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NZXT Kraken X73 vs Z73 – What are the differences between these CPU liquid coolers?

If you’re trying to find the bets liquid CPU cooling system possible, NZXT is usually a great option. The NZXT Kraken X73 and NZXT Kraken Z73 are two examples of Kraken X and Z Series that provide better cooling and allows you to personalize and customize the look of your CPU cooler. We’ll help you choose which one you should get by comparing them here. We will compare NZXT Kraken X73 vs Z73 in depth and find all their differences as well as give an assessment of which liquid CPU cooler is a better and more logical choice.

Skimping on adequate thermal solutions is one aspect of PC building most newbies tend to do. Most focus on bringing more FPS than overall system efficiency. This is acceptable in some regards. However, having a horrible CPU cooler can bring more damage to your system. Since your processor runs hot all the time, its lifespan can shorten. Moreover, your system can thermal throttle which is a way for your system to prevent shortening its lifespan. 

Shortening lifespan and atrocious performance can cost you more bucks down the line. One easy fix to all of these problems is by getting your system an AIO liquid cooler. By now, you should be familiar with AIO liquid coolers because they are out for quite some time now. In this article, we are going to compare two high-end AIO liquid solutions from NZXT – the Kraken Z73 and Z73. Without further ado, let’s get into it.

NZXT Kraken X73 vs Kraken Z73 Comparison Chart

NZXT Kraken X73 NZXT Kraken Z73
Cooling Socket Support Intel and AMD sockets Intel and AMD sockets
Display on Water Block No  Yes
Water Block Material Copper Block with Plastic Housing Copper Block with Plastic Housing
Water Block Dimensions 80 x 80 x 55 mm 79 x 79 x 52 mm
Radiator Material Aluminum Aluminum
Radiator Size 3 x 120mm 3 x 120mm
Radiator Dimensions 121 x 394 x 27 mm 121 x 394 x 27 mm
Tubing Material Ultra-low Evaporation Rubber with Nylon Braided Sleeve Ultra-low Evaporation Rubber with Nylon Braided Sleeve
Tubing Length 400mm 400mm
Number of Fans 3 3
Fan Included Aer P120 Aer P120
Fan Dimensions 120 x 120 x 26 mm 120 x 120 x 26 mm
Fan Speed 500-2,000 + 300 RPM 500-2,000 + 300 RPM
Fan Airflow 18.28 – 73.1 1 CFM 18.28 – 73.1 1 CFM
PWM Fan Control Yes Yes
Noise Level 21 – 36 dBA 21 – 36 dBA
Warranty 6 Years 6 Years
Price Check Price on Amazon Check Price on Amazon


NZXT Kraken X73 vs Kraken Z73 – Similarities

Wide Motherboard Socket Compatibility 

The NZXT Kraken Z73 and Z73 have wide compatibility of processors they can cool. Both Kraken AIO liquid coolers include brackets for Intel and AMD processors. For Intel processors, almost all current-generation processors are compatible. However, for AMD’s side, its Threadripper lineup is not compatible out of the box. You need to buy the Threadripper brackets separately. Other than that, Ryzen processors are compatible.

Build and Materials

The build and materials are what to be expected in an AIO liquid cooler. For the water block, NZXT uses a copper cold plate that is housed in a plastic casing. Moreover, its long and beefy radiator that can house three 120mm fans is made out of lightweight and high-quality aluminum. Lastly, the tubing that connects the water block and the radiator which is 400 millimeters long is made out of Ultra-low Evaporation Rubber covered with Nylon Braided Sleeve.

Long Warranty

Kraken Z73 and X73 are backed by NZXT’s 6 years of limited warranty. Although there are little mechanical parts inside these coolers, the gunk can build up inside these AIO liquid coolers which call for a repair. Why does NZXT give 6 years of warranty? Since the most likely to fail first in an AIO liquid cooler is its fans, NZXT is confident enough that it can reach more than 6 years before it fails. In fact, NZXT rated the Aer 120 fans included at around 60,000 hours or 6 years!


Differences between NZXT Kraken X73 vs Kraken Z73

Display on the Water Block

Displays on computer components seem to be a trend these days. Motherboards and computer cases, have it. And now, even AIO liquid coolers have it.

NZXT Kraken X73

Unfortunately, the Kraken X73 does not have a display. Its lack of display is one of the major differences between these AIO liquid coolers. Instead of a display on the water block, NZXT replaced it with RGB lighting. This is why the NZXT Kraken X73 has a lower price point compared to its Z-series counterpart.

NZXT Kraken Z73

On the other hand, The NZXT Kraken Z73 does come with a display in its water block. This display can come to others as a gimmick, but it does more than you think. Let’s talk about its specs first. The circular display is 2.36 inches in diameter with 24-bit true color. It can output up to 320 x 320 pixels in resolution and can reach a peak brightness of 650 cd/m2 (which to be fair is super bright.) So, what does this display do? You can customize the look of your system and make it truly yours by adding a funny GIF. Or you can make it more useful by displaying system temperatures. 

The Winner Is- NZXT Kraken Z73

Cooling Performance

Thermal performance is the most important part of any AIO liquid cooler and the main reason why you want to buy an AIO in the first place.

NZXT Kraken X73

The NZXT Kraken X73 and Z73 have a very similar configuration. In fact, it is too similar that you can assume that both liquid coolers perform identically also. However, that is not the case. At idle with an ambient temperature of 22 degrees, the Kraken X73 performs a little worse and scored 12 degrees Celsius. When the processor is subjected to a load in the same ambient temperature, the X73 records 46 degrees Celsius in temperature.

NZXT Kraken Z73

Even though Z73 and X73 share so many characteristics, their cooling performance is another story entirely. At idle, the Z73 maintained a whole degree (11 degrees Celsius) lower compared with X73 at the same ambient temperature. A significant difference between their thermal performance can be seen more when both are subjected to a load. The Z73 recorded a whopping decrease to 42 degrees Celsius.

The Winner Is- NZXT Kraken Z73

Value for the Money

Based on their cooling performance, the Kraken Z73 has the obvious edge over the X73. However, is it worth it for their price?

NZXT Kraken X73

Generally, Kraken X-series AIO liquid coolers are $100 cheaper than its Z-series counterparts. For an AIO liquid cooler with triple fans, you get a lot with the Kraken X73. To summarize, it is a great performer for its price.

NZXT Kraken Z73

What does the $100 premium get you with the Kraken exactly? First, it has a colorful display on the water block. This feature is only for people who want to customize the look of their build or monitor the temperature of their systems. If you don’t belong to that group of people, perhaps, the Kraken Z73 is not for you. Moreover, it will give you marginally lower temperatures. Is it worth it? It’s up to you. 

The Winner Is- NZXT Kraken X73


Pros and Cons

NZXT Kraken X73


  • The Kraken X73 has an identical build with the more expensive Z73.
  • Although it does not have a display, you get an infinity mirror in the water block.
  • The X73 gives a combination of premium aesthetics and great performance.



  • While the Kraken X73 is cheaper between the two AIO liquid coolers, both are priced at the higher-end market.


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NZXT Kraken Z73


  • The NZXT Kraken Z73 gives a more superior thermal performance.
  • The display on its water block gives you another level of PC build customization.
  • Although both AIO liquid coolers are large, you will find their installation easy.



  • You will pay a heavy premium for the display and the marginally better cooling performance.


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Which Kraken Liquid CPU Cooler to Buy?

NZXT is one of the most respected players in the AIO liquid cooler division. The two Kraken AIO liquid coolers we compared are a testament to that. Currently, nothing beats the thermal performance that the Kraken Z73 offers. And the Kraken X73 is also right up there with its bigger brother. If I were to choose between these two AIO coolers, I would rather choose the Kraken X73 since it still performs quite well without breaking the bank. However, if you are the kind of person who likes the best of everything, go right ahead and choose the Kraken Z73.

Other CPU Cooler Comparisons:


Does the NZXT Kraken X73 and NZXT Kraken Z73 dolaze with AM4 mounting bracket?

Yes, both NZXT Kraken X73 and Z73 models come with an AM4 bracket.

Is Liquid Cooling CPU good choice?

Liquid cooling is certainly a much quieter and much more efficient way than CPU air cooling.

What are the differences between NZXT Kraken X vs Z series?

The main differences are: RGB customizable screen, Cooling performance, and number of fans.