Call of Duty Modern Warfare 3 and Warzone Season 1 are just around the corner.

They arrive on December 6, and the update promises to bring new maps, modes, weapons, and more content.

Funko Call of Duty All Ghillied Up Pop Games Figure
Credit: Funko
VIEW PRICE: Lieutenant Simon “Ghost” Riley Funko Pop! Figure

Additionally, the seasonal prestige continues, enabling players to further level up their accounts.

Here’s a ONE Esports guide on how to install Modern Warfare 3 on PC, including details about file size and system requirements.

Step-by-step guide on how to install Modern Warfare 3 on PC

Modern Warfare 3 is available for download on Steam and Battle.net, Activision Blizzard’s official game client.

Call of Duty Modern Warfare 3 on Steam Store
Screenshot by Jeremiah Sevilla/ONE Esports

Steam

  1. Go to Store and search for Call of Duty.
  2. Add the game to your collection.
  3. Find it in Library.
  4. Click the Install button to download.
MORE CALL OF DUTY GUIDES
Best Rival 9 loadout in Modern Warfare 3 – full class setup
Complete Modern Warfare 3 missions list — all 14 missions and rewards
What is a fury kill in Modern Warfare 3? New MW3 term explained
How to fix Modern Warfare 3 Travis Rilea error code aka error code 14515
Best controller settings for Modern Warfare 3 — make sure you make these changes

Do note that you need an Activision account to play the game on Steam.

It is recommended to use High Priority under Automatic Updates.

Call of Duty Modern Warfare 3 on Battle.net
Screenshot by Jeremiah Sevilla/ONE Esports

Battle.net

  1. Select All Games.
  2. Find and select Call of Duty.
  3. Confirm the installation location on your computer.
  4. Select Install to download the game.
Funko Call of Duty All Ghillied Up Pop Games Figure
Credit: Funko
ADD TO CART: All Ghillied Up Funko Pop! Figure

Make sure to have your game settings set to auto-update to ensure the game is ready to go at launch.

On Battle.net, enable auto-update before installing the game.

If you haven’t launched Modern Warfare 3 within the last 30 days, you will need to download updates manually.

File size of Modern Warfare 3 on PC

Modern Warfare 3 weapons include new and old
Credit: Activision
PLATFORMFILE SIZE
Steam (Windows)125 GB
Battle.net (Windows)142 GB

Minimum, recommended, and competitive specifications for Modern Warfare 3 on PC

Call of Duty Modern Warfare 3 Xbox One Vault Edition on Amazon
Credit: Activision
GET YOURS TODAY: Call of Duty Modern Warfare 3 Vault Edition for Xbox Series X|S and Xbox One

These are Activision Blizzard’s minimum and recommended PC specifications to play Modern Warfare 3:

HARDWAREMINIMUMRECOMMENDEDCOMPETITIVE
Operating SystemWindows 10 64-Bit (latest update)Windows 11 64-Bit (latest update)Windows 10 64 Bit (latest update) or Windows 11 64 Bit (latest update)
CPUIntel Core i3-6100 or AMD Ryzen 3 1200 (for Multiplayer only)

Intel Core i5-6600 or AMD Ryzen 5 1400
Intel Core i7-6700K or AMD Ryzen 5 1600XIntel Core i7-8700K or AMD Ryzen 7 2700X
RAM8 GB16 GB16 GB
Hi-Rez Assets CacheUp to 32 GBUp to 32 GBUp to 64 GB
Video CardNVIDIA GeForce GTX 960 or AMD Radeon RX 470NVIDIA GeForce GTX 1080Ti/RTX 3060 or AMD Radeon RX 6600XTNVIDIA GeForce RTX 3080/RTX 4070 or AMD Radeon RX 6800XT
Video Memory2 GB8 GB10 GB

To avoid graphical issues, install the recommended video card driver versions below:

For Nvidia: GeForce Game Ready Driver 537.8 – WHQL

For AMD: AMD Radeon Series Graphics and Ryzen Chipsets 23.10.2

Follow ONE Esports on TikTok for more Call of Duty content.

READ MORE: All new Warzone perks in Season 1: Default and custom versions