NZXT Kraken X73 & Z63 AIO CPU Cooler Review

NZXT launched its new Kraken Z-3 and X-3 AIO cooler series earlier this year and since then we have had numerous requests to see how the new all-in-one closed-loop CPU coolers perform on our test bench. The time has now come and we have both the X73 360mm and Z63 280mm coolers here ready to be put through their paces in our series of thermal performance tests. So just how will the Z63 and X73 perform? Let’s find out.

Both the new Kraken X-3 and Z-3 series AIO CPU coolers are based on Asetek 7^th generation closed-loop liquid cooling solutions. However, while the base design of the coolers is very similar, the X-3 and Z-3 series have some subtle differences. These unique features are mainly designed to enhance the aesthetics while offering customers variation in both looks and cost, as well as some very handy monitoring tools built into the CPU block of the Z-3.

According to NZXT, a CPU cooler is the centrepiece of every PC build, so the emphasis has been placed on a visual experience in the new Z-3 and X-3 series. The X-3 is the most cost-effective with its understated infinity mirror CPU block design, revised from the previous iteration. While the Z-3 series is the flagship, sporting a beautiful 60mm LCD screen on the CPU block, which NZXT claims to provide “unlimited visual customisation” powered by NZXT CAM software.

NZXT Kraken X-3 coolers are available in 240mm, 280mm and 360mm configurations, the improved RGB infinity mirror CPU block features a 10% larger LED ring and an updated top cap that is rotatable to ensure the NZXT logo is always in the correct orientation. Additionally, an RGB channel is built into the devices, allowing users of other NZXT RGB products to easily connect and synchronise them to the system.

The new Kraken Z-3 series coolers come in 280mm and 360mm sizes only, with a CPU block mounted 60mm (2.36”) LCD screen, that is capable of displaying real-time system information such as CPU temperature as well as animated GIF’s to add a personalised touch to the system.  Other than the visual difference between the two CPU blocks, both the X-3 and Z-3 are largely the same, with the Z-3 series commanding a premium price.

Both X-3 and Z-3 coolers are equipped with understated, all-black 120mm or 140mm  NZXT Aer P fans, with a speed range of 500 – 2000 RPM, noise output of 21-36 dBA and an air pressure rating of 0.18 – 2.93 H₂O in 120mm form, or 500 -1800 RPM, 21 – 38dBA and 0.21 – 2.71mm H₂O with the 140mm versions. Aer P fans feature a fluid dynamic bearing and a standard 4-pin power connector for PWM speed control.

In terms of CPU socket compatibility, all the usual desktop platforms are covered by the NZXT X-3 and Z-3 series, including Intel LGA 1200, 115x, 1366, 2011 and 2066, as well as AMD socket AM4 and high-end desktop TRX40/TR4. however, the bracket needed to install on AMD Ryzen Threadripper platforms is not included with the coolers.

NZXT has chosen to utilise the latest generation 7 Asetek pump unit in its X-3 and Z-3 all-in-one CPU coolers and the company claims this will provide improved thermal performance with reduced noise levels. Generation 6 Asetek pumps already offered solid thermal performance and low noise levels, so it will be interesting to see if performance is improved later during our thermal performance tests.

As usual with Asetek based AIO coolers, the NZXT X-3 and Z-3 series include a premium braided sleeve covering the Ultra-low Evaporation rubber tubing, as well as articulating 90-degree fittings at the CPU block side to assist with positioning during installation, as well as an aluminium radiator, circular copper cold plate and a plastic casing that houses the pump unit.

Key features

• Infinity mirror or LCD screen CPU block design
• 7^th generation Asetek pump
• PWM fan speed control
• Built-in RGB lighting channel
• Simple installation process

Specification

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