Hydropothecary announces expansion plans to increase production capacity to 108,000 kilograms per year of dried cannabis
4 gb of ram is so much. 8 GB is definitely overkill unless you are planning on doing something involving video. With ableton you would actually be fine with 1 or 2 gb, 4 gb is plenty.
Modules today are typically 2, 4 and 8 GB. Third is how much total RAM is supported by the motherboard, or rather the chipset on the motherboard. The operating system isn't a limitation, you can perfectly well have 128 GB of RAM and then install a 32-bit operating system on the computer.