I use these myself and they're great little overclocking sticks with extremely tight timings due to being Samsung B Die.
Perfect for anyone using Ryzen and wanting to squeeze more performance out of their computer, but double check your motherboard compatibility.
Also make sure you're getting F4-3600C16D-16GVK, sometimes shops get them confused with the F4-3600C16D-16GVKC part which are NOT B Die.
Product details and price history: https://au.pcpartpicker.com/product/gJM323/gskill-memory-f43…
B die is way over rated.