The file size of bf4 is approximately 2.5 MB.
The file size of bf4 is approximately 2.5 MB.
It really comes down to the type of files and how they're stored. Games with mostly large files that don’t need frequent I/O will load similarly regardless, but those with many scattered files on an SSD will benefit from it. For games that use thousands of files spread across the folder, an SSD would make a big difference. I’d recommend putting it on an HDD if you rarely play that game, but if you spend a year or more on your SSD, it won’t matter much. High-end SSDs are built to last for years, and flash memory holds up well over time.
What's going on? You mentioned your BF4 file size was 5.5 GB, which he pointed out was the Beta release, not the complete version. His comment confirms it, and the screenshot there shows you have the Beta installed. (See how the folder is named "Battlefield 4 Beta"). The full version is around 24 GB.
BF4 Beta features only the Core elements of the Frostbite 3 Engine (within its 64 Bits version) and all Shanghai Map assets to enable operation, without any advanced features or anything resembling the completed game.