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Why does the GPU-Z show that my graphics card is fake?

Ryan Liu

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I bought a used NVIDIA Quadro K4000 for video editing.
But the GPU-Z said this Graphics card is fake.
Can someone help me to know why the GPU-Z check it is a fake K4000? Or How can I find out the real model of this graphics card?
BTW driver is ok and all display ports is ok.
K4000.gifsensors.gifadvanced.gif
 
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The easiest way would be to physically inspect the video card. Taking pictures of the back of the PCB, or removing the heat sink and actually taking a picture of the GPU diode. Faking Software is more common than printing legitimate looking stickers & chip markings, as the chip is lazer etched
 

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Take pictures of the heatsink, port layout, white stickers on the back of the board, taking heatsink off, getting a clear picture of you gpu die, the ram chips around it and the text info off of them, post it all here.

Thanks @jboydgolfer
 
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I bought a used NVIDIA Quadro K4000 for video editing.
But the GPU-Z said this Graphics card is fake.
Can someone help me to know why the GPU-Z check it is a fake K4000? Or How can I find out the real model of this graphics card?
Looks like a detection bug in GPU-Z

Open advanced tab / Vulkan
A genuine Kepler GPU shows an installed Vulkan driver.
Fermi or older GPUs would show nothing.
 

Mussels

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the 'fake' function is new and this is a rare card - could be a false positive

@W1zzard can you have a look?
 
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Shader, rop, tmu counts checked, clocks check, gpudatabase, it is probably false alarm or a really good fake. Or an experienced bios modder can check the bios version is correct.
 

W1zzard

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At first look this seems to be a false positive.

The GPU is GK106, but GPU-Z thinks Quadro K4000 should be based on GK104

Anyone know if Quadro K4000 is based on GK104 or GK106 ?
 
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The detection software's function to detect fake cards isn't finalized, older cards such as your one or rarer cards may falsely display "Fake".
 
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Now that could be an issue, so you cant really just trust what GPU-Z say's atm then?
 

W1zzard

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The detection software's function to detect fake cards isn't finalized, older cards such as your one or rarer cards may falsely display "Fake".
How do you know that? I thought I make GPU-Z

According to TPU database is GK106.
I had it defined as GK104 in GPU-Z, which is why there's a mismatch that triggers the fake detection. Changed now, see the attached build

@Ryan Liu please check if the attached build is working correctly
 

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How do you know that? I thought I make GPU-Z
Common sense, The function has only been released recently, it's bound to be buggy within the first week, if there were no bugs then your a OP programmer, software is often buggy and people get mad it at for no reason.
 

W1zzard

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I tested it in the morning, it could be i ran wrong executable, i'll give it another try when i get back home later today.
Thanks!
 

maxslo

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Tried it again, it's definitely still reported as fake with the attached build.
 

Zfast4y0u

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@W1zzard, why do u bother with that function at all? nvida put stop on fake bios flashes nowdays, and amd too i think, only older cards can be manipulated but who cares, in few years no1 gonna use em anyway, let alone buy.
 
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@W1zzard, why do u bother with that function at all? nvida put stop on fake bios flashes nowdays, and amd too i think, only older cards can be manipulated but who cares, in few years no1 gonna use em anyway, let alone buy.
Well it's a great thing to have when buying/selling used cards, as a sort of proof.
 
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