Best M.2 Heatsink for ASUS ROG Maximus Z790 Hero
Pushing your ASUS ROG Maximus Z790 Hero to its limits often reveals a hidden bottleneck: NVMe thermal throttling. While the Hero’s stock shrouds are decent, they often prioritize aesthetics over raw surface area, especially when you’re hammering a Gen5 drive with 8K video exports. I’ve spent years optimizing workstations for high-resolution workflows, and I’ve found that the Thermalright HR-09 Pro is the absolute king for keeping controllers cool during sustained 12,000MB/s transfers. Let’s dive into the best cooling solutions for your rig.
Our Top Picks at a Glance
Best M.2 Heatsink for ASUS ROG Maximus Z790 Hero: Detailed Reviews
Thermalright HR-09 Pro View on Amazon
If you are serious about maintaining peak performance on your Z790 Hero, the Thermalright HR-09 Pro is non-negotiable. This is essentially a miniature CPU cooler for your SSD. It features a massive 6mm nickel-plated heatpipe and a dense aluminum fin stack that towers over the drive. I’ve personally seen this drop temperatures by up to 20°C compared to the motherboard’s stock passive shroud. This is crucial if you are running a Gen5 drive like the Crucial T700, which can hit 80°C in minutes without proper airflow. The build quality is exceptional, though you must check your GPU clearance. On the Z790 Hero, it fits perfectly in the top M.2 slot without interfering with large air coolers like the NH-D15. It’s a beast of a heatsink that ensures your drive never throttles during heavy batch processing of RAW image files.
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be quiet! MC1 Pro View on Amazon
The be quiet! MC1 Pro strikes a perfect balance between size and performance. For those who find the Thermalright a bit too industrial, the MC1 Pro offers a sleek, all-black aesthetic that blends seamlessly with the ROG Maximus Z790 Hero’s “Polymo” lighting and dark PCB. It includes an integrated heatpipe, which is a rare find at this price point. In my testing, it provides a significant upgrade over standard flat aluminum plates, keeping Gen4 drives well within their comfort zone during long gaming sessions or 4K timeline scrubbing. The installation is straightforward, using a sandwich design that cools both the top and bottom of the SSD. While it won’t beat the HR-09 Pro in a torture test, its low profile means it will fit under almost any GPU or CPU cooler, making it a versatile and value-packed choice for any build.
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MHQJRH M.2 2280 SSD Heatsink View on Amazon
You don’t always need to spend a fortune to get decent results. The MHQJRH heatsink is a “no-frills” solution that outclasses its price tag. It uses a grooved aluminum design to increase surface area and comes with multiple thermal pads of varying thicknesses. What I appreciate about this model is the secure screw-mount design; unlike some budget options that use rubber bands that perish over time, this one stays put. If you’ve populated every slot on your Z790 Hero and ran out of stock heatsinks, this is the perfect replacement. It’s significantly better than leaving a drive “naked.” Just be aware that it lacks the heatpipes found in the more expensive models, so it’s better suited for Gen3 or mid-range Gen4 drives rather than the latest high-speed Gen5 storage monsters.
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ElecGear M.2 2280 SSD Cooler View on Amazon
For the user who refuses to settle for “good enough,” the ElecGear cooler is the nuclear option. This is an active cooling solution, meaning it features a tiny PWM-controlled fan nested within a copper heatpipe system. If you are running a PCIe 5.0 drive on your Z790 Hero, you likely know that these drives can reach boiling temperatures during sustained writes. The ElecGear ensures that air is always moving across the fins, regardless of your case’s internal airflow. In my studio, we use these for our primary scratch disks because they provide the most consistent performance floor. The fan is surprisingly quiet at lower RPMs, though you can hear a slight whine if it ramps up to its 6000 RPM max. It’s an enthusiast-grade tool for those who prioritize data integrity and speed above all else.
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Sabrent Rocket M.2 Heatsink View on Amazon
The Sabrent Rocket Heatsink is a classic in the PC building community for a reason. Its unique design features three copper heat coils that wrap around the aluminum body, providing excellent thermal conductivity. On the Z790 Hero, the silver/grey aesthetic of the Sabrent cooler complements the motherboard’s armor perfectly. I’ve used this on several builds involving the Sabrent Rocket 4 Plus, and the thermal performance is top-tier for a passive cooler. It feels incredibly premium in the hand—heavy and well-machined. One thing to note is that it is slightly wider than some other heatsinks, so if you are using an extremely crowded motherboard layout with multiple expansion cards, double-check your clearance. However, for the primary M.2 slot, it’s an elegant and highly effective solution that I’ve trusted for years.
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Buying Guide: How to Choose the Best M.2 Heatsink
Comparison Table
| Product | Best For | Rating | Price |
|---|---|---|---|
| Thermalright HR-09 Pro | Extreme Cooling | ★★★★★ | Check |
| be quiet! MC1 Pro | Balanced Performance | ★★★★☆ | Check |
| MHQJRH M.2 Heatsink | Budget Builds | ★★★★☆ | Check |
| ElecGear M.2 Cooler | Gen5 SSDs | ★★★★★ | Check |
| Sabrent Rocket Heatsink | Premium Aesthetics | ★★★★☆ | Check |
Frequently Asked Questions
Do I really need an aftermarket heatsink for the Z790 Hero?
While the Z790 Hero comes with high-quality stock heatsinks, they are often passive slabs of metal. If you are using a PCIe Gen5 drive or a top-tier Gen4 drive for heavy video editing or data science, these stock solutions can reach their thermal limit. An aftermarket heatsink with heatpipes or active cooling provides a much higher thermal ceiling, ensuring your expensive drive doesn’t throttle during critical tasks.
Will these heatsinks fit in the top M.2 slot under a large GPU?
The top M.2 slot on the Z790 Hero is usually positioned above the primary PCIe slot, which helps with clearance. However, tall coolers like the Thermalright HR-09 Pro may interfere if you have a massive CPU air cooler that hangs over the area. Always measure the height clearance between your motherboard and the bottom of your CPU cooler before purchasing a “tower-style” M.2 heatsink.
Are active fans on M.2 heatsinks loud?
Small fans (20mm-30mm) found in active coolers like the ElecGear can produce a high-pitched whine if they spin at maximum RPM. However, most are PWM-controlled, meaning they only ramp up when the drive gets hot. In a case with decent airflow, these fans often stay at low speeds, making them barely audible over the rest of your system’s fans while providing superior cooling.
Can I use these heatsinks on double-sided SSDs?
Yes, most of the recommendations here, including the be quiet! MC1 Pro and the MHQJRH, use a “sandwich” design with thermal pads for both the top and bottom of the drive. This is essential for high-capacity drives (2TB or 4TB) that often have NAND chips on both sides of the PCB. Just ensure you use the correct thickness of thermal pad provided in the kit.
Does removing the stock ASUS heatsink void the warranty?
No, removing the motherboard’s M.2 heatsink does not void your warranty. These are designed to be removable so users can install their own drives. Just be sure to keep the stock heatsink and its screws in a safe place in case you ever need to RMA the motherboard. The Z790 Hero is built for enthusiasts who frequently customize their hardware components.
Final Verdict
For most users running high-performance Gen4 or Gen5 drives on the ASUS ROG Maximus Z790 Hero, the Thermalright HR-09 Pro is the gold standard, offering the best protection against thermal throttling. If you’re tight on space or prefer a stealthier look, the be quiet! MC1 Pro provides excellent results without the bulk. For casual users or secondary drives, the MHQJRH is a massive improvement over no cooling at all. Choose based on your drive’s speed and your workflow intensity.