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  • Realistic-looking fake Ryzen 7800X3D that don't even have CPUs inside are selling

    Karlston

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    • 1 comment
    • 237 views
    • 3 minutes

    While the used market can often offer a lot of savings compared to the new, it also usually brings with it several risks. For example, the product may not be as good as it is advertised, or there is some underlying issue the seller does not disclose. Consumer technology goods, like processors, are no exception. In the latest report of fake CPUs, a new counterfeit AMD Ryzen 7800X3D processor has surfaced that does not even have a processor inside it.

     

    The incident has been reported by YouTuber and chip overclocking guru der8auer who was informed about it by one of his subscribers from Romania. The buyer purchased the part on OLX, an online marketplace website that is popular in certain parts of the world.

     

    When they installed the chip in their PC, they noticed that the system did not attempt to boot up. Suspecting that it was a bad CPU, they tried to get readings from it with a multimeter, only to find that there was nothing at all. The supposed 7800X3D processor they had bought was not sending anything when probed.

     

    der8auer bought the chip from the duped buyer to investigate what was really going on under the hood. While counterfeit processors and GPUs are often faked by using lower SKUs that impersonate higher-end parts, the forged 7800X3D, in this case, did not have any CPU die inside at all, explaining the lack of any readings on the multimeter. It was only populated by capacitors, while both the I/O die and the CCD (core complex die) were missing.

     

    Fake Ryzen 7800X3D delidded

    Forged I/O die and CCD are actually part of the IHS itself

     

    Fake Ryzen 7800X3D delidded

    The real I/O die and CCD are missing

     

    der8auer discovered this when he opened up the processor's IHS (integrated heat spreader) and delidded the chip using a Thermal Grizzly Delid-Die-Mate to see what was inside.

     

    He also felt that this was one of the finest examples of faking something, as it was done quite professionally. der8auer also noted some giveaways that can help identify such a processor. For example, the color of the paint did not quite match the real thing, and the Z-height was also different. However, noticing these things from afar is going to be very difficult.

     

    Source and images: der8auer EN (YouTube)

     

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    Having some experience buying electronics components from a certain country... I'm not all that surprised by this.

     

    I once tried to get my hands on some GPS integrated circuits which were in short supply and quite expensive. Out of sheer curiosity, I ordered several from different suppliers from that country directly and from eBay sellers.

     

    Out of six, one was fully functional as far as I could tell (but I bet it didn't meet the finer specifications I couldn't measure) but pulling the cap off showed it to be counterfeit, and five were only partially functional fakes all with missing flash memory. They had copied the chip layout but not populated the memory section. It should be noted that those exact parts were being used extensively in DIY drone GPS navigation units and similar!

     

    I got refunded for all but one.

     

    Now I have two genuine parts I finally found from a guy in France who had a tape reel of the real things. Cost me more per piece than all the fakes together but they've been running my home-made GPS-disciplined clock and frequency reference for a few years now. I run my own stratum-1 time server from it.

    Edited by Mutton
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