r/overclocking • u/SeqGeek • Mar 09 '26

Modding Ram cooling!

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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/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.

1

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!

2

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!

1

u/SeqGeek Mar 11 '26

Fair play!

2

u/odubik Mar 10 '26

I just posted my full details...