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...

Buy Now, Pay Later


As low as $3 / mo
  • – 4-month term
  • – No impact on credit
  • – 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: Only 3 left in stock, order soon!
Fulfilled by Amazon

Arrives Saturday, Feb 14
Order within 16 hours and 13 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: Saturday, Feb 14

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

  • 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

  • Funciona perfecto para la steamdeck
Size: 3.9 Gram / 1.5ml
Excelente pasta termica
Reviewed in the United States on October 22, 2025 by ricki tavares r

  • 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

  • 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 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

  • 9800X3D idles at 35C
Size: 1 Gram
9800X3D idles at 35C, incredible. Couldn't ask for better cooling performance for AMD CPUs. Best paste I've used and wasn't that expensive. Relatively easy to apply though a little runnier than some pastes.
Reviewed in the United States on June 17, 2025 by Red

  • Great Effect!
Size: 3.9 Gram / 1.5ml
This is a very easy thermal interface to work with as it spreads very easily and you don't need much to spread across the entire IHS even on new larger CPUs like Intel's 12th or 13th gen. Temps are great and I see no issues with dry out or degradation in the first few months of use I would have preferred a spatula for spreading instead of the weird heads that you can put on the tube and spread directly on the die. This seems to be a good spot for cost to effect as you get greatly diminished returns on Thermal Grizzly's other more specialized options or other premium thermal interface materials that cost more, and you get notably better thermal results than cheaper offerings from other competitors. ... show more
Reviewed in the United States on July 28, 2023 by Apes_Vs_Grapes

Can't find a product?

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