Search  for anything...

Thermal Grizzly - Hydronaut - 3.9 Gram/1.5 ml - Conductive High Performance Thermal Paste - Ideal for Air and Water Cooling CPU/GPU/PS4/PS5/Xbox - for Large Cooling Surfaces

  • Based on 4,678 reviews
Condition: New
Checking for the best price...
$11.99 Why this price?
Save $2.00 was $13.99

Buy Now, Pay Later


As low as $2 / mo
  • – 4-month term
  • – No impact on credit to apply
  • – Instant approval decision
  • – Secure and straightforward checkout

Ready to go? Add this product to your cart and select a plan during checkout.

Payment plans are offered through our trusted finance partners Klarna, Affirm, Afterpay, Apple Pay, and PayTomorrow. No-credit-needed leasing options through Acima may also be available at checkout.

Learn more about financing & leasing here.

Selected Option

Free shipping on this product

FREE 30-day refund/replacement

To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.

To initiate a return, please visit our Returns Center.

View our full returns policy here.


Availability: In Stock.
Fulfilled by Amazon

Arrives Monday, Apr 13
Order within 7 hours and 32 minutes
Available payment plans shown during checkout

Protection Plan Protect Your Purchase
Checking for protection plans...

Size: 3.9 Gram / 1.5ml


Features

  • ULTIMATE OVERCLOCKING PERFORMANCE - With its outstanding thermal conductivity, Hydronaut can handle overclocking, making it perfect for users with large heatsinks seeking a high-quality product at an attractive price-performance ratio, such as for their water cooling system
  • PRECISE APPLICATION - The practical syringe allows for easy application of this thermal paste, delivering it exactly where it needs to be. Ideal for CPU and cooling, GPU, LEDs, and heat sink fins
  • PERFECT HEAT CONDUCTION - Provides awless heat transfer without integration into the processor. Excellent thermal conductivity; thermal resistance of 0.0076 K/W
  • VERSATILE COMPATIBILITY - Compatible not only with computers or laptops but also with PS 3, 4, 5, Xbox 360, One, and Series X consoles! Perfectly dissipates heat from MacBooks
  • LONG-LASTING STABILITY - Hydronaut thermal paste does not harden and oers high long-term stability. It does not require a hardener, contains no silicone, and is non-conductive

Product Dimensions: ‎22 x 11.5 x 22 inches


Item Weight: ‎0.138 ounces


Manufacturer: ‎Thermal Grizzly


Item model number: ‎TG-H-015-R


Is Discontinued By Manufacturer: ‎No


Date First Available: ‎June 13, 2015


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Monday, Apr 13

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • PayTomorrow Financing
  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Top Amazon Reviews


  • Great stuff, easy to use
Size: 1 Gram
I did a lot of research into thermal paste. This was what I settled on for my AIO. Would it have made a difference? I don't know for sure, but I know I've been happy with the performance and use of this product. Is it one of the best pastes? Yes. Is it one of the longer lasting pastes? Yes, from what I can tell. Was it easy to use? Yes. Spread was easy, but you can easily use a line and spread it with heat sink pressure as well. It's thick enough that it can stick if you want it to and can coat a device easily. Is it the absoulte best? Specs say no. but... Is it a great value? Yes. The more expensive stuff has ratings that are barely better than this at 3-5 times the price. At best, that might find you an extra 1-2C when doing some pretty extreme things. I'm a power user, but I'm practical. This stuff is great for my PC, and one day I may repaste my old laptop with this as well. Given I've leaned into undervolting vs Overclocking, this gives me all the performance I need. ... show more
Reviewed in the United States on October 31, 2023 by Bront

  • At least 5 to 10°C less, UNBELIAVABLE !!!
Size: 1 Gram
The media could not be loaded. This thermal paste got my RTX 3070 Asus Dual OC from 85°C to 70/75°C and my i7 12700KF from 75°C to around 65/70°C, it is amazing the big impact on temps, i totally recommend this thermal paste, 1 gram is more than enough to cover CPU and GPU and still i have some left. ... show more
Reviewed in the United States on March 30, 2026 by Fernando Spray

  • Works great and has plenty extra jsut in case
Size: 1 Gram
Cool stuff! Literally… I’ve tried a few kinds of thermal paste and as far as I can tell this one has been the most effective. Much better than the junk that came with my CPU cooler. Even the small size has enough to use it at least three times.
Reviewed in the United States on January 28, 2026 by Jason

  • Expensive but good!
Size: 1 Gram
After a year or so the paste didn’t dry, not in the tube nor on the cpu. Very happy with thermal grizzly products. It’s second time I bought it and I will buy it again! Very solid!!!
Reviewed in the United States on January 14, 2026 by Bogdan

  • It’s thermal paste
Size: 3.9 Gram / 1.5ml
It’s got the goo man, helps with the transfer of heat dude. But in all seriousness, Its a decent viscosity but the applicator tips were not the best and caused a bit of buildup
Reviewed in the United States on November 15, 2024 by Jake Z

  • Works great
Size: 3.9 Gram / 1.5ml
Works great easy to use will definitely be buying again
Reviewed in the United States on March 9, 2026 by Travis Moss

  • Much better than generic pastes.
Size: 3.9 Gram / 1.5ml
Most definitely works better and lasts longer than generic pastes. Especially in high performance laptops.
Reviewed in the United States on January 26, 2026 by Daniel Dellobuono jr

  • Alto rendimiento y bajas temperaturas
Size: 1 Gram
De las mejores pastas térmicas en cuanto a rendimiento y temperaturas estables lo estoy utilizando con mi R7 5700x y va en mayor exigencia a 68-70 grados a comparación de antes de usarla que estaba perma 95
Reviewed in the United States on March 11, 2026 by julio hueso martinez

Can't find a product?

Find it on Amazon first, then paste the link below.
Checking for best price...