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Cooler Master > 
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
BUY WITH CONFIDENCE
This product qualifies for the Iron Egg guarantee. We'll match any qualifying competitor's price.
IronEgg
BUY WITH CONFIDENCE
This product qualifies for the Iron Egg guarantee. We'll match any qualifying competitor's price.
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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 44 of 44 reviews - Clear Filters

  • Corwyn H.
  • 11/24/2014 6:27:56 PM
  • Tech Level: High
  • Ownership: less than 1 day

1 out of 5 eggsQuestionable fitting

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

Pros: Large 140.2mm radiator
Two high speed, high static pressure fans included

Cons: The screws included to hold the radiator in place,on the side with no fans, do NOT have big enough heads. They were also too short for my case.

Either this radiator uses non-standard 280mm mount points or this just does not fit with my case. The top mounting holes only align with 4 of the 8 top fan holes. The other four are forward of the holes by like 1/4"

Other Thoughts: Case - Corsair C70

Manufacturer Response:

Hello Corwyn H,

We apologize for the trouble that you are experiencing with the Nepton 280L. Please contact us so that we may trouble shoot the issue.

Phone: 888-624-5099

Respectfully,
Patrick
CMUSA Support

Did you find this review helpful? Yes No

  • Anonymous
  • 11/4/2014 9:37:20 AM
  • Tech Level: Somewhat High
  • Ownership: 1 day to 1 week
  • Verified Owner

5 out of 5 eggsWorks as described

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 temps below 40 degrees Celsius running games while overclocked. Thick raditator, and powerful fans.

Cons: Fans are pretty loud, but easily controlled by cpu fan header. Had to connect pump to a random header on the mother board to get it to run above 0 Rpms for some reason, but it was probably just my motherboard itself.

Did you find this review helpful? Yes No

  • Bryan D.
  • 10/30/2014 7:44:07 AM
  • Tech Level: Somewhat High
  • Ownership: 1 week to 1 month
  • Verified Owner

3 out of 5 eggsExcellent cooler but not very convenient

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

Pros: The cooler is extremely efficient. On an i7-5820K overclocked to 4.2GHz, it is able to keep the CPU under 70c with the processor being stressed via Intel Burn Test.

Cons: The first issue this cooler has is the mounting screws. The screws are so small that they look better suited for motherboard mounting screws rather than radiator mounting screws. If you have a tower with large mounting holes or rubber grommets, getting the radiator mounted is going to be a bit of a chore. This could have been remedied if Cooler Master included more than one type of mounting screw. An oversight such as this is something to be expected from a product marketed in the +/- $50 range, not the + $100 range.

The second issue is the fans are quite loud by default. Unless you have a fan controller, or your motherboard allows you to set your CPU fan speeds, prepare your ears.

The final issue is the metal the radiator is made from is quite soft and prone to stripping. By simply mounting the radiator, unmounting it, and mounting the radiator a second time, two of the 8 screw mounts stripped down to uselessness. Needless to say, be as careful as you possibly can while mounting the radiator.

Other Thoughts: The biggest deduction in score is due to the soft metal the radiator is made out of, and the fact that there are no alternate mounting screws. Aside from that, as long as you have the capability to adjust the fan speeds, this is a very rock solid cooler. In my own environment, I have the cooler set to 30% fan speed for temps of 50c or lower, which is plenty to keep the CPU just under 39c while idle, and completely noise free in the process.

Did you find this review helpful? Yes No

  • Brendan R.
  • 10/29/2014 10:58:32 AM
  • Tech Level: High
  • Ownership: 1 week to 1 month
  • Verified Owner

1 out of 5 eggsAvoid

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

Pros: Unknown

Cons: Inability to actually install the unit due to missing parts.

Other Thoughts: Avoid. I recently purchased this water cooling unit and a tower by the same manufacturer. Both arrived missing parts. The Cooler Master support folks are very personable and agreeable on the phone, but not effective. I put in a parts request 19 days ago and despite repeated phone calls and guarantees that the missing parts would be sent off next day they still have not been as of a phone call this morning. I've been waiting to build this new system for 3 weeks waiting on parts because the manufacturer didn't have more stringent quality control and is utterly ineffective at customer support. The equipment may be great, but if you can't assemble it, it's just a frustrating waste of time, money, and space. Will not be purchasing Cooler Master equipment again.

Manufacturer Response:

Hello Brendan R,

We apologize for the trouble that you are experiencing with the Nepton 280L. Please contact us so we can rectify the issue.

Phone: 888-624-5099

Respectfully,
Patrick
CMUSA Support

Did you find this review helpful? Yes No

  • Stephen L.
  • 10/8/2014 1:28:14 PM
  • Tech Level: High
  • Ownership: 1 week to 1 month
  • Verified Owner

4 out of 5 eggsVery happy with this 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: This cooling system works very well and does as it is advertised to do.

Cons: The stock fans are noisy as hell and I swapped them out for Cougar CF-D14HB-B fans so this cost the product 1 egg.

Other Thoughts: All in all Im quite happy with this and even with the oc that Im doing with my cpu the cooler keeps up with it nicely. Im using a push/pull arrangement in the HAF X case that Im using and it seems to be working well. Im not the first and I wont be the last to comment on the noisy stock fans so Cooler Master should address this at some point though I doubt they will.

Did you find this review helpful? Yes No

  • Keneth H.
  • 10/4/2014 9:35:28 AM
  • Tech Level: Somewhat Low
  • Ownership: 1 week to 1 month
  • Verified Owner

4 out of 5 eggsSlick, HUGE, and hot.

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

Pros: My knowledge on heat-sinks and radiators is extremely low, so don't take anything I state as a serious disadvantage.
The radiator fits in my 780T Full Tower pretty nice. I can't really say much since this is my first radiator, but it seems to do exactly what it claims.

Cons: The mounting screws were a bit odd and they didn't let me mount it to the top of my 780. the instructions weren't dumb-friendly. I youtubed some videos and it helped. The radiator blows a bit of hot air (i don't know if this is supposed to happen??)

Other Thoughts: Again, I'm not an expert. This is my first build, but I AM satisfied.

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

  • Whitney D.
  • 9/30/2014 10:26:21 AM
  • Tech Level: High
  • Ownership: 1 week to 1 month
  • Verified Owner

5 out of 5 eggsNice

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

Pros: Went from Cooler master original Water cooler setup to this keeps a 5820k at 40-42 C while gaming . coupled with the Asus x99 went through extreme testing to 5.2 ghz then chickened out cause I didn't want fry the chip ... temp were 79C ... My last product lasted 5 years could have gone longer but decided to upgrade with new Technology and glad I did

Cons: Can't think of any

Did you find this review helpful? Yes No

  • Jeffrey F.
  • 9/13/2014 6:50:41 AM
  • Tech Level: Somewhat High
  • Ownership: 1 week to 1 month
  • Verified Owner

5 out of 5 eggsBUY IT

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 cooler works very well. It is keeping my 3960x under 60 degrees @ 4.6 ghz @ 1.4 vcore while running prime95. Easy to install and not to loud.

Cons: none yet

Did you find this review helpful? Yes No

  • 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.

3 out of 3 people found this review helpful. Did you? Yes No

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Item#: N82E16835103198
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