Liquid Freezer III Pro 420 Spec and Price in the United States
The largest cooler in this catalog: a 458 mm radiator, 138 mm wide and 38 mm thick, with three 140 mm P14 Pro fans running 400 to 2500 rpm. Tubing is 500 mm rather than the 450 mm on the smaller Pro models, and the whole assembly weighs 2370 g, so the case has to be able to carry it as well as fit it. Pump 800 to 2800 rpm, block-mounted VRM fan, six-year warranty, and no published dB(A) or watt rating.
Prices exclude sales tax.
The last tracked price for Liquid Freezer III Pro 420 in the United States was $85.99 at Amazon.com, captured 2026-10-03. Across one tracked merchant and 28 days of recorded prices, the 90-day median for Liquid Freezer III Pro 420 is $81.89 and the lowest recorded price is $81.89. 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.
- Liquid Freezer III Pro 420
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
- Cooler type
- Liquid (AIO)
- Fans
- 3
- Fan size
- 140 mm
- Warranty
- 6 years
- Radiator
- 420 mm
- Socket support
- AM5, AM4, LGA1851, LGA1700
- Max fan speed
- 2500 RPM
- Min fan speed
- 400 RPM
- Bearing
- Fluid Dynamic Bearing
- PWM
- Yes
What owners and reviewers say
Summarised from 2 source(s), reviewed September 13, 2026. A source is counted only where it names this model exactly. How we track prices
Commonly praised
- Chart-topping cooling performance, excellent once noise is normalised, at a price well below most competing large coolers.
- Backed by a six-year warranty.
- Arguably the best thermal performance for the money among large coolers, with quick installation and tidy cabling.
- Comes with a six-year warranty.
Commonly criticised
- Can get loud at maximum volume.
- Intel installations require the anti-bending contact frame.
- The block and tubing can interfere with tall M.2 heatsinks and vertically mounted graphics cards.
- The thicker radiator can cause clearance problems in some cases, with minor light bleed from the lighting.
Sources behind this summary
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.