AC Infinity
AC Infinity MULTIFAN S3
Bottom line: The AC Infinity MULTIFAN S3 ($15.99 on Amazon as of 2026-10-07): 52 CFM airflow at just 18 dBA - audible only in a silent room; main trade-off: slim 1 in. depth limits static pressure in packed cabinets.
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*Price sourced from Amazon.com. Last updated 2026-10-07. Price and availability subject to change.
Pros & Cons
Pros
- ✓ 52 CFM airflow at just 18 dBA - audible only in a silent room
- ✓ Multi-speed controller dials airflow down when noise matters
- ✓ Dual-ball bearings rated 67,000 hours (about 7.6 years continuous)
- ✓ USB-powered from a console or AV receiver port - no wall adapter
Cons
- ✗ Slim 1 in. depth limits static pressure in packed cabinets
- ✗ USB power ties fan uptime to the host device's port
- ✗ No thermostat - speed is manual, not temperature-triggered
- ✗ 120mm frame is too large for tight retro console shelves
SpecPicks Verdict
SpecPicks scored AC Infinity MULTIFAN S3 using a rating × review-volume × price-fit model applied to published specs and reviews across the retro cpu coolers & fans category. AC Infinity's retro cpu coolers & fans lineup sits within the broader category mid-tier; price and specs are the deciding factors over brand loyalty here. Judge it on the specification table and the price rather than on sentiment: check the figures that decide your use case, then put it side-by-side with two or three close alternatives in the Compare tool before clicking through.
Common buyer scenarios for retro cpu coolers & fans of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the retailer's listing before purchase. Prices and stock are set by the retailer and may have moved since this page was last updated.
Key Features
- Ultra-quiet UL-certified USB fan designed to cool various electronics and components.
- Features a multi-speed controller to set the fan’s speed to optimal noise and airflow levels.
- Dual-ball bearings have a lifespan of 67,000 hours and allows the fans to be laid flat or stand upright.
- USB plug can power the fan through USB ports found behind popular AV electronics and game consoles.
- Fan Size: 4.7 x 4.7 x 1 in. | Airflow: 52 CFM | Noise: 18 dBA | Bearings: Dual Ball
Full Specifications
| Brand | AC Infinity |
|---|---|
| Model | FBA_AI-MPF120A |
| Voltage | 5 volts |
| Wattage | 5 watts |
| Fan Size | 4.7 x 4.7 x 1 in. | Airflow: 52 CFM | Noise: 18 dBA | Bearings: Dual Ball |
| Material | Rubber |
| Dimensions | 4.7 x 4.7 x 1 in |
| Unit Count | 1 Count |
| Noise Level | 18 db |
| Part Number | FBA_AI-MPF120A |
| Connectivity | USB |
| Compatibility | Xbox |
| Material Type | Rubber |
| Cooling Method | Air |
| Number of Items | 1 |
| Air Flow Capacity | 52 cfm |
| Compatible Devices | Amplifier |
| Power Connector Type | USB |
| Maximum Rotational Speed | 1300 rpm |
| Item Dimensions L x W x H | 4.7"L x 1"W x 4.7"H |
| Full listing title | AC Infinity MULTIFAN S3, Quiet 120mm USB Fan | UL-Certified for Receiver, DVR, PlayStation, Xbox, Computer Cabinet Cooling |
Ready to buy?
AC Infinity MULTIFAN S3, Quiet 120mm USB Fan | UL-Certified for Receiver, DVR, PlayStation, Xbox, Computer Cabinet Cooling is listed on Amazon. Price, availability, shipping and returns are set by Amazon and its sellers — check the listing for current terms. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.
*Price sourced from Amazon.com. Last updated 2026-10-07. Price and availability subject to change.
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