CPU coolers / Compare

ARCTIC Liquid Freezer III Pro 420 vs ASUS ROG Ryuo IV SLC 360 ARGB

A

Product A: ARCTIC

Liquid Freezer III Pro 420

35 of 54 known

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B

Product B: ASUS

ROG Ryuo IV SLC 360 ARGB

30 of 54 known

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Every value links to where we found it.

Only differences

AARCTIC Liquid Freezer III Pro 420

BASUS ROG Ryuo IV SLC 360 ARGB

General

6 of 12 differ

Series

Liquid Freezer III Pro8Owner's manualsupport.arctic.de/products/liquid-freezer-iii-pro-420/techdocs/Quick_Manual_AMD_r1b.pdfRead 14 October 2026Quick start guide title: Liquid Freezer III Pro Series.

ROG Ryuo IV1Maker product pagerog.asus.com/us/cooling/cpu-liquid-coolers/rog-ryuo/rog-ryuo-iv-slc-360-argb/specRead 15 October 2026The Note block names the ROG RYUO Series. The generation IV is in the product name, so the series is stored as ROG Ryuo IV.

Model numbersiMaker identifiers for this exact model and its listed variants. Excludes sibling models and other generations.

ACFRE00181A, ACFRE00185A, ACFRE00189A1Maker product pagearctic.de/en/Liquid-Freezer-III-Pro-420/ACFRE00181ARead 14 October 20262Maker spec sheet (PDF)arctic.de/media/b2/dc/e3/1749041473/Spec_Sheet_Liquid_Freezer_III_Pro_420_EN.pdfRead 14 October 2026

90RC0151-B0EAY0, 90RC0151-B0AAY0, 90RC0152-B0EAY03Maker product pageeshop.asus.com/us/90rc0151-b0aay0-rog-ryuo-iv-slc-360-argb.htmlRead 15 October 2026Part Number 90RC0151-B0AAY0, the US eShop code for the black edition.5Retailer pagedirectcomputers.co.uk/products/asus-rog-ryuo-iv-slc-360-argb-liquid-cpu-cooler-movable-6-67-curved-amoled-display-shortened-tubing-daisy-chained-argb-fansRead 15 October 2026SKU 90RC0151-B0EAY0.6Retailer pagedirectcomputers.co.uk/products/asus-rog-ryuo-iv-slc-360-argb-white-edition-liquid-cpu-cooler-movable-6-67-curved-amoled-display-shortened-tubing-daisy-chained-argb-fansRead 15 October 2026SKU 90RC0152-B0EAY0 for the White Edition.

GTIN / EAN

4895265000348, 840033403016, 4895265000355, 840033403023, 4895265000362, 8400334030301Maker product pagearctic.de/en/Liquid-Freezer-III-Pro-420/ACFRE00181ARead 14 October 20262Maker spec sheet (PDF)arctic.de/media/b2/dc/e3/1749041473/Spec_Sheet_Liquid_Freezer_III_Pro_420_EN.pdfRead 14 October 2026Shipping 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.

47113878506575Retailer pagedirectcomputers.co.uk/products/asus-rog-ryuo-iv-slc-360-argb-liquid-cpu-cooler-movable-6-67-curved-amoled-display-shortened-tubing-daisy-chained-argb-fansRead 15 October 2026Barcode 4711387850657. WaterCoolingUK prints the same EAN for MPN 90RC0151-B0EAY0.7Retailer pagewatercoolinguk.co.uk/product/asus-rog-ryuo-iv-slc-360-argb-aio-water-cooling-360mm-blackRead 15 October 2026MPN 90RC0151-B0EAY0, EAN 4711387850657.

AnnouncediThe maker's first announcement of this model. This is separate from first retail availability.

9 July 202512Press articleclub386.com/arctic-launches-liquid-freezer-iii-pro-in-280mm-and-420mm-flavoursRead 14 October 2026Date of the Club386 launch article. ARCTIC's own release could not be opened.

Not available

Status

Available1Maker product pagearctic.de/en/Liquid-Freezer-III-Pro-420/ACFRE00181ARead 14 October 2026The arctic.de store lists the black model ACFRE00181A with an add-to-cart button on the access date.

Available1Maker product pagerog.asus.com/us/cooling/cpu-liquid-coolers/rog-ryuo/rog-ryuo-iv-slc-360-argb/specRead 15 October 2026The ROG page is live with a buy button. ASUS UK and US stores list a price and retailers list it as in stock. One UK shop marks its black listing as end of life.9Reviewallround-pc.com/artikel/kuehlung/asus-rog-ryuo-iv-slc-360-argb-im-test-wasserkuehlung-mit-mega-display-und-mega-kuehlleistungRead 15 October 2026In regular retail sale at about 350 euros in September 2025.

PredecessoriThe model this one directly replaced, in the same line, tier and size, as the maker or a trusted review names it.

Not available

Not available

SuccessoriThe model that directly replaced this one, in the same line, tier and size. A revision such as a Slim or OLED model does not count when a next generation exists.

Not available

Not available

Launch price (US)iThe maker's US launch MSRP for the stated configuration, excluding tax. Current store prices and later discounts do not qualify.

$148.9912Press articleclub386.com/arctic-launches-liquid-freezer-iii-pro-in-280mm-and-420mm-flavoursRead 14 October 2026Price 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.

Not available

Launch price (EU)iThe maker's euro launch price for the stated configuration, including VAT as published. Current store prices and later discounts do not qualify.

Not available

€4299Reviewallround-pc.com/artikel/kuehlung/asus-rog-ryuo-iv-slc-360-argb-im-test-wasserkuehlung-mit-mega-display-und-mega-kuehlleistungRead 15 October 2026At launch 429 euros were asked. The review calls the UVP 429 euros and its price widget shows 429,99 euros UVP. The 429 in the text is stored. No USD launch price was found, since the US price on ASUS pages is undated.

MarketsiISO country or region codes where this exact model or variant is sold. A source page's language does not establish availability.

US, EU1Maker product pagearctic.de/en/Liquid-Freezer-III-Pro-420/ACFRE00181ARead 14 October 2026The arctic.de store sells in EUR incl. VAT. The US market comes from the Club386 launch report in USD.12Press articleclub386.com/arctic-launches-liquid-freezer-iii-pro-in-280mm-and-420mm-flavoursRead 14 October 2026USD launch prices point to the US market.

Not available

ColoursiThe maker's own colour names

Black, White1Maker product pagearctic.de/en/Liquid-Freezer-III-Pro-420/ACFRE00181ARead 14 October 2026Product information: Colour Black. The A-RGB pages list Black (ACFRE00185A) and White (ACFRE00189A).

Black, White1Maker product pagerog.asus.com/us/cooling/cpu-liquid-coolers/rog-ryuo/rog-ryuo-iv-slc-360-argb/specRead 15 October 2026The black edition is the page named ROG Ryuo IV SLC 360 ARGB. The white one has its own ROG page.4Maker product pagerog.asus.com/us/cooling/cpu-liquid-coolers/rog-ryuo/rog-ryuo-iv-slc-360-argb-white-edition/specRead 15 October 2026White Edition.5Retailer pagedirectcomputers.co.uk/products/asus-rog-ryuo-iv-slc-360-argb-liquid-cpu-cooler-movable-6-67-curved-amoled-display-shortened-tubing-daisy-chained-argb-fansRead 15 October 2026Product colour: Black. The listing's distributor weight row says 1.56 kg and a package weight of 3.64 kg. Those are not used. The scope of the 1.56 kg is not stated and Basic-Tutorials gives 2.27 kg with fans.6Retailer pagedirectcomputers.co.uk/products/asus-rog-ryuo-iv-slc-360-argb-white-edition-liquid-cpu-cooler-movable-6-67-curved-amoled-display-shortened-tubing-daisy-chained-argb-fansRead 15 October 2026Product colour: White.

Cooler typeiAir is a heatsink with fans that sits on the CPU. AIO liquid is a sealed all-in-one liquid cooler with a pump block, tubes and a radiator.

AIO liquid1Maker product pagearctic.de/en/Liquid-Freezer-III-Pro-420/ACFRE00181ARead 14 October 2026

AIO liquid1Maker product pagerog.asus.com/us/cooling/cpu-liquid-coolers/rog-ryuo/rog-ryuo-iv-slc-360-argb/specRead 15 October 2026Tech specs list a water block, a pump, a radiator, a sleeved FEP tube and three fans, so a sealed AIO liquid cooler.

Air cooler layoutiAir coolers only. Top-flow covers low-profile coolers whose fan blows down onto the board.

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Not available

Rated TDP (claimed)iThe heat load the maker says the cooler handles. Makers do not share one test method, so this is not a measured result. A maker's maximum heat dissipation power counts. Check the maker's CPU compatibility page too.

Not available

Not available

Base materialiThe surface that touches the CPU: the heatsink base or the AIO cold plate. Plating counts, so nickel-plated copper is not copper. Direct-touch heat pipes are the contact surface, so they count as copper unless plating is stated. The direct-contact heat pipes field records the design.

Copper1Maker product pagearctic.de/en/Liquid-Freezer-III-Pro-420/ACFRE00181ARead 14 October 2026Spec sheet: Cold Plate Copper, Micro Skived Fins. No plating is stated.2Maker spec sheet (PDF)arctic.de/media/b2/dc/e3/1749041473/Spec_Sheet_Liquid_Freezer_III_Pro_420_EN.pdfRead 14 October 2026

Copper1Maker product pagerog.asus.com/us/cooling/cpu-liquid-coolers/rog-ryuo/rog-ryuo-iv-slc-360-argb/specRead 15 October 2026Water block: Block Material (CPU Plate): Copper. No plating is stated.

Thermal pasteiPre-applied means paste is already on the base or cold plate. Included means a separate tube or syringe in the box.

Included1Maker product pagearctic.de/en/Liquid-Freezer-III-Pro-420/ACFRE00181ARead 14 October 2026Feature text: Includes MX-6 Thermal Paste. The spec sheet lists TIM MX-6 (0.8 g). The tube is separate from the pump.2Maker spec sheet (PDF)arctic.de/media/b2/dc/e3/1749041473/Spec_Sheet_Liquid_Freezer_III_Pro_420_EN.pdfRead 14 October 2026

Pre-applied1Maker product pagerog.asus.com/us/cooling/cpu-liquid-coolers/rog-ryuo/rog-ryuo-iv-slc-360-argb/specRead 15 October 2026Package content: 1 x CPU Liquid Cooler (pre-applied thermal compound). The reviews show the paste as a ROG logo on the cold plate.2Maker product pagerog.asus.com/us/cooling/cpu-liquid-coolers/rog-ryuo/rog-ryuo-iv-slc-360-argbRead 15 October 2026The features page lists pre-applied thermal paste next to the pump.

Compatibility

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CPU socketsiSockets the maker lists as supported in its spec table, compatibility list or guide, written as cpu_socket writes them, e.g. AM5 or LGA1851. List each socket on its own, so LGA115x becomes LGA1150, LGA1151, LGA1155 and LGA1156. When the maker names the sockets of such a family, list only the ones it names. A socket that needs a separately sold or requested mounting kit is left out. A new socket that the maker lists with no extra kit counts. LGA2011-v3 and 2011(V3) are written LGA2011-3. Threadripper sockets use AMD's names, so TR4 is written sTR4 and TR5 is written sTR5. sTRX4 and sWRX8 are sockets of their own.

AM5, AM4, LGA1851, LGA17001Maker product pagearctic.de/en/Liquid-Freezer-III-Pro-420/ACFRE00181ARead 14 October 2026The 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.2Maker spec sheet (PDF)arctic.de/media/b2/dc/e3/1749041473/Spec_Sheet_Liquid_Freezer_III_Pro_420_EN.pdfRead 14 October 2026

AM5, AM4, LGA1851, LGA17001Maker product pagerog.asus.com/us/cooling/cpu-liquid-coolers/rog-ryuo/rog-ryuo-iv-slc-360-argb/specRead 15 October 2026Compatibility: AMD AM5, AM4. Intel LGA 1851, 1700. The ASUS chassis list says third-party cases must support 420 mm radiators.

RAM height clearanceiAir coolers only. The tallest memory module that fits under the cooler with all included fans in their standard position. When the maker gives different values per socket, store the lowest and name the others in the source note. A heatsink that does not reach over the memory slots has no height limit, so the field is left out and the maker's statement goes in the source note.

Not available

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Offset mountingiThe included mount can shift the base or cold plate off the socket centre, for example toward the AM5 hotspot. An asymmetric heatsink on a centred base does not count.

Yes1Maker product pagearctic.de/en/Liquid-Freezer-III-Pro-420/ACFRE00181ARead 14 October 2026Feature text: Offset Mounting for Intel and AMD shifts the cold plate to the CPU hotspot.6Owner's manualsupport.arctic.de/liquid-freezer-III-pro-420Read 14 October 2026AM4 step: the offset mounting leaves parts of the heatspreader visible because the CPU hotspot is off-centre.

Not available

Heatsink

None of 3 known

Heat pipesiAir coolers only. Number of heat pipes. A U-shaped pipe with two ends in the fins counts as one. A T-shaped pipe with three ends, such as Cooler Master's 3DHP, also counts as one. The maker's count wins over a review or Cybenetics count.

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Heat pipe diameteriAir coolers only. Outer diameter, such as 6 or 8.

Not available

Not available

Direct-contact heat pipesiAir coolers only. The heat pipes touch the CPU directly instead of sitting in a solid base plate.

Not available

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Liquid cooling

5 of 7 differ

Radiator sizeiAIO coolers only. The nominal size class from the fan positions, such as 240, 280, 360 or 420.

420mm1Maker product pagearctic.de/en/Liquid-Freezer-III-Pro-420/ACFRE00181ARead 14 October 2026Product information: Radiator Size 420.

360mm1Maker product pagerog.asus.com/us/cooling/cpu-liquid-coolers/rog-ryuo/rog-ryuo-iv-slc-360-argb/specRead 15 October 2026Three 120 mm fan slots, so the size class is 360.

Radiator dimensionsiRadiator without fans. Length runs along the row of fans. Width runs across it. Thickness is the depth the airflow passes through, such as 27 or 38.

Length458Width138Thickness38mm(18 × 5.4 × 1.5 in)1Maker product pagearctic.de/en/Liquid-Freezer-III-Pro-420/ACFRE00181ARead 14 October 20262Maker spec sheet (PDF)arctic.de/media/b2/dc/e3/1749041473/Spec_Sheet_Liquid_Freezer_III_Pro_420_EN.pdfRead 14 October 2026General specifications: radiator dimensions 458 (L) x 138 (W) x 38 (H) mm, material aluminium.

Length394Width140Thickness32mm(15.5 × 5.5 × 1.3 in)1Maker product pagerog.asus.com/us/cooling/cpu-liquid-coolers/rog-ryuo/rog-ryuo-iv-slc-360-argb/specRead 15 October 2026Radiator Dimension: 394 x 140 x 32 mm, aluminum. Reviews describe the radiator as wider and thicker than a usual 360 mm one and measure the same figures.

Radiator material

Aluminium1Maker product pagearctic.de/en/Liquid-Freezer-III-Pro-420/ACFRE00181ARead 14 October 20262Maker spec sheet (PDF)arctic.de/media/b2/dc/e3/1749041473/Spec_Sheet_Liquid_Freezer_III_Pro_420_EN.pdfRead 14 October 2026

Aluminium1Maker product pagerog.asus.com/us/cooling/cpu-liquid-coolers/rog-ryuo/rog-ryuo-iv-slc-360-argb/specRead 15 October 2026Radiator Material: Aluminum.

Tube lengthiLength of each tube between the pump block and the radiator, as published. When the two tubes differ, the shorter is stored and the other goes in the source note.

500mm1Maker product pagearctic.de/en/Liquid-Freezer-III-Pro-420/ACFRE00181ARead 14 October 20262Maker spec sheet (PDF)arctic.de/media/b2/dc/e3/1749041473/Spec_Sheet_Liquid_Freezer_III_Pro_420_EN.pdfRead 14 October 2026General 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.11Reviewkitguru.net/components/cooling/james-dawson/arctic-liquid-freezer-iii-pro-420-aio-cpu-cooler-review/all/1Read 14 October 2026Specifications list: radiator tube length 500mm.

200mm1Maker product pagerog.asus.com/us/cooling/cpu-liquid-coolers/rog-ryuo/rog-ryuo-iv-slc-360-argb/specRead 15 October 2026Tube: Sleeved FEP tube, Tube Length: 200 mm. Both tubes leave the middle of the radiator.2Maker product pagerog.asus.com/us/cooling/cpu-liquid-coolers/rog-ryuo/rog-ryuo-iv-slc-360-argbRead 15 October 2026The shorter 200mm tubing with a centred tube layout.9Reviewallround-pc.com/artikel/kuehlung/asus-rog-ryuo-iv-slc-360-argb-im-test-wasserkuehlung-mit-mega-display-und-mega-kuehlleistungRead 15 October 2026200 mm tubes, so the radiator fits only in the case roof.

Max pump speediHighest rated pump speed. When the maker gives a range, this is its top.

2,800rpm1Maker product pagearctic.de/en/Liquid-Freezer-III-Pro-420/ACFRE00181ARead 14 October 20262Maker spec sheet (PDF)arctic.de/media/b2/dc/e3/1749041473/Spec_Sheet_Liquid_Freezer_III_Pro_420_EN.pdfRead 14 October 2026Pump 800 to 2800 rpm, PWM controlled.

3,200rpm1Maker product pagerog.asus.com/us/cooling/cpu-liquid-coolers/rog-ryuo/rog-ryuo-iv-slc-360-argb/specRead 15 October 2026Pump Motor Speed: 1800 - 3200 +/- 10% RPM. Basic-Tutorials measured 1900 to 3100 rpm.9Reviewallround-pc.com/artikel/kuehlung/asus-rog-ryuo-iv-slc-360-argb-im-test-wasserkuehlung-mit-mega-display-und-mega-kuehlleistungRead 15 October 2026Pump 1800 to 3200 rpm.

Pump power connectoriHow the pump gets power. A pump wired through a supplied hub or cable uses the plug at the motherboard or PSU end. A pump powered from SATA with a separate 3-pin speed lead is SATA power.

4-pin PWM fan header6Owner's manualsupport.arctic.de/liquid-freezer-III-pro-420Read 14 October 2026Connect 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.

4-pin PWM fan header8Reviewbasic-tutorials.de/tests/pc-hardware/asus-rog-ryuo-iv-slc-360-argbRead 15 October 2026Technical details, Anschluss (Pumpe): 4-Pin PWM. The text says the pump plugs into the board with a 4-pin PWM connector.10Reviewbug.hr/recenzije/asus-rog-ryuo-iv-slc-360-argb-vrlo-posebna-vodenjaca-53728Read 15 October 2026The block goes to the 4-pin header made for the water pump.

VRM faniA small fan on the pump block that blows over the motherboard voltage regulators.

Yes1Maker product pagearctic.de/en/Liquid-Freezer-III-Pro-420/ACFRE00181ARead 14 October 20262Maker spec sheet (PDF)arctic.de/media/b2/dc/e3/1749041473/Spec_Sheet_Liquid_Freezer_III_Pro_420_EN.pdfRead 14 October 2026

Not available

Fans

1 of 2 differ

Included fansiFans in the box that cool the heatsink or radiator, one row per fan model. A VRM fan on the pump block is left out. Speed, airflow, pressure and noise are the maker's figures for one fan at full speed, in the fastest mode and without a low-noise adapter. When a range is published, the top of the range is stored. Count is the number of rotors, so a unified frame with three 120 mm rotors counts 3 with size 120. Min speed is the lowest speed while spinning. A zero RPM stop is not stored. FDB and S-FDB are fluid dynamic. HDB is hydrodynamic. Cooler Master's Loop Dynamic Bearing is loop dynamic. If the maker gives airflow only in m³/h, convert with 1 m³/h = 0.5886 CFM, round to one decimal and say so in the source note. Connector is the fan's power lead. A separate lighting lead is not counted, and a maker cable or adapter in the box that ends in a 4-pin PWM plug counts as 4-pin PWM, even when the fan's own lead is proprietary. For an air cooler with one fan, the maker's noise figure for the cooler is the fan noise. A figure the maker does not label per fan or in total counts as per fan. When a maker table prints noise for the whole cooler with no per-fan label and the maker's own data sheet for the same fan gives a figure, the fan data sheet figure is stored.

AARCTIC Liquid Freezer III Pro 420

Model	Size (mm)	Fans	Min speed (rpm)	Max speed (rpm)	Airflow (CFM)	Static pressure (mmH₂O)	Bearing	Connector
P14 Pro	140	3	400	2,500	110	5.2	Fluid dynamic (FDB)	4-pin PWM

Source1Maker product pagearctic.de/en/Liquid-Freezer-III-Pro-420/ACFRE00181ARead 14 October 2026Radiator 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.2Maker spec sheet (PDF)arctic.de/media/b2/dc/e3/1749041473/Spec_Sheet_Liquid_Freezer_III_Pro_420_EN.pdfRead 14 October 2026Radiator fan specifications as on the product page. 0.35 A at 12 V DC.

BASUS ROG Ryuo IV SLC 360 ARGB

Model	Size (mm)	Fans	Min speed (rpm)	Max speed (rpm)	Airflow (CFM)	Static pressure (mmH₂O)	Noise (claimed) (dB(A))	Bearing	Connector
ROG RYUO IV MF-12C ARGB	120	3	800	2,650	71.44	5.45	39.6	Fluid dynamic (FDB)	4-pin PWM

Source1Maker product pagerog.asus.com/us/cooling/cpu-liquid-coolers/rog-ryuo/rog-ryuo-iv-slc-360-argb/specRead 15 October 2026Fan ROG RYUO IV MF-12C ARGB, 3 x 120 mm, 120 x 120 x 25 mm, Speed 800-2650 +/- 10% RPM, Static Pressure 5.45 mmH2O, Air Flow 71.44 CFM, Noise 39.6 dB(A), Control Mode PWM/DC. The figures are per fan. The bearing and the plug are in the Basic-Tutorials entry.8Reviewbasic-tutorials.de/tests/pc-hardware/asus-rog-ryuo-iv-slc-360-argbRead 15 October 2026ROG RYUO IV MF-12C ARGB, Lagertyp: hydrodynamisches Gleitlager (FDB), 800 to 2650 rpm, 121.38 m3/h (71.44 CFM), 5.45 mm H2O, 39.6 dB(A). All three fans are clipped together with contacts and need one 4-pin PWM plug and one 3-pin 5 V ARGB plug.9Reviewallround-pc.com/artikel/kuehlung/asus-rog-ryuo-iv-slc-360-argb-im-test-wasserkuehlung-mit-mega-display-und-mega-kuehlleistungRead 15 October 2026Fans MF-12C ARGB at 800 to 2650 rpm, 5.45 mmH2O, 71.44 CFM, 39.6 dB(A). The test sample reached the stated speeds.

FansiNumber of included heatsink or radiator fans.

3=CalculatedFrom Included fans

3=CalculatedFrom Included fans

Display and lighting

6 of 7 differ

RGB lightingiLighting on the fans, the heatsink or the pump block.

No1Maker product pagearctic.de/en/Liquid-Freezer-III-Pro-420/ACFRE00181ARead 14 October 2026Lighting: none. The A-RGB editions ACFRE00185A and ACFRE00189A are variant rows.

Yes1Maker product pagerog.asus.com/us/cooling/cpu-liquid-coolers/rog-ryuo/rog-ryuo-iv-slc-360-argb/specRead 15 October 2026ARGB fans, AURA Sync Support: Yes.2Maker product pagerog.asus.com/us/cooling/cpu-liquid-coolers/rog-ryuo/rog-ryuo-iv-slc-360-argbRead 15 October 2026Daisy-chained ARGB fans with Aura Fan Edge side lighting.8Reviewbasic-tutorials.de/tests/pc-hardware/asus-rog-ryuo-iv-slc-360-argbRead 15 October 2026Three fans with eight ARGB LEDs each.

Lighting standardiThe named lighting connection. ARGB lighting alone does not prove a 5 V header. Proprietary means the maker's own hub or cable system.

Not available

ARGB 5 V8Reviewbasic-tutorials.de/tests/pc-hardware/asus-rog-ryuo-iv-slc-360-argbRead 15 October 2026Anschluss (LED): 3-Pin 5V (ARGB), eight addressable LEDs per fan. Lighting worked through Armoury Crate and OpenRGB.10Reviewbug.hr/recenzije/asus-rog-ryuo-iv-slc-360-argb-vrlo-posebna-vodenjaca-53728Read 15 October 2026The fans use one 4-pin power header and one 3-pin ARGB connector.

Built-in screeniA screen on the pump block or the heatsink. LCD and OLED screens show images. A segment readout shows digits only, such as the CPU temperature.

None1Maker product pagearctic.de/en/Liquid-Freezer-III-Pro-420/ACFRE00181ARead 14 October 2026No screen on the pump block. Lighting: none.

OLED1Maker product pagerog.asus.com/us/cooling/cpu-liquid-coolers/rog-ryuo/rog-ryuo-iv-slc-360-argb/specRead 15 October 2026Special Features, Display: 6.67" AMOLED. AMOLED is stored as OLED.2Maker product pagerog.asus.com/us/cooling/cpu-liquid-coolers/rog-ryuo/rog-ryuo-iv-slc-360-argbRead 15 October 2026Features page: 6.67-inch curved 2K AMOLED display, shown through ASUS InfoHub. The pixel size is not stated. HardwarePremium prints 2560 x 1440, but its spec table also prints fan figures (2800 rpm, 89.73 CFM, 5.15 mmH2O, 36 dBA) that belong to the ROG Ryujin III fans, so no resolution is stored. Guru3D prints 2800 rpm too.8Reviewbasic-tutorials.de/tests/pc-hardware/asus-rog-ryuo-iv-slc-360-argbRead 15 October 20266.67-inch 2K AMOLED, 60 Hz, curved, magnetic mount.9Reviewallround-pc.com/artikel/kuehlung/asus-rog-ryuo-iv-slc-360-argb-im-test-wasserkuehlung-mit-mega-display-und-mega-kuehlleistungRead 15 October 20266.67-inch curved AMOLED, 2K, 60 Hz, internal USB 2.0 connection, ASUS InfoHub.10Reviewbug.hr/recenzije/asus-rog-ryuo-iv-slc-360-argb-vrlo-posebna-vodenjaca-53728Read 15 October 20266.67-inch curved AMOLED, 2K, 60 Hz. Their test also measured about 2800 rpm on the fans against 2650 rpm stated.

Screen sizeiDiagonal of the built-in screen.

Not available

6.67in(16.9 cm)1Maker product pagerog.asus.com/us/cooling/cpu-liquid-coolers/rog-ryuo/rog-ryuo-iv-slc-360-argb/specRead 15 October 2026Display: 6.67" AMOLED.2Maker product pagerog.asus.com/us/cooling/cpu-liquid-coolers/rog-ryuo/rog-ryuo-iv-slc-360-argbRead 15 October 20266.67-Inch curved AMOLED.

Screen resolution

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SoftwareiThe maker's software for lighting, the screen or the pump. Software that works with the cooler out of the box. Software that needs a separately sold controller is left out.

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ASUS InfoHub1Maker product pagerog.asus.com/us/cooling/cpu-liquid-coolers/rog-ryuo/rog-ryuo-iv-slc-360-argb/specRead 15 October 2026Note: Software: ASUS InfoHub.

Needs a USB headeriThe cooler needs an internal USB 2.0 header on the motherboard for software control, sensors or the screen. A wireless receiver that plugs into any USB port does not count.

No6Owner's manualsupport.arctic.de/liquid-freezer-III-pro-420Read 14 October 2026The installation steps and both quick start guides connect only PWM cables. No USB cable is supplied or mentioned.

Yes8Reviewbasic-tutorials.de/tests/pc-hardware/asus-rog-ryuo-iv-slc-360-argbRead 15 October 2026Display connection: USB 2.0 intern. The display connects over an internal USB 2.0 header and is set up only in ASUS InfoHub.9Reviewallround-pc.com/artikel/kuehlung/asus-rog-ryuo-iv-slc-360-argb-im-test-wasserkuehlung-mit-mega-display-und-mega-kuehlleistungRead 15 October 2026The display connects through a USB 2.0 port.10Reviewbug.hr/recenzije/asus-rog-ryuo-iv-slc-360-argb-vrlo-posebna-vodenjaca-53728Read 15 October 2026The display connects to an internal USB 2.0 header.

Measured

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Cybenetics THETA, AMD AM5iThe THETA level for this cooler's class on the Cybenetics AMD AM5 platform with a Ryzen 9 7900X. It is rated at 30 dB(A) normalized noise, or at 25 dB(A) for a cooler that cannot reach 30 dB(A). No level means tested without a level. A cooler that Cybenetics did not test on this platform is left out. A report with a heading for this platform but no results counts as not tested.

Platinum9Measurementcybenetics.com/evaluations/coolers/97Read 14 October 2026Report 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.

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Cybenetics THETA, Intel LGA1851iThe same rating on the Cybenetics Intel LGA1851 platform with a Core Ultra 9 285K. A cooler that Cybenetics did not test on this platform is left out. A report with a heading for this platform but no results counts as not tested.

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Overall performance at 30 dB(A), AM5 (measured)iThe Cybenetics Overall Performance score at 30 dB(A) normalized noise on the AMD AM5 platform. It is average CPU power times average CPU frequency divided by average CPU temperature. Higher is better. A cooler rated only at 25 dB(A) has no value here.

11,6699Measurementcybenetics.com/evaluations/coolers/97Read 14 October 2026Overall Performance 11,669 at 30 dB(A) on a Ryzen 9 7900X (PBO enabled).

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Overall performance at 30 dB(A), LGA1851 (measured)iThe same score on the Cybenetics Intel LGA1851 platform. Scores from the two platforms are not comparable with each other.

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Noise at 100% fan setting (Cybenetics)iThe Cybenetics noise at the 100% fan setting, measured 1 m from the cooler in a hemi-anechoic chamber, with the pump of an AIO at full speed. Other reviewers' noise goes in the thermal test rows.

46.7dB(A)9Measurementcybenetics.com/evaluations/coolers/97Read 14 October 202646.7 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.

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Thermal tests (measured)iReviewer results, one row per test condition. Rows compare only when the test CPU, load, power and noise level match. The source note names the reviewer, ambient temperature, case or open bench, and thermal paste. Test CPU is the CPU name only, such as AMD Ryzen 9 7900X. The power limit and mode go in the load. Above ambient is stored only when the reviewer publishes it, never computed from the ambient.

AARCTIC Liquid Freezer III Pro 420

Test CPU	Load	CPU power (W)	Fan setting	Noise (dB(A))	CPU temperature (°C)	Above ambient (°C)
AMD Ryzen 9 7900X	Prime95 Small FFTs, full CPU load, PBO enabled	198.9	20 dB(A)	20	92.5	Not available
AMD Ryzen 9 7900X	Prime95 Small FFTs, full CPU load, PBO enabled	202.1	25 dB(A)	25	90.9	Not available
AMD Ryzen 9 7900X	Prime95 Small FFTs, full CPU load, PBO enabled	201.5	30 dB(A)	30	90.2	Not available
AMD Ryzen 9 7900X	Prime95 Small FFTs, full CPU load, PBO enabled	203.4	35 dB(A)	35	89.9	Not available
AMD Ryzen 9 7900X	Prime95 Small FFTs, full CPU load, PBO enabled	204.1	40 dB(A)	40	88.7	Not available
AMD Ryzen 9 7900X	Prime95 Small FFTs, full CPU load, PBO enabled	204.8	100%	46.7	88.7	Not available
AMD Ryzen 9 9950X	Manual overclock, all-core 5.2 GHz at 1.3 V, Cinebench R23 30-minute loop, steady state	Not available	100%	51	Not available	59
AMD Ryzen 9 9950X	Manual overclock, all-core 5.2 GHz at 1.3 V, Cinebench R23 30-minute loop, steady state	Not available	40 dB(A)	40	Not available	61
AMD Ryzen 9 9950X	Precision Boost Overdrive, Cinebench R23 30-minute loop, average package power	254	Not available	Not available	Not available	Not available

Source9Measurementcybenetics.com/evaluations/coolers/97Read 14 October 2026Cybenetics 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%.10Measurementcybenetics.com/data/Cybenetics%20Cooling%20Solutions%20Test%20Protocol_en.pdfRead 14 October 2026Test 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.11Reviewkitguru.net/components/cooling/james-dawson/arctic-liquid-freezer-iii-pro-420-aio-cpu-cooler-review/all/1Read 14 October 2026James 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.

BASUS ROG Ryuo IV SLC 360 ARGB

Test CPU	Load	Fan setting	CPU temperature (°C)
AMD Ryzen 5 1400	Prime95 Small FFTs, 30 minutes, overclocked to 3.8 GHz at 1.175 V	Minimum speed	55.8
AMD Ryzen 5 1400	Prime95 Small FFTs, 30 minutes, overclocked to 3.8 GHz at 1.175 V	50% PWM (fans and pump)	46.1
AMD Ryzen 5 1400	Prime95 Small FFTs, 30 minutes, overclocked to 3.8 GHz at 1.175 V	100% PWM (fans and pump)	43.8
Intel Core i7-13700K	Prime95 Small FFTs, 30 minutes	1000 rpm	63
Intel Core i7-13700K	Prime95 Small FFTs, 30 minutes	Maximum fan speed	56

Source8Reviewbasic-tutorials.de/tests/pc-hardware/asus-rog-ryuo-iv-slc-360-argbRead 15 October 2026Basic-Tutorials (Jonas, 2025-06-25). Open bench table. AMD Ryzen 5 1400 at 3.8 GHz and 1.175 V, MSI B350 PC-Mate. Prime95 Small FFTs for 30 minutes, CPUID Hardware Monitor, room about 20 C. The review prints the maximum temperatures 55.8 C (minimum speed), 46.1 C (50% PWM for fans and pump) and 43.8 C (100% PWM for fans and pump). The fan speeds of those rows are not published in the text. Pre-applied paste was used. The review gives no noise figure and no CPU power.9Reviewallround-pc.com/artikel/kuehlung/asus-rog-ryuo-iv-slc-360-argb-im-test-wasserkuehlung-mit-mega-display-und-mega-kuehlleistungRead 15 October 2026Allround-PC (Arian Krasniqi, 2025-09-29). Room kept at 21 C by air conditioning, 20 minute warm-up, Prime95 Small FFTs for 30 minutes, HWiNFO. The review prints 63 C for the Intel Core i7-13700K at a fixed 1000 rpm and 56 C at maximum fan speed. How the median and maximum values are combined is not clear. Case or bench, paste and noise are not stated.

Dimensions and weight

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DimensionsiAir coolers only. The cooler with its included fans in the standard position, without the mounting kit. Height runs from the bottom of the base to the top. Depth runs along the airflow, fans included. Width runs across the fins. Map by direction, not by letter. Width runs across the fins, depth runs along the airflow. DeepCool's 129 x 138 x 160 mm (L x W x H) is width 129, depth 138, height 160.

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Heatsink dimensionsiAir coolers only. The heatsink without fans, as the maker lists it. Map by direction, not by letter. Width runs across the fins, depth runs along the airflow. DeepCool's 129 x 138 x 160 mm (L x W x H) is width 129, depth 138, height 160. A heatsink depth that equals the depth with fans includes the fan, so that axis is not stored.

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WeightiAn air cooler with its included fans. An AIO cooler as one unit with pump block, tubes, radiator and fans. Mounting hardware is left out when the maker states it separately. When one maker figure may include the mounting kit, such as a press release net weight above the product page figure, the product page figure is stored. An RGB edition can weigh a little more or less, so it is per variant.

2,370g(5.2 lb)1Maker product pagearctic.de/en/Liquid-Freezer-III-Pro-420/ACFRE00181ARead 14 October 2026Spec sheet: weight 2370 g. Gross shipping weight is 2994 g.2Maker spec sheet (PDF)arctic.de/media/b2/dc/e3/1749041473/Spec_Sheet_Liquid_Freezer_III_Pro_420_EN.pdfRead 14 October 2026

2,270g(5 lb)8Reviewbasic-tutorials.de/tests/pc-hardware/asus-rog-ryuo-iv-slc-360-argbRead 15 October 2026Technical table, Gewicht (mit Luefter): 2.27 kg. The text says about 2.3 kg in total. A distributor feed on Direct Computers says 1.56 kg with no stated scope. ASUS publishes no weight.

Heatsink weightiAir coolers only. The heatsink without fans.

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In the box

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In the boxiItems supplied with this exact model, verbatim.

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)7Owner's manualsupport.arctic.de/products/liquid-freezer-iii-pro-420/techdocs/Quick_Manual_Intel_r1b.pdfRead 14 October 2026Packaging 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.8Owner's manualsupport.arctic.de/products/liquid-freezer-iii-pro-420/techdocs/Quick_Manual_AMD_r1b.pdfRead 14 October 2026AMD quick start guide: mounting clips set x1, spacers x4, VRM fan module, two PWM cables, washers, screws and MX-6 (0.8 g).

CPU Liquid Cooler (pre-applied thermal compound), 3 x 120 mm ARGB Radiator Fan, ROG VIP card, ROG Sticker, Quick Start Guide, Accessory Pack of Screws and Brackets, Tube fastener1Maker product pagerog.asus.com/us/cooling/cpu-liquid-coolers/rog-ryuo/rog-ryuo-iv-slc-360-argb/specRead 15 October 2026Package Content as printed, without the leading quantity of 1 for single items. The reviews also mention the curved display unit in the box. The White Edition page lists the same contents.

Links

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Product page

www.arctic.de/en/Liquid-Freezer-III-Pro-420/ACFRE00181A1Maker product pagearctic.de/en/Liquid-Freezer-III-Pro-420/ACFRE00181ARead 14 October 2026

rog.asus.com/us/cooling/cpu-liquid-coolers/rog-ryuo/rog-ryuo-iv-slc-360-argb2Maker product pagerog.asus.com/us/cooling/cpu-liquid-coolers/rog-ryuo/rog-ryuo-iv-slc-360-argbRead 15 October 2026Maker product page for the black edition.

Spec sheet

www.arctic.de/media/b2/dc/e3/1749041473/Spec_Sheet_Liquid_Freezer_III_Pro_420_EN.pdf2Maker spec sheet (PDF)arctic.de/media/b2/dc/e3/1749041473/Spec_Sheet_Liquid_Freezer_III_Pro_420_EN.pdfRead 14 October 2026

rog.asus.com/us/cooling/cpu-liquid-coolers/rog-ryuo/rog-ryuo-iv-slc-360-argb/spec1Maker product pagerog.asus.com/us/cooling/cpu-liquid-coolers/rog-ryuo/rog-ryuo-iv-slc-360-argb/specRead 15 October 2026

Manual

support.arctic.de/liquid-freezer-III-pro-4206Owner's manualsupport.arctic.de/liquid-freezer-III-pro-420Read 14 October 2026

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EPREL registration numberiId in the EU energy label database. Each size or model of a series has its own id, so it is per variant.

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Warranty

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Manufacturer warranty (source market)iThe maker's warranty period for the exact SKU or configuration and market named in the source note. It applies only to that stated market, not every regional variant. Statutory consumer rights are excluded. The base term is stored. An extension that needs registration goes in the source note.

6years1Maker product pagearctic.de/en/Liquid-Freezer-III-Pro-420/ACFRE00181ARead 14 October 2026Spec sheet and product page: 6 Years. The ARCTIC warranty page says six years for the entire product range and names no market.2Maker spec sheet (PDF)arctic.de/media/b2/dc/e3/1749041473/Spec_Sheet_Liquid_Freezer_III_Pro_420_EN.pdfRead 14 October 2026

6years1Maker product pagerog.asus.com/us/cooling/cpu-liquid-coolers/rog-ryuo/rog-ryuo-iv-slc-360-argb/specRead 15 October 2026Note: Warranty: AIO Cooler Module 6 years, Display module 2 years. The ASUS eShop calls it a 6 years manufacturer warranty. The 6 years is stored.2Maker product pagerog.asus.com/us/cooling/cpu-liquid-coolers/rog-ryuo/rog-ryuo-iv-slc-360-argbRead 15 October 20266-Year Warranty.3Maker product pageeshop.asus.com/us/90rc0151-b0aay0-rog-ryuo-iv-slc-360-argb.htmlRead 15 October 20266 years manufacturer warranty.

Both are also in the API. Back to all CPU coolers.