So, what's my architecture? Is it 64-bit ALONE or BOTH 32-bit and 64-bit?
Thanks for any clarification!
Your architecture is which one you decide you want to install. Currently you are running 64bit. A 32 bit operating system will only allow you to use 4 GB of memory if you have more installed. The BOTH option in the Media Creation Tool only means that both 32 bit and 64 bit versions of Windows 10 will be on the USB. During install, if you download both, you get to choose which one to install.
Computer Type PC/Desktop System Manufacturer/Model Number Built My Own OS Windows 10 Pro 64-Bit CPU Intel Core i7-5820k Motherboard Asus X99-Pro USB 3.1 Memory 16 GB Adata DDR4 SDRAM Graphics Card EVGA Geforce GTX 980 Monitor(s) Displays Dell P2415Q Screen Resolution 3840x2160
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