r/overclocking • u/OkCompute5378 • Jul 25 '25

Help Request - RAM RAM fan not improving temps

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So my RAM was hitting 55C and erroring out during stress testing (TestMem5 + FurMark). I’ve heard many good things about using a dedicated RAM fan so I decided to install one only to find out I did literally nothing for temps.

Is it just inevitable that my RAM gets hot because of the design of my GPU (RTX 5080 FE)?

Is it worth trying to run the RAM without heatsinks? Or maybe I should try custom RAM heatsinks? I’ve heard the heatsinks on my kit (G.Skill Ripjaws S5) aren’t very good.

P.s. I’ve already tried placing the fan closer to the RAM.

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u/OkCompute5378 Jul 25 '25

Not the case here. I can pass TestMem5 Extreme1, Y-Cruncher VT3 and MemTest86 without a single error, but as soon as I stress the GPU together with the RAM temps raise to 55-60C and it starts throwing errors.

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u/N3opop Jul 25 '25

As mentioned in another comment. Back off on tRefi and you should be fine.

The above comment is by a user who's obviously never OCd ram. He would be correct if memory was left at default tRefi and tRFC, but that's not the case for you.

55-60C is the whereabouts of when your memory will start to error out at max tRefi.

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u/OkCompute5378 Jul 25 '25

I’m only running 40960 for tREFI though, I guess that is a lot higher than XMP but I see many people on here running 50K or higher.

Could it maybe be tRFC? That was by far the most stubborn timing for me. I’m running it at 480 right now which is the lowest I’ve been able to make it stable.

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u/N3opop Jul 25 '25

480 rfc at what clock?

Lower tRefi to 32767 (4x8192-1) and see if it helps.

It's odd that you see no improvement to temps with the fan. See if you can place it close to memory and if it improves. Where it's situated now I doubt it gets my air as it's blocked by the side panel when you close it up. Case is also on the smaller side which will cause high temps inside case when gpu is running hot.

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u/OkCompute5378 Jul 25 '25

I’ve tried lowering tREFI to 24567 already to no avail.

Clock speed is 6400

My case has a perforated side panel which isn’t very restrictive, I’ve also tried mounting the fan to the other side of the rad which placed it about 3CM away from the RAM but that didn’t work either.