The method to check the CPU production date is as follows;

Check the hardware

INTEL platform CPU

As shown in the figure INTEL CORE series I3-3220CPU

S-Spec code is SR0RG? Main frequency is 3.30GHZ

Origin MALAY Malaysia

The last L209C612? L means Malaysia? 2 means year 12 and 09 means ninth C means step number, 612 means batch number

AMD platform CPU

As shown in the picture: Model A8-5600

AD560KW0A44HJ ? Indicates the model is A8 5600K 4-core

GA 1203PGT? Produced in the third week of 2012

Intel: Unique S-Spec encoding

Intel processors have the processor model printed on the top cover , main frequency, and special S-Spec coding. The model number and main frequency are very easy to identify. The picture below is a Core i3 3220 processor. I will use this as an example to explain to you.

On the second line of the top cover code, the main mark is the processor model. Among them, Intel and Core indicate that the manufacturer is Intel and the product series is Core series. The i3-3220 at the back indicates that the processor model is Core i3 3220. The TM logo and other information are registered trademarks.

The third line of the top cover code mainly identifies the processor frequency. 3.30GHz indicates that the default main frequency of this Core i3 3220 processor is 3.3GHz. The combination of citations and numbers in front of 3.30GHz is SR0RG, which is the S-Spec encoding. The first function of S-Spec encoding is to query the processor's main frequency, cache, front-side bus and other information through the network. And most importantly, when purchasing a boxed processor, the CPU box sticker identifies the S-Spec code. Only the two codes are exactly the same, which means that the processor you buy is not a fake.

AMD article: Complex OPN coding

AMD processor top cover coding uses another set of identification methods, using OPN codes to reflect processor specifications and other information. The first line of the top cover is mainly used to represent the CPU product series. For example, the A8 5600K processor below has AMD A8-5600 Series marked on the first line of its top cover, which means that the processor belongs to the AMD A8-5600 series.

AMD processor top cover coding uses another set of identification methods, using OPN codes to reflect processor specifications and other information. The first line of the top cover is mainly used to represent the CPU product series. For example, the A8 5600K processor below has AMD A8-5600 Series marked on the first line of its top cover, which means that the processor belongs to the AMD A8-5600 series.

In the third line of coding, its main purpose is to mark the production cycle of the processor. The first thing to mention here is that AMD and Intel use cycle notation when producing processors, that is, production in XX year and XX week, instead of using date notation. The third line of the processor we saw is coded as "GA 1203PGT", which means that this processor was produced in the third week of 2012.