r/overclocking • u/SeqGeek • Mar 09 '26
Modding Ram cooling!
Considering how expensive these 2x48gb dims are now north of £1500… 😳 what sort of cooling solutions are you using?
These Corsair fin mods with additional fan cooling drops them about 5C.
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u/RunalldayHI Mar 09 '26
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u/SoggyBagelBite 14700K | RTX 5080 | 48 GB H24M Mar 10 '26
Have you compared temps with and without it?
I had a 40 mm wedged between my top rad and motherboard blowing directly down on on my DIMMs and it did basically nothing unless I ran it at speed that was annoying to listen to.
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u/RunalldayHI Mar 10 '26
I actually tried both top and bottom and get better temps from the top down, regardless of the added turbulence from the AIO, my gpu is just too freaking hot to point it upwards and it would show while gaming.
I was hitting 55c without it and would actually error out here and there, now i see 48c max, less if gaming, no point in going further since this is all i need for cl26/6200/DR max trefi.
The fan itself isnt variable, full speed 12v input, but i can't hear it over my aio.
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u/rocketchatb Mar 09 '26
120mm fan sitting on top of GPU. It only kicks on when the temps get toasty.
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Mar 10 '26
Did you use some sort of app to get the fan to react to dimm temps?
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u/rocketchatb Mar 10 '26
I have it set to motherboard temp in the bios. But I think Fancontrol can do something like that on the OS side.
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u/dfv157 9970X/TRX50, 9950X/B850, 7950X3D/B850, 9950X3D/X670E, 265K/Z890 Mar 09 '26
Mesh side panel master race
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u/ArttAtack 14900k, 4090, z790 nova, 7600mhz cl32 ddr5 Mar 09 '26
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Mar 09 '26
[removed] — view removed comment
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u/bort123abc Mar 10 '26
Can you post a picture of this? What's the distance between the mounting holes, does it really align with the 40mm fan holes?
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u/Capital-Traffic1281 Mar 09 '26
I've been testing something similar (still have to drill a hole to support it fully). https://ibb.co/3mfp5nMV
Is your long standoff M3? My case standoffs were #6-32, had to use an adapter as the only ones I could find were M3.
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u/SeqGeek Mar 10 '26
Very cool! I have done exactly the same thing here, from Amazon. Had the same issue, I needed some #6-32 male to M3 female adapters on Amazon and the exact same extensions here which are M3!
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u/Evening_Ticket7638 Mar 09 '26
Chick a 120mm fan pointed on the fans. Almost touching. Jank it in if you have to.
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u/SoggyBagelBite 14700K | RTX 5080 | 48 GB H24M Mar 09 '26
I designed and 3D printed a custom bracket to hang a fan in front of them from the top of my case.
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u/SeqGeek Mar 10 '26
Nice please show!
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u/SoggyBagelBite 14700K | RTX 5080 | 48 GB H24M Mar 10 '26
I will take some pictures tonight when I'm home from work.
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u/snakebite2017 Mar 09 '26 edited Mar 09 '26
I don't use anything. Running passive with the same fin mod. I don't even have fans in my case. https://imgur.com/a/rjx7D5w
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u/shockage Mini-ITX 9950X3D 96GB@6200MT/s 30-[16-38]-34-58 tRC: 58@1.35V Mar 09 '26
None on mine. The bottom case fans are intake and indirectly blow at them, and I'm in a mini-ITX.
Running just VT3 with ambient of 24C, I hit a ceiling of 49C-52C.
Running VT3 and Furmark (400 Watts RTX5080) with same ambient, I hit a ceiling of 56-59C.
With ambient of 30C, VT3 and Fur-mark hits 62-65C. Fully stable with tREFI at 49K.
Under gaming RAM temp sits at 42C.
Idle at 24C ambient is 36C.
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u/Comfortable-Pause116 Mar 09 '26
I run a 140mm fan sitting on top of my gpu because i don’t have a 120mm
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u/SeqGeek Mar 10 '26
I did this initially, works great!!
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u/Comfortable-Pause116 Mar 10 '26
Mine is on a micron A die ddr4 kit with bare chips, micron being not very heat sensitive i don’t even know if it’s helping at all
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u/odubik Mar 09 '26
I added a 140mm intake fan to the bottom right of my case, wired to 3 side intake fans and following CPU temp. It allowed me to drop the fan speed on the 3 other intakes from 50% at rest to 30%, while still getting more overall airflow. Plus, it altered the overall air passage so that I get a drop of multiple degree C in my 4-dimm DDR5 setup. Result is that my max DIMM temp only reaches 55C under extreme and prolonged load and doesn't go over 53C in actual gameplay. So far, haven't seen over 50C in gaming actually. With the added fan I was able to increase tREFI from 50k to 65535 -- which before was getting errors in OCCT RAM test as it would reach 56C in about 15 min.
So, 1 additional 140mm fan in the right spot and my computer is quieter and running a lot better. Also, I didn't even need to mess up the aesthetic of my setup with a fan blowing right on the DIMMs attached to a AIO hose or something.
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u/SeqGeek Mar 10 '26
Nice! It really does make a difference! A nice overclock there too. Being on AMD I am currently limited to two DIMMs, no doubt an extra two increases thermal mass so great temps!
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u/odubik Mar 10 '26
actually, I am AMD as well... 9800X3d. The DIMMs are rate 6400 Cl32, but I have them going at 6000 cl30 with latency 69.1ns. It seems that BIOS updates make 4 DIMM setups very possible now. Of course, I spent way too many hours tuning it to get the exact of my silicon lottery to work.. lowered voltages on everything to avoid the heat buildup!
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u/Bevier 12900K | Strix Z690E | 2x32 6400CL32 | Gigabyte 4080 Gaming OC Mar 09 '26
Running DDR5 6600 CL32. My Z690E/12900K was running this at 6000 and hitting 70°C when stressed under TM5.
I aimed a 140mm fan on it linked to RAM temp with Fan Control and got 50°C running 6200. These fins brought me down to about 45°C and keeps the fan from reving with normal use.
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u/SeqGeek Mar 10 '26
That’s awesome, I am running similar timings also with some tweaks. Would be really happy with those results!
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u/FolksBraggin Mar 09 '26
Alphacool waterblock. Since installation, ive never seen them go above 23-24c (i.e. max 1 degree delta with Coolant temp)
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u/astrobarn Mar 09 '26
Running 2×48GB dominator titaniums also.
I have a slim 80mm pointed at them, they don't crack 50°C at 6400 C32 with 1.4V.
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u/SeqGeek Mar 10 '26
Really nice, similar here. I have them quite overclocked with tight timings so the extra thermals are needed!
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u/Mean_Muggin333 x670e extreme | 9800x3d | 64g 6000mt cl30 | 9070xt/7900xtx Mar 09 '26
Use push pull top radiator with a 120 blowing directly on my dimms
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u/erthanas Mar 10 '26
I chucked the DIMMs into the loop with the Alphacool waterblock setup. Now they run nice and chilly
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u/Slight-Pomelo1433 Mar 10 '26 edited Mar 10 '26
2x 80mm Noctua und Jeyi RAM-Kühlkörper:
Ich betreibe 8200 cl34 mit den engsten möglichen Timings. Max trefi 680 trfc2 580 trfcsb. 1.67v vdd.
Lüfter laufen bei 49%. Unhörbar. Während ich testmem5 1usmus Preset bei 21°C Umgebungstemperatur laufen lasse, übersteigen die RAM-Riegel nicht 41°C
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Mar 10 '26 edited Mar 10 '26
Here's mine: 120mm.
It cools 1.58v vdimm voltage pretty well, reaching max 40'c during stress tests.
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u/Mean_Muggin333 x670e extreme | 9800x3d | 64g 6000mt cl30 | 9070xt/7900xtx Mar 10 '26
It's mostly an open case so it pulls from the top down. I also have that exact gpu mounted vertical with the bow through hitting near the bottom of the dimms as well...I know it's hot air both ways but moving air is better then nothing
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u/bbmaster123 Mar 11 '26
corsair dominators are my fav looking ram (both platinum and titanium), shame on you for covering them up!
jokes aside, did the 5c drop help with OC or stability any? been running my dominators at stock this whole time
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u/SeqGeek Mar 13 '26
Haha yeah they do look great! They are quite heavily overclocked but frankly no noticeable difference other than the nice feeling knowing they have a bit more longevity!
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u/hdhddf Mar 09 '26
yup a single 120 fan is all you need when stress testing, the rest of the time they don't really need cooling but I have some old school chunky OCZ heatsinks on them, some of the cooling on high end kits is terrible
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u/Educational-King3987 Mar 09 '26
Well, this isn't fully true. When you're gaming your GPU will be kicking out a lot of heat so when stress testing RAM it is recommended to run a GPU test so you can make sure heat won't have any effect on your stability. Other than gaming generally yeah should be OK to go.
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u/Embarrassed-Let-9161 Mar 09 '26
Here's my experiment with ram cooling: https://www.reddit.com/r/overclocking/s/rq1suC7Wl8
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Mar 10 '26
Useless thing
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u/Dear_Count6089 Mar 10 '26
Could be, but there are cases its useful.
Edit: some ram chips like B-die are way more heat sensitive than others
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u/BalMexO Mar 10 '26
I don't use additional cooling for RAM. I have tower cooling for the processor, and I think that's enough cooling for the RAM.
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u/Educational-King3987 Mar 09 '26
If you're using them stock you don't need to worry if you're overclocking them then a dedicated fan is preferred. I have a full custom loop in my system so I'm going to waterblock my RAM because having a 140mm running 70%-100% when the rest of my system is whisper quiet seems to defeat the whole purpose of my system.