I need a really good large RAM for [a PC I want to get built][1] meant to render Blender Cycles.

**Requirements:**

 - Compatibility with the [MSI X399 board][2].
 - Compatibility with the (non-OC'ed) AMD Ryzen Threadripper 1950X.
 - No more than 4 modules with a combined capacity of 32GB.
 - Price preferably 300 USD or lower

  [1]: https://hardwarerecs.stackexchange.com/q/7857/273
  [2]: https://www.amazon.com/dp/B074DHQR9N/