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Kryonaut abrasive??

Discussion in 'Overclocking & Cooling' started by PowerPie5000, Aug 10, 2018.

  1. PowerPie5000

    Hitman

    Joined: Sep 7, 2012

    Posts: 858

    Location: Lancashire, England

    I recently purchased an Alpenfohn Matterhorn Pure cooler along with some Thermal Grizzly Kryonaut paste (from OcUK) for a Core i7 6850k that I bought new a little while ago.

    I had it all installed and running in an MSI X99 board that I wasn't too happy with, so I swapped it over for an Asrock X99 Taichi board earlier today... I was shocked to see how pitted/scratched the mirror finish on the cooler was and also the pitting/scratching on the processors IHS!!

    What could have caused this? The cooler was new with a mirror finish when installed and the CPU was also brand new with not a single mark or anything else on it. I've installed processors countless times and this has never happened before! It's also the first time I've ever used Thermal Grizzly Kryonaut paste (I've always used the Arctic MX range). Is Kryonaut abrasive or does it have large particles? Maybe my tube is contaminated or defective?

    Does anyone have any ideas? And is there anything I can do about this as I'm not too happy considering the installation went perfectly fine and everything was new!


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  2. LuckyBenski

    Mobster

    Joined: Dec 28, 2017

    Posts: 2,528

    Location: London

    How hard have you tried to clean it? Used isopropyl alcohol, and tough wipes like kitchen roll or coffee filters? It looks like dried paste residue that would rub off but coolers and IHS are pretty hard to photograph :)
     
  3. PowerPie5000

    Hitman

    Joined: Sep 7, 2012

    Posts: 858

    Location: Lancashire, England

    It does look like dried paste in one of the shots, but I'm very certain it's not. You'd think I used sand and not thermal paste looking at the condition. I wonder if it's anything to do with the nickel coating on the cooler.. Maybe it flaked? Although I had no issues with a Matterhorn Pure on my old Z97 rig a few years back (it always kept it's shine with Arctic MX-4).

    I use isopropyl fluid and also have isopropyl wipes too. I use dry kitchen roll to wipe off the bulk of the paste, then rub it down with isopropyl and then finish with dry kitchen towel again.

    The installation process went fine so I just don't understand how this has happened? The only thing I've done different is to use Kryonaut paste over the usual Arctic MX-4 after reading the reviews. I always use the spread method too and it's never failed me (looks nice and even when cooler is removed).

    Is there anything I can do about this? I must admit it also feels like the cooler clamps down pretty hard on the X99's 2011 socket.
     
    Last edited: Aug 11, 2018
  4. porfavor

    Associate

    Joined: Nov 29, 2018

    Posts: 4

    Same issue on my 8700K, first time using Kryonaut instead of MX-4 and the die is scratched:

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    [​IMG]
     
  5. Space Monkey

    Don

    Joined: Nov 8, 2007

    Posts: 8,877

    Location: Outer Space

    Does your CPU still work?
     
  6. porfavor

    Associate

    Joined: Nov 29, 2018

    Posts: 4

    Yes, it is working fine.
    I'm still curious how this could happen, it doesn't look like the typical scratches you would expect (caused by IC Diamond for example) but more like permanent residue or maybe some kind of oxidation/alloy.
     
  7. Phixsator

    Mobster

    Joined: Oct 10, 2012

    Posts: 2,997

    Havent had that issue myself with Kryonat from thermal grizzly and i think ive replaced paste like 10-15 times over the last 3-4 months testing different things and trying different hardware.
     
  8. EsaT

    Soldato

    Joined: Jun 6, 2008

    Posts: 5,655

    Location: Finland

    Especially that precise 90 degree angle between marks in latter image looks like something, which would hardly happen if those were scratches.
    Die itself having some slight pattern from some kind "machining" in factory and gathering some residue etc would be more logical explanation for that.
    Also that perfect alignment with die of longer marks in first picture hints toward that.
     
  9. porfavor

    Associate

    Joined: Nov 29, 2018

    Posts: 4

    I thought the same, if this was the common outcome this paste wouldn't be recommended.

    So it comes down to two potential causes:
    1. Userfail: might be that i wasn't careful/patient enough on the applying and/or cleaning process with Isopropyl, but would such behaviour cause this kind of residue on the heatspreader/die?
    2. Bad batch: could be possible that this specific charge of Kryonaut had some impurities (or simply was fake), which would also explain the underwhelming temperature performance that was exactly on par with the MX4.
     
    Last edited: Nov 30, 2018
  10. Apone70

    Wise Guy

    Joined: Aug 15, 2018

    Posts: 1,015

    I noticed a couple of marks on my heatsink today and I use Kryonaut, cooler still works fine but thought it was odd
     
  11. 8 Pack

    OcUK Staff

    Joined: Feb 20, 2012

    Posts: 9,720

    Location: John Smiths Stadium

    Dear me..... Only used it on a couple of thousand cpu (conservative estimate) without issue..
     
  12. WantoN

    Sgarrista

    Joined: Jun 11, 2003

    Posts: 9,990

    Location: Hampshire

    That’s a super weird issue, it looks like a load of grit has been crushed between the IHS and the cooler. I’ve never had a problem with Kryonaut, never noticed it marring any surfaces. I used kryonaut and conductonaut for everything.

    The die could be from a slightly abrasive paper used to clean it, or delidding I suppose, though I can’t quite work out how.

    I only buy my paste from OCUK, eBay and Amazon seem to be flooded with counterfeit goods these days.
     
  13. EsaT

    Soldato

    Joined: Jun 6, 2008

    Posts: 5,655

    Location: Finland

  14. WantoN

    Sgarrista

    Joined: Jun 11, 2003

    Posts: 9,990

    Location: Hampshire

  15. Minstadave

    Capodecina

    Joined: Jan 8, 2004

    Posts: 24,100

    Location: Rutland

    You think the grit is from paper and not the carbon (diamond) in the paste? Sure.....
     
  16. WantoN

    Sgarrista

    Joined: Jun 11, 2003

    Posts: 9,990

    Location: Hampshire

    There’s diamond in Kryonaught?
     
  17. Minstadave

    Capodecina

    Joined: Jan 8, 2004

    Posts: 24,100

    Location: Rutland

    Isn't it carbon based? So either graphite or diamond, but graphite would be conductive. TG don't disclose their secret sauce.

    Edit - Dug around and apparently it's nano-aluminum and zinc-oxide based, so may not have carbon in it.
     
    Last edited: Dec 2, 2018
  18. WantoN

    Sgarrista

    Joined: Jun 11, 2003

    Posts: 9,990

    Location: Hampshire

    Anyway. The scratches are very uniform and omnidirectional, you wouldn’t get that by smushing some paste on, you might get it rubbing in one direction though, with a cloth that’s too abrasive, or dirty.

    As I said though, I don’t trust a lot of sources for things like this these days, so who knows what was in that paste.
     
  19. porfavor

    Associate

    Joined: Nov 29, 2018

    Posts: 4

    I was using isopropyl and a cotton stick to clean the die. I did it previously on the same die to clean the MX4 and then applied the Kryonaut on a fully smooth/intact die, seems highly unlikely this was the cause.

    So the only reasonable explanation is: it was fake.
    I bought it from an Amazon third-party seller, but it looks like a reputable store: snogard.de
     
  20. Minstadave

    Capodecina

    Joined: Jan 8, 2004

    Posts: 24,100

    Location: Rutland

    Or their production slipped and it came through with some larger metal particles than it should.