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Phanteks M25-140 D-RGB vs SilverStone FN121: Comparison
Phanteks M25-140 D-RGB and SilverStone FN121 separate most on airflow: Phanteks M25-140 D-RGB at 104.62 CFM, SilverStone FN121 at 58.47 CFM, 44% in favour of Phanteks M25-140 D-RGB. Max Speed splits them by another 33%, again favouring Phanteks M25-140 D-RGB.
Specs
| Specification | ![]() | ![]() |
|---|---|---|
| Fan Size | 140 mm | 120 mm |
| Brand | Phanteks | SilverStone |
| Model | M25-140 D-RGB | FN121-P |
| Bearing Type | Hydraulic | Sleeve |
| Lighting | D-RGB | No RGB |
| Max Speed | 1800 RPM | 1200 RPM-33% |
| Airflow | 104.62 CFM | 58.47 CFM-44% |
| PWM Control | Yes | No |
| Connector Type | 4-Pin PWM | 3-Pin DC |
| Positioning | Mainstream D-RGB | Budget |
| Source URL | https://phanteks.com/product/m25-140-black-d-rgb/ | https://www.scan.co.uk/products/120mm-silverstone-sst-fn121-p-1025-fan-9-blades-1200rpm-sleeve-bearing-black |
Price comparison
| Retailer | Phanteks M25-140 D-RGB | SilverStone FN121 |
|---|---|---|
| Amazon | View on Amazon | |
| Newegg | View on Newegg | |
| SilverStone | View on SilverStone |
Disclaimer: The price and specification of the given product may differ from the actual product. Please confirm on the retailer's website before buying.
Verdict
Phanteks M25-140 D-RGB
7 / 10 Expert Rating
A solid, well-matched 140mm companion to the M25-120, best suited to Phanteks-branded builds wanting mixed fan sizes.
SilverStone FN121
6 / 10 Expert Rating
An unremarkable but reliably quiet budget fan for general case airflow.




