Here is how to RMA an Intel CPU.The Latest Tech News, Delivered to Your Inbox. ... You’ll find a partial ATPO on the side of the CPU, and a 2D matrix that you’ll need to decode to obtain the ...

Apparently, the liquid metal had corroded the processor's integrated heat spreader (IHS), removing the chip's markings, including the processor model, batch number (FPO), and 2D Matrix (ATPO).

Intel has explicitly stated for years that using liquid metal thermal interface materials (LMTIM) can void a CPU's warranty coverage. AMD has similar policies in place too.

If your Intel CPU is acting up, rest easy — it’s not just you. ... You’ll find a partial ATPO on the side of the CPU, and a 2D matrix that you’ll need to decode to obtain the full ATPO.