Those that have got their hands on the new Call of Duty early have reported that you will need about 172GB for PC and a whopping 240GB on PlayStation 5. Essentially, expect more than 200GB for MW3 Minimum System Requirements CPU: Intel Core i5-6600 or AMD Ryzen 5 1400 Video Card: NVIDIA GeForce GTX 960 / GTX 1650 or AMD Radeon RX 470 Video Memory: 2 GB RAM: 8 GB Storage space: SSD MW3 Download Size on PC If you are solely interested in the multiplayer action, you will need at least 79 GB of available space at launch for Call of Duty HQ with only the multiplayer mode *149 GB of available space required for initial download of Modern Warfare III (78 GB if COD HQ and Warzone are already installed). Content can be uninstalled to access COD HQ + MP only Competitive / 4K Ultra In the direct sequel to the record-breaking Call of Duty®: Modern Warfare® II, Captain Price and Task Force 141 face off against the ultimate threat. John Schutt Image via Activision Modern games are getting downright obnoxious with the space they take up on our consoles and PCs. Call of Duty has long been one of the worst offenders, and this year's installment is no different. So, how big is the MW3 install size? How Much Space Do You Need to Install MW3? Call of Duty Modern Warfare 3 requires 213 GB of disk space on PC. In response to the community shock, Activision Blizzard released a statement regarding the disk space. This is due to the increased amount of content available Day 1, including open world Zombies, support for item carry forward from #MW2 , as well as map files for current Call The total file size for Modern Warfare 3's campaign mode is expected to be around 50 GB (or more) for both PlayStation 4 and 5. rSBF.