Hoyao

Hi, I plan to get 64G memory for my PC. I found these two options: CMK64GX4M4B3200C16 1pc vs CMK32GX4M2B3200C16 2pc both can be 64G, and I dont see any difference in the spec. however, in most sites the 32G kit x 2 is cheaper than 64G kit x1 is there any difference in two model? are they actually exact the same ram x 4 in total? Thanks