Memory Subsystem

Every time I try and launch the game, I keep getting stopped with an initialization error. It keeps saying 'Unable to initialize memory subsystem. Ensure that available memory meets the minimum specification.'
I have over 50gb free. How much does this game need after installing?

I think you’re getting confused with Memory and storage space.

Oops…Yeah I did. I have 4gb of memory though…how is it not working?

OS: Windows® 7 x64-bit or Later
Processor: Intel i5-750 / AMD Phenom IIx4 945
Memory: 6 GB RAM <-----------minimum spec is 6 GB of Ram.
Graphics: AMD HD 6870/ NVIDIA GeForce GTX 460 or better, PhysX support
DirectX: Version 11

I have 8 GB of RAM and it’s giving me the same error