ARCTIC Liquid Freezer III Pro 420 A-RGB
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Cash on delivery and various payment options and installment plans.
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Receive your order within 2 to 5 business days.
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Technical support from 10 am to 12 pm.
Warranty Coverage
Enjoy a 6-month to 3-year warranty through us with distributors.
Ultimate Thermal Dominance with 38mm Deep Radiator & Active VRM Cooling
The ARCTIC Liquid Freezer III Pro 420 A-RGB is the pinnacle of all-in-one liquid cooling, engineered for enthusiasts demanding maximum thermal headroom. Featuring an oversized 38mm aluminum radiator, three high-static-pressure P14 Pro A-RGB fans, and an integrated VRM pump fan, it tames the hottest Intel and AMD flagship processors with whisper-quiet acoustic efficiency.
Extreme Silicon Overclocking & 300W+ Sustained Power
Tailored for Intel Core i9-14900K and AMD Ryzen 9 9950X builds operating under continuous rendering and heavy compute loads. The massive 420mm radiator surface dissipates excessive heat loads effortlessly without throttling.
Acoustic Silence & Clean Integrated Cable Management
Features fluid dynamic bearing fans and PWM-controlled pump curves that scale down during idle and gaming sessions. Radiator fan cables are routed internally inside the sleeved tubing for a clean, clutter-free PC interior.
Class-Leading 38mm Thick Radiator
With a 38mm thick aluminum fin stack (458mm length), this cooler holds significantly more liquid volume than conventional 27mm radiators, absorbing sudden CPU thermal spikes with unprecedented stability.
High-Pressure P14 Pro PWM A-RGB Fans
Generating up to 5.2 mm H2O static pressure and 110 CFM airflow at 2500 RPM, these 140mm fans drive dense air currents through the thick radiator fins, complemented by dazzling Gen 2 addressable RGB lighting.
LGA1851 & LGA1700 Contact Frame Included
Includes a specialized custom Contact Frame that replaces the standard motherboard ILM, preventing CPU PCB bowing and guaranteeing optimal, uniform pressure across the entire integrated heat spreader.
Active VRM Fan Drops MOSFET Thermals by 18°C
A dedicated PWM fan integrated directly on top of the water block actively cools motherboard voltage regulator modules and surrounding M.2 heatsinks, dropping VRM temperatures from 90°C down to 72°C.
Thermal Dissipation & Acoustic Benchmarks
Comparative thermal headroom and noise levels under heavy synthetic & gaming workloads
Detailed Hardware Specifications
| Product Model | ARCTIC Liquid Freezer III Pro 420 A-RGB |
| Radiator Dimensions | 458 (L) × 138 (W) × 38 (H) mm |
| Total Thickness with Fans | 65 mm (Requires High-Clearance Full-Tower Case) |
| Radiator Material | Aluminum |
| Cold Plate Material | Micro-Skived Copper |
| VRM Fan Speed | 400 – 2500 RPM (PWM Controlled) |
| Pump Speed | 800 – 2800 RPM (PWM Controlled) |
| Radiator Fans | 3× ARCTIC P14 Pro A-RGB (140 mm) |
| Fan Speed | 400 – 2500 RPM |
| Fan Static Pressure | 5.2 mm H2O |
| Fan Airflow | 110 CFM / 186 m³/h |
| Intel Socket Compatibility | LGA 1851, LGA 1700 (Custom Contact Frame Included) |
| AMD Socket Compatibility | AM5, AM4 (Multi-Die Offset Mounting Included) |
| Thermal Compound | ARCTIC MX-6 (0.8 g Pre-applied / Included) |
| Tubing | 450 mm Braided Sleeve with Internal Cable Routing |
| RGB Illumination | Addressable Gen 2 A-RGB (3-Pin 5V Header) |
| Warranty | 6 Years Official Manufacturer Warranty |
