Trying to get my RAM 100% stable - Advice needed! (3950x, Trident Neo)

I've seen multiple examples of people running 64gb on the 3950x at 3600mhz or even higher.
Not doubting it ofc :)
What ram are they using?

I'm not sure the IMC is likely to be the problem though
I still think you should try one DIMM at a time, doing a memory test each time.
Yeah the easiest (but most laborious) route would be to memtest each stick at 3600 individually to exclude a dimm issue
 
Not doubting it ofc :)
What ram are they using?



Yeah the easiest (but most laborious) route would be to memtest each stick at 3600 individually to exclude a dimm issue


I just got an error at 314% using those test settings at 2400mhz.

I'll now try and do some tests using two sticks at a time and see if any errors show up then. Is this likely to be a CPU fault? Or much more likely to be RAM?
 
I'm not sure the IMC is likely to be the problem though, I've seen multiple examples of people running 64gb on the 3950x at 3600mhz or even higher.

Test with just 2 dimms in at xmp 3600 or whatever you were trying for that was throwing errors with 4 dimms, if it's stable with 2 then you know it's the imc though it might be worth checking both pairs to make sure there's not a weak one hiding in there.
 
Test with just 2 dimms in at xmp 3600 or whatever you were trying for that was throwing errors with 4 dimms, if it's stable with 2 then you know it's the imc though it might be worth checking both pairs to make sure there's not a weak one hiding in there.

So would that then mean I would have to RMA the cpu?
 
Not doubting it ofc :)
What ram are they using?



Yeah the easiest (but most laborious) route would be to memtest each stick at 3600 individually to exclude a dimm issue

Just tried 2 sticks, and went with XMP 3600mhz, and it got to 500% no errors. Going to try the next two sticks now. Really hoping it throws an error, otherwise I don't really know what I should do next.
 
He is probably referring to a damaged memory controller (thats on the CPU), but test now with your other 2 DIMM's.

BTW there is a Intel CPU diagnostic you can try also, but again try those other 2 DIMM's first.

https://www.intel.co.uk/content/www/uk/en/support/articles/000005567/processors.html


Currently on 200% of the second pair running at 3600mhz, no issues.

The only other thing that is different, is that the ram is now running at 52C, while when there is 4 sticks it runs closer to 60C or so. I wouldn't have thought a minor temp difference like that should matter (I think its well within spec) but its the only other thing I can think of.

I'll reply again at 500%, or if an error pops.

Edit: Also, is that pdt likely to be helpful? It's an AMD chip, that's newer than the last update of that tool..
 
Edit: Also, is that pdt likely to be helpful? It's an AMD chip, that's newer than the last update of that tool..

My bad, thinking you had an Intel CPU, it's late here! See if AMD have anything similar.

If these 2 other DIMM's pass, would you motherboard allow just 2 DIMM's in the other 2 slots?

It's possible there is an issue on the other 2 DIMM slots? Worth a shot of spraying those other 2 slots, but you must use electronic contact cleaner, just in case there is some dirt in them.
 
My bad, thinking you had an Intel CPU, it's late here! See if AMD have anything similar.

If these 2 other DIMM's pass, would you motherboard allow just 2 DIMM's in the other 2 slots?

It's possible there is an issue on the other 2 DIMM slots? Worth a shot of spraying those other 2 slots, but you must use electronic contact cleaner, just in case there is some dirt in them.

Yeh the second pair of ram has passed 500% and still no errors. This is at 3600mhz xmp.

I was just thinking that I would try using the other ram slots, just as a last ditch attempt to find the problem.
 
Yeh the second pair of ram has passed 500% and still no errors. This is at 3600mhz xmp.

I was just thinking that I would try using the other ram slots, just as a last ditch attempt to find the problem.

Yes try other ram slots if motherboard allows it.

Also don't think it's temp related as you had issues running at default speed, 2133 if I recall.
 
Yes try other ram slots if motherboard allows it.

Also don't think it's temp related as you had issues running at default speed, 2133 if I recall.

Hmm. So.

Two sticks in the other 'wrong' slots, and it didn't boot XMP. It cycled a few times, and then booted at the base default 2133. Not sure if that's just a motherboard thing cos it's the wrong slots though.

Running a test with them at 2133 in those 'wrong' slots, see what happens.
 
aaaand it threw an error.

But does that mean it's the CPU, or the motherboard?

It's one or the other. Things to try.

1) Do you have latest motherboard BIOS?
2) I would still spray out those DIMM slots where the memory is failing.

Other than this i'm lost as i'm an Intel person, need someone with AMD knowledge to know what to try next.

Do you have a spare AMD CPU you can try?
 
It's one or the other. Things to try.

1) Do you have latest motherboard BIOS?
2) I would still spray out those DIMM slots where the memory is failing.

Other than this i'm lost as i'm an Intel person, need someone with AMD knowledge to know what to try next.

Do you have a spare AMD CPU you can try?


Actually I do still have my 2700x. So I could swap it back in and try it. SUCH A PAIN IN THE BUTT but I guess it's the best solution before going to the next step of replacing the cpu or the motherboard.

Ill make another attempt at cleaning those slots too.
 
Actually I do still have my 2700x. So I could swap it back in and try it. SUCH A PAIN IN THE BUTT but I guess it's the best solution before going to the next step of replacing the cpu or the motherboard.

Ill make another attempt at cleaning those slots too.

Spray the slots with proper electronic cleaner, don't poke or rub anything on them.

I've had motherboards and laptops with random memory issues, spraying those contacts have resolved the issue.

BTW, Servisol Aero Klene 50 is probably the best, however anything that's marked for electronics use will also be fine.
 
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OK well, I'll pick up some cleaner spray from somewhere (amazon I guess), but as far as this test has gone -

Didnt boot XMP in those slots again (but the 2700x probably can't run them anyway), and it still threw up an error after 160% of ram testing. So it would seem it's not the cpu, but is either the board or the ram?

Am going to test these same sticks again in the proper slots but with this CPU.
 
UPDATE:

Curiouser and curiouser. I just had these two sticks of ram throw an error back in the proper slots.... I'm doing another test now, but if it happens again then it's not the motherboard or the chip (i guess) but is the ram having a really... obscure issue?

Edit: I'm going to retest in both sets of slots, but with a bump in voltage as I'm wondering if the board is defaulting to a really low undervolt for some reason.

But that will have to be tomorrows job, as it's gotten very very late. I'll report back though. I really thought I'd solved it as a board problem, but now I'm not so sure.
 
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Do you have good case ventilation as 50-60c is quite hot for ram and can make it throw a random error, try rigging up a fan over the dimms to see if that helps.
 
Do you have good case ventilation as 50-60c is quite hot for ram and can make it throw a random error, try rigging up a fan over the dimms to see if that helps.

For the latest tests I've been running with the side of the case off entirely cos I've been doing a lot of swapping around.

One pair of sticks has now thrown 6 errors when in the 'wrong' slots, and 1 error in the 'right' slots. (There's a small chance it was a random error, unlikely as it might be).

I'm now back to testing the first set of sticks again, which got up to 850% with zero errors in the 'right' slots. I'm currently testing them in the 'wrong' slots. IF they get 0 errors again, then it's a RAM problem (I would think). If they throw an error in the wrong slots, then it's probably a motherboard problem (or I have two faulty ram sticks, which seems unlikely.

At least I've ruled out the CPU (most likely, anyway) as these tests have been on my 2700x instead of my new 3950.
 
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