[SOLVED] RAM Height?

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Eamonn100

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Oct 23, 2020
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Is all RAM sticks the same height... Or what is the lowest stick height?

I'm looking to get under a NOCTUA NH-D15 Chromax cooler and need the option of using all 4 RAM slots.
 
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Eamonn100 said:
Is all RAM sticks the same height
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definitely not.
there is a very wide variety of heatsinks out there that will make some kits much taller.
Eamonn100 said:
what is the lowest stick height?
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you'd have to decide what speed and timings you want and then research the available kits' reported height.
all manufacturers provide the dimensions in their product specifications.
 
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Solution
JohnBonhamsGhost said:
any nice one definitely will.

i believe the NH-D15 has an option to raise the right fan a bit to help with clearance.
but the be quiet! Dark Rock Pro 4 comes with a bit more clearance as it is.
compare their product specs to see for sure, i may be mistaken.
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I've read this....

"High RAM compatibility in single fan mode
Thanks to its recessed lower fins, the NH-D15 provides 64mm clearance for tall memory heatsinks in single fan mode, making it compatible with most high end RAM modules on the market. In dual fan mode, the NH-D15 should be used with standard height RAM (up to 32mm).*"

What do they mean when they talk of single fan mode? Does that mean if I need 64mm clearance I can only use 1 of the cooler's 2 fans?
 
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Eamonn100 said:
I've read this....

"High RAM compatibility in single fan mode
Thanks to its recessed lower fins, the NH-D15 provides 64mm clearance for tall memory heatsinks in single fan mode, making it compatible with most high end RAM modules on the market. In dual fan mode, the NH-D15 should be used with standard height RAM (up to 32mm).*"

What do they mean when they talk of single fan mode? Does that mean if I need 64mm clearance I can only use 1 of the cooler's 2 fans?
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... sorry. If I need above 32mm clearance I can only use one of the fans?
 
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Lafong said:
That's the way I read it.

Have you checked all of the D15 models? There are several and I think they vary in RAM clearance specs.
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No I have not... but I will.

I didn't know there's different models. I have a look. Thanks.

Oh and having the 2 fans at your disposable, is best practice for the system/longevity, etc..?
 
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Eamonn100 said:
Oh and having the 2 fans at your disposable, is best practice for the system/longevity, etc..?
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I wouldn't say that.

Two fans will likely reduce temps only a very few degrees over 1 fan...in exchange for a little more noise.

You can experiment to satisfy yourself.

That's a very good cooler. If you aren't overclocking, maybe you don't need 2 fans. Keep one as a spare or use it as a case fan instead.

Some people are highly concerned over temps and would eagerly run 2 fans to drive temps to 60 rather than 63.

The next guy might not care about that.

If your system fails after 20 months, how would you ever know 2 fans would have had an impact on that?
 
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Eamonn100 said:
Interesting...

I asked about the 2 fans because I'll be getting a AMD Ryzen 9 5950X CPU.:hot:
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I use a D15 (the plain version not chromax) with an Intel 11900K which I run at plain turbo speed. The memory I picked

https://www.newegg.com/corsair-16gb-288-pin-ddr4-sdram/p/N82E16820236538?Item=N82E16820236538

has a very low profile heat sink and you can see in the pictures that it only sticks up a little above the circuit board. I mounted the inside fan on the D15 so that it sits directly on top of the ram heatsink and I get cooling good enough for the 11900K at turbo speed. So it is workable if you don't want to go for AIO water cooling.
 
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dwd999 said:
I use a D15 (the plain version not chromax) with an Intel 11900K which I run at plain turbo speed. The memory I picked

https://www.newegg.com/corsair-16gb-288-pin-ddr4-sdram/p/N82E16820236538?Item=N82E16820236538

has a very low profile heat sink and you can see in the pictures that it only sticks up a little above the circuit board. I mounted the inside fan on the D15 so that it sits directly on top of the ram heatsink and I get cooling good enough for the 11900K at turbo speed. So it is workable if you don't want to go for AIO water cooling.
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Excellent, thanks for that.

This is what the internet is for.👍
 
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dwd999 said:
I use a D15 (the plain version not chromax) with an Intel 11900K which I run at plain turbo speed. The memory I picked

https://www.newegg.com/corsair-16gb-288-pin-ddr4-sdram/p/N82E16820236538?Item=N82E16820236538

has a very low profile heat sink and you can see in the pictures that it only sticks up a little above the circuit board. I mounted the inside fan on the D15 so that it sits directly on top of the ram heatsink and I get cooling good enough for the 11900K at turbo speed. So it is workable if you don't want to go for AIO water cooling.
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In the read up of the cooler, it say 32mm clearance, but I've read your RAM needs 34mm. Is there a little play/difference in reality between the distances?
 
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JohnBonhamsGhost said:
this is a large dense heatsink that uses 2x fans in a push/pull setup.

if you remove the right-side push fan you will greatly decrease it's cooling capacity.

there would be no reason to use this level of cooler in that type of setup.
you'd be better off just getting a different cooler.
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I just looked it up as what I had seen from other coolers with a similar configuration is 1 or 2 fans made little difference if the fans are identical. What I found shows what I was expecting, makes negligible difference

View: https://youtu.be/k8YmxTIiJXs
 
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Eamonn100 said:
In the read up of the cooler, it say 32mm clearance, but I've read your RAM needs 34mm. Is there a little play/difference in reality between the distances?
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Yes, 32mm is the clearance with the fan precisely vertically centered; if you look at the picture on Noctua's website

https://noctua.at/en/products/cpu-cooler-retail/nh-d15/specification

you can see that there's room to raise the fan slightly so that it rests on the memory's heatsink and still cover all of the fins in the cooler's heatsinks. As long as your case is wide enough to handle a few extra millimeters above the cooler it shouldn't be a problem.
 
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i've run into similar situations many times where clearance in a build was an issue.

using a cooler like the NH-D15 with a single "pull" fan setup makes this single fan have to run ~30% faster to achieve even a few degrees higher than it's designed 2x push/pull configuration.

if you want more noise and higher temps then yes, it "Shouldn't make any difference".
 
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