For those who love optimizing PC games as much as playing them, Modern Warfare 3 promises more than 500 settings to fiddle with

pcgamer.com:

Call of Duty: Modern Warfare 3 is coming on November 10, and Activision has now revealed the full PC system requirements as well as a rundown on PC-specific features and preloading info—because yes, in case there was any doubt, preloading will be available.

November 10 is the full release date, but you can get into the campaign up to a week ahead of that by pre-purchasing the game on Steam or Battle.net. If you do, you can start «campaign early access» preloading at 9 am PT/12 pm ET on November 1—early access to the campaign will begin at 10 am PT/1 pm ET on November 2.

If you opt not to pre-purchase that early, or if you're only into Modern Warfare 3 for the multiplayer and have no interest in the campaign, regular preloading will begin at 9 am PT/12 pm ET on November 8, and the full launch—campaign and multiplayer both—will kick off at 9 pm PT on November 10, or 12 am ET on November 11.

Naturally, there is a map.

The PC version of Modern Warfare 3 will give players access to more than 500 settings, which quite frankly is a lot more than I have any interest in dicking around with, but we'll take that promised flexibility—that's what PC gaming is about, after all. It will also support DLSS 3 on GeForce RTX 40-series graphics cards, and Nvidia's Reflex low-latency technology, which promises to reduce latency and deliver smoother and more responsive gameplay. (That's not exactly new—Warzone and the Modern Warfare reboot both incorporated Reflex tech back in 2020.)

As for what you'll need to play it, here are the full PC system requirements:

You can get away with a slightly lower spec if you forgo the campaign and Warzone, and play MW3 multiplayer only. The GPU and RAM requirements remain the same as the minimum