While most motherboards have pre-installed M.2 heatsinks these days, users without one should not rush to buy one. SSD heatsinks weren't always as common as they are today. People were using their Gen3 and Gen4 NVMe drives without heatsinks for years before marketing and motherboard designs changed everyone's minds. Conventional wisdom about SSD heatsinks still revolves around thermal throttling instead of drive longevity, overblowing a problem most users don't have. Unless you have a PCIe 5.0 SSD in your system running especially hot, you will be just fine without a heatsink. All you need is a PC with decent airflow and a drive that's not being choked by adjacent components.

People often exaggerate SSD overheating

It's too niche a problem

Overheating is never good for your components, and the same is true for SSDs. Beyond a certain temperature, your SSD will throttle to reduce performance and hence, temperature to protect itself from lasting damage. It's imperative not to ignore overheating in your system, but most users aren't affected by overheating SSDs. The normal operating temperature range for SSDs is pretty generous, extending to 70–80℃. If your drive never touches such high temperatures, you don't have to fear thermal throttling or scramble to arrange a heatsink for it. The controller inside your SSD is designed to run at temperatures that are seemingly "too hot." It can handle bursts of activity and temporary excursions easily. You only need to worry when it remains over 70℃ for sustained periods of time.

Most users buying SSDs for gaming, browsing, and a little bit of productivity workloads will never stress their drive hard or long enough to throttle it. In fact, many high-performing Gen4 SSDs can sustain stress tests without thermal throttling, making SSD heatsinks unnecessary. You're not "bottlenecking" your SSD by not slapping on a metal bar with a thin thermal pad attached to it. Your PC's existing fan configuration is probably equipped to dissipate any excess heat that the drive generates.

A heatsink will extend drive longevity, but it's still optional

You still don't need one

Your SSD's normal operating temperature might not be touching throttling levels, but it's not exactly doing any favors for its lifespan. Running your drive cooler is likely to extend its remaining life, but the difference might not matter in the long run. You're unlikely to push your SSD to an early grave by running it well within its intended temperature range. Adding a heatsink might make you feel better, but it isn't exactly making your drive immortal. You'll probably replace it long before reaching a point where high temperatures render it unusable. For that to happen, you'd have to stress it way beyond what most workloads are capable of, and we've already established that that's a rare occurrence.

As long as your SSD isn't gasping for air inside a mini-ITX PC and has a reasonable amount of airflow around it, it'll survive for its intended life. A heatsink will probably keep it a few degrees cooler, but it won't make a meaningful difference if your Gen3 or Gen4 SSD is already running well below throttling temperature during load.

Unless you have a Gen5 SSD, a heatsink isn't a must

More speed, more problems

I've mentioned Gen3 and Gen4 SSDs a lot, but what about Gen5 drives? These high-end SSDs almost always need a heatsink to operate under throttling temperatures. A Gen5 SSD can get toasty with a simple metal heatsink, even at idle. A lot is going on under the hood, including signal amplification, signal degradation prevention, and high-speed lane signaling. All of this pushes Gen5 SSDs to alarming temperatures, unless you have a quality heatsink. High-end Gen5 drives pushing 14,000MB/s are especially prone to thermal throttling, unless you slap on a discrete cooler with its own fan. Keeping Gen5 NVMe drives cool is serious business, but that's something only a small percentage of users need to worry about.

The incentive to buy a Gen5 SSD over a Gen4 drive is to benefit from the blazing-fast sequential speeds, but that doesn't offer any real-world benefits in gaming or general OS operations. Only professionals and productivity enthusiasts can realistically make use of these speeds. Gen5 SSDs are more trouble than they're worth, at least for the vast majority of users.

What's in a heatsink?

The conversation around SSD heatsinks isn't whether you need to buy one or not — most motherboards already have them pre-installed. The bigger question is whether users should be overly obsessed with their SSD temperature. Overheating over long periods should never be ignored, but Gen3 and Gen4 NVMe SSDs seldom get too hot. Unless you have a Gen5 SSD, you shouldn't worry too much about using a heatsink. You're much more likely to replace your SSD before it ever wears down due to high temperatures.