Asus ProArt LC 420 All-in-One CPU Liquid Cooler
Quiet, Cool, Refined Experience unparalleled cooling performance and quiet operation. Powered by an performance three-phase motor and Noctua IndustrialPPC fans, the ProArt LC 420 expertly integrates premium tech into an elegantly understated design. An illuminated meter on the pump cover also provides live system stats in the signature minimalist ProArt manner for real-time information at a glance. And its subtle and graceful aesthetics add a touch of refinement to your setup. Cool, quiet, and classy the perfect trifecta for any and all content creators. Illuminated Meter An innovative illuminated meter to display real-time PC build information, such as system load, temperatures, and fan speeds, allowing for a quick glance to understand the system's status. Noctua IndustrialPPC Fan To overcome the thermal challenges of the latest multi-core CPUs, the ProArt LC 420 offers Noctua NF-A14 industrialPPC-2000 PWM 140 mm radiator fans that deliver high performance and minimised noise. Performance 3-Phase Motor Pump Advanced three-phase motor offers excellent cooling capability and quieter operation. 450mm Durable Tubing This tubing features a braided mesh sleeve for durability, and 450 mm of length for additional flexibility and chassis compatibility. Thicker Radiator The thicker radiator's increased coolant storage capacity enables the ProArt LC 420 to deliver enhanced cooling performance. Extensive Compatibility The ProArt LC 420 features 450 mm of tubing and is compatible with a wide range of Intel and AMD motherboard platforms, giving you ample processor and build flexibility.
Quiet, Cool, Refined Experience unparalleled cooling performance and quiet operation. Powered by an performance three-phase motor and Noctua IndustrialPPC fans, the ProArt LC 420 expertly integrates premium tech into an elegantly understated design. An illuminated meter on the pump cover also provides live system stats in the signature minimalist ProArt manner for real-time information at a glance. And its subtle and graceful aesthetics add a touch of refinement to your setup. Cool, quiet, and classy the perfect trifecta for any and all content creators. Illuminated Meter An innovative illuminated meter to display real-time PC build information, such as system load, temperatures, and fan speeds, allowing for a quick glance to understand the system's status. Noctua IndustrialPPC Fan To overcome the thermal challenges of the latest multi-core CPUs, the ProArt LC 420 offers Noctua NF-A14 industrialPPC-2000 PWM 140 mm radiator fans that deliver high performance and minimised noise. Performance 3-Phase Motor Pump Advanced three-phase motor offers excellent cooling capability and quieter operation. 450mm Durable Tubing This tubing features a braided mesh sleeve for durability, and 450 mm of length for additional flexibility and chassis compatibility. Thicker Radiator The thicker radiator's increased coolant storage capacity enables the ProArt LC 420 to deliver enhanced cooling performance. Extensive Compatibility The ProArt LC 420 features 450 mm of tubing and is compatible with a wide range of Intel and AMD motherboard platforms, giving you ample processor and build flexibility.
Quiet, Cool, Refined Experience unparalleled cooling performance and quiet operation. Powered by an performance three-phase motor and Noctua IndustrialPPC fans, the ProArt LC 420 expertly integrates premium tech into an elegantly understated design. An illuminated meter on the pump cover also provides live system stats in the signature minimalist ProArt manner for real-time information at a glance. And its subtle and graceful aesthetics add a touch of refinement to your setup. Cool, quiet, and classy the perfect trifecta for any and all content creators. Illuminated Meter An innovative illuminated meter to display real-time PC build information, such as system load, temperatures, and fan speeds, allowing for a quick glance to understand the system's status. Noctua IndustrialPPC Fan To overcome the thermal challenges of the latest multi-core CPUs, the ProArt LC 420 offers Noctua NF-A14 industrialPPC-2000 PWM 140 mm radiator fans that deliver high performance and minimised noise. Performance 3-Phase Motor Pump Advanced three-phase motor offers excellent cooling capability and quieter operation. 450mm Durable Tubing This tubing features a braided mesh sleeve for durability, and 450 mm of length for additional flexibility and chassis compatibility. Thicker Radiator The thicker radiator's increased coolant storage capacity enables the ProArt LC 420 to deliver enhanced cooling performance. Extensive Compatibility The ProArt LC 420 features 450 mm of tubing and is compatible with a wide range of Intel and AMD motherboard platforms, giving you ample processor and build flexibility.
Quiet, Cool, Refined Experience unparalleled cooling performance and quiet operation. Powered by an performance three-phase motor and Noctua IndustrialPPC fans, the ProArt LC 420 expertly integrates premium tech into an elegantly understated design. An illuminated meter on the pump cover also provides live system stats in the signature minimalist ProArt manner for real-time information at a glance. And its subtle and graceful aesthetics add a touch of refinement to your setup. Cool, quiet, and classy the perfect trifecta for any and all content creators. Illuminated Meter An innovative illuminated meter to display real-time PC build information, such as system load, temperatures, and fan speeds, allowing for a quick glance to understand the system's status. Noctua IndustrialPPC Fan To overcome the thermal challenges of the latest multi-core CPUs, the ProArt LC 420 offers Noctua NF-A14 industrialPPC-2000 PWM 140 mm radiator fans that deliver high performance and minimised noise. Performance 3-Phase Motor Pump Advanced three-phase motor offers excellent cooling capability and quieter operation. 450mm Durable Tubing This tubing features a braided mesh sleeve for durability, and 450 mm of length for additional flexibility and chassis compatibility. Thicker Radiator The thicker radiator's increased coolant storage capacity enables the ProArt LC 420 to deliver enhanced cooling performance. Extensive Compatibility The ProArt LC 420 features 450 mm of tubing and is compatible with a wide range of Intel and AMD motherboard platforms, giving you ample processor and build flexibility.
in 28 offers
The lowest price for Asus ProArt LC 420 All-in-One CPU Liquid Cooler right now is $479.00 at PC Case Gear, compared across 25 retailers.
The all-time low was $289.99 on 23 Mar 2025 — today's price is 65% above the lowest ever. It has been notably cheaper before — worth setting a price alert.
Prices last updated 3 Oct 2026.
Last updated at 03/10/2026 16:54:43
ASUS ProArt LC 420 AIO Liquid CPU Cooler
Delivery between Wed – Fri $16
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Asus ProArt LC 420 AIO CPU Liquid Cooler (ProArt LC 420)
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originally posted on scan.co.uk
Wrestling with dissipating 250+ watts of heat from the surface of the 125-watt-rated Intel i9 14900 (k)?Always suffering with blue-screen "Pooty has had a problem" failures?Nine months + three cases + four cpu coolers on and, yes, the LC 420 does actually work. Mind you, I *had* to fit it on the intake and not the exhaust - and the massive be-quiet case now houses the full eleven fans (not including the three that are on the graphics card).Long-story-short; I can now run the thing at 100% at 5+GHz for days at a time, though it *is* pushing the electricity bill upwards. Ah, me.So if it's performance you want, you have to bite the bullet.Just for reference:- Asus ProArt Z970 WiFi motherboard, Geforce 3070TI graphics, 192GB of RAM and a couple of 2TB M.2 nvme ... MoreWrestling with dissipating 250+ watts of heat from the surface of the 125-watt-rated Intel i9 14900 (k)?Always suffering with blue-screen "Pooty has had a problem" failures?Nine months + three cases + four cpu coolers on and, yes, the LC 420 does actually work. Mind you, I *had* to fit it on the intake and not the exhaust - and the massive be-quiet case now houses the full eleven fans (not including the three that are on the graphics card).Long-story-short; I can now run the thing at 100% at 5+GHz for days at a time, though it *is* pushing the electricity bill upwards. Ah, me.So if it's performance you want, you have to bite the bullet.Just for reference:- Asus ProArt Z970 WiFi motherboard, Geforce 3070TI graphics, 192GB of RAM and a couple of 2TB M.2 nvme pcie 4x4 storage devices.Hope you find this helpful.
originally posted on asus.com
So Asus did it again. An awesome AIO with one major design flaw. The cables not only come out of the bottom but they come out right next to one of the tubes. This design flaw limits the movement of the right tube to less than 40 degrees. Every other AIO has at least 80 degrees of movement. I sometimes wonder if Asus has any computer building experience.
originally posted on asus.com
Works great on cpu cooling. I have the ProArt case to match and a ASUS ProArt Nvidia GeForce Rtx 4070TI Super gpu to match. My cpu that this thing cools is a AMD ryzen 7800x3d
| Type Characteristics of the device | All-in-one liquid cooler |
| Rotational speed (min) | 800 RPM |
| Rotational speed (max) | 2000 RPM |
| Airflow | 182.5 m³/h |
| Fan static pressure | 4.18 mmH2O |
ASUS ProArt LC 420 AIO Liquid CPU Cooler
Delivery between Wed – Fri $16
ASUS PROART LC 420 AiO CPU Liquid Cooler
Delivery between 8–13 Oct $18.85
Asus ProArt LC 420 AIO CPU Liquid Cooler (ProArt LC 420)
30-day returns
Asus ProArt LC 420 AIO CPU Liquid Cooler (ProArt LC 420)
30-day returns
ASUS ProArt LC 420 - 420mm AIO Liquid CPU Cooler
Delivery between 7–16 Oct $20
Wrestling with dissipating 250+ watts of heat from the surface of the 125-watt-rated Intel i9 14900 (k)?Always suffering with blue-screen "Pooty has had a problem" failures?Nine months + three cases + four cpu coolers on and, yes, the LC 420 does actually work. Mind you, I *had* to fit it on the intake and not the exhaust - and the massive be-quiet case now houses the full eleven fans (not including the three that are on the graphics card).Long-story-short; I can now run the thing at 100% at 5+GHz for days at a time, though it *is* pushing the electricity bill upwards. Ah, me.So if it's performance you want, you have to bite the bullet.Just for reference:- Asus ProArt Z970 WiFi motherboard, Geforce 3070TI graphics, 192GB of RAM and a couple of 2TB M.2 nvme ... MoreWrestling with dissipating 250+ watts of heat from the surface of the 125-watt-rated Intel i9 14900 (k)?Always suffering with blue-screen "Pooty has had a problem" failures?Nine months + three cases + four cpu coolers on and, yes, the LC 420 does actually work. Mind you, I *had* to fit it on the intake and not the exhaust - and the massive be-quiet case now houses the full eleven fans (not including the three that are on the graphics card).Long-story-short; I can now run the thing at 100% at 5+GHz for days at a time, though it *is* pushing the electricity bill upwards. Ah, me.So if it's performance you want, you have to bite the bullet.Just for reference:- Asus ProArt Z970 WiFi motherboard, Geforce 3070TI graphics, 192GB of RAM and a couple of 2TB M.2 nvme pcie 4x4 storage devices.Hope you find this helpful.
So Asus did it again. An awesome AIO with one major design flaw. The cables not only come out of the bottom but they come out right next to one of the tubes. This design flaw limits the movement of the right tube to less than 40 degrees. Every other AIO has at least 80 degrees of movement. I sometimes wonder if Asus has any computer building experience.
Works great on cpu cooling. I have the ProArt case to match and a ASUS ProArt Nvidia GeForce Rtx 4070TI Super gpu to match. My cpu that this thing cools is a AMD ryzen 7800x3d
Have not released in the US yet. Have been waiting since December
| Type Characteristics of the device | All-in-one liquid cooler |
| Rotational speed (min) | 800 RPM |
| Rotational speed (max) | 2000 RPM |
| Airflow | 182.5 m³/h |
| Fan static pressure | 4.18 mmH2O |
