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Cooling an i9-12900K with Hydro Series™ H100i RGB PLATINUM SE 240mm Liquid CPU Cooler


Jedispooner
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All,

Will the H100i RGB PLATINUM SE be effective enough to cool an i9-12900k on an ASUS Z690-I Gaming Wifi mITX? 

I already have the LGA1700 stand offs but I'm concerned the 240mm won't cut it.. anyone had a chance to test or doing similar?

I already own the H100i RGB PLATINUM SE from my current rig so I'm really keen to keep using it in my Corsair 280x case.

My thoughts are to buy a 280mm AOI which will max out my case.

Cheers

Steve

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It's going to depend on what you do with it.  If your intent is to manually overclock and then run folding 24/7, then a 240mm radiator likely won't be enough.  There isn't a ton of cooling difference between a 280 and 240, but the 280 does allow you run easier fan speeds for about the same coolant differential.  Also, while there is a not a lot of data out yet, every CPU there is will be voltage/temperature limited and not cooler constrained.  The difference in coolant temp between a 240 and 280 at moderate fan speeds might be a couple of degrees.  So for that 2-4C to matter, you need to be within 2-4C of your CPU temp limit.  Most people won't be running their brand new processor right on the edge of usability.  I do consider a 280mm to be a worthwhile upgrade, but mostly in terms of fan sound/noise and daily use. 

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7 hours ago, c-attack said:

It's going to depend on what you do with it.  If your intent is to manually overclock and then run folding 24/7, then a 240mm radiator likely won't be enough.  There isn't a ton of cooling difference between a 280 and 240, but the 280 does allow you run easier fan speeds for about the same coolant differential.  Also, while there is a not a lot of data out yet, every CPU there is will be voltage/temperature limited and not cooler constrained.  The difference in coolant temp between a 240 and 280 at moderate fan speeds might be a couple of degrees.  So for that 2-4C to matter, you need to be within 2-4C of your CPU temp limit.  Most people won't be running their brand new processor right on the edge of usability.  I do consider a 280mm to be a worthwhile upgrade, but mostly in terms of fan sound/noise and daily use. 

I will probably run a small voltage overclock / XMP 3.0 on the 12900K and RAM using the UEFI AItweaker but nothing manual and pressing. Overall the PC is used for VR flight sim and general high end gaming, not rendering or video processing.

My current H100i RGB PLATINUM SE is sat on an 1.4v overclocked i7-11700K which is a volcano of heat and the 240 manages to control 100°C spikes down to around 85°C in Cyberpunk and 3DMark CPU, Cinebench R23 etc. So maybe it is strong. That's using the default balanced profile. I did a 24 hour Prime95 on this with no errors.

The variation of 2-4 °C between 240 and 280 is interesting (thanks for this), I will take your advise and peruse a potential upgrade into a second hand H115i 280 to see how that makes a difference, failing that a 360 is out of the question due to case limitations.

Scan (computer dealer) in the UK suggested I try the brand new H100i ELITE LCD Display Liquid CPU Cooler, which would be "excellent" on the 12900K... really?! it's the same 240 rad I already have! I don't see this as a solution from what I already have, unless I'm missing something.

Well in the first instance over the coming weeks I will try my existing H100i RGB PLATINUM SE with a pea dot of Thermal grizzly kryonaut and see what.

If I see throttling, then it's up to the 280 for a 2-4 °C improvement.

 

 

Edited by Jedispooner
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3 hours ago, Jedispooner said:

Scan (computer dealer) in the UK suggested I try the brand new H100i ELITE LCD Display Liquid CPU Cooler, which would be "excellent" on the 12900K... really?! it's the same 240 rad I already have! I don't see this as a solution from what I already have, unless I'm missing something.

There were some minor tweaks to the cooling block on the Elite series vs the Platinum, but that is not something a user would be likely to notice outside a test bench.  If you decide to pick up a new 280mm, the standard H115i Elite 280mm is the same unit without the LCD top and a much lower price as a result.  The LCD display can be purchased as an add on if wanted and it works out the same for cost.  

 

I think the 11700K gives you a good idea of what to expect.  While the new 12900K is capable of pulling a lot of watts, that does not mean that is what your typical load will be.  Flight Sim games tend to be more CPU taxing,  but I would not expect it to be worse than that.  "Try and see" seems like the smart move and the greatest reduction in CPU temp usually comes from manually tuning the BIOS power and voltage parameters and not a cooling upgrade.  That might take a couple weeks to flesh out.  

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