Counterfeit Intel Xeon E5 CPUs Invade Amazon

Counterfeit Intel Xeon E5 2683 V4 Closer
Counterfeit Intel Xeon E5 2683 V4 Closer

A month ago, STH reported on counterfeit NICs turning up on Amazon. We now have evidence from multiple reports from readers on the STH forums that such fakes have now extended to Intel Xeon CPUs as well. We will be showing you some of the tell-tale signs of that differentiate a fake from a genuine Intel processor in this article and hope to spread awareness so our readers do not run into problems themselves.

Counterfeit Intel Xeon E5 CPUs Background

To start, some background on the Xeon E5 product line. From its initial launch in Q1 of 2012, to the final revision, released in Q2 of 2016, the mainstream Xeon E5 line spanned four generations and two different socket revisions. The first two generations (V1 and V2) utilized socket LGA2011, while the later ones (V3 and V4) used LGA2011-3 as Intel made the switch to DDR4 memory. There was also a lower-end version using the LGA 1356 socket, however, those did not have a large market share and therefore are relatively rare. There was also a socket LGA2011-2 for the Intel Xeon E7 line. Years ago STH had an article showing the 3 Different LGA 2011 pinouts.

Three Different Intel Xeon LGA 2011 Sockets
Three Different Intel Xeon LGA 2011 Sockets

We are now seeing a flood of Intel Xeon E5 V3 processors showing up on the secondary market as many companies are upgrading and sending their old hardware to recyclers. The previous Xeon E5 V1 and V2 generations have been readily available for some time now.

Intel Xeon E5 V2
Intel Xeon E5 V2

Certain models such as the Xeon E5-2670 V1 have been very popular for those wanting to build a server or workstation on a budget as they offered some of the best value for performance.

Intel changed the heat spreader design on the V3 and V4 revisions, making it one of the easiest ways to identify which generation a processor might be, even with no other markings present. It is also worth noting that on the higher core count models of the V2 and V3 generations, the PCB itself is wider, apart from the corners.

Intel Xeon E5-2600 V4 CPU
Intel Xeon E5-2600 V4 CPU

Intel made both socket 2011 and 2011-3 visually similar, but mechanically and electrically incompatible. The platforms are keyed differently and have different electrical pinouts. You can risk damaging both the processor and motherboard by incorrectly combining a CPU with the wrong motherboard generation.

Counterfeit Intel Xeon E5 CPUs on Amazon Marketplace

There have been two reports of counterfeit processors received from Amazon’s marketplace so far from readers on the STH forums. The first report was a Xeon E5-2640 V4 that was purchased from Amazon Warehouse, which handles returned items sold by Amazon.

Counterfeit Intel Xeon E5 2640 V4
Counterfeit Intel Xeon E5 2640 V4

They arrived in retail boxes, in a condition that one might expect from an open-box product.

Counterfeit Intel Xeon E5 2640 V4 Boxes
Counterfeit Intel Xeon E5 2640 V4 Boxes

While the serial numbers did not match the box, the dead giveaway is the wrong heat spreader. It is apparent as shown in the montage above that these processors, while having the correct markings, are either from the V1 or V2 generation. An unsuspecting buyer might soon find their hardware damaged if they were to put this in a 2011-3 system.

Counterfeit Intel Xeon E5 2640 V4s
Counterfeit Intel Xeon E5 2640 V4s

The second report was a Xeon E5-2683 V4 purchased off, which is an Amazon subsidiary and is known for selling a limited number of products at discounted prices. Inventory is often fulfilled by Amazon itself, as was the case here.

The processors themselves were received in bulk packaging, inside anti-static bubble warp with generic labeling. While this is not unusual when buying components from a hardware recycler, they were advertised as brand new. Intel does not ship processors in such a manner and is quite particular about branding.

Counterfeit Intel Xeon E5 2683 V4
Counterfeit Intel Xeon E5 2683 V4

Just like the first fake, it is quite apparent that this “Intel Xeon E5-2683 V4” does not have the correct heat spreader and is clearly a V3 generation processor. The markings on the heat spreader are ones that one would expect on a V4 generation processor, however, some careless errors can be spotted, such as the “8” in the model number being inverted.

Counterfeit Intel Xeon E5 2683 V4 Closer
Counterfeit Intel Xeon E5 2683 V4 Closer


The ease of creating these kinds of counterfeits has been augmented by advancements in laser engraving. As a CPU only requires a very small working area, one would not require a large freestanding unit. DIY models, which are similar to hobbyist 3D printers in design, can be acquired for as little as $350 from AliExpress and larger assembled ones are still relatively accessible in the $2000 range.

The laser engraving is otherwise of reasonable quality. For someone who does not work with these processors regularly, they may not realize these CPUs have been re-marked until it is too late. It would be difficult to fool anyone that deals with this sort of hardware on a regular basis. To someone who rarely has hands-on with the parts, it would be very hard to tell, potentially risking damage to their server.

Final Words

Counterfeits are becoming more prevalent and with the ease at which fakes like these are comingled in Amazon’s inventory, buyers need to be especially prudent about any purchases they make. Unlike the fake Intel NICs that STH reported on recently, these are high-value items and do not provide the functionality one might expect from a genuine product. In fact, they can do worse and cause irreparable mechanical damage to servers. Given that these were not isolated incidents, we might find that this sort of fraud only increases in prevalence and extends to more than CPU and NICs.

If you are in the market for an Intel Xeon processor, it’s in your best interest to order from an authorized retailer or reputable hardware recycler. Please post on the STH forums if you come across any fakes like this yourself so that others can be aware of what to look for.


  1. If only these scammers would put the same effort in genuine business they might make something of their life, what a waste of time and resources for everyone.

  2. Regarding the Amazon warehouse one, its not a counterfeit, its just someone who defrauded Amazon, and their warehouse staff unsurprisingly being incapable of telling the difference.

  3. @Muh Fugen How is it not counterfeit? The only other option is real, so if it’s not counterfeit, you’re saying it’s real. How is someone defrauding amazon using a real CPU?

    The definition of a counterfeit is “a fraudulent imitation of something else; a forgery.” Note that nowhere in that definition is anything to do with the circumstances of how it came to be sold. Who did what with amazon or at what warehouse or anything else is totally irrelevant. Nor does it have any qualifiers about counterfeits can’t be based on something similar and real. Just because they used a real CPU as part of the forgery doesn’t make it any less a forgery and any less counterfeit. All that matters is if that CPU is labeled fraudulently as something it isn’t.

    In both cases, older CPUs from 2-3 generations ago have been relabeled (with new laser etching on their heat spreader) as being a much newer and more valuable generation. A Xeon E5-2680 v1 sells for $150 now. A Xeon E5-2680 v4 sells for $1700. And you’re trying to say relabeling one as the other isn’t a counterfeit? Of course it is. It might be a real intel CPU, but it’s a counterfeit version of the CPU it claims to be.

  4. …had a much longer comment typed up but the page refreshed for some reason. So shorter version – this likely wasn’t a cheap/DIY CO2 laser, as those usually can’t etch metals. You can maybe use a dye or similar which basically gets melted on, but I don’t think that’d give the quality you see in the pictures.

    Most likely that was done on a fiber laser (really cool tech., look it up on Wikipedia), which can definitely etch many metals. I haven’t been following the DIY scene for lasers recently, but I don’t think fiber lasers are popular in that realm; eBay does have some cheap Chinese versions for $3~$5k, so that sets a rough estimate on how much the scammers have invested (though if they centralize it and sell enough of them, could really be a drop in the bucket compared to their profits…).

    I’ve got access to a pretty nice fiber laser, maybe I’ll bring in an old CPU to test out the quality…

  5. Are 2 instances of a counterfeit product at the level of “invasion” ?

    Sure, this needs to be discussed and addressed, but that term just screams FUD.

  6. Wow, as the saying goes: “You don’t counterfeit a $1 dollar bill”

    These scammers go for the big moolah. I wonder what Amazon is doing to crack down on this. I was thinking of going to X11, but I will probably just stay on X9 because of this for now.

    This is a good article, with good pics, so people can hopefully recognize a shady purchase.

  7. The inverted 8 doesn’t sound like a careless error. That would be very intentional and slightly difficult to print. I wonder why the counterfeiters did that.

  8. Agreed that I wish the scammers would just put their efforts towards a legit business enterprise. Unfortunately, in Asia this sort of enterprise is considered ‘smart’ and ‘cunning’. >:|

    Amazon is doing nothing to curb this behavior. It still happens all over the place and in all sorts of generations. I just found out that the ‘used, tested’ pair of x5460 I got for my dl380 aren’t genuine. Really? Looks like they were even doing it back in the day and that junk is still making the rounds…

    It would be nice for Intel to send some cease and desist letters, but they don’t even bother. When I got my fake boxed nics from a seller on ebay, Intel only would state that they’re not genuine–that’s it. No ‘where did you get them from’, ‘who’s selling these’, etc. And while the seller refunded quickly, they had sold well over 1100 nics at the time that I got them.

    As always, buyer beware, and if it’s too good to be true, it probably is.


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