The NexXxoS XP3 Light Block

Except from the block itself, the necessary hardware for the mounting of the block – including a universal backplate and retention brackets for Intel and AMD platforms – can be found inside the packaging of the block. There is also a small syringe with unbranded silver thermal material and instruction manuals.

Alphacool has designed the NexXxoS XP3 Light to be compact and easily adaptable for future platforms. It is very small and lightweight, hardly larger than the CPU socket itself. Two openings for the compression fittings can be seen at the top of the block. The user has to make sure that the flow goes in from the center of the block and out from the edge, otherwise there will be a great loss of performance. Alphacool also includes a very clear notice that no tools should be used for the tightening of the compression fittings, as that can easily damage the plastic threads. Tightening the compression fittings by hand is more than enough.


The base of the NexXxoS XP3 Light is obviously copper. It is well-machined and smooth enough, but Alphacool did not bother polishing it down to a mirror finish. The company likely expects that the experts who would buy such a kit already know that a perfect mirror finish would not actually benefit performance by a measurable amount. Alphacool is also using copper screws in order to prevent chemical oxidation.

The interior of the NexXxoS XP3 Light is relatively simple, yet it is more complex than what an untrained eye might realize. The plastic part forms two H shaped jets that forcefully direct liquid flow towards the copper base. The copper base is practically a thin sheet of copper that has many small traces engraved into it, forming about a thousand mini rectangular pylons. The pressure generated by the jets forces the liquid to move in-between these mini pylons, enhancing heat transfer.

The NexXxoS XT45 Radiator

Perhaps the most important part of the system is the massive NexXxoS XT45 radiator. Alphacool supplies it along with mounting and fan screws, as well as with four plugs.

The 360 mm-class XT45 is a massive heat exchanger that measures 400 mm long and 46 mm thick. Its exterior frame is steel, while the chambers and the fins are copper, resulting to a massive weight of 1.4 kg without any parts/fans attached. The paint job of the steel frame is excellent, but it is only superficial on the radiator itself, covering just a bit of the copper chambers. Close inspection reveals that the fins are bare copper.


Alphacool placed not two but six openings for compression fittings, which is why they also supply four plugs alongside with the radiator. The user can select two of the fittings with the most suitable orientation, or even connect more than one loop/system to a single radiator.


Introduction, Packaging & Bundle The Repack Reservoir, Laing DDC pump, Fittings & Fans


View All Comments

  • JoeyJoJo123 - Tuesday, October 25, 2016 - link

    >The home user's typical workloads don't benefit from overclocking
    Typical home users aren't spending at least a thousand dollars on a custom built PC, and investing in the enthusiast platform (x99) as opposed to the standard desktop platform (H170).

    >the increase in performance is marginal and not worth the effort.
    My 6600k went from 3.5GHz to 4.6GHz after an overclock and minor overvoltage to ensure system stability. I don't think that's at all marginal. Additionally, many boards are coming with EZ Overclock modes if you invest in a K-series CPU + Z170 chipset motherboard. You go into the BIOS and select their preset. I started with Gigabyte's G5 Gaming's 6600k @ 4.4GHz preset and changed the multiplier from 44 to 46 and the core voltage up by +50mV. ASUS boards have a dynamic overclock function that goes through a series of reboots to find your processor's best overclock, which can change from chip to chip. It's nowhere near as hard as you make it out to be and a 31% increase in peak performance for the same money spent isn't as inconsequential as you make it out to be.

    >Sure there's showboating to friends and emotional self-gratification, but those aren't tangible rewards.
    Rewards such as going from 90 FPS min, and 130 FPS average in a game on a 144hz Freesync monitor to a 110 FPS min and 155 FPS average is an actual tangible benefit to me. In fact, that's indicative of the extra performance I got, without having to lower a single graphical setting to achieve.

    >in my opinion, it's wasteful, childish, and silly.
    In my opinion, it's wasteful, childish, and silly to try to force your opinion that overclocking is against your religion on an internet site full of enthusiast PC users. You're not an enthusiast PC user that likes to overclock? Fine by me. I don't go around saying that people should always buy overclockable K-series CPUs rather than settling on a basic i5 or i3, as everyone has different use-cases. But I certainly don't really care to hear from morons who say my real world gains from overclocking a $200 processor are wasteful, childish, or silly.

    Just FYI, that's the pay I get from a half-day of work. Why the hell do you care if I overclock some sand made into circuits? Why do you think you have any say in how other people spend their money?
  • BrokenCrayons - Tuesday, October 25, 2016 - link

    <...aren't spending at least a thousand dollars...>
    Typical home users really do drop over 1K on their computers. It's a lot more common than you might think. I'm surprised you'd open this post with a claim about costs and then make a counter-point using a diametrically opposed perspective at the end of it.

    <...went from 3.5GHz to 4.6GHz...>
    The numeric value of the overclock isn't the focal point of that argument. There are a lot of other factors that contribute to a computer's capabilities. Your word processor and e-mail fetching won't dramatically change due to your efforts. Games, though entertainment and not particularly important, won't see benefits either even with very high end graphics cards as AT's recent benchmarks analyzing CPU performance have previously proven. So yes, I still feel it's not consequential and certainly not worth the effort.

    <...going from 90 FPS min, and 130 FPS...>
    I highly doubt there's a situation in which a framerate increase of the numbers you're expressing reasonably results solely from overclocking a CPU in the scenario you're describing.

    <...don't really care to hear from morons who say...>
    I'm not forcing my opinion on anyone. No one is being chained to their chair and made to read, think about, or respond to my comments. If my comments encourage the occasional person to think about computing and put it into a different perspective, then I'm happy to have done so. If that requires they go through a little discomfort during that self-analysis wherein they redirect their anguish at me in the form of name-calling, then so be it. However, that portion of your post does support my comment about how childish these sorts of things become and the sorts of people attracted to such ideas. I imagine you weren't setting out to support that portion of my argument, but I'd be remiss were I not to point it out.

    <...the pay I get from a half-day of work...>
    Cleverly using a response to hint at your personal wealth. Hmm...interesting.
  • kn00tcn - Wednesday, October 26, 2016 - link

    you highly doubt there's an fps situation!? what's your problem, crysis1 for example is known to top out around 80fps on all modern gfx cards due to cpu limits that only a cpu overclock can increase

    all game benchmarks that have an amd cpu against an intel cpu clearly show a drop in fps (if not average then it's the minimum) on the same gfx card

    all the people talking of 60hz or 'a 1070 is overkill for 1080p' completely ignore 120+

    all the singlethreaded software alone is being gimped on the more expensive platforms since those cpus are lower blocked than the regular consumer ones, so overclocking is the only way to have more cores AND stay at 4ghz
  • fanofanand - Tuesday, October 25, 2016 - link

    Other than the minor insults and bragging about your income, this was an excellent rebuttal. I would like to see more of this type of debate/discussion. :) Reply
  • kn00tcn - Wednesday, October 26, 2016 - link


    also one key thing about E series, they are usually clocked much lower, meaning single thread performance drops, affecting tons of use cases
  • Death666Angel - Tuesday, October 25, 2016 - link

    "but in my opinion, it's wasteful, childish, and silly."
    And there you lost all credibility in this discussion.
  • BrokenCrayons - Tuesday, October 25, 2016 - link

    <And there you lost all credibility in this discussion.>
    Why would anyone worry about establishing credibility in a comments section under an article about a computer water cooling system? Of all the things in life there are to worry about, that seems pretty insignificant. It's a bit like worrying about what your friends think of the color of crayon you used on the birthday card you made for your parent in elementary school art class. :)
  • Andrew LB - Wednesday, February 8, 2017 - link

    I have a roughly 30% overclock on my graphics card that is water cooled and it results in an FPS gain from 35-40 to a nice solid 60fps locked. Interesting how the moment someone makes a point which refutes your claims, out comes the condescending attitude and insults. The sign of someone who lost the argument. Reply
  • Samus - Monday, October 24, 2016 - link

    Using a dielectric liquid helps mitigate risk of a leak, as does occasional maintenance. Just like a car, and speaking from experience, a liquid cooler leak is generally slow and can be caught before damage is done. The only time I've had a leak was after getting back from a LAN party where my case was being transported and the next morning I noticed my carpet was wet (the system had been on all night)

    One of the fittings was just a little lose and needed to be tightened. I lost about 60ml of coolant and it trickled over my videocard and motherboard to the bottom of my case. Since I use an inert coolant and wetter water as a deox no damage was done.
  • Achaios - Tuesday, October 25, 2016 - link

    Ι agree with BrokenCrayons. Not to mention that squeezing more performance out of CPU's above a certain point easily achievable by Air Coolers is meaningless after 2011 and the introduction of the i5-2500k.

    Only component worth of liquid cooling is the GPU IMO.

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