Best CPU Coolers For Ryzen 9 3950x In 2023 [In-Depth Guide]

AMD’s top-of-the-line Zen2 CPU, the Ryzen 9 3950X, was introduced with AMD’s all-new 7nm technology. The AMD Ryzen 9 3950X, which has 16 cores and 32 threads and a PCIe 4.0 interface, has arrived on the market to dethrone Intel in the CPU battle. The Ryzen 9 3950X has a 3.5GHz base clock and a 4.7GHz boost frequency. All users will benefit from the AMD Ryzen 9 3950X’s HEDT-class performance. According to AMD, the Ryzen 9 3950X will compete with the Intel 10980XE, both of which have very competitive pricing. The Ryzen 9 3950X is now available at roughly 700$, which is pricier than most CPUs; additionally, keep in mind that a competent board with PCIe 4.0 will put a dent in your budget. However, on the plus side, the Ryzen 9 3950X’s performance and future-proofing characteristics make the CPU well worth the money.

Here is our article summary:

Last update on 2023-12-13

Ryzen 9 3950X Specifications:

• Total Cores: 16
• Total Threads: 32
• Base Clock Speed: 3.5GHz
• Boost Speed: 4.7GHZ
• Default TDP: 105W

Best CPU Coolers For Ryzen 9 3950X

As we all know, unlike in the past, all new CPUs do not come with a stock cooler, and the Ryzen 9 3950X is no exception. Due to the lack of a Ryzen 9 3950X stock cooler, we decided to compile a list of CPU coolers for the Ryzen 9 3950X. We’ll do rigorous research and testing to determine which cooler is the best CPU cooler for Ryzen 9 3950X. We’ll also put each cooler in its own league so you can make a better-informed decision.

Here are the Best CPU Coolers For Ryzen 9 3950X:

1. Noctua NH-L9a-AM4
2. Corsair iCUE H100i Elite
3. ARCTIC Liquid Freezer II 360 RGB
4. CoolerMaster MasterLiquid ML240L RGB V2 White
5. CoolerMaster Hyper 212 Black Edition
6. MSI MEG CoreLiquid S360

Noctua NH-L9a-AM4

Best Low-Profile CPU Cooler For Ryzen 9 3950X

Specifications: Type: Single-fan Low Profile Air Cooler | Fan: 1x NF-A9x14 PWM Fan | Fan Speed: 600-2500 RPM | TDP: 95W | RGB: No | Dimensions: 114mm x 92mm x 37mm | Socket Support: AMD AM4

When it comes to high-end CPU cooling, the name Noctua pops up time and time again. Noctua has been the go-to CPU cooler for over seventeen years, and today will be no different. Noctua is noted for its distinct approach to its products, which includes a wooden-like style that makes its coolers stand out on any given day. Along with good looks and performance, Noctua has managed to make its coolers exceedingly quiet. This is why the Noctua NH-L9a is featured in this list of the best CPU coolers for Ryzen 9 3950X.

The Noctua NH-L9 is the company’s entry-level CPU cooler. It’s designed to look like the standard single fan coolers that come with every CPU, but because it’s from Noctua, the performance will never be the same. The NH-L9 is available in two variants from Noctua: the NH-L9a-AM4 and the NH-L9i.

In terms of physical appearance, the Noctua NH-L9a-AM4 is 37mm tall and 114mm broad, making it the perfect solution for those with Mini-ITX builds. Because of the cooler’s reduced size, it is fully compatible with RAM and PCIe. The NH-L9a-AM4 employs a top-flow CPU cooler’s traditional cooling method, which is to send airflow down through the heatsink and out the sides. The heatsink is made up of 55 aluminum fins that are robust and durable. The two 6mm copper heat pipes are closely pressed against the fins, guaranteeing optimal heat dissipation. Finally, the coolers’ exteriors have an even and tidy appearance. The gleaming base plate is composed entirely of nickel-plated copper, much like any other Noctua cooler.

The Noctua NH-L9a-AM4 comes with a Noctua NF-A9x14 Premium PWM Fan pre-installed. The Noctua NF-A9x14 has an RPM range of 600 to 2500, but with the accompanying Low Noise Adapter (LNA), the maximum RPM may be reduced to 1800.  Noctua claims a noise level of 23.6 dBA, which may be reduced to 14.8 dBA using the LNA Cable. The fan’s exterior is light brown mixed with dark brown, with rubber pads on the to prevent vibrations. The fan is projected to work to its full potential thanks to the Noctua SSo2 bearing.

What We Liked

The Noctua NH-L9a-AM4 may not look the part but it is the buzz of the town. It is the finest alternative for all users due to its 100 percent RAM and PCIe compatibility. Along with offering ideal performance, the appearance and aesthetics are also maintained at a top standard. The Noctua NH-L9a-AM4 is a great candidate in our list because it uses the high-end Noctua NF-A9x14 PWM fan.

Related: Best CPU Cooler For Ryzen 7 3700x

What We Disliked

Although not exactly a drawback for the Noctua NH-L9a-AM4, the cooler may not be suited for individuals interested in overclocking, especially with a cooler with a lower TDP like the NH-L9a-AM4. Additionally, RGB aficionados may be disappointed, since Noctua is more about decent looks than party lights.

What Sets the NH-L9a-AM4 Apart From Its Competitors

The actual testing supports the inclusion of the Noctua NH-L9a-AM4 on our list. Second, Noctua coolers have an aesthetic that is simply out of this world; the brown color combination with the beige is an art form. Finally, it comes down to quality and durability, which Noctua ensures with a 5-year international warranty on all of their products.

Verdict

All in all, the Noctua NH-L9a-AM4 is worthy of its price tag as it performs exceptionally well compared to other coolers in its price range and league. The NH-L9a-AM4 can be installed inside any case of any size thanks to its compact design which offers 100% RAM and PCIe compatibility. The lower TDP may hurt overclockers but the cooler is more meant for users on a budget who likes to run their CPU at stock settings. Other than that the unique design and color combinations make the Noctua NH-L9a-AM4 the Best Low-Profile CPU Cooler For Ryzen 9 3950X.

CORSAIR iCUE H100i Elite 

Best 240mm Liquid Cooler For Ryzen 9 3950X

Specification: Fans: 2x 120 mm | Fans Speed: 2400 RPM | TDP: 170W | Dimensions: 277 x 120 x 27 mm | Weight: 0.91 kg | RGB Fans: Yes | Noise Level: 10 – 37 dBA

It would be unjust to exclude the Corsair iCUE H100i Elite from the Best Ryzen 9 3950x Coolers list. Corsair has been a part of the PC business for a few years now, and they don’t only deal in cooling; they also deal in RAM, PSUs, and cases, among other things. The popularity of AIO coolers has risen in recent years, and now that unlocked CPUs give maximum performance after overclocking, customers will need an AIO cooler to keep their CPUs cool.

The ML120 fans on the Corsair iCUE H100i Elite set it apart from other Corsair coolers. The Corsair ML120 Fans are extremely quiet, and they are quite comparable to the cooler’s platinum version. The iCUE software, which is Corsair’s official program for its devices and can be used to manage lighting and other PWM settings, is another good feature for the Corsair H100i Elite. We reviewed the Corsair iCUE H100i Elite – make sure to read that fully. 

The Corsair iCUE H100i Elite not only performs well, but it also has a beautiful RGB display in both the pump head and the RGB fans, making it a highly-touted prospect. Because of its magnetic levitation bearings, the ML120 Fans can run at low RPMs of 400 to high RPMs of 2400.

What We Liked

Thanks to its 120mm Corsair ML120 fans spinning at high RPMs, the Corsair iCUE H100i Elite delivers high-end performance. With the extremely efficient Corsair iCUE application, we can additionally regulate PWM and RGB.

What We Disliked

The Corsair ML120 fans may be rather noisy at high RPMs, which may be a deal-breaker for some. Several users may also consider the price of such a product to be exorbitant. Overall, we believe the device is enough for consumers that need lavish RGB control.

What Sets the Corsair iCUE H100i Elite Apart From Its Competitors

The word “Corsair iCUE” in the name distinguishes the Corsair iCUE H100i Elite from its competitors. Except for Corsair coolers, no other coolers on the market provide as smooth and effective RGB and PWM control software. To fit their needs, users can design unique graphs and profiles.

Verdict

In summary, the Corsair iCUE H100i Elite is a true jewel among 240mm coolers, particularly for those seeking premium RGB aesthetics as well as excellent cooling performance. The iCUE software, on the other hand, improves the coolers’ performance and appearance and to this, we recommend the Corsair iCUE H100i Elite as the Best 240mm Liquid Cooler For Ryzen 9 3950X

ARCTIC Liquid Freezer II 360 A-RGB

Best 360mm Liquid Cooler For Ryzen 9 3950X

Specification:  Fans: 3x 120 mm | Fans Speed: 3000 RPM | Power: 0.5 W – 2.7 W (Pump + VRM Fan)| Dimensions: 277 x 120 x 27 mm | Weight: 1.73 kg | RGB Fans: Yes | Noise Level: 0.3 Sone

ARCTIC has always been able to keep a balance between Noise, Performance, and Price. Now thanks to its all-new ARCTIC Liquid Freezer II 360 A-RGB their promise is still kept. ARCTIC is known for its credible PC cooling solutions and the Liquid Freezer II 350 RGB is no exception. With 3x 120mm Fans the AIO offers serious cooling to any CPU put in its path. 

The same innovative design pump is used in the ARCTIC Liquid Freezer II 360 A-RGB as it was in the preceding ARCTIC Liquid Freezer II 240 A-RGB. The new efficient design pump has an in-house pump, which means it is quieter and more efficient. On top of the pump header is a little fan that is fully functional and demonstrates how far ARCTIC goes in terms of customer satisfaction. Both the 40mm fan and the pump are PWM controlled on the Liquid Freezer II 360 A-RGB, offering the user far greater control.

The ARCTIC Liquid Freezer II 360 A-RGB includes pre-installed fans as well as excellent cable management. The fans may spin at speeds of up to 3000 RPMs. All three fans are RGB-controlled and have a considerably smoother finish, resulting in no glaring RGB spots. The cooler’s use of high-end aluminum and leak-free hoses for the tubing sets it apart from its competitors.

What We Liked

The ARCTIC Liquid Freezer II 360 A-RGB is compatible with a broad range of Intel and AMD sockets, including the latest AMD AM5 and Intel LGA 1700 sockets. A variety of RGB applications, including Gigabyte Fusion, Asus AURA Sync, and others, can completely manage the RGB fans. The ARCTIC Liquid Freezer II 360 A-RGB has remarkable cooling capabilities. The cooler is designed for high-end overclocking with little temperature fluctuation from stock.

What We Disliked

Many people may be skeptical of the new cooler pump design since it is not only unusual but also lacks RGB capabilities. The AIO, on the other hand, is somewhat heavy and has a thicker radiator, which may cause installation challenges for users with compact cases.

What Sets the ARCTIC Liquid Freezer II 360 A-RGB Apart From Its Competitors

After reviewing the ARCTIC Liquid Freezer II 240 A-RGB we can confirm the Liquid Freezer II 360 A-RGB is no different but even better. The temperature results are of a high-end 360mm AIO and even OC temps would be kept under control with the Liquid Freezer II 360 A-RGB installed. Even at larger loads, the Fans provide a balanced RGB effect with minimal noise levels. The RGB fans are also compatible with a variety of RGB control applications, making them easy to use with other devices.

Verdict

Ultimately, the ARCTIC Liquid Freezer II 360 A-RGB is designed for high-end customers that want to push their CPUs to their limits while maintaining RGB aesthetics. We named the AIO as the Best 360mm Liquid Cooler For Ryzen 9 3950X because of its low noise levels and superb build quality. 

CoolerMaster MasterLiquid ML240L RGB V2 White

Best White CPU Cooler For Ryzen 9 3950X

Specification: Fans: 2x 120 mm | Fans Speed: 1800 RPM | Power: 12V DC 2.36W Pump | Dimensions: 277 x 119.6 x 27.2 mm | RGB Fans: Yes | Noise Level: 8 – 27 dBA

We at Tech4Gamers usually aim to include one or two White build products in our collection so that it may appeal to users of all tastes, and when it comes to White builds, the CoolerMaster MasterLiquid ML240L RGB V2 White is a must-have. CoolerMaster’s MasterLiquid ML240L RGB V2 White is a premium white 240mm AIO cooler. The MasterLiquid ML240L RGB V2 White features a very decent RGB pump head as well as 2x 120mm New SICKLEFLOW RGB fans for users who want to go for a clean white setup.

CoolerMaster has increased the build quality and performance of the CoolerMaster MasterLiquid ML240L RGB V2 White. The new circular pump head is made of PPS (Polyphenylene Sulfide) and glass fiber for a long-lasting construction that also makes it resistant to chemicals, moisture, and water. CoolerMaster significantly improves the pump head by rebuilding the internal impeller and housing; this results in greater performance at the expense of incredibly low noise levels.

2x NEW SICKLEFLOW 120 RGB fans are included with the CoolerMaster MasterLiquid ML240L RGB V2 White. Thanks to the newly developed Air Balance Fan Blades, modern fans are able to maintain a balance between airflow and air pressure. The updated fans have a hollow corner fan design that provides greater resistance and stability, resulting in improved and quieter performance. The RGBs on the other hand, on both the fans and the pump, is completely user-configurable using any RGB software or the included RGB Led controller from CoolerMaster.

What We Liked

The CoolerMaster MasterLiquid ML240L RGB V2 White is an AIO that may be used by a variety of people. Some RGB AIO coolers require RGB-compatible motherboards, however, the MasterLiquid ML240L RGB V2 White can play on its own thanks to the included RGB controller. The CoolerMaster MasterLiquid ML240L RGB V2 White has remarkable performance capabilities, with temperatures that are comparable to other 240mm AIO coolers. The white frosting on the cake is the spherical RGB pump with some good illumination. We also recommend White PC Cases alongside. 

What We Disliked

The CoolerMaster MasterLiquid ML240L RGB V2 White’s performance may not be up to par for some, but given the price tag of roughly $80, we believe it performs admirably.

What Sets the CoolerMaster MasterLiquid ML240L RGB V2 White Apart From Its Competitors

The CoolerMaster MasterLiquid ML240L RGB V2 White is available for roughly 80$ at the time of this review. As a result, the MasterLiquid ML240L RGB V2 White is a very affordable 240mm AIO with great RGB aesthetics and quieter and better performance than many low-end 240mm AIOs. The accompanying RGB controller also distinguishes the MasterLiquid ML240L RGB V2 White from other AIOs that require RGB-compatible motherboards to function. Make sure to read our Best Motherboard For Ryzen 9 3900x Guide. 

Verdict

In conclusion, the CoolerMaster MasterLiquid ML240L RGB V2 White is an excellent value for money, especially for consumers seeking a White 240mm AIO. The CoolerMaster MasterLiquid ML240L RGB V2 White provides superb RGB as well as a premium build quality that will help you in the long term, and as a result, we have chosen the CoolerMaster MasterLiquid ML240L RGB V2 White as the Best White CPU Cooler For Ryzen 9 3950X.

CoolerMaster Hyper 212 Black Edition

Best Budget CPU Cooler For Ryzen 9 3950X

Specifications: Type: Single Fan AIO | TDP: ~150W | Radiator Size: 120mm | Lighting: None | Dimensions: 123 mm x 77 mm x 158.8 mm | Fan: 1x Silencio FP120 120 mm fan

CoolerMaster has to be included in the list once more because it is the center of attention when it comes to PC cooling solutions. This time, it’s not because of its snazzy AIOs, but rather because of its well-known “Hyper 212 Black Edition.” CoolerMaster’s Hyper 212 Black Edition is a budget-friendly single tower air cooler with an all-black exterior for fans of the color black.

The CoolerMaster Hyper212 Black Edition is a single tower air cooler with exceptional cooling capabilities thanks to its 4x heat pipes. The tower’s fin density is astounding, and it’s completely black. The air cooler is 159mm tall, 123mm in length, and 77mm broad, allowing for the most RAM and PCIe clearance possible. As previously stated, the exterior is totally black, with eight Heatpipe tips on top alongside the CoolerMaster logo.

Related: Best CPU Cooler For Ryzen 5 3600

A single Silencio FP120 fan comes included with the CoolerMaster Hyper 212 Black Edition. With an RPM range of 800-2000, the CoolerMaster Silencio FP120 is noted for its quieter performance. The newer Silencio FP120 generates around 25% more air pressure than prior models, resulting in improved overall airflow and lower temperatures.

What We Liked

By purchasing a second fan for the CoolerMaster Hyper 212 Black Edition, users may select a pull-push arrangement, which will help drop temperatures even further. When you’re on a budget, the Silencio FP120’s quieter operations make the Hyper 212 Black Edition a worthwhile choice. Not to mention the black stealthy aesthetics, which are also deserving of consideration. Keep in mind, that you can also save a lot through Budget PC Case as well. 

What We Disliked

There’s not much to complain about when it comes to a budget-friendly cooler, except that CoolerMaster could have supplied a far longer warranty than the 2-year assurance. Though it’s possible I’m losing my mind, how about a little RGB?

What Sets the CoolerMaster Hyper 212 Black Edition Apart From Its Competitors

Many air coolers don’t give 100 percent RAM and PCIe clearance, however, the CoolerMaster Hyper 212 Black Edition does. For even lower temperatures, the Hyper 212 Black Edition may be configured with a dual-fan push-pull arrangement. All of this luxury comes at a very reasonable price.

Verdict

In conclusion, the CoolerMaster Hyper 212 Black Edition offers excellent value for money because of its high-end performance and low noise levels. We chose the CoolerMaster Hyper 212 Black Edition as the Best Budget CPU Cooler For Ryzen 9 3950X because its single tower design can accommodate two fan setup without losing RAM or PCIe clearance, and it does it at a very affordable price.

MSI MEG CoreLiquid S360

Best High-end CPU Cooler For Ryzen 9 3950X

Specification:  Fans: 3x 120 mm | Fans Speed: 2000 RPM | Power: 0.33A 4W Pump | Dimensions: 394 x 120 x 27 mm | RGB Fans: No | Pump Display: IPS 2.4″ | Noise Level: 22.7 dBA

Why even skimp on a cooler when you are already purchasing the AMD Ryzen 9 3950X for the steep price? For the Ryzen 9 3950X, we are bringing you the best premium CPU cooler from MSI. Though it will be expensive, you won’t be dissatisfied with the results. Gaming laptops, graphics cards, motherboards, and even cooling systems are just a few of the products that MSI is well known for. The MSI MEG CoreLiquid S360 is currently ranked as the top premium CPU cooler for the Ryzen 9 3950X on our list.

The MEG CoreLiquid S360 from MSI is one of the Best 360mm AIO; the cooler is more concerned with performance than with appearance, particularly RGB. But don’t be depressed since the RGB is gone; instead, you get a full-on IPS 2.4 “display on the pump header itself.

The 2.4 “The MSI Center Software UI allows you to fully control the IPS display, allowing you to utilize it to display a wide range of content, from customized GIFS and themes to temp data and information. Customers who purchase the MSI MEG CoreLiquid S360 receive a 3-year international warranty from MSI in addition to the premium cooler in all-black.

You can’t hear it approaching since the cooler is so quiet, as MSI has been advertising with the slogan “MEG CORELIQUID S360 CAN’T HEAR IT COMING.” Three MEG Silent Gale P12 gaming fans from MSI, which feature 0 RPM mode for idle operations, are included with the CoreLiquid S360. The premium fans are not equipped with RGB and are designed to do important tasks. The MEG Silent Gale P12 has nine blades to produce the quietest airflow while also minimizing noise. The fans have all the bells and whistles, including vibration pads, yet still feel solid and high-end.

All of the most recent Sockets, including the Intel LGA 1700 and the future AMD Socket AM5, are supported with the MSI MEG CoreLiquid S360. The MSI Center UI is used to operate the MSI MEG CoreLiquid S360. MSI allows the user complete control over everything from fan speed to the IPS display.

What We Liked

Being a high-end 360mm AIO, the MSI MEG CoreLiquid S360 delivers superior cooling capabilities that would top any chart. Even with massively overclocked CPUs, the cooler is capable of maintaining temperature control. Brilliant colors and optimization on the side of the 2.4″ IPS display allow users to adjust the axis for an even display at any moment. Not to mention, the MSI Center UI is very sweet. Users may play with their MEG CoreLiquid S360 all day long without experiencing any latency or glitches.

What We Disliked

Oh well, if it weren’t for the price, I don’t think there would be anything about such a high-end cooler that I would detest.

What Sets the MSI MEG CoreLiquid S360 Apart From Its Competitors

A lot of people consider the MSI MEG CoreLiquid S360 to be one of the best 360mm CPU coolers because it is a high-end variant. The 9-blade MEG Silent Gale P12 fans that help keep temperatures and noise levels low make the MEG CoreLiquid S360’s high-end cooling capabilities possible. The 2.4″ display may not contribute to performance, but it does have an impact on how people seem and are perceived. In addition to showing GIFS, users can quickly view system temperatures thanks to this display. A 60mm fan is also included with the pump to aid in cooling off neighboring parts like the M.2 and VRMs.

Verdict

The MSI MEG CoreLiquid S360 is ultimately a pleasure, even if it comes at a hefty price that is reasonable given what it delivers. The cooler demonstrates how it does not need to prove itself with a sharp 2.4″ IPS display and 3x MEG Silent Gale P12 fans. Users may also tune the fans’ absolute RPM to 0 to provide further quieter operation when there is no load. And we consider the MSI MEG CoreLiquid S360 as the Best High-End CPU Cooler For Ryzen 9 3950X.

How We Chose The Best CPU Cooler For Ryzen 9 3950X

Users must take into account a variety of factors in order to select the Best CPU Cooler For Ryzen 9 3950x, and we did the same. We attempted to find elements that every user would require, particularly when attaching a cooler to their Ryzen 9 3950X, in order to make our list as concise as possible.

Budget

You must first and foremost be aware of how much you can spend on a CPU cooler. Coolers are available in various price ranges, but they provide performance and aesthetics at a sacrifice. You should be aware that you won’t be able to achieve the ideal temperatures or aesthetics using a cheap cooler for your Ryzen 9 3950X. With a cheap cooler, your overclocking potential will likewise be little to nonexistent.

Performance

Users should be aware that they will need a more than adequate Cooler to keep the CPU temperatures low when selecting a powerful CPU like the Ryzen 9 3950X. Therefore, be careful to conduct your homework and pick a CPU cooler wisely.

Compatibility

Every cooler has a socket support list that lists the CPU sockets it supports. Make sure the cooler you buy is compatible with the Ryzen 9 3950X socket to avoid having to send it back.

Size

For their Ryzen 9 3950X, many people wind up buying a highly powerful but huge cooler that they can’t fit in their small cases. Because of this, you need first to determine what kinds and sizes of coolers your case can support. As certain air coolers have a tendency to dangle over the DIMM slots, preventing you from installing your RAM, you should also check for clearance between the cooler’s RAM and PCIe.

Noise

You might need to get a cooler with extremely low noise levels if you wish to keep your Ryzen 9 3950X cool but also prefer less noise. Noctua coolers are renowned for their exceptionally quiet operation. However, be aware that coolers operate at high RPMs and generate a lot of noise while working under heavy loads.

Aesthetics

You can always purchase what you want in the end. Coolers come in a variety of styles, from simple aluminum coolers to all-black coolers with displays in the pump header to RGB coolers. Pick a cooler that expresses who you are and keeps you pleased.

AIO vs. Air Cooler

There are now two types of CPU coolers: AIO (All-In-One) Coolers and Air Coolers. Both of them may or may not operate very differently from one another, but the temperature results do present a noticeable difference.

First, let’s start with air coolers, which have been around for a while. In order to cool the CPU, air coolers employ a traditional heatsink and fan. To disperse heat from the CPU, air coolers employ copper pipes and heat fins. The pipes and fins are subsequently cooled using a single or twin fan configuration. As they provide a straightforward yet effective technique of cooling, air coolers are less expensive than AIO coolers. However, air coolers may make it difficult to clear RAM, especially when two fans are used.

AIO coolers, on the other hand, function similarly to custom water loops or vehicle radiators. AIO coolers include a plug-and-play functionality and are pre-assembled. The pump head, which often sometimes incorporates a fan, pushes coolant into one tube, allowing it to cool via the radiator with the aid of the fans before returning by repeating the process. AIO coolers provide a much more regulated temperature environment coupled with attractive design but, be aware that they are more expensive than air coolers.

The needs of the consumers are ultimately what matters. AIO coolers are more suited to high-end CPUs or users who enjoy overclocking, whilst air coolers work best for consumers who want straightforward but enough cooling capabilities for their standard CPU.

AMD’s Ryzen 9 3950X is a processor. As a result, it connects to motherboards and coolers using the AMD AM4 socket. Before you buy a cooler, make sure it supports the AMD AM4 socket; otherwise, the Ryzen 9 3950X won’t operate with it.