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Thermal Grizzly Kryonaut The High Performance Thermal Paste for Cooling All Processors, Graphics Cards and Heat Sinks in Computers and Consoles (1 Gram)
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Item Dimensions LxWxH | 25.2 x 25.2 x 7.6 inches |
Brand | Thermal Grizzly |
Voltage | 0.09 Volts |
Cooling Method | Water, Air |
Compatible Devices | Laptop |
Noise Level | 14 dB |
About this item
- Make sure this fits by entering your model number.
- EXTREMELY high thermal conductivity of 12.5KW achieved with even smaller particles, is perfect for even the most demanding configurations and can also be used in industrial cooling systems
- THERMAL COMPOUND PASTE EASY TO USE - Thanks to a specially constructed syringe and a spatula for spreading thermal grease included. It guarantees a simple, pleasant and precise distribution of the paste on your processor or graphics card
- LONG ACTION - Provides long-lasting effect, thanks to its characteristic and specialized structure, Kryonaut thermal paste does not dry out even at 80° Celsius degrees
- SURPRISING EFFECTS - Already at the first use of this thermal solution, you may experience a drop in temperature, which will reduce the loudness of your equipment and improve the comfort of use
- NUMBER 1 ON THE MARKET - Confirmed by many tests, the most popular choice meets the highest quality standards not only of standard computer users but also of avid Overclocking fans
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Product Description

Thermal Grizzly
- The Kryonaut thermal paste was specially developed for the extremely demanding applications and the highest requirements of the overlocking community. Kryonaut is also recommended as a top product for critical cooling systems in the industrial sector.
- Kryonaut is a silicone-based paste that allows the use of more aluminium in its mix, resulting in better thermal performance and lower operating temperatures.

Thermal Grizzly Kryonaut Thermal Paste
Cryotechnology
"Kryo" - the Greek word for "cold", which is also used in cryogenics - indicates that Kryonaut Thermal Paste is specifically designed for use at low temperatures - it was developed for the true "cryouts" of "extreme overclockers".
Excellent Thermal Conductivity
The contained nanoparticles of aluminium and zinc oxide enable the alignment of the connected surfaces of components such as the processor contact plate or the water block to ensure perfect thermal conductivity.
Kryonaut Thermal Paste
It allows excellent heat conduction between components such as CPU, GPU, LEDs, heat dissipation fin plates and fans. The way it is applied ensures ease of use.
Compatible
- PS3, PS4, PS5
- Xbox 360, One, Series S and Series X
- Excellent for dissipating heat from Macbooks.
- Computer components such as CPU, GPU, LEDs, heat dissipation fins and fans.
- It can work with almost any system either with air or with liquid nitrogen (down to -250°C).
- The cap provided facilitates precise application of the paste.

Kryonaut Kit
- Properties: Thermal Grizzly Kryonaut is an extremely high-performance thermal paste that can also develop its performance in the low-temperature range. Kryonaut thermal paste does not harden and has a high long-term stability.
- Applications: Thermal Grizzly Kryonaut is used in applications that require high temperature resistance, e.g. applications in electrical engineering - especially in computer technology. In addition, Thermal Grizzly Kryonaut covers a wide range of applications and can be used in many industries. Thermal Grizzly Kryonaut is particularly suitable for application with the Thermal Grizzly applicator. However, it can also be applied with a brush, spatula, screen and pad printing.
- Storage conditions: Thermal Grizzly Kryonaut should be stored in dry rooms at room temperature and in its original packaging.
Kryonaut Technical Details
Thermal Conductivity: | 12,5 W/mk |
Thermal Resistance: | 0,0032 K/W |
Electrical Conductivity: | 0 pS/m |
Viscosity: | 120-170 Pas |
Density: | 3,7 g/cm3 |
Temperature: | -250 °C/+350 °C |
Consistency: | Soft |
Colour: | Light-Grey |
Standard Sizes: | 1 g; 5,55 g; 11,1 g; 37 g |
Thickness: | Variable |
Silicone-based: | Yes |
Typical Applications: | CPUs, GPUs, Notebooks, ICs |
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---|---|---|---|---|---|
Thermal Paste Aeronaut | Thermal Paste Hydronaut | Thermal Paste Based on Liquid Metal Conductonaut | Thermopad Minus Pad 8 | Thermal Pad Carbonaut | |
Thermal Conductivity: | 8,5 W/mk | 11,8 W/mk | 73 W/mk | 8 W/mk | 62,5 W/mk |
Temperature: | -150 °C / +200 °C | -200 °C / +350 °C | -100 °C / +250 °C | -250 °C / +150 °C | |
Viscosity: | 110–160 Pas | 140-190 Pas | 0,0021 Pas | ||
Thermal Resistance: | 0,0129 K/W | 0,0076 K/W | |||
Standard Sizes: | 1 g; 3,9 g; 7,8 g | 1 g; 3,9 g; 7,8 g; 26 g | 1 g; 5 g |
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Product information
Product Dimensions | 25.2 x 25.2 x 7.6 inches |
---|---|
Item Weight | 0.035 ounces |
ASIN | B011F7W3LU |
Item model number | TG-K-001-RS |
Customer Reviews |
4.8 out of 5 stars |
Best Sellers Rank | #2 in Silicon Grease |
Is Discontinued By Manufacturer | No |
Date First Available | September 14, 2015 |
Manufacturer | Thermal Grizzly |
Warranty & Support
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Customer reviews
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Reviewed in the United States on July 24, 2020
Top reviews from the United States
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I did a perfect application and was getting worse temps than stock past both on cpu and gpu.
I thought maybe some heat cycles will help it set so that was done over the span of 3 days multiple on of cycles.
Still temps were unacceptable.
The bad news was when I took it apart to see pitting on both the CPU and GPU and on the cooler the past has grit in it sand? Diamonds? Whatever it is my system is scarred for life.
I Googled this situation and others have had the same as i.
Attached is an image of what I received in the package, and I have blocked out the serial number/code but confirmed it was indeed authentic. PLEASE be sure to check that you received an authentication card + be sure to verify.

Reviewed in the United States on July 24, 2020
Attached is an image of what I received in the package, and I have blocked out the serial number/code but confirmed it was indeed authentic. PLEASE be sure to check that you received an authentication card + be sure to verify.


Took it totally apart and scrubbed cleaned everything w/ 91% rubbing alcohol, air duster and a new paint brush (additional dusting) for the finishing touches. Did all the back and mid plates, heatsink, mainboard, fans, cleaned off the old thermal compound and reapplied some of this new Thermal Grizzly Kryonaut compound.
Pre cleaning temps:
22 degrees Celsius ambient room temperature
50 degrees Celsius at idle
91 degrees Celsius at load (100% fan)
The GPU was getting so hot, I lost almost 200mhz on my boost clock, since I was hitting the thermal limits and underclocking itself.
Post cleaning/detailing + Thermal Grizzly Kryonaut: (finger spread method + spatula to smooth it out)
22 degrees Celsius ambient room temperature
33 degrees Celsius at idle
59 degrees Celsius at load (60% fan)
Plus I've gained my boost clock back and I can now overclock this thing once again.
Runs cooler than when I had it brand new out of the box straight from the factory. (If I remember correctly, it was running around 70-75 degrees Celsius at load brand new)
Suffice to say, I was not expecting the results to be this positive. Granted it was filthy, full of dust bunnies and the factory thermal compound was toast.
The only slight negative I could maybe say about this stuff, is it's slightly harder to work with. Definitely a bit thicker and harder to spread vs stuff like Artic Silver or IC Diamond. But still only took me a minute or two to apply it.
All in all, couldn't be happier!
:edit:
As others have mentioned in the comments, a lot of my temps drops were likely due to the cleaning, which is fair. Sadly I didn't do a controlled experiment with just cleaning to know for sure. But I will say the stock thermal paste on this thing was cracker dry and toast. But to what degree either had on the end result I can't say for sure.
I re-pasted my Overpowered 15+ laptop and as you can see in the pictures, before the re-paste I got about 80-83°C maximum temperatures. While after the re-paste I got 85-87° maximum temperatures. I have re applied the paste several times and gotten the same results.
I also used this paste on my desktop (didn't take screenshots) with a delidded 8700k and a H115i extreme and the results were:
Arctic Silver 5: 64-65° max
Kryonaut: 66-67° max.
The fact that I used this paste on both my laptop and desktop, and have also re applied the paste multiple times, leads me to believe that I am using the paste right (since AS5 performs better, *consistently*). And instead that the Kryonaut that I got is fake or a bad batch.

Reviewed in the United States on January 12, 2019
I re-pasted my Overpowered 15+ laptop and as you can see in the pictures, before the re-paste I got about 80-83°C maximum temperatures. While after the re-paste I got 85-87° maximum temperatures. I have re applied the paste several times and gotten the same results.
I also used this paste on my desktop (didn't take screenshots) with a delidded 8700k and a H115i extreme and the results were:
Arctic Silver 5: 64-65° max
Kryonaut: 66-67° max.
The fact that I used this paste on both my laptop and desktop, and have also re applied the paste multiple times, leads me to believe that I am using the paste right (since AS5 performs better, *consistently*). And instead that the Kryonaut that I got is fake or a bad batch.




Top reviews from other countries

As this was the first time taking my expensive laptop apart, I was naturally very tense, due to which mistakes were made as follows :
1. I applied too much paste on CPU. GPU was a bit more but OK.
2. Didn't pay close attention to the thermal pad replacement. (I thought if it works don't fix it)
3. Didn't do a good job in eyeballing the thermal pad contacts. (After final tightening some pads were not making contact with the chokes).
4. Didn't follow the number order when screwing the heat sink/fans back.
As can be seen for from the tests there is not a big drop in temps as "I was expecting". Unfortunately I did not take a pre application tests to compare, but from what I remember with the same tests conducted under similar conditions earlier, the CPU and GPU temps were in their mid to high 80s. So keeping that as a rough ref. 2 cores are giving 10 drop but 2 cores are almost the same (I learn this problem is specific to this laptop later), the GPU has a 10-15 deg drop which is really great. So did the paste work? yes it did but I was expecting the CPU temps especially to stay below 80 DEG mark 🤷.
With the 30% left over paste I decided to give another try with my wife's Acer Aspire 13" R3 laptop (used only 10% of the 30% paste this time). This laptop does not have any fan or vents, there is just a metal plate or heat spreader that dissapates the heat to the chassie. My wife used to complain that the laptop underside gets very hot after an hour of use. The temps used to hover 60-70 deg.
This time I guess I did it right, applied the correct amount of paste, placed ADWITs thermal pads where necessary, checked that all was good before the final placement. The results are great here, as can be seen the temps are almost the same in both tests, but if u see closely before Grizzly after 30 mins of test due to the excess heat generation the laptop is limiting the cpu freq to 880 mhz and average multiplier for 30 mins is *11. After Grizzly results show after 45 mins of test the average multiplier is *22 at the same temps, clearly indicating good heat dissapation. Moreover now thar laptop does not heat up at all on the lap. After 2 hrs the temps hover high 40s to low 50s, and most importantly wife is happy.... hehe
So the paste is Great, BUT does only 40% of the job, rest 60% depends on the applicator's competency 😎.
All the best guys and hope this helped....


Reviewed in India on September 15, 2020
As this was the first time taking my expensive laptop apart, I was naturally very tense, due to which mistakes were made as follows :
1. I applied too much paste on CPU. GPU was a bit more but OK.
2. Didn't pay close attention to the thermal pad replacement. (I thought if it works don't fix it)
3. Didn't do a good job in eyeballing the thermal pad contacts. (After final tightening some pads were not making contact with the chokes).
4. Didn't follow the number order when screwing the heat sink/fans back.
As can be seen for from the tests there is not a big drop in temps as "I was expecting". Unfortunately I did not take a pre application tests to compare, but from what I remember with the same tests conducted under similar conditions earlier, the CPU and GPU temps were in their mid to high 80s. So keeping that as a rough ref. 2 cores are giving 10 drop but 2 cores are almost the same (I learn this problem is specific to this laptop later), the GPU has a 10-15 deg drop which is really great. So did the paste work? yes it did but I was expecting the CPU temps especially to stay below 80 DEG mark 🤷.
With the 30% left over paste I decided to give another try with my wife's Acer Aspire 13" R3 laptop (used only 10% of the 30% paste this time). This laptop does not have any fan or vents, there is just a metal plate or heat spreader that dissapates the heat to the chassie. My wife used to complain that the laptop underside gets very hot after an hour of use. The temps used to hover 60-70 deg.
This time I guess I did it right, applied the correct amount of paste, placed ADWITs thermal pads where necessary, checked that all was good before the final placement. The results are great here, as can be seen the temps are almost the same in both tests, but if u see closely before Grizzly after 30 mins of test due to the excess heat generation the laptop is limiting the cpu freq to 880 mhz and average multiplier for 30 mins is *11. After Grizzly results show after 45 mins of test the average multiplier is *22 at the same temps, clearly indicating good heat dissapation. Moreover now thar laptop does not heat up at all on the lap. After 2 hrs the temps hover high 40s to low 50s, and most importantly wife is happy.... hehe
So the paste is Great, BUT does only 40% of the job, rest 60% depends on the applicator's competency 😎.
All the best guys and hope this helped....








Ce ne sont PAS des résidus de pâte mais bel et bien une dégradation de la surface


Reviewed in France on May 17, 2018
Ce ne sont PAS des résidus de pâte mais bel et bien une dégradation de la surface


Lo mejor de lo mejor en pastas térmicas.


Reviewed in Mexico on December 11, 2020
Lo mejor de lo mejor en pastas térmicas.


Semplicemente il tubetto da 1g è cosi poco che la pasta si asciuga presto all'nterno(dal tempo di confezionamento alla vendita e arrivo al consumatore) diventando asciutta e gommosa (non viscosa, cose molto diverse).
Il risultato è un tappo termico che peggiora le temperature sia in idle che in full load.
Giusto per confronto (intel 8550u) :
kryonaut:
Intel xtu stress test cpu: full-load (boost, no power throttling) 83°C idle 39°C
Ho riprovato con la classica AS5 applicando un velo come faccio sempre:
Intel xtu stress test cpu: full-load (boost, no power throttling) 73°C idle 37°C
Ci tengo a dire una cosa, la conducibilità termica è importante e la kryonaut con 12.5W/m·K ha il miglior valore sul mercato. Ma il problema "geometrico" è altrettanto importante. Se una pasta con 8W/mk di conducibilità la si applica in un velo sottilissimo e uniforme di 20-25 micron(sotto pressione del dissipatore) ha una resa molto migliore di una pasta da 12W/mK che a causa della consistenza rimane dello spessore di un foglio di carta (circa 80micron, sempre a pressione applicata). E poi non fatevi condizionare dai vari test e comparative che mostrano differenze anche di 4-5°C tra una pasta e l'altra. Non è vero, tra una pasta ottima ed una buona cambia una frazione di grado.
La vera differenza la si può fare con metallo liquido (73W/mK), ma purtroppo ha molte controindicazioni, rischi corti circuiti se fuoriesce e corrosivo per alluminio.
Quindi in definitiva, credo sia un problema del formato da 1g. Consiglio il tubo da 11g anche se il prezzo è proibitivo.
Formato da 1g da evitare.