[Official] AMD Ryzen DDR4 24/7 Memory Stability Thread - Page 276 - Overclock.net - An Overclocking Community

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post #2751 of 2790 (permalink) Old 08-11-2019, 08:24 AM
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My daily 3600 tight timings are stable when I use a fan to cool my RAM, but throw errors when I don't. I would say the errors start coming around mid-40*C.

And RAM is absolutely capable of running at higher temps when left at stock or close to it, but when you push RAM to the edge temp becomes a factor. And since many folks are trying to run their RAM at the very edge the temp that starts to become problematic can be pretty low. So yeah it's anecdotal evidence that points to 42*C, but it's not a rule. Obviously not if someone can run their RAM at higher temps. But if someone is running their RAM at higher temps then they may find some more performance if they lowered their temps.

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post #2752 of 2790 (permalink) Old 08-11-2019, 08:38 AM
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Quote: Originally Posted by Streetdragon View Post
Ok..... hope you understand it now. I dont think so......

Run it at 90° if you want. What ever,
BUT under 40-42° the rram is more stable and can run tigher timings/ higrer speed becasue colder = more voltage efficent = more stable.
CPU work this way, GPU work this way and ram work this way.....
You need a water cooling to keep your ram below 42C Normally my 4x16 3200/14 are working in the range 45-55C stable 24/7
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post #2753 of 2790 (permalink) Old 08-11-2019, 08:42 AM
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Quote: Originally Posted by Grin View Post
You need a water cooling to keep your ram below 42C Normally my 4x16 3200/14 are working in the range 45-55C stable 24/7
Well I wouldn't say you have to go that far. With my 2x8GB kit a fan in front of my RAM keeps it normally below 40*C.
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post #2754 of 2790 (permalink) Old 08-11-2019, 08:52 AM
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Errors coming because of undervoltage. Just increase the dram voltage. Dram chips is not a magic things and as chips in ssd and nvme can work normally till 70-75C
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post #2755 of 2790 (permalink) Old 08-11-2019, 10:20 AM
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Quote: Originally Posted by Grin View Post
You need a water cooling to keep your ram below 42C Normally my 4x16 3200/14 are working in the range 45-55C stable 24/7
nope^^ have 4 of 4 dimms in use. between the dimms is thermal paste and on the outer ram moduls are heatsinks.
Ontop is a 120mm fan that cools them down.


Which timings trigger the temp instability. dont know. im not a pro. i just lower timings and test

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post #2756 of 2790 (permalink) Old 08-11-2019, 09:04 PM
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Biostar just pushed 1.0.0.3AB for my GT7. Fun stuff. I was stuck at 3200 on 1.0.0.1, and 1600 FCLK.
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post #2757 of 2790 (permalink) Old 08-12-2019, 07:56 PM
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Just upped tRFC to 300, and DRAM Voltage. Wasn't stable for ramtest but enough for AIDA
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post #2758 of 2790 (permalink) Old 08-12-2019, 08:59 PM
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Quote: Originally Posted by savagebunny View Post
Just upped tRFC to 300, and DRAM Voltage. Wasn't stable for ramtest but enough for AIDA
Make your command rate 2T, you won't loose much just drop twcl a tad. You might have stability then.

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post #2759 of 2790 (permalink) Old 08-12-2019, 09:40 PM
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Contrary to the AMD DRAM post with 1st gen Ryzen, I'm finding increased stability at lower ProcODT values for 3800Mhz ram.

Is lower than 40Ohms safe? Currently at 34.3, down from 36.9 which had couple of errors in 6th test of memtest86.

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post #2760 of 2790 (permalink) Old 08-13-2019, 07:02 PM
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At last, one try 3800 mem and 1900 IF and it was a go, not just that but it is also stable.... SO happy.
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