With modern processors getting hotter and hotter, CPU coolers are continuously growing in size to keep up. Some of the largest CPU coolers are passive models that can operate without any fans. But what exactly is the biggest CPU cooler ever made? Is it one of these modern behemoths, or does a cooler from the past hold the record?
To uncover the answer, I delved into CPU cooler history to uncover some truly massive coolers — and one that still reigns supreme today.
SilentMaxx Titan
The largest CPU cooler ever: 9.6 x 6.7 x 5.1-inches
The SilentMaxx Titan stands out for its sheer size and weight, making it an absolute giant of a cooler. With dimensions of almost 10 inches in length and close to 7 inches in width, it is unmatched in volume. Weighing an impressive 2 kilograms (approximately 4.5 pounds), it is a heavyweight in the world of CPU coolers.
This cooler is designed to operate as a passive cooler, capable of handling up to 145 watts. Add a pair of high-performance fans, and it can cool almost anything efficiently and quietly.
Although not available for individual purchase, the SilentMaxx Titan can be found as part of SilentMaxx’s custom-built quiet PCs.
ProlimaTech Genesis
The broadest CPU cooler: 5.7 x 8.5 x 6.3-inches
The ProlimaTech Genesis falls just short of the top spot in terms of size and dimensions. Its large volume and unique design set it apart from other massive air coolers. Released in 2011, this cooler supported the latest AMD and Intel processors, offering a sizable cooling solution with a distinctive configuration.
The dual tower design, with one heat sink oriented horizontally, allowed for additional cooling of components like RAM. Despite its size, the ProlimaTech Genesis faced some challenges, as noted in a Bit-Tech review that highlighted both its effectiveness and drawbacks.
NoFan CR-95C
Another unique design: 7 x 7 x 5.8-inches
The NoFan CR-95C, a cylindrical passive copper cooler, debuted in 2011 and garnered praise for its cooling performance and silent operation despite its large size and high price tag. With a TDP of 95W, it showcased unique passive cooling capabilities that still find application in certain builds today.
Boasting a distinctive look and delivering reliable passive cooling, the NoFan CR-95C remains a standout option for those seeking high performance and silent operation.
Ice Giant ProSiphon Elite
A modern marvel: 6.5 x 10.1 x 4-inches
The Ice Giant ProSiphon Elite, introduced in 2021, aimed to revolutionize air cooling with its gravity-driven heat pipes. Despite initial excitement, this cooler faced tough competition from smaller alternatives due to its specific mounting requirements and large overall size. Although priced at $170, it offers impressive performance, especially in fanless mode.
While the ProSiphon Elite may not have lived up to all expectations, its size and unique design still make it a compelling option for certain cooling needs.
Noctua NH-P1
The best modern passive cooler you can buy: 6.2 x 6.1 x 6-inches
The Noctua NH-P1, praised as one of the best passive CPU coolers available, offers impressive cooling performance in a relatively smaller form factor. Compatible with various AMD and Intel processors, this cooler is designed for passive operation on CPUs up to 100W.
While not the biggest cooler on the list, the Noctua NH-P1 stands out for its effectiveness and versatility in both passive and active cooling setups. Despite its unconventional appearance, it remains a highly recommended choice for those prioritizing performance over size.
You can purchase the Noctua NH-P1 for around $110 from various retailers, providing a solid cooling solution for your system.
For those interested in more CPU cooler options based on performance and cooling efficiency, check out our list of the best CPU coolers in 2024.
