Appraisal Background
CPU generally refers to the central processing unit. The central processing unit (CPU), as the computing and control core of the computer system, is the final execution unit for information processing and program execution. Second-hand CPU processor products have been used, and some gold fingers are seriously oxidized. In addition, the previous usage is unknown, and this CPU is easily damaged by overclocking.
Zhongke Testing can provide electronic and electrical quality appraisal services. It can conduct appraisal work on whether there are problems with CPU-related quality, issue professional and reliable inspection reports, and assist courts and enterprises in resolving product quality disputes.
Basis for appraisal
GB/T 22186-2016 Information security technology Security technical requirements for IC card chips with central processing unit
GB/T 36630.2-2018 Information security technology Information technology product security controllable evaluation indicators Part 2: Central processing unit
Authentication case
An Internet company purchased a batch of computers, but quality problems frequently occurred during use. After investigation by technicians, they believed that there was a problem with the CPU. After the claims with the supplier were fruitless, both parties went to court, and the court entrusted our company to conduct technical research on the performance of the CPUs of these computers. The
expert team inspected and tested this batch of computer CPUs and found that the CPU serial numbers did not correspond to warranty services and were bulk products. In addition, some parts have nicks and scorch marks and have been used for a certain period of time. During the testing of
, problems such as noise and screen freezes occurred many times. In the end, the expert group concluded that the batch of computer CPUs were bulk products, and some parts were second-hand accessories, which contained serious quality defects.
