Skip to main content
ARCTIC S4028-15K - 40x40x28 mm Server Fan, 1400–15000 RPM, PWM Regulated, 4-pin Connector, 12 V DC, Rack Cooling Fan - Black
ARCTIC

ARCTIC S4028-15K

Bottom line: The ARCTIC S4028-15K ($9.49 on Amazon as of 2026-10-06): 15000 max RPM tops most 40 mm 12 V fans; main trade-off: at 15000 RPM this 40 mm fan is loud in a desk-side rack.

$9.49

As an Amazon Associate, SpecPicks earns from qualifying purchases. Full disclosure →

Buy on Amazon — $9.49 Compare to similar cooling & fans

By , Founder & Editor-in-Chief · Listing data updated

Mike Perry — Hardware researcher since 2014, focused on GPU performance across gaming, rendering, and local-LLM inference. Synthesises community benchmarks, manufacturer specs, and public forum data into actionable buying guides.

*Price sourced from Amazon.com. Last updated 2026-10-06. Price and availability subject to change.

Pros & Cons

Pros

  • ✓ 15000 max RPM tops most 40 mm 12 V fans
  • ✓ 26.5 mm/H2O static pressure pushes air through dense radiator fins
  • ✓ Dual ball bearings resist heat and dust in enclosed racks
  • ✓ 4-pin PWM header, but also runs on 2-pin and 3-pin headers
  • ✓ 40 cm cable reaches distant headers in 1U and NAS chassis

Cons

  • ✗ At 15000 RPM this 40 mm fan is loud in a desk-side rack
  • ✗ 1400 RPM floor is still audible in a quiet room
  • ✗ 40x40x28 mm depth is thicker than a standard 40x40x10 mm slot
  • ✗ Ball bearings hum more at idle than fluid dynamic bearings

Related Products

Other products in this category you may like:

SpecPicks Verdict

SpecPicks scored ARCTIC S4028-15K using a rating × review-volume × price-fit model applied to published specs and reviews across the cooling & fans category. ARCTIC's cooling & 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 cooling & 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

  • TheS4028-15K's impeller is held in place by two ball bearings, making it both particularly durable and less sensitive to external influences like heat and dust
  • The S4028-15K has a particularly wide speed range that can be regulated via PWM and voltage. With its 15000 max RPM it is one of the strongest 12 V fans with a 40 mm diameter
  • With a static pressure of 26.5 mm/H2O and a maximum airflow of 32.67 m³/h, the S4028-15K is a true all-rounder and is suitable as both a radiator and case fan
  • The S4028-15K fits in 1U server cases, as a replacement fan for routers, switches and NAS. It can also be used for other products such as DVRs, Mini PCs, HTPCs, hard disk enclosures and 3D printers
  • The fan has a standard 4-pin fan connector and can also be connected and controlled on 2-pin or 3-pin headers, while the 40 cm cable allows enough flexibility in positioning

Full Specifications

BrandARCTIC
ColorBlack
ModelACFAN00264A
Voltage12 Volts
MaterialPlastic
Dimensions40x40x28 mm
Unit Count1.0 Count
Noise Level35 Decibels
Part NumberACFAN00264A
Material TypePlastic
Cooling MethodAir
Number of Items1
Air Flow Capacity264 Cubic Feet Per Minute
Compatible DevicesPrinter, Server
Power Connector Type2510 4-Pin Fan-Connector
Warranty Description6 years
Maximum Rotational Speed15000 RPM
Item Dimensions L x W x H1.57"L x 1.1"W x 1.57"H
Full listing titleARCTIC S4028-15K - 40x40x28 mm Server Fan, 1400–15000 RPM, PWM Regulated, 4-pin Connector, 12 V DC, Rack Cooling Fan - Black

Ready to buy?

ARCTIC S4028-15K - 40x40x28 mm Server Fan, 1400–15000 RPM, PWM Regulated, 4-pin Connector, 12 V DC, Rack Cooling Fan - Black 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.

Buy on Amazon — $9.49

*Price sourced from Amazon.com. Last updated 2026-10-06. Price and availability subject to change.

Related Cooling & Fans

Keep exploring SpecPicks

Other buying guides

Browse the catalog

Editorial

More guides & deep dives from the SpecPicks archive

Browse all articles & guides →

More reviews from the SpecPicks archive

Browse all reviews →

Earliest SpecPicks reviews

Browse full archive →
ARCTIC S4028-15K - 40x40x28 mm Server Fan, 1400–15000 RPM, PWM Regulated, 4-pin Connector, 12 V DC, Rack Cooling Fan - Black
$9.49
View on Amazon →