and monitoring the RAM use will notice it hardly ever goes above 3GB, so why did Infinity Ward insist on 6GB? That question has yet to be answered, but it now looks as though it was a mistake because the requirement has been lowered to just 4GB.A 400MB patch for the game got announced via a tweet and released late yesterday and apparently resets the minimum RAM requirement to 4GB. Unfortunately, the patch notes are not available yet, so there’s no official explanation as to why the RAM requirement has been lowered or what else the patch fixes/introduces for that matter.The good news is, feedback from gamers who have already installed the patch say that it fixes the stuttering on menus and introduces eSports rules and Broadcaster Mode. The delay to the patch notes becoming available may be due to Infinity Ward also trying to patch the PS3 and Xbox 360 versions of the game this week.Hopefully by the end of the week or early next we will have an official explanation from Infinity Ward regarding RAM requirements.