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ARCTIC MX-4 (4g) Carbon-Based Thermal Compound, Non-Electricity Conductive, Non-Capacitive

  • Non-conductive
  • Non-capacitive
  • Carbon microparticles-based
  • Does not degrade like metal or silicon compounds
  • 4g syringe
This product qualifies for the Iron Egg guarantee. We'll match any qualifying competitor's price.
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The ARCTIC MX-4 is a new thermal compound that guarantees exceptional heat dissipation from components and maintains the needed stability to push your computer system to its maximum. The ARCTIC MX-4 continues to be overclocker’s ultimate choice when choosing thermal compound.

  • newegg Exceptional Performance The ARCTIC MX-4 is composed of carbon micro-particles that lead to an extremely high thermal conductivity. It guarantees quick and efficient dissipation of heat from the CPU or GPU.
  • newegg Safe and Easy Application The ARCTIC MX-4 is a metal-free and non-electrically conductive compound that eliminates the risks of short circuit and provides protection to your computer. Also the application is very easy as the consistency is just ideal for application on chips.
  • newegg Great Value With its competitive pricing, the ARCTIC MX-4 is the perfect performance thermal compound on the market.

Learn more about the ARCTIC COOLING AC-MX4


Arctic Cooling MX-4


Thermal Conductivity (W/mk): 8.5

Viscosity (poise): 870

Density (g/cm3): 2.5

Net Weight: 4g

The ARCTIC MX-4 is a premium-grade thermal paste with exceptional performance and ease of application. It is an electrically non-conductive paste that is applied between CPU/GPU and designated coolers to transfer the dissipated heat from the components to the heat sink. Since the ARCTIC MX-4 is a metal-free compound, it eliminates the risks of causing short circuit and in turn adding more protection to your computer.

The new formula in the ARCTIC MX-4 features optimal thermal conductivity and low thermal resistance. These characteristics effectively dissipate the emitted heat from the core components.

The consistency of the ARCTIC MX-4 is designed for simple application. Its texture is just thin enough to spread onto components using fingers without creating much mess.


Non-Capacitive, Non-Electricity-Conductive, Carbon-Micro particle Based Thermal Compound

Non-Curing, Non-Corrosive, Non-Bleeding, Excellent for CPU/GPU/Electronics/Lighting Cooling

Low Thermal Resistance/High Thermal Conductivity Dissipating Heat Efficiently

Will Not Short/Damage Delicate Circuitry Like Silver/Metallic-Based Compound

High Viscosity, Easy-Application Syringe, Superb Durability - 4g Syringe Retail Package

Manufacturer Warranty

6 years limited
6 years limited

Quick Info


  • Limited Warranty period (parts): 6 years
  • Limited Warranty period (labor): 6 years

Customer Reviews of the ARCTIC COOLING AC-MX4

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  • Christopher B.
  • 12/26/2014 9:23:10 AM
  • Tech Level: Somewhat High
  • Ownership: 1 day to 1 week
  • Verified Owner

5 out of 5 eggsBest thermal compound i bought so far

Pros: Easy to use
Non conductive
Great temps (Like wow temps went from 32 degrees on idle to 23 on i7 4770k 4,2Ghz with H110 AIO)

Cons: None, its as simple as buying thermal compound should be

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  • david j.
  • 12/21/2014 11:25:55 AM
  • Tech Level: Somewhat High
  • Ownership: 1 day to 1 week
  • Verified Owner

5 out of 5 eggsworks

Pros: easy to apply,non conductive or capacitive,lasts a long time, no curing time. works better than the stuff that came pre-applied on my cor rad. was at idle 30c and almost 70c under full load. (amd 9590) with this idle is now 25c and I could not believe,(had to check several times) never above 45c under full load. for me that speaks for itself..

Cons: not free

Other Thoughts: first time I tried this one, tried on an old cpu and heatsink to see how it spread. not to thick,covered nicely.just used the dot method and worked great.

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  • Jacob R.
  • 12/21/2014 9:27:59 AM
  • Tech Level: Somewhat High
  • Ownership: 1 day to 1 week
  • Verified Owner

4 out of 5 eggsWorks great so far.

Pros: Keeps temps icy cool. The stuff is very easy to apply, can't really go wrong.

Cons: It's not runny but be very careful to not use too much. This stuff spreads very very easily and you may accidentally use too much. That's the only reason I knocked it down an egg. It's not perfect.

Other Thoughts: Overall, great buy, go for it.

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  • Jackson M.
  • 12/10/2014 1:46:29 PM
  • Tech Level: High
  • Ownership: 1 week to 1 month
  • Verified Owner

5 out of 5 eggsZero complaints

Pros: Definitely works, I have nothing to compare this to but I couldn't need anything better.

Cons: It is thicker, and I spread it myself with a card instead of using the line methods. Shouldn't really matter though.

Other Thoughts: Using a Hyper 212 EVO and this stuff, testing an i5-4690k in OCCT at 4.6GHz <-- is barely hitting 70c.

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  • Dillon C.
  • 11/26/2014 10:07:19 PM
  • Tech Level: Somewhat High
  • Ownership: 1 day to 1 week
  • Verified Owner

5 out of 5 eggsAwesome Stuff

Pros: Thick, sticks very well, non-conductive and easy clean up

Used many different kinds of thermal paste but this is the best I've used by far in terms of application and it works par to other thermal pastes as far as I can see in terms of temperature. If it does cure at all its pretty forgiving because this stuff was still very goopy after and hour of sitting un-covered.

Cons: Doesn't make me any better at Faster Than Light

1 out of 1 people found this review helpful. Did you? Yes No

  • Charles T.
  • 11/22/2014 4:04:32 PM
  • Tech Level: Somewhat High
  • Ownership: 1 month to 1 year
  • Verified Owner

5 out of 5 eggsBest Thermal Paste on the Market!

Pros: Retail packaging to prevent damage.

Cures fast, maintains low temps if properly applied.

Cons: I didn't buy it the first time.

Other Thoughts: This is Quality Thermal Paste for enthusiasts. I used to use another popular brand offered on the site, but it was too thick & break-in too long, so decided to try something different.

Found it in Arctic MX-4, recommended to be by a system builder, and it's really good to work with. A pea size bead is all that's needed, just make sure to let the heatsink down straight & easy, so that it doesn't go to one side & give it a very slight wiggle to spread. And you're done.

I like the fact that no extended break in is required, though I still will run the computer an hour or so. A good time to install updates if just putting together, or refurbishing & re-installing the OS. That's all the break-in this paste needs.

Keeps my CPU's at low temps, at idle, around 28-32C, depending on computer. Notebooks may be a little, but not much, higher.

Good time to stock up when on promo. This is an essential item for all who does their own computer repairs, and if cleaning out a notebook, it's best to replace the paste to save time later. Many times what the OEM's uses are shot anyway, if a computer is loaded with dust.

You CPU will thank you by a good cleaning (don't forget the heatsink), and applying this superior paste.

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  • Anonymous
  • 11/16/2014 4:15:59 AM
  • Tech Level: Somewhat High
  • Ownership: 1 week to 1 month

5 out of 5 eggsGreat Thermal Compound

Pros: I will simply say that I am running an i5-4690k at 4.7ghz with 1.34v at 40C on full load. (Full load achieved in Prime95.) Ambient temperatures in the PC's space range from 21C-24C.

I am cooling this chip on air with a Hyper 212 EVO, 5 case fans, and this MX-4 Thermal Compound.

Cons: Need I say more?

1 out of 1 people found this review helpful. Did you? Yes No

  • Samuel J.
  • 11/13/2014 12:04:04 PM
  • Tech Level: Somewhat High
  • Ownership: 1 week to 1 month
  • Verified Owner

5 out of 5 eggslike ice

Pros: keeps cpu very cold, coldest stuff i have used so far.

Cons: dont use to much. its expensive and gets everywhere.

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  • Patrick O.
  • 11/12/2014 12:51:49 PM
  • Tech Level: High
  • Ownership: 1 week to 1 month
  • Verified Owner

5 out of 5 eggsAmazing!!!!!!!

Pros: Got it for $6 on sale. It's thermal compound, and it does it job well.
Easy to spread, non-curing, and keeps temps down efficiently.

Cons: None

Other Thoughts: Better than arctic silver 5, and that has been my long time favorite.

1 out of 1 people found this review helpful. Did you? Yes No

  • Brent B.
  • 11/1/2014 10:45:59 PM
  • Tech Level: Somewhat High
  • Ownership: more than 1 year
  • Verified Owner

5 out of 5 eggsGood stuff

Pros: Good compound, and it's much safer than any metallic or capacitive compound. Doesn't dry up and glue components together. Can be a little finicky about the amount you use, so may require a little practice, and a little goes a long way. Great temps without degradation of compound and temps!

Cons: None

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