When venturing into the world of cryptocurrency mining, choosing the right ASIC miner is crucial. This review focuses on the WindMiner K9, a Kaspa miner that promised much but delivered little, and contrasts it with more reliable alternatives like the Antminer KS3 and Iceriver KS3M.

A Closer Look at the WindMiner K9

Specifications: The WindMiner K9 was launched in November 2023, boasting a hash rate of 10.5 Th/s and a power consumption of 3300 W. It featured four fans, a voltage range of 165 to 300 Volts, and measured 305 x 185 x 290 mm, weighing 14800 g​​.

User Experience and Build Quality: My experience with the WindMiner K9 was fraught with issues from the outset. Not only did the hashing boards fail upon receipt, but the build quality was remarkably poor. The machine’s power supply was dislodged, most likely during shipping, due to inadequate packaging. Additionally, the hashing boards were not properly secured in their rails, raising serious concerns about the overall assembly quality.

Interface and Usability: Further complicating its use, the WindMiner K9 comes with a GUI that seems outdated, reminiscent of last century’s technology. The included tutorial, written in Chinese, does little to aid non-Mandarin speakers, making the setup process even more challenging.

Trustworthy Alternatives

Given these significant shortcomings, let’s explore more reliable options:

Antminer KS3: A trusted name in the ASIC mining world, the Antminer KS3 offers a stable and efficient mining experience. Its reputation for quality and reliability makes it a far safer choice than the WindMiner K9.

Iceriver KS3M: The Iceriver KS3M, while having its own minor issues, stands out for its overall decent quality. With a relatively low issue rate of about 4-5%, it proves to be a more reliable option compared to the WindMiner K9’s 100% failure rate.


The WindMiner K9’s combination of hardware failures, outdated interface, and poor build quality make it a risky choice for anyone serious about cryptocurrency mining. In contrast, the Antminer KS3 and Iceriver KS3M offer more reliable and user-friendly experiences. Investing in ASIC mining equipment is a significant decision, and it’s imperative to choose machines that not only promise high performance but also deliver reliability and ease of use.