Hello !!! I purchased a used AMD A10-7800 processor. AMD A10-7800 is written on the chip itself, but after installing the operating system, AMD A10-7890K is written in the computer properties. It turns out that I got a stronger processor in terms of parameters. But why does the marking on the processor die itself for FM2 + not match? Although in BIOS, Windows, CPU-Z, AIDA64 does not write A10-7800, but A10-7890K?
From images i've seen on the web, seems the AD789k.... depicts the model #.
The name A10-7800 SERIES is just stating the Processor series but the Part number is for a A10 7890K Processor -AD789KXDI44JC.
First you have no AMD Warranty since it is used plus being a OEM Processor and not a Retail processor.
From CPU World: