CPS / PCCooler RZ620 CPU Cooler Review

TweakTown Rating: 97%

Our Verdict

The RZ620 is a beast of a CPU cooler. The new thermal king of air coolers is a solid, well-priced solution to combat a hot CPU. Noise levels are a concern, as is size, but otherwise, we see no reason not to grab one.

Pros

• Cost
• Thermal performance
• Orange trim
• Sleeper aesthetic

Cons

• Noise

Should you buy it?

AvoidConsiderShortlistBuy

Buy at Amazon for $69.99 USD

Buy at Newegg for $55.99 USD

Buy at Amazon for $105.99 CAD

Buy at Newegg for $117.59 CAD

Introduction, Specifications, and Pricing

When looking at products from PCCooler or their parent company, CPS, we have limited experience on which to base an opinion. Digging through our records, the only previous appearance from PCCooler was with a trio of coolers, which was more of a spotlight on them than a full-tilt review. There is one takeaway from the preview, however, and that was a look at their G6, the intro to PCCooler and dual-tower air coolers.

The G6 BK is the less feature-rich little brother compared to the cooler they sent most recently. There are many similarities on the most basic level, but finding significant changes does not take a discerning eye. PCCooler lost the pitiful-looking HDT bases and went with a solid base design this time. The fin shape has changed, the number of fins has increased, the coating is matte this time, and the aesthetic game has been seriously upped, delivering a sleeper with just a hint of style.

With open eyes and mind, we welcome PCCooler to our retiring AMD test system and see how well they stack up in this seriously flooded segment of the PC aftermarket. We want to introduce you to the PCCooler RZ620, a dual-tower CPU air cooler with the potential to hang with some of the more prominent players in this game. Scratch that. Strap in and get ready to see a virtually unheard-of company enter the game and annihilate the competition. What you are about to see is impressive.

The specifications shown in the chart are limited, but they get the idea across, and we checked both the packaging and the dysfunctional site for more information. The RZ620 is also known as the Z620 BK due to its black coloration, but we will refer to it as the RZ620 as that is what is printed on the front of the box. This dual-tower design is 130mm side to side, 142.5mm front to back, and stands 157.5mm high unless taller RAM says otherwise. As for its socket support, LGA115x through 1700 and AM4 and AM5 systems are supported.

The body is comprised of two stacks, both housing fifty-four fins in their stacks, with the lower six cut shorter to allow for RAM clearance to a certain extent. The fins are pressed onto six 6mm diameter copper heat pipes and take the heat from the two-piece base. The top is a larger pre-cooler with spring-loaded screws, whereas the base is nickel-plated copper with a finely machined surface.

Cooling these towers are a pair of 120mm fins sporting no part number, but are made by Fluence Technology PLC and have metallic hub caps with the CPS logo on them. As shipped, the fans can spin from 500 to 2000 RPM, delivering 86.73 CFM and 3.2 mmH2O of pressure. Using fluid dynamic bearings to support the hub, these 4-pin powered PWM fans use 0.23A and 2.76W at full tilt. Additionally, an adapter with an in-line micro switch with three positions was sent. We will not be using the adapter for this review.

Lastly, there are always costs and support to consider. Support is standard with a three-year warranty against any issues, damage in transit, or failure of parts. Of course, who wouldn't like more time before support ends? It all comes into play with the entire package deal. You are getting a slick-looking tower cooler that fits in most situations; it came in and killed it, and the fact that it will only set you back $69.99 makes the deal so much sweeter. There is one caveat for all of this, and keen eyes on the fan specs know where this is going. If noise is a major downer for you, the PCCooler RZ620 is not what you are looking for.

Best Deals: CPS / PCCooler RZ620 CPU Cooler

	Today	7 days ago	30 days ago
	$69.99 USD	$69.99 USD	$69.99 USD	Buy
	$55.99 USD	$69.99 USD	$55.99 USD	Buy
	$105.99 CAD	$105.99 CAD	$105.99 CAD	Buy
	$117.59 CAD	$117.59 CAD	$117.59 CAD	Buy
	$69.99 USD	$69.99 USD	$69.99 USD	Buy
	$69.99 USD	$69.99 USD	$69.99 USD	Buy
* Prices last scanned on 4/18/2025 at 1:38 pm CDT - prices may not be accurate, click links above for the latest price. We may earn an affiliate commission from any sales.

Packaging

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The RZ620's packaging is done in greys and silver for the backdrop and printing, making it extremely tough to see. The triangle and the orange pop to the left of the name hint at the cooler's top, proudly shown in the center of the panel.

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The next panel is much like the front, sans the triangles and orange pop. There is just the RZ620 name and a much smaller image of the cooler to look at.

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Matte black is used on the back of the box, and white printing shows us all the specifications we covered earlier, including the fan specifications while using the adapter. The right says to go to a site that does not work, delivers information about the company, and also shows the entire part number and serial number on a pair of stickers.

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The remaining panel offers very little. In the center, we see the RZ620 high-performance CPU cooler and the other half of the orange flag we saw on the front panel.

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Even with obvious damage to the box, we did not mention it because PCCooler shipped the RZ620 encased in dense foam. With everything wrapped in plastic, the hardware between the towers, and the fans inserted to the right, almost nothing will harm this tower short of being run over.

CPS / PCCooler RZ620 CPU Cooler

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Looking down the barrel of the gun, so to speak, we see many black aluminum fins. Under the stack, the pipes are evenly spread across the fins as they exit the base, and we even see shorter fins for RAM clearance. When we reached the top, we found a two-tone matte black and gray plastic cover.

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From the side, both towers are mirrors of each other, sporting fifty-four fins, six short at the bottom. Other things to point out are the in-line nature of the heat pipes from this angle and the high-contrast orange racing stripe across the top cover.

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While the middle of the tower has flat fin edges, both the front and back edges of this dual-tower cooler sport this offset triangular design of the fins. Every five fins are offset from the others, allowing for a better pattern of disruption of all that airflow. The edges of the fins are flat, allowing a solid area for the fans to rest against.

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With much better lighting to highlight the side of the towers, we see that the fins are interlocked at both edges, and the centers use tabs to capture airflow. Next to the interlocking sections of the towers, you can see grooves that allow wire fan clips to lock into them.

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Under the tower is a decent-sized chunk of aluminum, used both as the mounting plate and as a pre-cooler. It is what locks all the pipes together, and while out of focus, a set of spring-loaded screws secure the cooler to the provided hardware.

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From this angle, we see the pipes are pressed into the fin stack, and the coating on the pipes is smooth, while what gets applied to the fins is different and textured, disturbing the airflow. The holes near either end are used at the top to screw in the covers, but it is stamped in all fins anyways,

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The base is a hunk of copper machined in a circular pattern, with the center higher than the edges for more contact pressure. The copper is then nickel-plated thinly, leaving the machine marks visible and increasing the surface area to help remove more heat.

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At the opposite end of the tower, we see the top and the twin cover plates. At the top, in the larger gray portion, we see the CPS logo, and near the bottom, there are black, triangularly textured areas to carry the theme as far as possible without making it over the top. There are tiny splashes of orange as well, but you will need to refer to the intro image of this review to see them.

Accessories and Documentation

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The hardware is chromed and marked with the CPS logo. On the left are the Intel brackets, with the universal Intel backplate in the center and adjustable ends. To the right are the AMD brackets, which require the factory backplate.

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AMD and Intel users will need this set of standoffs, which is threaded to fit the AMD factory plate and the Intel plate shipped with the cooler. The knurled nuts with Phillip's heads are used with the standoffs and brackets to lock the hardware to the motherboard.

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Along with the rest of the hardware, they included a set of four wire fan clips for the pair of fans shipped with the tower. The fan adapter cable with a built-in micro switch allows users to moderate the fan speed and noise to suit their needs. We also got a tube of EX90 thermal paste, enough for a few attempts at mounting the RZ620.

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The fans shipped with the RZ620 are the no-part-number models we see here. The fans are black on black with nine blades, powered by daisy-chained 4-pin PWM connectors. These fans come with large rubber pads front and back, and the hub is covered with a metallic plate sporting the CPS logo.

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The manual is basic, but it gets the job done. The parts are shown, and renderings walk you through the steps. With the condensed hardware setup, it is hard to use the wrong bits.

Installation and Finished Product

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Once we removed the top brackets and screws from our AMD motherboard, we were able to install the standoffs into our backplate. Once set there, we placed the brackets and secured everything with the knurled nuts.

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Jumping past paste application, cooler, and fan mounting, we get to this point: the RZ620 is all set and ready to go. Aligning the fans slightly lower than the towers leaves us looking at nothing but that CPS-branded fan covering the face of the first tower.

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With the RAM that we use, there isn't a clearance issue. With something like TridentZ or similar height sticks, you will need to compensate by raising the front fan and increasing the tower's overall height. There is also enough pigtail on the power cable for the fan wires to daisy chain and still reach the fan header without needing the adapter.

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Lowering the fans a touch allows more of the fan's air to pass through the tower, giving the RZ620 its best chance at success. While 8-pin EPS access is limited due to the dual-tower nature, a third fan could be added if wanted.

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As we step back to take in the view, we like what the RZ620 delivers aesthetically. It is understated and multi-color without much contrast until you get that perfect angle to see the pops of orange. The gray and black fit very well with our motherboard and are a widely used theme for many motherboard makers, so PCCooler did not limit its market in this manner.

Test System Setup, Thermal Tests, and Noise Results

Chad's CPU Cooler Test System Specifications

To see our testing methodology and to find out what goes into making our charts, please refer to our 2020 CPU Cooler Testing and Methodology article for more information.

Thermal Results

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With twenty AIOs ahead of the RZ620, the results feel worse than they are. Under closer examination, the RZ620's 56.1°C result is spectacular, as it is enough to dethrone the FROZN A620 Black as the best air cooler on the market, and it comes from nowhere to top it off.

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The stock result was impressive but could be a fluke due to the PWM curve. As we add more speed to the cores, we increase the heat, sure the RZ620 will stumble. Keeping our CPU at 63.1°C with the added heat is impressive, and while it may be outpaced by some of the AIOs there, it is again the best air cooler in this chart, not by much, but the RZ620 wins again.

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While the Frozn A620 Black is higher in this chart, it is because they leave more on the table than we find in the RZ620's PWM fan curve. We did lose an additional two degrees, allowing the fans to run full speed, but there is a noise penalty to doing this.

Noise Level Results

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If you are in the market for a silent cooler with such performance results, this is not the cooler for you. However, you could tone down the fan speed and just deal with whatever performance is given. Under stock conditions, the PWM curve took the fans to 1054 RPM, delivering 33 dB into the room. While not "loud" at this point, this is the best it will get.

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Still utilizing the PWM curve to control the fans, we saw them spinning at 1226 RPM, but that slight increase in speed brought a lot more noise. We are now chilling in the office with fans at 42 dB, audible in any situation, open-air or enclosed, even with sound dampening. You are going to know it's there.

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Our fans met the specifications. As we let the fans do their best to cool the tower without restraint, they increased to 2001 RPM and pummeled our ear holes with 67 dB of droning from our test system. Even with headphones on, friends will ask you to stop vacuuming when your mic activates while gaming.

Final Thoughts

First, let's clear the air a bit here. The packaging and parts show the CPS logo, so while we assumed CPS is the branding, everything we saw online about the RZ620 led us to PCCooler without mentioning CPS. We know they are tied together, so the naming doesn't bother us either way. Whether you call it CPS or PCCooler, it's all the same. When a cooler comes out of nowhere and annihilates the charts like the RZ620 was able to, the RZ620 becomes the most critical part. Google that, and no matter the branding, you will get what we have shown you.

Now, onto the significant bits. The RZ620 started with a damaged box, which put us in a mood, but we continued. We breathed a sigh of relief once we saw the inner packaging, knowing the cooler was perfectly fine. Out of the packaging, the cooler is visually pleasing from all angles. Sadly, the angle most will use daily hides all the orange accents, but it is part of why we consider this more of a "sleeper" build. If you know it's there, you will look for it, and "secrets" in modding are always cool in our book. We also liked the triangular shapes on the covers, adding a bit more style to the otherwise gray-and-black aesthetic that goes so well with many motherboards out there.

When it comes to performance, when left to do what it is intended to, without any adapters or fiddling around, the RZ620 handled its business so well that it dethroned the previous best-performing air cooler, which held that position for quite a long time. We had hoped that before we retired, this test system would be one last big shake-up in the market, and we found it in the RZ620. While your ears may not love you for this decision, you will find no better performer today.

Noise is a huge concern with the RZ620. Although in typical usage, you will get great results without too much disturbance. At 42 dB worst-case for any gamer or workflow scenarios, we may have been harsh with what we said earlier. Those who want silence will not consider something like this, but this is why there is an in-line switch for fan control. Either that or set your BIOS fan control and deal with it that way.

If you like what you just saw, you can run to Amazon right now and pick up the RZ620 branded with PCCooler as the manufacturer; while the MSRP was set at $69.99, obtaining this 265W TDB cooling monster costs $77.51, we still think its work the added cost. It is visually appealing while not sticking out like a sore thumb; it's a monster regarding thermals and noise. Well, it can be tamed. All in all, room allowing, we strongly urge you to consider the CPS / PCCooler RZ620, the new king of CPU air coolers.