Mixing up Ram details is common. Let me clarify what you need.
Mixing up Ram details is common. Let me clarify what you need.
They are identical, both Unbuffered DIMMs. The extra letter only identifies it as Unbuffered, which isn't needed because all without that letter are also Unbuffered.
12800 equals 1600MHz. The timing details don’t include U, R, or L; those terms apply to registered, unregistered, and low-voltage configurations (1.5V is typical for DDR3, while DDR3L uses 1.35V).