{"data":{"slug":"arctic-liquid-freezer-iii-pro-420","type":"cpu_cooler","brand":"ARCTIC","name":"Liquid Freezer III Pro 420","aliases":["Liquid Freezer III Pro 420 Black","LF III Pro 420","ACFRE00181A"],"release_date":"2025-07","url":"https://arkivo.dev/cpu-coolers/arctic-liquid-freezer-iii-pro-420","specs":{"series":"Liquid Freezer III Pro","model_numbers":["ACFRE00181A","ACFRE00185A","ACFRE00189A"],"gtins":["4895265000348","840033403016","4895265000355","840033403023","4895265000362","840033403030"],"announce_date":"2025-07-09","status":"available","predecessor":null,"successor":null,"launch_price_usd":148.99,"launch_price_eur":null,"markets":["US","EU"],"colors":["Black","White"],"manufacturer_url":"https://www.arctic.de/en/Liquid-Freezer-III-Pro-420/ACFRE00181A","spec_sheet_url":"https://www.arctic.de/media/b2/dc/e3/1749041473/Spec_Sheet_Liquid_Freezer_III_Pro_420_EN.pdf","manual_url":"https://support.arctic.de/liquid-freezer-III-pro-420","eprel_registration_number":null,"warranty_years":6,"cpu_cooler":"aio_liquid","air_cooler_layout":null,"rated_tdp_w":null,"base_material":"copper","thermal_paste":"included","sockets":["AM5","AM4","LGA1851","LGA1700"],"ram_clearance_mm":null,"offset_mounting":true,"heatpipe_count":null,"heatpipe_diameter_mm":null,"direct_contact_heatpipes":null,"radiator_mm":420,"radiator_dimensions_mm":{"length_mm":458,"width_mm":138,"thickness_mm":38},"radiator_material":"aluminium","tube_length_mm":500,"pump_speed_max_rpm":2800,"pump_connector":"pwm_4_pin","vrm_fan":true,"fans":[{"model":"P14 Pro","size_mm":140,"count":3,"speed_min_rpm":400,"speed_max_rpm":2500,"airflow_cfm":110,"static_pressure_mmh2o":5.2,"noise_dba":null,"bearing":"fluid_dynamic","connector":"pwm_4_pin"}],"fan_count":3,"rgb_lighting":false,"lighting_standard":null,"display_type":"none","display_size_in":null,"display_resolution":null,"software_name":null,"usb_header_required":false,"cybenetics_theta_am5":"platinum","cybenetics_theta_lga1851":null,"measured_op_30dba_am5":11669,"measured_op_30dba_lga1851":null,"measured_noise_max_dba":46.7,"measured_thermal_tests":[{"test_cpu":"AMD Ryzen 9 7900X","load":"Prime95 Small FFTs, full CPU load, PBO enabled","cpu_power_w":198.9,"fan_setting":"20 dB(A)","noise_dba":20,"cpu_temp_c":92.5,"temp_over_ambient_c":null},{"test_cpu":"AMD Ryzen 9 7900X","load":"Prime95 Small FFTs, full CPU load, PBO enabled","cpu_power_w":202.1,"fan_setting":"25 dB(A)","noise_dba":25,"cpu_temp_c":90.9,"temp_over_ambient_c":null},{"test_cpu":"AMD Ryzen 9 7900X","load":"Prime95 Small FFTs, full CPU load, PBO enabled","cpu_power_w":201.5,"fan_setting":"30 dB(A)","noise_dba":30,"cpu_temp_c":90.2,"temp_over_ambient_c":null},{"test_cpu":"AMD Ryzen 9 7900X","load":"Prime95 Small FFTs, full CPU load, PBO enabled","cpu_power_w":203.4,"fan_setting":"35 dB(A)","noise_dba":35,"cpu_temp_c":89.9,"temp_over_ambient_c":null},{"test_cpu":"AMD Ryzen 9 7900X","load":"Prime95 Small FFTs, full CPU load, PBO enabled","cpu_power_w":204.1,"fan_setting":"40 dB(A)","noise_dba":40,"cpu_temp_c":88.7,"temp_over_ambient_c":null},{"test_cpu":"AMD Ryzen 9 7900X","load":"Prime95 Small FFTs, full CPU load, PBO enabled","cpu_power_w":204.8,"fan_setting":"100%","noise_dba":46.7,"cpu_temp_c":88.7,"temp_over_ambient_c":null},{"test_cpu":"AMD Ryzen 9 9950X","load":"Manual overclock, all-core 5.2 GHz at 1.3 V, Cinebench R23 30-minute loop, steady state","cpu_power_w":null,"fan_setting":"100%","noise_dba":51,"cpu_temp_c":null,"temp_over_ambient_c":59},{"test_cpu":"AMD Ryzen 9 9950X","load":"Manual overclock, all-core 5.2 GHz at 1.3 V, Cinebench R23 30-minute loop, steady state","cpu_power_w":null,"fan_setting":"40 dB(A)","noise_dba":40,"cpu_temp_c":null,"temp_over_ambient_c":61},{"test_cpu":"AMD Ryzen 9 9950X","load":"Precision Boost Overdrive, Cinebench R23 30-minute loop, average package power","cpu_power_w":254,"fan_setting":null,"noise_dba":null,"cpu_temp_c":null,"temp_over_ambient_c":null}],"dimensions_mm":null,"heatsink_dimensions_mm":null,"weight_g":2370,"heatsink_weight_g":null,"in_the_box":["VRM fan module","CPU contact frame (Intel)","PWM cable (all in one)","PWM cable (individual control)","Metal flat washers","Screws","Shoulder screws (Intel)","Mounting clips set (AMD)","Spacers (AMD)","T20 driver","MX-6 thermal paste (0.8 g)"]},"variants":[{"model_number":"ACFRE00181A","gtin":"4895265000348","colors":["Black"],"launch_price_usd":148.99},{"model_number":"ACFRE00185A","gtin":"4895265000355","colors":["Black"],"rgb_lighting":true,"lighting_standard":"argb_5v","weight_g":2358,"launch_price_usd":164.99},{"model_number":"ACFRE00189A","gtin":"4895265000362","colors":["White"],"rgb_lighting":true,"lighting_standard":"argb_5v","weight_g":2358}],"sources":[{"url":"https://www.arctic.de/en/Liquid-Freezer-III-Pro-420/ACFRE00181A","kind":"manufacturer_page","accessed":"2026-10-14","fields":["manufacturer_url","model_numbers","gtins","status","colors","markets","cpu_cooler","thermal_paste","sockets","offset_mounting","radiator_mm","radiator_dimensions_mm","radiator_material","tube_length_mm","pump_speed_max_rpm","vrm_fan","fans","rgb_lighting","display_type","weight_g","warranty_years","base_material"],"notes":{"status":"The arctic.de store lists the black model ACFRE00181A with an add-to-cart button on the access date.","markets":"The arctic.de store sells in EUR incl. VAT. The US market comes from the Club386 launch report in USD.","colors":"Product information: Colour Black. The A-RGB pages list Black (ACFRE00185A) and White (ACFRE00189A).","sockets":"The product information block and the spec sheet name LGA1851, LGA1700, AM5 and AM4 under Compatibility. The shop filter line also lists Intel 115X and 1200, but the spec sheet and manual do not, so they are not stored.","offset_mounting":"Feature text: Offset Mounting for Intel and AMD shifts the cold plate to the CPU hotspot.","radiator_mm":"Product information: Radiator Size 420.","base_material":"Spec sheet: Cold Plate Copper, Micro Skived Fins. No plating is stated.","thermal_paste":"Feature text: Includes MX-6 Thermal Paste. The spec sheet lists TIM MX-6 (0.8 g). The tube is separate from the pump.","rgb_lighting":"Lighting: none. The A-RGB editions ACFRE00185A and ACFRE00189A are variant rows.","display_type":"No screen on the pump block. Lighting: none.","fans":"Radiator fans: 3x P14 Pro, 400 to 2500 rpm, 110 cfm, 5.2 mmH2O, fluid dynamic bearing, 4-pin fan plug. The page and sheet state no noise level, so noise_dba is left out. The VRM fan (400 to 2500 rpm, 0.05 A) is not in the table.","weight_g":"Spec sheet: weight 2370 g. Gross shipping weight is 2994 g.","warranty_years":"Spec sheet and product page: 6 Years. The ARCTIC warranty page says six years for the entire product range and names no market."}},{"url":"https://www.arctic.de/media/b2/dc/e3/1749041473/Spec_Sheet_Liquid_Freezer_III_Pro_420_EN.pdf","kind":"manufacturer_pdf","accessed":"2026-10-14","fields":["spec_sheet_url","gtins","model_numbers","sockets","base_material","thermal_paste","radiator_dimensions_mm","radiator_material","tube_length_mm","pump_speed_max_rpm","vrm_fan","fans","weight_g","warranty_years","variants"],"notes":{"gtins":"Shipping information: SKU ACFRE00181A, EAN 4895265000348, UPC 840033403016. The A-RGB sheet gives EAN 4895265000355 and UPC 840033403023 for ACFRE00185A, and EAN 4895265000362 and UPC 840033403030 for the white ACFRE00189A.","radiator_dimensions_mm":"General specifications: radiator dimensions 458 (L) x 138 (W) x 38 (H) mm, material aluminium.","tube_length_mm":"General specifications: tube length 500 mm, outer 12.4 mm, inner 6.0 mm. Club386 says 450 mm, which is the 360 mm model's figure, so the sheet is followed.","pump_speed_max_rpm":"Pump 800 to 2800 rpm, PWM controlled.","fans":"Radiator fan specifications as on the product page. 0.35 A at 12 V DC.","variants":"ACFRE00181A, EAN 4895265000348."}},{"url":"https://www.arctic.de/en/Liquid-Freezer-III-Pro-420-A-RGB/ACFRE00185A","kind":"manufacturer_page","accessed":"2026-10-14","fields":["variants"],"notes":{"variants":"A-RGB black edition ACFRE00185A: Lighting A-RGB, colour Black. The sheet lists 3 x P14 Pro A-RGB at 400 to 2500 rpm, 110 cfm, 5.2 mmH2O and fluid dynamic bearing, the same figures as the P14 Pro. 12x A-RGB LEDs per fan at 5 V DC with a 3-pin A-RGB plug, and 12 x A-RGB LEDs on the VRM module. Weight 2358 g against 2370 g. Same radiator and tube length."}},{"url":"https://www.arctic.de/en/Liquid-Freezer-III-Pro-420-A-RGB-White/ACFRE00189A","kind":"manufacturer_page","accessed":"2026-10-14","fields":["variants"],"notes":{"variants":"White A-RGB edition ACFRE00189A: Lighting A-RGB, colour White, same sheet and figures as ACFRE00185A (weight 2358 g)."}},{"url":"https://www.arctic.de/media/be/ab/cd/1749043600/Spec_Sheet_Liquid_Freezer_III_Pro_420_A-RGB_EN.pdf","kind":"manufacturer_pdf","accessed":"2026-10-14","fields":["variants"],"notes":{"variants":"One sheet for ACFRE00185A and ACFRE00189A: weight 2358 g, 3 x P14 Pro A-RGB, 12x A-RGB LEDs per fan at 0.40 A 5 V DC, 3-pin A-RGB plug and socket, EAN 4895265000355 and 4895265000362, UPC 840033403023 and 840033403030."}},{"url":"https://support.arctic.de/liquid-freezer-III-pro-420","kind":"manual","accessed":"2026-10-14","fields":["manual_url","pump_connector","usb_header_required","offset_mounting"],"notes":{"pump_connector":"Connect the PWM control cable: the all-in-one cable has one 4-pin plug and the individual cable has three 4-pin plugs. Headers must be set to PWM. The spec sheet shows a 4-Pin Fan Plug for the pump.","usb_header_required":"The installation steps and both quick start guides connect only PWM cables. No USB cable is supplied or mentioned.","offset_mounting":"AM4 step: the offset mounting leaves parts of the heatspreader visible because the CPU hotspot is off-centre."}},{"url":"https://support.arctic.de/products/liquid-freezer-iii-pro-420/techdocs/Quick_Manual_Intel_r1b.pdf","kind":"manual","accessed":"2026-10-14","fields":["in_the_box"],"notes":{"in_the_box":"Packaging Content on the Intel quick start guide for the Liquid Freezer III Pro series: VRM fan module, CPU contact frame, two PWM cables, metal flat washers, screws, shoulder screws, T20 driver and MX-6 (0.8 g). The guide covers all sizes and lists screw counts as x8/x12. It lists no item that only an A-RGB edition has. The AMD guide adds a mounting clips set and four spacers."}},{"url":"https://support.arctic.de/products/liquid-freezer-iii-pro-420/techdocs/Quick_Manual_AMD_r1b.pdf","kind":"manual","accessed":"2026-10-14","fields":["in_the_box","series"],"notes":{"in_the_box":"AMD quick start guide: mounting clips set x1, spacers x4, VRM fan module, two PWM cables, washers, screws and MX-6 (0.8 g).","series":"Quick start guide title: Liquid Freezer III Pro Series."}},{"url":"https://www.cybenetics.com/evaluations/coolers/97/","kind":"measurement","accessed":"2026-10-14","fields":["cybenetics_theta_am5","measured_op_30dba_am5","measured_noise_max_dba","measured_thermal_tests"],"notes":{"cybenetics_theta_am5":"Report ACCLR00097 is for the Liquid Freezer III Pro 420 A-RGB (P14 Pro A-RGB fans, 2360 g), tested Sep 19 to Oct 4, 2025. THETA Platinum, AIO, AM5, Ryzen 9 7900X, default mount, rated at 30 dB(A). The maker lists the same radiator and the same fan figures for the plain model, so the A-RGB report is used. Evaluated before Revision 2.0 under Revision 1.8. The report has no Intel LGA1851 results, so the LGA1851 fields are empty.","measured_op_30dba_am5":"Overall Performance 11,669 at 30 dB(A) on a Ryzen 9 7900X (PBO enabled).","measured_noise_max_dba":"46.7 dB(A) at the 100% fan setting (2366, 2400 and 2385 rpm). Hemi-anechoic chamber with a 6 dB(A) noise floor, Bruel & Kjaer 2270 G4 analyser with a 4955-A microphone, microphone 1 m from the cooler. The protocol keeps the AIO pump at full speed and does not separate its noise.","measured_thermal_tests":"Cybenetics Cooling Solutions Test Protocol, A-RGB edition, AM5 platform only. Ambient 25 C plus or minus 0.5 C and 30% humidity in a climate chamber, open Cooler Master Test Bench, Prime95 Small FFTs, averages of the last 4 minutes, Arctic MX-4 paste for all tests (protocol PDF), Default mount, pump at full speed. CPU power at the EPS connectors. The report does not publish a temperature above ambient. Fans reach 46.7 dB(A) at 100%."}},{"url":"https://www.cybenetics.com/data/Cybenetics%20Cooling%20Solutions%20Test%20Protocol_en.pdf","kind":"measurement","accessed":"2026-10-14","fields":["measured_thermal_tests"],"notes":{"measured_thermal_tests":"Test Protocol Revision 2.2: Prime95 Small FFTs for at least 10 minutes per level, values averaged over the last 4 minutes, ambient 25 C plus or minus 0.5 C, humidity 30%, Arctic MX-4 for all tests, one mount per platform, AMD test system Ryzen 9 7900X with PBO enabled. This cooler was tested under the older Revision 1.8 procedure."}},{"url":"https://www.kitguru.net/components/cooling/james-dawson/arctic-liquid-freezer-iii-pro-420-aio-cpu-cooler-review/all/1/","kind":"review_site","accessed":"2026-10-14","fields":["measured_thermal_tests","release_date","tube_length_mm"],"notes":{"measured_thermal_tests":"James Dawson, review of 2025-08-20. AMD Ryzen 9 9950X on an ASRock X870E Nova WiFi, open test bench, Arctic MX-6 paste, Windows 11 24H2, ambient held at 19 to 21 C, at least two fresh installs. Manual overclock: all-core 5.2 GHz at 1.3 V, 30-minute Cinebench R23 loop, steady state. Row 1: fans at 100%, 51 dBA, 59 C over ambient. Row 2: fans locked to 40 dBA (almost 1600 rpm), 61 C over ambient. Row 3: Precision Boost Overdrive, the cooler held 254 W package power, and the fan setting is not stated. The charts give no other numbers. The noise distance is not stated.","release_date":"Review published 2025-08-20 for the Liquid Freezer III Pro 420 (black, no lighting mentioned).","tube_length_mm":"Specifications list: radiator tube length 500mm."}},{"url":"https://www.club386.com/arctic-launches-liquid-freezer-iii-pro-in-280mm-and-420mm-flavours/","kind":"press","accessed":"2026-10-14","fields":["release_date","announce_date","launch_price_usd","markets","variants"],"notes":{"release_date":"Article of 2025-07-09: the 280 and 420 models are launching, black variants first.","announce_date":"Date of the Club386 launch article. ARCTIC's own release could not be opened.","launch_price_usd":"Price table: Liquid Freezer III Pro 420 regular price $148.99 with a launch discount to $98.49. The regular price is stored, not the discounted one. 3DTested also lists an MSRP of $148.99 but could not be opened.","markets":"USD launch prices point to the US market.","variants":"Price table: Liquid Freezer III Pro 420 A-RGB regular price $164.99 (discounted $107.99). White colourway pricing was to follow, so the white edition has no price."}}],"fields_filled":35,"updated":"2026-10-16"},"meta":{"api_version":"1","docs":"https://arkivo.dev/api"}}