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yeah oh my god

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if you want to tame the hottest gaming cpus the marketing says that you want

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water cooling but i'ma let you in on a little secret that's not actually true

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this is a thermosyphon and it is not

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your grandma's air cooler unless your grandma's a physicist and rides a bad

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ass motorcycle and reads you awesome bedtime stories

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below the problem is that Intel's top of the

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line gaming CPU the core i9 12 900k runs

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so hot that even the legendary nhd15 the king

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of air coolers can't keep up with it i mean you could turn off performance mode

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or multi-core enhancement but at that point why did you pay 600 us dollars for

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a processor only to leave performance on the table oh and did i mention you'll

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still be maxing out at 95 degrees on an

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open-air test bench that means you're probably thermal throttling the second

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you close your side panel water cooling has advanced to help us

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tackle these ever hotter cpus in a number of ways stronger pumps more

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efficient cold plate designs larger radiators and by mounting them to the

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intake of a case we get to use the coolest air available to tackle the

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hottest parts of our machines but compared to traditional heat sinks even

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all-in-one water coolers like this one are more challenging to install

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expensive and they have more points of failure oh rate leaks are rare these

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days but a failed pump could easily put you out of commission for a while the

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good news is that while water cooling has been stealing all the headlines air

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cooling has been quietly improving in the background ice giant's first product

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the pro siphon elite blew us away by

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outperforming both this guy and 240 millimeter aio liquid coolers it

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works by using heat from the CPU to boil

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fluid inside the evaporator here that

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vapor makes its way to the condenser this large finned heatsink array up here

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where it cools liquefies and then falls

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back down to the evaporator creating a cooling loop with no moving parts the

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principle is actually similar to a heat pipe but almost simpler in a way because

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the liquid is moved back to the heat source by gravity rather than by

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capillary action thermosyphons must be

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mounted in the correct orientation but the upside is that they are not nearly

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as easily overwhelmed by a strong heat source enough about the old though

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where'd it go oh here it is let's talk about what's new ice giant just sent

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over a prototype thermosyphon elite with some really exciting upgrades the most

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obvious one is right here goodbye

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aluminum hello copper that was a good

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idea someone suggest that to them could be anyway this was done to improve

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heat conduction from the CPU into the thermosyphon but even more important are

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the boiling enhancements that they've made to the evaporator they've

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completely changed the layout of the fins inside here to create more surface

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area and they've added tiny pieces of sintered copper there as well not only

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do these also create more surface area for nucleation sites but these particles

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act as a wick to help distribute condensed liquid on the return trip

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sounds pretty cool but i wouldn't recommend buying one and

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certainly wouldn't recommend investing in ice giant apparently is undergoing a

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funding round right now until i have validated it for myself

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so we grabbed this a high-end test bench our frame from

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thermal grizzly more on that later and we slapped on all of our coolers testing

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them at around the same noise levels of a maxed out though still very quiet and

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hd15 that's roughly 47 decibels our og

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aluminum pro siphon elite was unfortunately the only cooler to thermal

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throttle in our 2000 sample classroom blender test disqualifying it outright

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but as you can see here our copper unit comes out on top beading knocked to us

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best by a whopping 5 degrees it was also

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the only cooler in our test that brought our 12 900k below 90 degrees under load

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admittedly this is on an open test bench where it doesn't have to contend with

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heat from other components swirling around it but it's still impressive

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however cranking things up a notch by enabling

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performance mode on our motherboard caused our CPU to draw another 20 to 30

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watts resulting in a fail result for all

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three of our coolers to be fair 250

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watts is a lot of power and if you want that kind of performance it's fair to

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say that you might have to make some sacrifices namely noise

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in an attempt to tame the beast we unlocked our ekaio and our copper

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prototype allowing their fans to ramp up to around 2100 RPM and then we re-ran

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our tests in both default and performance mode

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it cost us about 10 decibels in both cases but at Intel's stock power limit

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the copper prototype thermosyphon pulled ahead even further with a maximum

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package temperature of just 85 degrees celsius

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that's downright reasonable unfortunately it's still thermal

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throttled in performance mode but as our friend slave pointed out to us

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performance mode is a pretty ham-fisted way of optimizing your CPU

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by tuning the 12900k operating voltage

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load line calibration and turbo ratios

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he managed to use the extra thermal headroom of the copper prototype to

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squeeze out even better performance than performance mode and without any thermal

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throttling now full disclosure splave is

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invested as a partner with ice giant but that also kind of speaks volumes

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doesn't it if it's good enough for him it's probably good enough for me and so

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is our new ShortCircuit hoodie check it out at lttstore.com

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conversation here though copper thermal siphon very legal and very cool

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hopefully it makes it to market without costing too much more than the old aluminum one but i feel like there's an

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elephant in the room what is going on with computer chips right now AMD is

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jacking up their power targets for am5 NVIDIA is rumored to be hitting 600 to

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800 watts on their upcoming 4000 series

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and Intel is already shipping consumer

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products that are basically uncoolable

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unless you resort to this but you just cooled it Linus with that

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you might say well yeah but i used a prototype cooler

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on an open test bench and i did a bunch

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of other stuff that's not reasonable for the average consumer okay first up i'm

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using top of the line thermal grizzly thermal paste and second i have likely

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voided the warranty on both my motherboard and my CPU by installing

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thermal grizzly's CPU contact frame that thing i alluded to before

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in a nutshell it's a modification to the lga 1700 socket that ensures even

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retention pressure on the CPU for better thermal contact we'd like to do a

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dedicated video on it at some point but the short version is that without it

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we'd likely be running five or so degrees hotter during all of our tests

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that means thermal throttling on the 12900k right out of the box

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but hold on Linus you might say there are better water coolers out there that

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surely would handle the 12 900k without any of this nonsense everyone knows that

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240 millimeter rads like this one are

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weak sauce now well to that i would respond a no one says weak sauce anymore

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come on and b we actually pulled out an ek aio elite 360 for our comparison as

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well and found that it performed no better than our thermal siphon a little

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worse actually i've never seen that before i tried to

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pull it off the thing but instead of unplugging it ripped right out of the

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fan do you need to run any more tests with this i don't think so but

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yeah we can fix it i

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now all of this modification nonsense might be a price that you're willing to

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pay but frankly i'm getting kind of sick of

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hardware manufacturers redlining their gear out of the box to the point where

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we're forced to buy and install exotic modifications just to get the

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performance that we saw in a review i mean Intel can hide behind their default

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turbo behavior which does consume a lot less power but the

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truth is that all performance mode is doing is allowing these unlocked 12

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series chips to turbo at around 240 watts forever which is a behavior that

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Intel enables one behavior i'm okay with by the way is signing up at

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Floatplane.com for exclusive videos and behind the scenes like the extended cut

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of our call me chris collab back to until 12th gen though you

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shouldn't have to spend an extra several hundred dollars just to keep your 600

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CPU at a reasonable temperature under load but since you do it's still too

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early to say how much the copper thermosyphon will cost but the original

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was around 170 so expecting a small

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increase from there it's actually looking like a pretty darn good solution

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but it's not perfect RAM clearance is pretty good but it's

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going to cover up any RGB modules you might have and you can forget about

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installing this over top of Corsair dominator style dimms we've also

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complained to their team about their smooth standoffs and they're considering

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adding some knurling or striping to help install or remove stuck bits now that

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motherboards are getting so crowded around the CPU socket area another

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annoyance we really had to screw this thing down tight to ensure good contact

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that's even with the updated bracket and with the frame though it's a pretty easy

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to use mounting solution otherwise and finally we're hoping that the teammate

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ice giant can sneak i don't know what to call it but a bit more tolerance for

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user error into the design before it starts shipping worldwide it can be a

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little bit finicky to get a perfect mount on that subject i would strongly

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recommend against shipping your system with one of these already installed in

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it that is a key benefit of aio liquid coolers that can't be ignored

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not nearly as much weight on the socket you know what else you can't ignore our

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signing up if you guys enjoyed this video make sure to check out the 6.9 gigahertz CPU video

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that splave helped us out with that was a lot of fun

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hopefully it makes it to market without costing too much more than the old illuminate

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i'm gonna just snap one day