Re: Mass Effect Andromeda minimum system requirements
I think it would be very unlikely for them to make the game Windows 10 exclusive, as it would severely limit their market. According to the January 2017 Steam Hardware survey, only 51% of PC gamers are using Windows 10... and 31% of PC gamers are still using Windows 7 64bit.
So I'd say it's pretty safe to assume the game will be compatible with Windows 7 x64bit 🙂
Your RAM looks good, so I'd say the most important factors will be the processor and video card requirements.
Also in my experience, previous Mass Effect games were very backward compatible. From what I recall, I was able to run Mass Effect 3 (and competitively playing Multiplayer) at 30 FPS framerate on low settings, on my laptop that was almost 5 years old at the time (running Windows 7 x64, Geforce M 8600 GT, and 4GB RAM).
If I were you I would still wait to pre-order until they post the minimum requirements, but I'd say it'll likely be Win 7 x64 compatible.