Need real consulting here as I don't understand what is broken in my system!!!

[PIRATA!]

Great to hear it is solved by using different model RAM.

I don't think there is enough evidence to assign blame with any certainty for the non working RAM. More testing on more platforms, or some very high end protocol bus analysers would be required to really know the true cause.

Well I have to say that you are right. Not only consumer tests should be done, but also deep electronic tests should be involved.

As I have to concentrate on my consumer side, I have done all the tests that were in my actual possibilities. I could have reiterate in asking amazon for another kit of the PC3600 rams, but I need my computer stable as I use it for working daily.


P.S.: Do you advise to make a MemTest86 test once in a while so to check if everything is ok?? If so...once in how much time??


Hope all my tests and writing all here would help some others in the future if similar situations would have occur.

Thank you very much for your help. Always the best.

[David (PassMark)]

Great to hear it is solved by using different model RAM.

I don't think there is enough evidence to assign blame with any certainty for the non working RAM. More testing on more platforms, or some very high end protocol bus analysers would be required to really know the true cause.

[PIRATA!]

In old machines the memory controller was part of the motherboard. On new machines it is part of the CPU. So you can't entirely rule out the CPU as being at fault. But typically a bad CPU would cause more errors that you are seeing. And CPU faults are more rare than RAM faults. And you had just 1 bit in error, which also points to a RAM error.

Given that turning off XMP makes it stable I'm still of the opinion that the setup is marginal (from an electrical and timing point of virw). Maybe it works with some sticks and motherboard (of the same make make and model) but not others.

Hello there!

The new kit of ram have arrived: G.Skill Ripjaws V F4-3000C15D-32GVR that are a 32Gb kit of PC3000 15-15-15-35 as mentioned before.

Installed them and made only one test with MemTest86: NO ERRORS!! Full 4 passes with no problem.

So both kits of G.Skill / Trident Z F4-3600C15D-16GTZ 15-15-15-35 that I have tested before (one from 2018 and the second from 2019) were faulty??.....or my motherboard is at its limit and do not digest such ram??

The nice thing is that now I'm with a PC3000 CL 15-15-15-35 kit of 32Gb or ram....and I'm pretty ok with them. On gaming there is no noticeable difference, and in computer use overall I have 16Gb of more ram.

At least I don't have a faulty motherboard.....or maybe yes??

Thank you.

[PIRATA!]

In old machines the memory controller was part of the motherboard. On new machines it is part of the CPU. So you can't entirely rule out the CPU as being at fault. But typically a bad CPU would cause more errors that you are seeing. And CPU faults are more rare than RAM faults. And you had just 1 bit in error, which also points to a RAM error.

Given that turning off XMP makes it stable I'm still of the opinion that the setup is marginal (from an electrical and timing point of virw). Maybe it works with some sticks and motherboard (of the same make make and model) but not others.

So it could be a random thing!! Pretty lucky I am...

I mentioned the CPU because I bought it from a guy as used, and he used to overclock it. I'm keeping it at stock frequencies now, never OC, and bought his as it is a K version and was at good price. The reason of the purchase is only related at using overclocked ram and activate XMP profiles.

I'll have the new ram coming in the next days. I hope to have some luck with them.

In case not, I really don't know if it would be the case to quit the testing and go for stock rams...or keep an OC ram and maybe lower the Timings...or go for testing another motherboard.

Ps: Could it be also a PSU issue? Can strange or inefficient power to the motherboard cause some domino-effect such to cause what I'm facing now?

Regards.

[David (PassMark)]

In old machines the memory controller was part of the motherboard. On new machines it is part of the CPU. So you can't entirely rule out the CPU as being at fault. But typically a bad CPU would cause more errors that you are seeing. And CPU faults are more rare than RAM faults. And you had just 1 bit in error, which also points to a RAM error.

Given that turning off XMP makes it stable I'm still of the opinion that the setup is marginal (from an electrical and timing point of virw). Maybe it works with some sticks and motherboard (of the same make make and model) but not others.

[PIRATA!]

For the minimum risk of problems consult the qualified vendors list (QV list) for the motherboard.

List is here for your motherboard,
https://dlcdnets.asus.com/pub/ASUS/m...ING_190218.pdf

They have the F4-3600C15D-16GTZ on the list, but not F4-3600C15-16GTZ. Not sure if these are the same model RAM or not?

Otherwise I don't think we have anything new to add, I'd just be repeating what I already said in previous posts.

Ok...I've tried to mix up the two kits so to see if maybe a stick could work with one from the other kit. Tried ALL the possible combinations....and nothing works. Only a combination gives me only 1 error in a full test (in attach).

Don't know if it is a false positive...but I need a rock solid system, so I guess to not consider that as a success either.


I've ordered another kit completely different, but still of these OC ones: the G.Skill Ripjaws V F4-3000C15D-32GVR that are a 32Gb kit of PC3000 15-15-15-35. I've chose them as they have same CL but lower Frequency, so to see if it might be realive or not. I don't expect any success.

I'll try to get a super stock JEDEC kit of ram as next if they will not work, so to see if its my motherboard.

I'm working for this to retrive a motherboard just same as mine so to make some tests on it, as I'll like to really go deep on this!!

Could it be also the CPU??

Please let me know what you think about my report attached.
Thanks!

[PIRATA!]

For the minimum risk of problems consult the qualified vendors list (QV list) for the motherboard.

List is here for your motherboard,
https://dlcdnets.asus.com/pub/ASUS/m...ING_190218.pdf

They have the F4-3600C15D-16GTZ on the list, but not F4-3600C15-16GTZ. Not sure if these are the same model RAM or not?

Otherwise I don't think we have anything new to add, I'd just be repeating what I already said in previous posts.

Heh..I have the F4-3600C15D-16GTZ. Yes that are mine. I forgot to put the letter "D" in their name in the first post. Before buying the ram kit I checked in the QV list of my motherboard, and as you can see that does not mean that it works.

As I don't have another motherboard to test them, I have to make my tests with what I have, so I have to go for some more generous kits.

Was asking if you know in your experience if there are some more centered Frequencies/CLs that are more reliable that others...so to check in my QVL if I can find something....so if maybe a PC3000 is historically more reliable than 3600...or if it is more a matter of CL where higher CLs are more reliable that lower CLs, regardless the Frequencies...

And regarding the kit composition, is it true that for example on a 32Gb kit, a 16x2 is better that 4x8?? Or is it the opposite...or a myth??

[David (PassMark)]

For the minimum risk of problems consult the qualified vendors list (QV list) for the motherboard.

List is here for your motherboard,
https://dlcdnets.asus.com/pub/ASUS/m...ING_190218.pdf

They have the F4-3600C15D-16GTZ on the list, but not F4-3600C15-16GTZ. Not sure if these are the same model RAM or not?

Otherwise I don't think we have anything new to add, I'd just be repeating what I already said in previous posts.

[PIRATA!]

So maybe your expensive C15 RAM should have been better tested by vendor and sold as C17 RAM. Or maybe ASUS motherboards aren't ramping the timing signals fast enough, which is why more voltage helps a bit. Maybe a combination of both.

Hi again!
Ok..Amazon sent me a replacing kit of exact ram...and they are faulty as my original one!! Here in attach the two tests that I've run on the new kit (the second test is made with the sticks switched).
Both tests have failed quite fast mostly on test8....does this give you any clue??
Could it be a motherboard settings problem? Like some CPU variables or voltage variables??

Tomorrow I'll try to mix up the sticks between the two kits, but I will not be able to keep any of those combination because I can't mix up the kits and will have to return the faulty kits as they were shipped....but will do the tests for seeing if that could be a solution.

QUESTION: if I'll decide to go for returning everything and go for another kit...as you know, what are the most stable type of rams extra Jedec's limit?
I mean..Jedec says that the limit is 2666 and that higher are OC...but which one of the OC's are those with less reported issues as you know? 2800? 3000? 3200?
And Speaking of CL? If I would like to focus on the less probable to be faulty, is it better to go for a stated 3600 CL17 or a 3200 CL15??

Thank you.

[PIRATA!]

Updated bios to last version. Set back everything to XMP active like before.
Now I don't have any errors on test6, but in test7, test8 (most of them here), and test9. Then quit test.
In attach result.
Any suggestions by reading the address range??

Will wait the new kit for further tests.
Thank you.

[PIRATA!]

Ok, just contacted Amazon and they are sending me a new kit as a replace. I'll have them both for some time, as I have 1 month for sending back the faulty one, so I'll make some tests.

In the mean time a new bios update for the motherboard was been released, so I'll test that as well.

I'll update you guys!!

[PIRATA!]

So maybe your expensive C15 RAM should have been better tested by vendor and sold as C17 RAM. Or maybe ASUS motherboards aren't ramping the timing signals fast enough, which is why more voltage helps a bit. Maybe a combination of both.

Yeah...

Could it be that these rams have ended their "working" period and now they work worst than before? Meaning that my motherboard is not the problem? I mean...what is it more possible here: the ram are in fault, or the motherboard is??

Second thing...rolling back to previous bios would it be something you would try??

Thanks!!

[David (PassMark)]

So maybe your expensive C15 RAM should have been better tested by vendor and sold as C17 RAM. Or maybe ASUS motherboards aren't ramping the timing signals fast enough, which is why more voltage helps a bit. Maybe a combination of both.

[PIRATA!]

Made also another test: same XMP stock Voltage of V1.350 (V1.344 in motherboard monitor) and set timings to 16-16-36 (instead that 15-15-35): No Errors at first pass!!!!

[PIRATA!]

Made another test: setting Voltage back to the XMP defaults, so V1.350 (that in the motherboard monitor is read like V1.344) and set timings to 15-15-36 (instead that 15-15-35):

- errors on test5 and test7 !!!!