SilverStone FX Gold Flex ATX Spec and Price in the United States
Flex ATX is the smallest standard power-supply format, 81.5mm wide and 40.5mm tall, and this is the reference implementation of it: 80 PLUS Gold efficiency in a chassis a 1U rack or a NAS enclosure will take. Cooling is a single 40mm fan from 20 dBA — genuinely audible, which is the trade the format demands. Cables are fixed and the 12V rail is single. SilverStone covers its Flex ATX and TFX families for three years.
Prices exclude sales tax.
The last tracked price for the 350W SilverStone FX Gold Flex ATX in the United States was $119.99 at Amazon.com, captured 2026-10-12. Across one tracked merchant and 53 days of recorded prices, the 90-day median for the 350W SilverStone FX Gold Flex ATX is $119.99 and the lowest recorded price is $102.00. This site began capturing prices on July 30, 2026; for Amazon listings, prices dated earlier come from Keepa's price history.
Captured periodically and may have changed.
- 350W
- 500W
Each point is one day's recorded price, not a list price. Points dated before July 30, 2026, when this site began capturing prices, come from Keepa's Amazon price history. How we track prices
Specifications
- Wattage
- Efficiency
- 80 Plus Gold
- Form factor
- FLEX-ATX
- Modular
- Non-modular
- Fan size
- 40 mm
- Length
- 150 mm
- SATA connectors
- 3
- Noise
- 20 dBA
- Warranty
- 3 years
Wattages
| Configuration | Part number | Fan size | Length | Current best price |
|---|---|---|---|---|
| 350W | SST-FX350-G | 40 mm | 150 mm | $119.99 Price too old to confirm |
| 500W | — | 40 mm | 150 mm | $145.99 Price too old to confirm |
Guides for this category
Sources
Every spec above was pulled from one of these — a field a source didn't state was left off rather than estimated.