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post #1 of 28 (permalink) Old 09-12-2019, 03:55 PM - Thread Starter
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Overclocked ram gets hot?

Is there something wrong with my config or the dimm heatsink? (1 stick have like 1cm clearance at best, but still not touching D15 fan).
DIMMS are 3600 c16-17-17-18 1.35v, i run them at 3800 c15-16-17-15-30-45 1.46v.
I am 12000 sec stable under google stress test but while gaming rams get into 51 celsius and thus crashing the game.
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Last edited by Synoxia; 09-12-2019 at 04:00 PM.
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post #2 of 28 (permalink) Old 09-12-2019, 04:00 PM
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the more aggressive your RAM OC is the more sensitive it'll be to temp. either back off the OC or get better airflow. I'm at 1.5v and generally I'm 40-45c.

plus 12000 seconds doesn't mean you're stable. I've failed after the 8 hour mark plenty of times.

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post #3 of 28 (permalink) Old 09-12-2019, 04:01 PM - Thread Starter
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Quote: Originally Posted by The Pook View Post
the more aggressive your RAM OC is the more sensitive it'll be to temp. either back off the OC or get better airflow. I'm at 1.5v and generally I'm 40-45c.

plus 12000 seconds doesn't mean you're stable. I've failed after the 8 hour mark plenty of times.
Yes i know, thats why i am asking if there's something wrong with my airflow/dimm heatsink. I've updated the thread with case photo.
With GSAT? or HCI?

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post #4 of 28 (permalink) Old 09-12-2019, 04:05 PM
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Have you tested the air temp near the RAM during gaming vs during ram stress tests? I wouldn't be surprised if the Vega 64 is exhausting a bunch of hot air into your case during gaming and it is rising the memory temps high enough to destabilize your setup.

As a quick test, try taking the tempered glass side panel off your case during gaming and see if you are still getting crashes/your RAM still hits 51C. Alternatively you can try putting a fan over the memory to get some airflow on them and see how that affects their temp.

Overclocked DDR4 can easily reach 40-50C when you start pushing 1.45V+ if there is insufficient airflow. This won't physically damage the chips, but it can corrupt your data if your memory is unstable at that temperature. Highly recommend you make a backup to limit data loss.
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post #5 of 28 (permalink) Old 09-12-2019, 04:13 PM - Thread Starter
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Quote: Originally Posted by shellashock View Post
Have you tested the air temp near the RAM during gaming vs during ram stress tests? I wouldn't be surprised if the Vega 64 is exhausting a bunch of hot air into your case during gaming and it is rising the memory temps high enough to destabilize your setup.

As a quick test, try taking the tempered glass side panel off your case during gaming and see if you are still getting crashes/your RAM still hits 51C. Alternatively you can try putting a fan over the memory to get some airflow on them and see how that affects their temp.

Overclocked DDR4 can easily reach 40-50C when you start pushing 1.45V+ if there is insufficient airflow. This won't physically damage the chips, but it can corrupt your data if your memory is unstable at that temperature. Highly recommend you make a backup to limit data loss.
I have a spare 92mm fan. What if i put it on top? Could it make a difference in ram temps? I run at capped fps actually... my vega barely hits 65c and i dont have fan spinning that much. Like 45% at 69c but usually doesn't reach that...

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post #6 of 28 (permalink) Old 09-12-2019, 04:20 PM
Stock is too casual~
 
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You could reverse airflow
Top and back Intake to cool VRMs and Rams - and front as exhaust
but it will get dust from the back
Looking at that setup, you would have to rotate the Cooler Fans too
- else yes, a fan at the top helps ram a lot
Every tiny bit of airflow helps transport heat out of this dimms heating up by the cpu and gpu nearby

If you are too lazy, slow down front intakes, and put some slow rpm top intake (over the rams)
oor speed up front intakes and put a slow (450-600rpm) top exhaust (closer to the back exhaust)
I would rotate that airflow tbh to cool VRMs , and RAM unless you have strong enough top exhaust fans ~ but that's just me

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post #7 of 28 (permalink) Old 09-12-2019, 04:59 PM
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yes

more volts, more clocks, more work, more heat.

just try to move more air over them.

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post #8 of 28 (permalink) Old 09-12-2019, 06:01 PM - Thread Starter
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NVM in the end i've just put silent wings 2 on top of the 2 industrial ppc on the front, probably not going to make a difference anyway but whatever... the only "aesthetically acceptable" solution would be switching to a case with better airflow.

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Last edited by Synoxia; 09-12-2019 at 07:38 PM.
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post #9 of 28 (permalink) Old 09-12-2019, 07:39 PM
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good thing looks don't lower FPS and only you see it

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post #10 of 28 (permalink) Old 09-12-2019, 08:59 PM
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Quote: Originally Posted by Synoxia View Post
Is there something wrong with my config or the dimm heatsink? (1 stick have like 1cm clearance at best, but still not touching D15 fan).
DIMMS are 3600 c16-17-17-18 1.35v, i run them at 3800 c15-16-17-15-30-45 1.46v.
I am 12000 sec stable under google stress test but while gaming rams get into 51 celsius and thus crashing the game.
That means your Memory OC is not stable. As far as i know 51 C is still far from the maximum temperature DDR4 can handle, i heard/read DDR4 can take more than 90 C just fine.

I found in my experience that TestMem5 is very good at hunting the memory instability, but dont use the default profile. Use 1usmus_v3 profile, and if you want to be sure change to run for 10 or more cycle.

And if you OC the Infinity Fabric (3800) you must stres test the whole system too, since mem test application only stress the memory part. Use Real Bench, 3D Mark, blender, X264 stress test that use real workload.

Gaming is a good indicator too, if you found stuttering and crashing while gaming with OC setting meanwhile in a default setting you never found one, that means your system is not fully stable
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