While your GPU could get you at least 40fps (Assuming Black Flag) those 4GB of RAM will cause constant FPS drops everytime your system uses the virtual memory (usually AC4:BF uses around 6GB of RAM).
While your GPU could get you at least 40fps (Assuming Black Flag) those 4GB of RAM will cause constant FPS drops everytime your system uses the virtual memory (usually AC4:BF uses around 6GB of RAM).