16gb DDR4 3600mhz already, going for another 16gb. Any issues on z370?

TonyTurbo78

TonyTurbo78

TonyTurbo78

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Hi guys.

I've currently got 16GB DDR4 Team Group 3600mhz (2x8gb) but I'm noticing in a few of my games now, especially Cities Skylines and Planet Coaster, I'm exceeding 16GB at times due to the amount of mods I run. So, if I wanted to throw in another 2x8gb of the same memory, populating all 4 dimms, that shouldn't be a problem should it with the dual channel memory controller? both groups of dimms will still work in dual channel correct? And do you think I'll still be able to run 3600mhz XMP with 4 sticks?

thanks.
 
Space Monkey said:
That's the stuff, should be fine :)
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Ok thanks for confirming. Ordered 2 days ago but not shipped yet. If it looked like a bad move from comments I would have cancelled the order.

So how does dual channel work with 4 sticks? Is it as simple as 1&3 2&4 pairing, with dual channel still working on each pair?
 
TonyTurbo78 said:
Ok thanks for confirming. Ordered 2 days ago but not shipped yet. If it looked like a bad move from comments I would have cancelled the order.

So how does dual channel work with 4 sticks? Is it as simple as 1&3 2&4 pairing, with dual channel still working on each pair?
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So if all of your ram is the same make and model, then it's still dual channel, and it doesn't matter which sticks go where as they are effectively all the same anyway :)
 
Space Monkey said:
So if all of your ram is the same make and model, then it's still dual channel, and it doesn't matter which sticks go where as they are effectively all the same anyway :)
Click to expand...

i'm sorry to say this is not true, in particular with the 8Pack set in question. it depends on how far apart you bought your kits, i bought one in late 2017 and another late 2019, and they are different chips with different SPD timings. currently i am having issues...ie failing memory tests at XMP. each set works fine in isolation...just not together.
 
facboy said:
i'm sorry to say this is not true, in particular with the 8Pack set in question. it depends on how far apart you bought your kits, i bought one in late 2017 and another late 2019, and they are different chips with different SPD timings. currently i am having issues...ie failing memory tests at XMP. each set works fine in isolation...just not together.
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Interesting, so are the main timings the same just not the rest?
 
under XMP the main timings are the same, the rest are mostly the same but tCCDL is different. i'm not trying to push things, i just want to run it at XMP (as i did with the original dual kit) and be done with it.

there's a pretty major difference in SPD timings though, as one is 2133 JEDEC (the older one) and the newer one is 2400! and the SPD entries differ accordingly!
 
@facboy Oh. My memory shipped today so I expect problems then. Nothing ever straightforward is it :p. Can you not just manually set the timings so each pair mirrors the other?
 
@TonyTurbo78 well it's the SPD/JEDEC timings that are different, three aren't set at all on the old set, and the one that is set isn't tunable on the Maximus X Hero anyway.

https://imgur.com/a/XxV8kxr

funnily enough i suspect there might be a temperature-related issue as it has only cropped up in the last few weeks as the weather has gotten warmer. the other reason i suspect the temperature is that when testing i've found that it seems to be fine for a while (1-3, even 7 1/2 hours once) and then it gets a single error, and then the next test it will be unstable almost immediately (within minutes), which if the errors are temperature-related could be heat soak eventually pushing it over the edge.

i'm still tweaking to see if i can fix it. i've upped the voltage a little as the mobo (if accurate) is only supplying 1.344 when set to 1.35, now at 1.36 it seems like it may be more stable.

you may not have any issues. i'm no RAM expert but at the end of the day these are Samsung B-dies which supposedly could be good well beyond 4000. so if you even get a problem, a slight voltage tweak may fix it, and if u can be bothered (i can't) you could go nuts and try to crank voltage, increase frequency, lower timings, all that :).

EDIT: FWIW not withstanding the SPD timings being different, Thaiphoon Burner reports that the Samsung B-Die (K4A8G085WB-BCPB) are exactly the same. which should be the important thing.
 
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facboy said:
@TonyTurbo78 well it's the SPD/JEDEC timings that are different, three aren't set at all on the old set, and the one that is set isn't tunable on the Maximus X Hero anyway.

https://imgur.com/a/XxV8kxr

funnily enough i suspect there might be a temperature-related issue as it has only cropped up in the last few weeks as the weather has gotten warmer. the other reason i suspect the temperature is that when testing i've found that it seems to be fine for a while (1-3, even 7 1/2 hours once) and then it gets a single error, and then the next test it will be unstable almost immediately (within minutes), which if the errors are temperature-related could be heat soak eventually pushing it over the edge.

i'm still tweaking to see if i can fix it. i've upped the voltage a little as the mobo (if accurate) is only supplying 1.344 when set to 1.35, now at 1.36 it seems like it may be more stable.

you may not have any issues. i'm no RAM expert but at the end of the day these are Samsung B-dies which supposedly could be good well beyond 4000. so if you even get a problem, a slight voltage tweak may fix it, and if u can be bothered (i can't) you could go nuts and try to crank voltage, increase frequency, lower timings, all that :).

EDIT: FWIW not withstanding the SPD timings being different, Thaiphoon Burner reports that the Samsung B-Die (K4A8G085WB-BCPB) are exactly the same. which should be the important thing.
Click to expand...

That's interesting, thanks for taking the time to write such a thoughtful and infornative response, it's really appreciated.
 
yeah...i wanted to avoid tweaking and testing and all that, i wanted to just plug it in with XMP and leave it. sadly did not work in this case.
 
@Space Monkey @facboy Well they are in and seem to be working out of the box. Set XMP defaulted to 3600mhz and no beeps are hangs. Just played some games, all seems fine. I might need to stress it for a few hours to make sure.

On a side note. Great design NZXT putting the pipes that side and forcing us to mount it this way due to the NZXT orientation. I know I could turn it off, and remount it 90 degrees but hastle lol. You guys think this is safe enough pushing away a little on the last memory stick just until I work out if these are working fine? There's not a lot of force pushing it away but enough for the AIO pipes and the memory heatsink to be touching.

dqPLTemh.jpg
 
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if it's just touching i think it's ok, i wouldn't be that happy if it was pushing the DIMM sideways. if it's vibrating at all you might find it rubs off the finish on one or both parts, which will make RMA a hassle if you have to.

try Karhu memory test, it finds errors in my DIMMs within an hour or so. though i'm a bit annoyed as my machine threw an error yesterday after 17 hours combined testing :S.
 
facboy said:
if it's just touching i think it's ok, i wouldn't be that happy if it was pushing the DIMM sideways. if it's vibrating at all you might find it rubs off the finish on one or both parts, which will make RMA a hassle if you have to.

try Karhu memory test, it finds errors in my DIMMs within an hour or so. though i'm a bit annoyed as my machine threw an error yesterday after 17 hours combined testing :S.
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Yeah I'm not happy either. Going to play for a few hours (everything seems spot on so far) then take out the AIO, turn it 90 and remount. Dont need the NZXT logo on anyway.

Now the question is, do I have any Grissly left lol

Found some. Thank god.
 
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