Thursday, May 19th 2022

Alphacool Announces NexXxos HPE ST-20mm Slim Radiator

Alphacool's NexXxoS HPE radiator is now also available as ST20 variant. The compact slim radiator can be mounted very flexibly and space-saving even in the tightest cases due to its low height of only 20 mm.

Technically and functionally, the NexXxos HPE ST20 is comparable to the HPE-30 and HPE-45 versions. All water-bearing parts and the cooling fins are still made of pure copper. The number of water channels and copper fins inside the radiator has been increased with the result that a larger volume of water is now in direct contact with the cooling fins and the cooling surface is used much more efficiently. Thanks to the technical innovations, the heat transfer has been improved enormously compared to the previous NexXxos models and the cooling performance has been increased significantly.
The NexXxoS HPE ST-20 radiator is offered in the common variants (120/140/240/280/360 mm) for 120 mm and 140 mm fans.
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11 Comments on Alphacool Announces NexXxos HPE ST-20mm Slim Radiator

#1
DeathtoGnomes
Thanks to the technical innovations
Ok I'll bite, what innovations?
Posted on Reply
#2
ppn
DeathtoGnomesOk I'll bite, what innovations?
""the number of water channels and copper fins inside the radiator..
and the increase of 3 FPI, 16 to 19 FPI.
It may prove useful in cases where the top 280 radiator is obstructed by the motherboard VRM.
Or one could slap two of them together for 40mm total.
Posted on Reply
#3
bug
DeathtoGnomesOk I'll bite, what innovations?
More fins.

Personally, I doubt that works. More fins means thinner fins. Thinner fins means lower capacity to absorb heat. I'm sure it works as a slim radiator, but I'm also sure it's not as great as the marketing statement says.
Posted on Reply
#4
DeathtoGnomes
ppn""the number of water channels and copper fins inside the radiator..
and the increase of 3 FPI, 16 to 19 FPI.
It may prove useful in cases where the top 280 radiator is obstructed by the motherboard VRM.
Or one could slap two of them together for 40mm total.
bugMore fins.

Personally, I doubt that works. More fins means thinner fins. Thinner fins means lower capacity to absorb heat. I'm sure it works as a slim radiator, but I'm also sure it's not as great as the marketing statement says.
Not really innovations, maybe only for the brand product line...
Posted on Reply
#5
bug
DeathtoGnomesNot really innovations, maybe only for the brand product line...
For marketing, a slight change in the shade of the paint used qualifies as innovation :D
Posted on Reply
#6
looniam
bugMore fins.

Personally, I doubt that works. More fins means thinner fins. Thinner fins means lower capacity to absorb heat. I'm sure it works as a slim radiator, but I'm also sure it's not as great as the marketing statement says.
those fins didn't do bad for the HPE-45 - whats the outlier is how few fins the previous radiator had. (for low fan speeds).
Posted on Reply
#7
ThrashZone
bugMore fins.

Personally, I doubt that works. More fins means thinner fins. Thinner fins means lower capacity to absorb heat. I'm sure it works as a slim radiator, but I'm also sure it's not as great as the marketing statement says.
Hi,
Also means more air restrictive
But this thing is less than the thickness of a normal 120-140mm fan, I to don't see it doing much cooling wise.

Hardware labs gts series I believe is best thin rad at 29.6mm thick designed for low rpm fans.
Posted on Reply
#8
Awwwyeahhhbaby
bugMore fins.

Personally, I doubt that works. More fins means thinner fins. Thinner fins means lower capacity to absorb heat. I'm sure it works as a slim radiator, but I'm also sure it's not as great as the marketing statement says.
thinner fins means more capacity to dissipate heat, less material to retain via heat soak.
Posted on Reply
#9
bug
Awwwyeahhhbabythinner fins means more capacity to dissipate heat, less material to retain via heat soak.
Yeah, that's not how it works. Otherwise CPU heatsinks would be 100g instead of 1Kg+.
Posted on Reply
#10
Awwwyeahhhbaby
bugYeah, that's not how it works. Otherwise CPU heatsinks would be 100g instead of 1Kg+.
you can't really directly compare a heatsink to a radiator. But they have some properties that are the same, i.e more surface area equals higher capacity for heat dissipation. Look at the base of every CPU heatsink, they are small and flat copper with heatpipes expanding to massive aluminum thin finned towers. If thin metal was a bad thing, they'd all have large block of metal to dissipate heat and we haven't even touched on what types of metal are better at conduction vs convection.

basic principles here...more thin fins in a radiator dissipates heat better than less fins of thicker metal. If thin fins didn't matter, every radiator would just have water tubes and no fins or 6 fpi would be sufficient (which it isn't).
Posted on Reply
#11
Zuli_Muli
I'm always interested in performance but I'll stick with my XSPC 20mm radiator that so many of us in SFF building trust.
Posted on Reply
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