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Item#: N82E16835103198

Cooler Master Nepton 280L – All-In-One CPU Liquid Water Cooling System with 280mm Radiator and 2 JetFlo Fans

  • Zero maintenance design
  • CM designed pump
  • Thick FEP Tubing
  • Dual JetFlo 140 fans
  • Unique LED glow for logo
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The Nepton 280L brings watercooling to the next level. It features a CM exclusive designed pump and a highly effective waterblock for the best water flow. Dual JetFlo 140 fans supply powerful air pressure, while a 280mm aluminum radiator efficiently cools your system with heat dissipation. The Nepton 280L also includes robust and extra thick FEB tubing to prevent moisture absorption, while maintaining sufficient water flow for performance cooling. Cool your CPU with the Nepton 280L, so you can overclock it and push performance to the max!

  • newegg High Performance Radiator The Nepton’s 280mm radiator covers a larger surface area and provides even more water volume for improved dissipation. The radiator also includes compatibility for 140mm or 120mm fans to create a push-pull system.
  • newegg CM Designed Pump The CM designed pump and waterblock ensure the best water flow and system performance.
  • newegg Robust and Extra Thick FEP Tubing The robust and extra thick FEP tubing is strong and durable for deployment in a 280mm radiator installation. FEP tubing also prevents moisture absorption.
  • newegg New UltraFine Microchannel Designed for the best water flow and to draw maximum amount of heat away from the cold plate through the coolant.
  • newegg JetFlo Fan Compatibility The Nepton 280L is equipped with dual JetFlo 140mm fans which create powerful airflow and pressure, while minimizing vibration and noise through the included rubber pads.
  • newegg Illuminated Waterblock The unique white LED lights up on the waterblock lens.

The Nepton 140XL brings water cooling to the next level. It features a CM exclusive designed pump and a highly effective waterblock for the best water flow. Dual JetFlo 140 fans supply powerful air pressure, while a 140mm aluminum radiator efficiently cools your system with heat dissipation. The Nepton 140XL also includes robust and extra thick FEB tubing to prevent moisture absorption while maintaining sufficient water flow for performance cooling. Cool your CPU with the Nepton 140XL, so you can overclock it and push performance to the max!

  • newegg High Performance Radiator The 140mm radiator includes a push-pull system to provide highly effective cooling and thermal dissipation. The Nepton radiator also includes compatibility for 140mm or 120mm fans for added customization.
  • newegg CM Designed Pump The CM designed pump and waterblock ensure the best water flow and system performance.
  • newegg Robust and Extra Thick FEP Tubing The robust and extra thick FEP tubing is strong and durable. FEP tubing also prevents moisture absorption.
  • newegg New UltraFine Microchannel Designed for the best water flow and to draw maximum amount of heat away from the cold plate through the coolant.
  • newegg JetFlo Fan Compatibility The Nepton 140XL is equipped with dual JetFlo 140mm fans which create a powerful airflow and pressure, while minimizing vibration and noise through the included rubber pads. In addition, the radiator is also backwards compatible with all 120mm fans for total customization.
  • newegg Illuminated Waterblock The unique white LED lights up on the waterblock lens.


Learn more about the Cooler Master RL-N28L-20PK-R1

General

Brand
COOLER MASTER
Series
Nepton 280L
Model
RL-N28L-20PK-R1
Type
Liquid Cooling System

Block

Block Compatibility
Intel LGA 2011 / 1366 / 1150 /1155 / 1156 / 775
AMD Socket FM2 / FM1 / AM3+ / AM3 / AM2
Block Dim.
3" x 2.7" x 1.9"

Pump

Pump Noise
<25 dBA

Radiator

Radiator Dim.
12.2" x 5.5" x 1.2"
Radiator Material
Aluminum

Fan

Fan Dim.
140 x 140 x 25 mm
Fan RPM
800~2000 RPM (PWM) +/- 10%
Fan Air Flow
54~122.5 CFM +/- 10%
Fan Noise
21~39 dBA
Fan Connector
4 Pin

Features

Features
Rifle bearing

Compatibility
Top: Cosmos II, Cosmos SE, HAF XM, Trooper
Front: Cosmos SE, HAF XB

High Performance Radiator
The Nepton's 280mm radiator covers a larger surface area and provides even more water volume for improved dissipation. The radiator also includes compatibility for 140mm or 120mm fans to create a push-pull system.

CM Designed Pump
The CM designed pump and waterblock ensures the best water flow and system performance.

Robust & Extra Thick FEP Tubing
Robust & extra thick FEP tubing is strong and durable for deployment in a 280mm radiator installation. FEP tubing also prevents moisture absorption.

New UltraFine Microchannel
Rifle bearing

Designed for the best water flow and to draw maximum amount of heat away from the cold plate through the coolant.

JetFlo Fan Compatibility
The Nepton 140XL is equipped with dual JetFlo 140mm fans which create powerful airflow and pressure while minimizing vibration and noise through the included rubber pads. In addition, the radiator is also backwards compatible with all 120mm fans for total customization.

Illuminated Waterblock
Unique white LED lights up on the waterblock lens.

Quick Info

Warranty

  • Limited Warranty period (parts): 2 years
  • Limited Warranty period (labor): 2 years


Customer Reviews of the Cooler Master RL-N28L-20PK-R1

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Showing 36 of 36 reviews - Clear Filters

  • Stan T.
  • 7/15/2014 7:42:42 AM
  • Tech Level: Somewhat High
  • Ownership: 1 month to 1 year

5 out of 5 eggs

This review is from: Cooler Master Nepton 280L – All-In-One CPU Liquid Water Cooling System with 280mm Radiator and 2 JetFlo Fans

Pros: Lowered my temps about 10C compared to my Corsair H105. The Corsair kit was by far easier to install but with the CM kit lowering my temps 10C, it made the more 'difficult' install worth it.

Cons: A little loud but that didn't really bother me.

Did you find this review helpful? Yes No

  • Francis O.
  • 7/1/2014 1:36:56 PM
  • Tech Level: Average
  • Ownership: 1 week to 1 month
  • Verified Owner

5 out of 5 eggsImpressive & overwhelming

This review is from: Cooler Master Nepton 280L – All-In-One CPU Liquid Water Cooling System with 280mm Radiator and 2 JetFlo Fans

Pros: -size(con for some) and fin density

-thick/tough FEP tubing

-comes with PWM Y cable

-performance was better than my other heatsink(phtc14pe)

-pump illumination

-warranty(was 2 years, now extended to 5 years)

-30mm thick rad compared to 27mm on other 280mm AIO

Cons: -fans (round frames won't have best performance on these, replaced with noctua nf-a14 industrial 3000rpm)

-overwhelming size, may not fit very well with other cases.

-some pump whine but don't bother me, my fans are louder so no worries.

-some bent fins but didn't bother performance.

Other Thoughts: Had to go AIO after i realized the phtc14pe "towered" over my build. i was trying to show off the rest of the goodies(air 540, maximus vi formula, tridentx, 780ti classified SLI). replaced jetflo with noctua nf-a14 industrial 3000rpm. same sound output but better static pressure performance. gets like 150CFM and 10mm/h2o static in full speed.

cooled my i7 4790k 1.2v stock @ avg of 58-62 deg and 1.3v 4.6ghz @ avg of 70-74 deg. i have the noctua in push config and still thinking about placing the jetflo in pull but i don't think it will fit.

case fitment can be overwhelming but it makes it tidy compared when having a massive heatsink. FEP tubing is very tough, might be a con for some, it's thicker too. pump is like the size of a baby's fist so plan accordingly. swivel part of the tube, where the pump is, gets VERY close to the ram stick but depending on orientation. tubing is long enough too. not as long as kraken x60/x61.

i have this mounted on the top of the air 540. the screws that hold the rad are just the right size for my case. comes with 2 different thumbscrews for the fan to rad mounting. i wouldn't suggest using tools so you wouldn't strip it.

overall i'm pleased with this product. a little pump whine but unless you have your head in the case, you won't even hear it.

2 out of 2 people found this review helpful. Did you? Yes No

  • Christopher U.
  • 6/8/2014 2:21:10 PM
  • Tech Level: Somewhat High
  • Ownership: 1 month to 1 year
  • Verified Owner

5 out of 5 eggsPowerful cooler

This review is from: Cooler Master Nepton 280L – All-In-One CPU Liquid Water Cooling System with 280mm Radiator and 2 JetFlo Fans

Pros: Excellent and reliable cooler. Max temps now 37c when overclocking to 4. No failure of the pump or fans.

Cons: Big and you have to be careful of the case fitting- Check compatibility listings first. My case was not "compatible", (see below)

Other Thoughts: My rig: HAFF 632 case, ASUS Rampage Black with i7 4960, 64 of G.Skill ram, ASUS GTX 780Ti video cards in SLI, 4 hard drives and 2 SSHD,s.
Had to Purchase 4 extra long bolts with washers to attach the radiator below my top out vent fan, resulting in a push/pull configuration. The fans were noisy until I utilized the fan control program in the ASUS Motherboard software. Now quiet and cool even with heavy gaming and OC. Now- I am considering options for the video cards!

Did you find this review helpful? Yes No

  • Benjamin H.
  • 5/21/2014 4:50:36 PM
  • Tech Level: High
  • Ownership: less than 1 day
  • Verified Owner

3 out of 5 eggs280L nepton cooler master liquid cooler

This review is from: Cooler Master Nepton 280L – All-In-One CPU Liquid Water Cooling System with 280mm Radiator and 2 JetFlo Fans

Pros: keeps the OC cpu as cold as my ninja copper pipe metal fin oversized cooler did... does so with a lot better air flow inside the case for other peripherals

Cons: radiator doesn't really fit in my HUGE case because of thickness next to the motherboard USB 3.0 stack ... just drilled new holes moved it torwards the front of the case luckily the vent is a little oversized... the top of my vents in my case is 320 MM plus and it fits the radiator fine. the fans have to go on outside because of the thickness. very strange in this large case.

one of the "jetflo 140 mm" fans is SEMI DOA I have to spin it with my finger or tap on it already brand new for it to spin up

I imagine new egg or Coolermaster is going to tell me to RMA or something for the fan...

I am going to be saddened if they say I have to uninstall this behemoth and send ALL of it back. I have plenty of other fans

but the principle of the thing... you know?

Other Thoughts: better airflow for other accessories

0 out of 1 people found this review helpful. Did you? Yes No

  • Cang N.
  • 5/6/2014 6:21:33 PM
  • Tech Level: Average
  • Ownership: 1 day to 1 week
  • Verified Owner

3 out of 5 eggsNepton 280L

This review is from: Cooler Master Nepton 280L – All-In-One CPU Liquid Water Cooling System with 280mm Radiator and 2 JetFlo Fans

Pros: Very solid. Looks great. Relatively quiet.

Cons: The way the fans are mounted in the picture, the fan blades tend to sag downwards and the blades were actually hitting my CPU power cable/clip and hindering the blades from spinning. Had to flip them around and have fan house guards up against the clip so it wouldn't block it from spinning. So far so good. Definitely a tight fit even in my Cooler Master Storm Trooper.

0 out of 1 people found this review helpful. Did you? Yes No

  • Julian S.
  • 5/6/2014 9:02:39 AM
  • Tech Level: Somewhat High
  • Ownership: 1 week to 1 month
  • Verified Owner

5 out of 5 eggsThis thing is huge!!

This review is from: Cooler Master Nepton 280L – All-In-One CPU Liquid Water Cooling System with 280mm Radiator and 2 JetFlo Fans

Pros: This All-in-one is really huge. I bought this because its one of the few all-in-ones that out right says supports socket 775. This is a bandaid upgrade until I do a full system upgrade. The loop runs my core 2 quad q9400 OC'd to 3.66ghz on idle at 30c and 60c on full load. I feel like I can push my CPU further. I used to have a Zalman CNPS 9700 NT. It worked well. It ran the same overclock on my CPU on idle at 30c but on full load it was about 10c hotter.
Installation was easy too. but if you plan on putting this in an older case (e.g. CM 690 1st gen) you might need to do some modding (I had to drill some screw holes because the ones on this thing do not match the case fan holes on my PC. r
PS
It is also amazing how well this thing is performing considering that the way I set it up is not optimal. Since the thing barely fits my case I had to put the fans not on the inside of the case but on top of my case. so there is a bit more separation between the fan and the radiator than what there should normally be.

Cons: Too large for my case but its not really the part's fault. The fans are a too noisy for me when on full load. They do push allot of air. My friend has a Corsair H100 and the stock fans on those things pushed a lot of air and were nice and quiet.

Other Thoughts: I am planning on getting Noctua fans maybe on the next pay day.

Did you find this review helpful? Yes No

  • Andrew S.
  • 5/3/2014 12:40:58 AM
  • Tech Level: Somewhat High
  • Ownership: 1 month to 1 year
  • Verified Owner

1 out of 5 eggsRadiator screw holes strip easy

This review is from: Cooler Master Nepton 280L – All-In-One CPU Liquid Water Cooling System with 280mm Radiator and 2 JetFlo Fans

Pros: Keeps CPU pretty cool, my i7-4930K at full load only got to 75 C for temp. CPU cooler was running at 2230 RPM.

Cons: Biggest Con on this cooler is the Radiator screw holes. If you tighten them just a hair too much it strips them out, and then you have to deal with plumbers tape and all sorts of stupid stuff. Meaning you would have to re-order another one. The Plumbers tape is just temporary.

Other Thoughts: Cooler Master needs to fix the radiator screw holes, maybe give longer screws to reach through to the other side, and put a washer & nut on the other end to tighten them down without having to worry about it stripping out. This is the 2nd one I have had to replace, and its annoying when your cpu cooler just wants to rattle at speeds higher than 1100 rpm.

Manufacturer Response:

Hello Andrew S,

We apologize for the trouble that you are experiencing with the Nepton 280L. The Nepton 280L comes with a 2 year warranty. Please contact us so that we can replace the cooler.

Phone: 888-624-5099

Respectfully,
Patrick
CMUSA Support

0 out of 1 people found this review helpful. Did you? Yes No

  • Joshua F.
  • 4/29/2014 1:30:07 PM
  • Tech Level: Somewhat High
  • Ownership: 1 week to 1 month
  • Verified Owner

5 out of 5 eggsAwesome

This review is from: Cooler Master Nepton 280L – All-In-One CPU Liquid Water Cooling System with 280mm Radiator and 2 JetFlo Fans

Pros: This might be the best cooler than you can buy without going open loop water cooling.

Cons: Install was easy, considering I could remove my motherboard tray,

Other Thoughts: I purchased 4 140mm fans to upgrade the cooling on the radiator. I have observed temps near ambient temps at 25-50% load, and about 8 degrees higher at idle. I think this is because the fans are beast. So to reiterate this point, the cpu is actually cooler under load, than it is sitting idly.

Did you find this review helpful? Yes No

  • William L.
  • 4/12/2014 6:27:13 PM
  • Tech Level: High
  • Ownership: less than 1 day
  • Verified Owner

5 out of 5 eggsWater

This review is from: Cooler Master Nepton 280L – All-In-One CPU Liquid Water Cooling System with 280mm Radiator and 2 JetFlo Fans

Pros: Quiet
Aesthetically pleasing to the eye.
Keeps CPU very cool.
Quality parts.
Idle 30c Load 45c

Cons: None

Other Thoughts: Warning:
To install on the Asus Formula VI you must remove the
thermal armor and install the back plate.
Then reinstall thermal armor. Was very easy just a pain to pull motherboard out.
Not going to drop an egg though due to it being a mobo issue on my part.

CPU used is the i5 4670k

2 out of 2 people found this review helpful. Did you? Yes No

  • Paul M.
  • 4/2/2014 8:45:14 AM
  • Tech Level: High
  • Ownership: 1 month to 1 year
  • Verified Owner

5 out of 5 eggsFantastic Cooling Performance

This review is from: Cooler Master Nepton 280L – All-In-One CPU Liquid Water Cooling System with 280mm Radiator and 2 JetFlo Fans

Pros: Low noise on low fan setting
Amazing cooling capability
AMD 8320 @4.7 from 3.5... does not go above 46C under full load

Cons: I had to Mod my Case... not worth the loss of an egg
The cooler does it's job perfectly.

Other Thoughts: Rosewill THOR V2 (White)
I had to mod the case to get this in with my Sabertooth and my Crosshair V The Mobo's heatsinks would not allow an inside the case installation and the placement of the hoses and size of the RAD I placed it on top and removed the fin vents. Not a big deal for the performance this gives. Runing a 1.2Ghz OC and still having thermal headroom is impressive.

Never blame the accessory for not fitting your component because of your lack of research or knowledge. If in doubt contact their support before buying or be willing to accommodate (like me) and make some modifications.

2 out of 2 people found this review helpful. Did you? Yes No

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