Gb != GB, those are 4GB full-width (x64) modules, making them 512MB per x8 chip, half the size of what Apple already uses in the MBP line's fully maxed out configuration.

Those are individual 32 Gb (gigabit) ICs for use on memory modules (which contain an array of such ICs).

But the CPU can't support the "LP-ness" of it.