The Crucial CT2K32G56C46S5 is a 64GB kit (two 32GB sticks) of DDR5-5600 SO-DIMM laptop memory running at standard JEDEC timings (CL46, 1.1V). It is a popular, reliable choice for DDR5-based Framework laptops and is confirmed working by multiple community members.
The G.Skill F4-3200C22D-64GRS is a 64GB kit (two 32GB sticks) of DDR4-3200 SO-DIMM laptop memory running at standard JEDEC timings (CL22, 1.2V). It is the maximum-capacity DDR4 option for the Intel-based Framework Laptop 13 and is confirmed running at the full 3200 MT/s. The "C22" in the part number denotes the native JEDEC CL22 profile — no XMP required.
The G.Skill F5-5600S4040A32GX2-RS is a 64GB kit (two 32GB sticks) of DDR5-5600 SO-DIMM laptop memory. It uses the DDR5-5600 CL40 JEDEC profile at 1.1V — the tightest standard JEDEC timing for DDR5-5600 — so it runs at full speed on Framework laptops without XMP/EXPO. It is one of the most frequently recommended DDR5 kits in the Framework community.
The Kingston FURY Impact KF556S40IBK2-64 is a 64GB kit (two 32GB sticks) of DDR5-5600 SO-DIMM laptop memory. It uses Kingston's "Plug N Play" JEDEC profile of DDR5-5600 CL40 at 1.1V, which is the tightest standard JEDEC timing available for DDR5-5600 and runs at full speed on Framework laptops without needing XMP/EXPO.