Noctua Cools Down 700 W 56-core Intel Xeon W9-3495X on Air

[GFreeman]

Noctua has showcased its NH-U14S DX-4677 air cooler in action, cooling down Intel's 56-core Xeon W9-3495X at full load and drawing 700 W of power. While all-in-one (AiO) liquid coolers are popular these days, Noctua aim to show that air coolers are more than capable on handling even the most high-end CPUs, even at continuous load and without throttling.

While the video does not show the full details of the CPU settings, it is still an impressive feat, especially considering the high power draw, which suggest that the CPU was pushed way beyond its default settings for demonstration. The setup includes the aforementioned Intel's 56-core Xeon W9-3495X CPU, running on ASUS Pro WS W790E-SAGE SE motherboard with SK Hynix DDR5 EC8 RDIMM, and powered by Seasonic's PX-1600 PSU.



Bear in mind that the Noctua NH-U14S DX-4677 is a hefty CPU air cooler with large copper base, eight copper heatpipes, and large aluminium heatsink. It is designed specifically for Intel's LGA4677 socket Xeon CPUs, and it weighs 1136 g with fans. It comes with two Noctua NF-A15 HS-PWM fans spinning from 300 to 1500 RPM and providing 140,2 m³/h of airflow at 24,6 dB of noise.

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[Darmok N Jalad]

Imagine the air temp coming off the back of that thing. Maybe you could mod in a food dehydrator off the back end.

 

[NicklasAPJ]

Ofc... DId you see how large the cpu heatspreader is? It was the same with X299, it was no where hard to cool a 7980XE like it is 13900k. Size do matter. :O)

 

[maxfly]

The base of that thing is comically huge! 700 watts...

 

[DeathtoGnomes]

isnt there other coolers in this weight class?

I wonder if it comes with a support bracket like gpu supports.

 

[P4-630]

Those fans spin at 100%

 

[caroline!]

Good... AIO watercooling sucks.

 

[tabascosauz]

isnt there other coolers in this weight class?

I wonder if it comes with a support bracket like gpu supports.

WS U12S and U14S are not ultra heavy coolers. They just have a larger baseplate compared to their regular versions. Besides, server and WS sockets for both brands have large ILMs to provide structural support.

 

[mechtech]

Need some large server buildings and super computers up north here in Canada so we can make a greenhouse with free heating lol

 

[progste]

Long live tower coolers!

 

[ypsylon]

Exhaust air is probably enough to boil eggs on the spot.

I know Noctua are legends, but 700W on air. I've run enough of CPUs in my day to know what it means. Enough to say that 700W that's like 2 360mm 30mm rads of heat capacity on custom loop. Servers yeah, they don't care about 150dB noise from 100 of Delta 80mm thick fans, but even still there is visible trend for liquid cooling in enterprise segment. Intel has provisioning on new Xeons for 700W/socket. In 2/4 socket configuration that's nearly 3kW on CPUs alone. Insanity doesn't even come close to describing where we have arrived in terms of power requirement.

It's super ironic how people joked from all the PC furnaces we had, P1, P4 or 295, 480, 690 etc. It's 2-3x as bad now.

 

[progste]

Those fans spin at 100%

which is not that loud for these fans

 

[efikkan]

Good... AIO watercooling sucks.

Maybe not quite sucking, but I've been saying for years that they are not superior to tower coolers in most enthusiast builds, as even on mainstream sockets these tower coolers can keep up with 280mm AiOs. And the HEDT/workstation tower coolers are even more capable, thanks to larger surface area.

Also keep in mind that most benchmarks and reviews are conducted on open benches, while all of you will run your computers in enclosed cases. In most situation, case airflow will be the bottleneck, no matter how fancy the CPU cooler is. But once you have sufficient air flow, the tower cooler might end up performing even better than you think.

 

[Ferrum Master]

What's so surprising here? LGA4677 has twice the surface area to take the heat and transfer depending on what older CPU we take as a reference point?

These news are about sky is blue?

It is much harder to cool down a very powerful and small surface area like lasers and LED's not this thing.

 

[bobsled]

How long until it cracks the PCB traces due to huge amount of weight stress on the board? Removing heat from the case isn’t a small feat, which is why AIO units have distinct advantages here.

 

[progste]

How long until it cracks the PCB traces due to huge amount of weight stress on the board? Removing heat from the case isn’t a small feat, which is why AIO units have distinct advantages here.

Never? People have been using tower coolers of this size for 20+ years and they never crack PCBs unless you're shaking your case like maracas.

 

[lemonadesoda]

which is not that loud for these fans

Disingenuous "benchtest". They had the fan running free flow. There won't be much noise until you put it against the heat sink fins. THATS when you get, and when you should measure, the noise levels.

 

[progste]

Disingenuous "benchtest". They had the fan running free flow. There won't be much noise until you put it against the heat sink fins. THATS when you get, and when you should measure, the noise levels.

"Disingenuous" seems a bit of a strong word but here is another one with a cooler that should be identical to this one except for the base

 

[trsttte]

even on mainstream sockets these tower coolers can keep up with 280mm AiOs

Where those (and any) AiO take the lead is on heat soak capacity and dealing with spikes. Water will take a long while to start heating up and can deal with heat spikes (say you open a bunch of new tabs on the browser and then stay quiet) much better than a regular heatsink that will quickly need to ramp fans up and down. That's a great advantage on desktop where CPU loads are constantly changing.

I still prefer my low maintenance tower cooler, but I also set the fan ramp up time to as high as the bios settings would allow to avoid hearing getting the constant up and down

 

[freeagent]

How long until it cracks the PCB traces due to huge amount of weight stress on the board?

No chance of that happening if the kit was engineered properly.

Removing heat from the case isn’t a small feat, which is why AIO units have distinct advantages here.

No they don't.

 

[Vya Domus]

I somehow find it hard to believe it actually dissipates 700W.

If so I am more amazed about what a horrid piece of silicon Intel made rather than the cooler.

which is why AIO units have distinct advantages here.

The other being that with an AIO you can direct all the heat outside of the case, makes a difference if you have a high TDP air cooled card.

 

[unwind-protect]

The W9-3495X has a TDP of 350W and max turbo of 420 W.

 

[Redwoodz]

I am really surprised Noctua the company would release this video for promotion. The claim is completely unproven. Zero evidence is given and conditions it was run under. Really turns me off. I won't be looking to cool any cpu with any Noctua cooler.

 

[claes]

They say it’s running at TjMax in the comments, but no mention of clocks

 

[caroline!]

How long until it cracks the PCB traces due to huge amount of weight stress on the board? Removing heat from the case isn’t a small feat, which is why AIO units have distinct advantages here.

That's why backplates and solid retention mechanisms exist. It's mounting pressure that can damage the socket or board, I have a second PC with an old HP 775 mobo for TV stuff and older software in general and the mounting pressure on the cooler is mad, you have to push the bolts down with gorilla strenght and give them at least 5 turns so the heatsink stays in place and doesn't wiggles.

Exhaust air is probably enough to boil eggs on the spot.

mine doubles as free clothes dryer but 700W? boy