There is no difference in specifications between the "GX" and "GA" model numbers. DDR5 R-DIMM memory equipment models with "GE" are designed for 8-channel platforms, and will not be compatible with 4-channel platforms. DDR5 R-DIMM memory package fashions with "GQ" are designed for 4-channel platforms, and is probably not appropriate with 8-channel platforms. DDR5 U-DIMM Memory Wave package models mustn't include "GE" or "GQ" in the model numbers. The primary two digits correspond to tCL