Shulou(Shulou.com)11/24 Report--

Thanks to CTOnews.com netizens Wu Yanzu and goodfull for the clue delivery! CTOnews.com January 27, YouTuber @ Iskandar Souza and @ Paulo Gomes survey found that many mine card sellers are not honest, they will in some ways pack the mine card as a "new graphics card" into the market.

It is said that whether it is high-pressure water gun cleaning, or ultrasonic plus washing water cleaning is for PCB scale removal, but the chip part of the want to "rejuvenation is not so easy." Although some burst GPU cores can be replaced, there is no doubt that this has greatly increased labor costs. In this case, it is not easy for consumers to buy high-quality mineral cards, and now there is a "refurbished" video memory chip, which once again deepens the difficulty of discrimination.

As shown in the picture, the GPU core of some mine cards can still maintain good performance after long-term exercise, but the chip part shows obvious yellowish brown, that is, signs of darkening, discoloration or melting on the surface.

Paulo said that to identify used cards requires extremely careful testing, whether it is a missing sticker or marks scratched by a screwdriver should make you suspicious. However, even though some cards may look new (including the original warranty label, free of dust or scratches), they may not be new cards.

By far, the easiest place to find is the aging trace of the video memory and the GPU core, that is, the yellow part, but there are always some businessmen who like to play tricks, and they have even figured out a way to paint the video memory chip to make it look newer than it really is.

Fortunately, this hot paint material can be removed, so the obvious difference between the chip color and the underlying color means that it is likely to be a "refurbished card", but this way is undoubtedly testing consumers' hands-on ability. after all, you need to remove the radiator before you can check whether the card has been painted.

It is worth mentioning that the PCB with GPU core can also change color after digging for a long time, although miners can also renovate in this way, but because the cost is too high, few miners have done so yet, and most of these people only renovate the video memory.

CTOnews.com warns that the yellow marks on the video memory and GPU core may be caused by prolonged heating or re-soldering, but whatever the reason indicates that the card is not a new card. Paulo also shows you a number of cases of what GPU looks like after mining:

▲ comparison chart

▲ comparison chart

The ▲ comparison chart suggests that if consumers do not have a certain identification and hands-on ability, they are advised to buy graphics cards on the official website to avoid the problem of "getting rid of second-hand graphics cards". At least if there are problems, they can also be guaranteed by the authorities.

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