Officially, only Windows Vista, 7, 8, or 8.1 (64-bit) are supported.
A 32-bit operating system can only address a maximum of 4GB of RAM , regardless of how much physical memory is installed in your PC. FIFA 15 requires at least 4GB of usable RAM just for the game itself, leaving no room for the operating system to function.
"...in today's world, I don't see a single reason why you'd use 32-bit Windows.. if you don't have the hardware for it, you'd better..." fifa 15 windows 7 32 bit 35
—the same tech powering the PlayStation 4 and Xbox One versions. However, this leap in technology came with strict technical requirements that left many Windows 7 32-bit users on the sidelines. The 64-Bit Barrier The most critical takeaway for legacy users is that FIFA 15 officially requires a 64-bit operating system Official OS Support: Windows Vista/7/8/8.1 (64-bit only). RAM Requirement: A minimum of
As you can see, the official system requirements recommend a 64-bit version of Windows, but we're interested in running it on 32-bit. Some users have reported that FIFA 15 can run on Windows 7 32-bit, but with some tweaks and compromises. Officially, only Windows Vista, 7, 8, or 8
Turn off or reduce MSAA (Multi-Sample Anti-Aliasing) to reduce the load on the GPU. Why FIFA 15 Still Holds Up
FIFA 15 relies heavily on the physics and animation systems. On a 32-bit OS, driver overhead can be higher. Expect: The 64-Bit Barrier The most critical takeaway for
If you are eventually able to run FIFA 15, you'll be treated to one of the most significant generational leaps in the franchise's history.
systems and the reality behind small-size "35 MB" installers. Can You Still Play FIFA 15 on Windows 7 32-bit?