Tech enthusiast and developer Matt Birchler has tested an Apple iPhone 18 Pro with a can of La Croix used as a cooling device to address persistent thermal throttling that he noticed during his other tests with the phone. Surprisingly, this yielded much stronger results than one would assume, given that he simply placed the can of sparkling water on top of the phone, providing a 25% improvement in sustained performance.

Birchier has been benchmarking the A20 Pro processor inside the iPhone 18 Pro, and it has so far offered excellent transcription results in its normal non-sparkling-water-cooled configuration. In one test run, the latest Apple smartphone hit a maximum speed of 447.9 words per second, before settling down to a little over 320 for the 7th to the 20th runs. The reduced performance during the latter stages of a prolonged benchmark run is normal for nearly every portable device, as they reduce performance to avoid thermally damaging their chips and other components.

It’s exactly for this reason that high-performance computers often come with the best CPU coolers, with some enthusiasts preferring the best AIO coolers or custom water-cooling loops to get the most out of their high-end processors. However, this usually isn’t possible with most mainstream phones, unless you’re running a specialized gaming handset like the liquid-cooled Redmagic 11 Pro — but it seems that Birchler found a solution for the iPhone 18 Pro. “I did some benchmarking today and saw how the newest iPhone thermal throttles, which isn’t severe, but does happen,” the developer said. “I know from experience that if you put a cold beverage on the back of your phone, it will cool down really quick, so I thought…the test is obvious.”

So, Birchler pulled out an ice-cold can of La Croix from the fridge, started a benchmarking session consisting of 20 runs, and placed the drink on the back of the phone. After the tests were completed, the results were as expected: even though its initial run had a slightly lower result of 429.5 words per second, the “liquid-cooled” iPhone 18 Pro had a higher average of 400.4. This meant that giving the iPhone a cold drink helped it sustain around 25% higher performance, but at the cost of keeping the phone facing down while running heavy loads.

The average user wouldn’t need cooling solutions like these for most mobile devices. But if you use your device for extensive loads, like gaming or shooting and editing photos and videos, you might notice slower performance and a dimmer screen after a few minutes. You could follow Birchler’s lead and strap a cold drink to the back of your phone to reduce thermal throttling, but it’s going to be inconvenient and impractical. After all, it’s quite awkward to hold your phone while a can is sticking out of its back. This is why some smartphone accessory manufacturers make devices like the Black Shark Magnetic Phone Cooler 6 Pro for gamers or the SmallRig Universal Hyper Chill Cooling Phone Cage and the Tilta Khronos Advanced Kit for filmmakers.

Other enthusiasts have also experimented with their own designs, like this monstrous SSD cooling solution strapped to the back of an iPhone 17 Pro Max. These will allow you to squeeze more performance from your phone, but at the expense of an impractical design, additional weight, and shorter battery life.

Noctua is teaming up with Forced Physics DCT to explore whether the company’s JouleForce micro-channel array-based cooling can be adapted for desktop PCs and workstations. The long–term partnership will focus on developing a quieter way to use the tech, although Noctua said in its announcement that the partnership is not tied to any specific product or release date.

Claimed to be a new third path to cooling, JouleForce goes beyond traditional air and liquid cooling methods. While it is still based on air-cooling, its capabilities far exceed today’s modern CPU coolers, with the ability to cool over 2000W of thermal energy. The technology uses densely packed micro-channels designed to improve heat transfer. According to Forced Physics, its geometry prevents the boundary layer that normally forms along cooling surfaces, allowing heat to be extracted along the entire length of each channel. This essentially enables large amounts of heat to be removed using air alone, without requiring a liquid-cooling loop.

While that sounds impressive, bringing the technology to desktop PCs comes with a major challenge. The micro-channel arrays currently have a pressure drop that is “an order of magnitude and more” above the range of conventional PC fans. Thus, in its current state, JouleForce relies on industrial blowers, high-speed centrifugal fans, or even vacuum pumps to push air through the arrays.

Noctua’s expertise could prove useful as the company is known for developing some of the best performing PC fans. The partnership will investigate ways to reduce the pressure required by the micro-channel arrays or generate the necessary static pressure without making desktop systems excessively loud. “The pressure levels this technology requires in today’s implementations are currently supplied by equipment nobody would want on or under their desk, so this is a demanding, long-term engineering task – and one that we are eager to tackle,” said Roland Mossig, CEO at Noctua.

For now, Noctua and Forced Physics are still in the early research stage, with both companies planning to share updates as the project reaches significant milestones. If the two companies can crack the airflow and acoustic challenges, JouleForce could eventually make its way to desktop PCs. At the same time, Noctua would have a serious advantage in the market compared to other heatsink manufacturers.

A premium PC DIY fan brand has announced that one of its prized spinners is being used in a 4K camera. Noctua says that its NF-A4x10 5V PWM was used by the CAIM1 camera designers due to its quiet, compact nature and strong airflow and pressure performance. This camera runs two intensive processing tasks simultaneously within a compact shell, high-bitrate imaging and cryptography, hence the need for active cooling to prevent throttling.

The CAIM1 is something of a niche product. It has been designed to create photo and video captures that one can say with certainty haven’t been altered or generated using AI. Noctua says it is “cooling a camera built to prove reality.” CAIM1 is short for Counter Artificial Intelligence Machine 1.

From the brief description provided by the source, this anti-AI functionality seems to work by piping the imagery directly from the lens/sensor through an “onboard hardware attestation with edge cryptographic proof generation” process. This is stored on the camera’s “immutable, decentralized storage, enabling the origin of the media to be verified independently,” says the Austrian air-cooling specialist.

Of course Noctua’s involvement was beneficial to the camera makers for its high-quality precision fans. The CAIM1 generates heat through its high-bitrate 4K imaging activity, its cryptographic processing, all within the confines of a compact handling-friendly shell. Other key considerations of the designers were precise PWM fan control, and finding a fan with minimal noise (as the camera records audio) and minimal microvibrations.

Noctua says its NF-A4x10 5V, with its PWM’s SSO2 bearing system and smooth motor drive fitted the bill. This tiny fan was leveraged in a unified single-airstream cooling design with custom anti-vibration mounts, situated right behind the image sensor. This directs air across the sensor’s alloy heatsink backplate, and which gets exhausted though the camera chassis left side.

Our nozzle-headed readers will also be pondering over the Prusa branding on the camera body. The simple answer is that the CAIM1 is still at the prototyping stage and these models have been prepared using 3D printers and Prusament PETG Noctua Beige and Noctua Brown for the outer shell and fan mount. CAIM1 devices will be showcased at a handful of trade shows in Japan later this month. However, commercial batches are targeting Q1 2027 availability.

Today we’re testing MSI’s latest flagship AIO, the MEG Coreliquid E15 360, a luxury AIO with a premium black-and-gold aesthetic symbolizing authority and elegance. So we’re expecting market-leading thermal performance. Of course, the feature that stands out the most is the stunning 6.67-inch curved 2240x1080 AMOLED screen. The whole design looks and feels premium, with a price tag to match.

Let's take a look at the specifications and features of this CPU cooler, then we’ll go over thermal and noise benchmarks to decide if the MEG CoreLiquid E15 360 is good enough to make our list of the best CPU coolers on the market.

Cooler specifications

Features of MSI’s MEG CoreLiquid E15 360 AIO

▶️ Premium black-and-gold aesthetic

MSI’s MEG CoreLiquid E15 features a design that just oozes a feeling of premium quality – each component is precision-made using high-quality components, with gold colored plating flanking black metal. The highlight of this cooler, of course, is the premium curved screen, but if, for some reason, you’d prefer not to use the screen, a stylish black-and-gold pump cover is also included.

▶️ RAM Clearance

As with most AIOs on the market, MSI’s E15 doesn’t overhang or interfere with RAM DIMMs at all, allowing for compatibility with all sizes of DDR4 or DDR5 DIMMs, no matter how tall.

▶️ Magnetic Penrose Triangle

A pretty nifty piece of swag included with this AIO is a magnetic Penrose triangle and, boy, let me tell you, this magnet is strong! How strong? I threw it across the living room to a metal door and it instantly secured itself to the door!

▶️ 28mm thick single-frame fans

There’s more to a cooler than just the heatsink. The included fans have a direct impact on aesthetics, noise levels, and overall thermal performance. The E15 features a 360mm single-frame fan unit, and it is pre-installed for user convenience, saving a few moments during cooler installation.

▶️ MSI EZ Display software – Pros and Cons

Strictly speaking, you don’t actually need to install MSI’s EZ Display software to enjoy the functionality of the included screen. The E15’s default animation shows a Penrose triangle against a background strongly reminiscent of the brutalist Isu ruins from The Fate of Atlantis DLC in Ubisoft’s Assassin’s Creed: Odyssey.

If you’re happy with this default animation, no software installation is necessary. It’s only if you want to customize the screen that software installation is necessary.

Once the MSI EZ Display software has been installed, there are three primary configuration styles. The first is a “full screen” mode that has several stunning animations, each unique but in the same style as the others.

In addition to the visual theme, you can choose to enable several metrics on the screen. In the image above, I’ve enabled the date and time, but you can opt for other things, like CPU and GPU temperatures, processor frequencies, etc.

These are nice features and certainly look good, but that’s where the customization ends for metrics. The EZ Display doesn’t currently let you change the position or size of the metrics displayed. If MSI wants this AIO to appeal to tech enthusiasts, that’s a feature they’ll need to implement – especially when you consider the E15’s luxury price tag. This lack of proper customization is especially annoying when trying to display metrics with a custom image, as shown below.

Another aspect I would like to see improved is the ability to deselect themes in the “playlist.” Currently, if you let the animations shuffle or loop, every single animation (preset and custom) that you have included in your library is played.

The second configuration mode available for this screen is a “split-screen” option, which currently has only two presets. As the mode’s name implies, this splits the display into two parts, allowing for one animation or image on each side of the display.

The last mode available for this screen is extended mode, which allows you to use the display as a secondary monitor with Windows.

This allows you to use your own software and show off themes and images entirely of your own creation, play movies of any length, etc. There is one downside though: when I tested this mode, HDCP would not work on either the MSI display or my primary LG ultrawide monitor when streaming video from Amazon Prime on my primary monitor, resulting in degraded video quality.

▶️ Packaging

The outer packaging loudly advertises the product, with a stunning black-and-gold theme and the AIO’s image on the front. The individual parts in the package are protected with cardboard, with mini boxes for the radiator, pump, accessories, and etc.

Included with the package are:

• Mounting hardware for AMD and Intel platforms
• 120mm fans
• Thermal paste
• Magnetic Penrose triangle
• Bending tube clips

▶️ MSI MEG CORELIQUID E15 360 AM5 Installation

To begin putting things together, you’ll first need to remove the default AM4/5 retention brackets and replace them with the included mounting bars for the AIO.

Next, take the mounting bars and secure them with the included screws.

Now it’s time to apply the thermal compound. If you’re not sure how to do that, we have a handy thermal paste application guide that covers the different methods you can use.

After thermal paste is applied, take the CPU block and press it against the mounting bars, using the built-in screws to secure it in place.

At this point, you’re mostly good to go. You can leave the AIO set up as above if you want, but most users will want to take off the cover from the CPU block and place the screen on top of it instead.

The final step, of course, is to connect the AIO’s cables – ARGB, USB, and PWM.

Real-world testing configuration – AMD AM5 platform

We’ve tested coolers with both the Ryzen 9950X3D and its non-V-Cache sibling, the 9950X. There are some differences in how the 9950X and 9950X3D CPUs are impacted by thermal events. While the heat output of the CCDs of AMD’s 9950X3D is relatively balanced, the 9950X I used has one CCD that runs much hotter than the other, with a difference of over 10 degrees Celsius in some scenarios, shown below.

We’ve since returned to using a 9950X3D for cooler testing, as it has a more balanced heat profile, and is almost certainly a more widely adopted CPU. The benchmark results shared in these reviews may differ from others because I emphasize results that are comparable to real-world use. This means I generally test CPU coolers inside of a closed desktop case, which increases cooling difficulty compared to other testing methods.

Many reviewers test coolers on open test benches, which have a combination of lower airflow needs and lowered ambient temperatures. This can make weak coolers appear stronger than they really are. Some publications have also used generic thermal plates to test cooling solutions. I reject both of these methods because they don’t accurately reflect real-world cooler conditions.

Our latest testing setup uses the FLOVA F50 computer case from Tryx.

This case features a unique “crossflow” fan that pulls air from the side, which the company claims is more effective than traditional intake fans. For air cooling tests, we’ve added a single Noctua NF-A12 G2 intake fan.

PBO Performance and maximum noise levels

We’re going to start this review’s benchmark section by focusing on a traditional maximum performance test, with the CPU cooler’s fans allowed to reach their fastest speeds, for the best cooling possible.

Turning on PBO allows AMD’s Ryzen 9 9950X3D to stretch its legs and consume over 260W. Enabling PBO allows for high power consumption and heat output. When using MSI’s X870E Carbon Wifi motherboard, the CPU will reach its TJ Max (peak temperature) of 95 degrees C (203 F) and thermally throttle, to some extent, with most coolers. When this throttling occurs, I’ve measured the average power consumption to determine performance.

I’ve highlighted the performance of the MEG CoreLiquid E15, the P22, and the prototype P22 to demonstrate how MSI has been continuously improving the thermal performance of its AIOs. The MEG E15 has the second-best results in our current test bench, averaging 62 degrees Celsius over ambient (84 C). Out of curiosity, I also tested the thermal performance to see how better temperatures might perform with an open case – and surprisingly, there was only a single degree’s difference.

The maximum noise levels of this cooler are on the louder end, measuring 48 dBA. But to my ears at least, the the pitch of the cooler’s fans is soft, which makes the cooler feel quieter than how it measures.

200W thermal benchmarks

For the next thermal test, I leave the motherboard settings at their defaults, which results in a power limit of 200W when running Cinebench R23.

Thermal results in this scenario were similar to our first test, with MSI’s E15 being a top performer, holding the third-best results, averaging 47.1 C over ambient (69.1 C).

150W + GPU thermal results

Our next test runs Cinebench on the CPU with a 150W power limit, while also running Furmark on MSI’s RTX 4070 Ti Super Ventus 3x OC. This causes the GPU to consume ~295W of power. This test is designed to emulate the thermals of games, which stress both the CPU and GPU.

MSI’s E15 AIO once again performs well here, with our second-place result when testing in our Tryx FLOVA F50 test bench. Out of curiosity, I also tested this AIO in an open case, which resulted in an additional thermal improvement of 1.8 C.

Noise levels in this scenario were moderate, registering at 40.9 dBA with our Pyle PSP25 sound meter.

Noise-normalized testing

Most testing is performed with the cooler tied to the default fan curve of our MSI X870E Carbon motherboard, but some of y’all prefer to see tests when the noise levels of coolers are equalized. This is especially important to those of you who prefer silent computers. This next test has the CPU cooler noise-normalized to 38.9 dBA, with PBO enabled for the Ryzen 9 9950X3D CPU.

This test is especially difficult, because in addition to the reduced noise from the CPU cooler, our current test bench’s system fans are configured to run extremely silently, below the floor of the noise meter I use to measure dBA.

The results here are simply excellent. MSI’s E15 is one of the few AIOs on the market capable of keeping the CPU under TJ Max with PBO enabled in our current test bench, even when the noise levels of the fans are limited.

Karhu DDR5 RAM thermals testing

Your CPU cooler does not operate in isolation. It has an impact on not just your CPU’s temperatures, but also the other components in your build, like your RAM and GPU. To that end, I’ve run the Karhu RAM stress test. This places a load of ~153W on the CPU and ensures system RAM (DDR5 in my case) is fully stable. In this type of scenario, most AIOs tend to produce worse results than air coolers.

DDR5 temperatures in this test were good, the best of any AIO, save those incorporating VRM or RAM fans.

Conclusion

With a hefty $399 price, this AIO is strictly for users who don’t care much about build budgets. The stunning black-and-gold aesthetic reflects that luxury status, and the included 6.7-inch screen and preset animations are stunning. Thermal performance is also among the best AIOs on the market, so the cooler isn’t all about style over substance.

But of course, with the ongoing inflated prices of RAM, storage, and GPUs, most of us aren’t likely to seriously consider spending nearly $400 on a cooler. If you’re looking for a more budget-minded alternative, I’d encourage you to check out Arctic’s Liquid Freezer III Pro instead.