While solid-state drives (SSDs) have become far more affordable in recent years, traditional 2.5-inch models are increasingly giving way to faster PCI Express NVMe SSDs in the compact M.2 form factor (8 x 2.2 cm). These plug directly into motherboard M.2 slots, eliminating bulky cables for power and data.
NVMe SSDs not only deliver superior speeds and compactness but also match or undercut the pricing of slower SATA drives.
However, their high storage density generates significant heat. Many users overlook how quickly NVMe SSDs can exceed 80°C—well beyond the typical 0°C to 70°C operating range.
In our thermal stress tests, we used a Samsung PM981 NVMe SSD installed in a high-bandwidth M.2 slot above the GPU for consistency. The drive endured three 5-minute runs of CrystalDiskMark 6 under different cooling setups. We recorded idle temps beforehand and peak temps per run, with ambient room temperature steady at 22°C.
Our test rig featured a modern 2nd Gen Ryzen (Zen 2) platform on the X570 chipset, optimized for PCIe 4.0 without bottlenecks. Full specs:
The primary graph shows one benefit of a bare NVMe SSD: better idle cooling from direct case airflow compared to some heatsinks. Thermal pads on heatsinks can underperform at low temps, though differences under 50°C are negligible.
Under load, however, the Samsung PM981 hit 94°C in under a minute, triggering thermal throttling on the Phoenix controller. NAND flash reached 61°C initially, climbing toward 69°C in subsequent runs while the controller stabilized at 96°C with minor performance loss. Sustained high temps like these harm long-term drive health.
Quality motherboards, especially Ryzen X570 boards, often include an M.2 heatsink. While typically thin with limited surface area—and sometimes awkwardly positioned—this Asus unit proved better than nothing, keeping temps below 70°C across all tests.
EKWB, renowned for premium water cooling, offers this $20 SSD heatsink. However, it lacks the brand's usual quality: uneven anodizing and mediocre aluminum disappoint at the price. Performance edges out the stock motherboard option but doesn't justify the cost.
Barrow delivers value-oriented cooling gear. At $18 with free shipping, this heatsink includes an OLED display for real-time temps via integrated sensors—perfect for side-panel glances.
Its dense aluminum, superior finish, and quality thermal pads offset any airflow concerns from the display. It excelled in tests, heating slowest and prioritizing controller cooling while NAND stayed safely at 50-70°C (optimal range).
Do NVMe SSDs need heatsinks? Absolutely yes. Even routine use can cause critical overheating and throttling, shortening lifespan despite masked performance dips.
If your board lacks one, aftermarket options like the $18 Barrow M.2 OLED (with its standout display) are worthwhile, especially after investing in a premium drive.
