1.Production batch number of CPU:

Authentic: The characters are carved by special craft, with black fonts and slight dents. The strokes of Chinese characters cannot be done by metal objects (such as keys). Counterfeits: Some counterfeits will also be destroyed to polish off the clock code. Generally, it is printed with black paint, without dents, and can be scraped off with metal objects. Some forgeries won't tamper with this code.

2.CPU clock:

The printing process is the same as above. Unpolished CPU tiles are dark gray with a little dark green. Counterfeiting: Because the code after the remark must be changed, this is the key point of polishing. All polished CPU tiles are blue and white with traces of polishing. From the side, the thickness of the edge of the tile is uneven (some of them are thinner, and the thickness is only about a quarter of a millimeter, which needs to be carefully identified). The words printed after polishing are generally black paint.

3. Kernel number:

4. Package number

5. Aluminum cover

6.CPU ID code:

Intel and AMD CPU have only one ID code, which is a chaotic square pattern. Due to the etching process, every point in the pattern is clearly visible and the pattern is regular. False: after grinding or re-stamping, the pattern is unrecognizable, and some points are mixed together, making it difficult to distinguish.

7. Voltage identification:

8. Mark of the clock:

Authentic: clock marks are the same as other printed words, and the font is clear. Counterfeiting: Some K6-2 only polish this part of the numbers, so there are polishing marks and a sense of oppression here. Some CPU poured the original number with metal tin, and then engraved the new number again. This newly engraved font is slightly different from the original font, with blurred strokes, and the color of metallic tin is obviously brighter than that of aluminum.

9.Windows logo

All those who have passed the Windows certification have Windows logo, and the window pattern and Microsoft certification are clearly distinguishable. Fake: the window pattern is blurred, the strokes are mixed, and the words Microsoft and Windows, especially the small font, are blurred and illegible.

10. License plate

Authentic: All products are certified and registered by the Commodity Inspection Bureau.

1 1. The square on the back of the CPU.

12. There are dents on both sides of the aluminum cover.

Authentic: the aluminum cover is cut from aluminum ingots, and there will be four dimly visible indentations on both sides when installing. False: if the aluminum cover is replaced later, because it is injection molded, there are no these two indentations on the side.

13. Adhesive for aluminum cover

Authentic: The color of the glue is milky white, slightly transparent, only the four corners of the aluminum cover have glue, the glue points are regular and round, and the aluminum cover is parallel to the tiles. Fake products: if the aluminum cover is polished and then glued, the glue color is yellow or bluish white, and the glue point is irregular. Even some aluminum covers bonded by CPU are not parallel to the tiles, with one side high and one side low (the difference is very subtle, and some people have tried to measure them with a micrometer).

14. Sides of tiles

Authentic: uniform color, dark gray with dark green, uniform thickness everywhere. Counterfeit products: Due to polishing, some parts are gray and rough. Because the original pattern was polished off, the thickness of the four corners was inconsistent.

The identification methods of different CPU products are slightly different, but some methods are common to many products. ...

I hope I can help you. I found it online, too.