Hello,

I’m struggling with my memory kit (4 stick of Gskil 16gb each) running on my Evga z690 Classified

When i install slot 2&4 it runs well with Xmp enable (6000mhz) However when i tried to run 4 sticks at the same time it never get over 2000 mhz. I tried many ways such as turning on Xmp, set gear 4… same result can’t boot in window
Default all setting it boots to window but all 4 stick memory only run at 2000mhz

How can i get it run at 4800 mhz with 4 slot ?

I'd also like to know exactly what model of memory sticks you're using. 

Hmmm...with a 13700k I would expect you to get at least 4800 to work, possibly a bit more.
 
Did you update the BIOS on your z690?

I updated the bios to version 2.12 and nothing worked

Cool GTX

maxumi
I’m using 2 kits of Gskill TridentZ bus 6000 cas 36 and the cpu is 13700k

Even Gskill says - if you mix 2 sets of RAM, the results are not guaranteed & results could be slower than advertised.


I'm not saying mixing ram kits it never works; just saying it is not guaranteed to work
 
FAQ - DRAM Memory - G.SKILL International Enterprise Co., Ltd.
(excerpt)
- I want to install more memory, in addition to my existing memory kit. What are my options?
 
"By mixing memory kits together, there may be compatibility issues such as unable to boot or unable to operate at rated specifications.

Each of our memory kit are thoroughly tested to ensure compatibility within each memory kit. And because we have not tested our memory kit with your existing memory kit, we cannot guarantee compatibility when multiple kits are used.

Please also note that the G.SKILL QVL applies to single kit compatibility only, so mixing two or more of the same memory kit is not recommended."
 

that is one lame manufactures answer, they know just about every ATX board comes with 4 slots, but yet they dont test for that, that is nuts. i did get my 4 dimms to boot, at 2000, both kits have the exact same part number and lot code, like literally off the same production line on the same day but they wont run advertised speed. i should have stayed with corsair to be honest. 
 

What settings did you try changing? I have a Z690 Classified and a Z790 Classified, and have had decent luck getting 4 sticks (6000 MT/s, CL36) to run on both (Z690 at 5600 and Z790 at 6000 with XMP), but had to increase VSA to be stable at anything far over the board default 4000 MT/s.

It might be worth making some changes incrementally, like starting at lower speeds and then increasing in smaller increments. When I got my Z690 classified up and running I took it in three steps; I first increased VSA and saved BIOS settings, second turned XMP while simultaneously overriding the memory speed to stay at 4000 MT/s, then finally increased memory speed. Multiple incremental setting changes, each with their own save and reboot. It's also definitely worth noting that memory training may take quite a bit longer when trying to do this, so it might seem like it isn't working when still trying to train for several minutes.

If anybody sees anything wrong with anything I said please correct me. Just sharing my own experience, but I don't tweak memory settings much and could be giving bad advice.


While on this topic, you definitely would be better off with a 64GB kit of memory instead of two 32GB kits. I'm only running this because I had EVGA Bucks when the program was ending and just decided to go for it with two of the kits EVGA had in stock for an astronomical price. As somebody trying to run 4 sticks of ddr5, I want be the first to say that this isn't a great idea.

ObscureEmpyre
If I had a dollar for every time someone mentioned issues with populating all four memory slots…

Motherboard manufacturers really ought not be designing boards with more than two slots these days, especially with how much memory capacity has increased over the years.

The integrated memory controller in the CPU also has a lot to do with speed and stability. 

ObscureEmpyre
Precisely, and many IMCs can’t handle all 4 slots populated when there are only 2 channels. Even if T-topology is used in a motherboard’s architecture, that’s still not a guarantee of stability.

That is correct. A CPU which recommends a maximum memory speed should work with that memory speed. Anything above that is never guaranteed. Personally I prefer only two DIMMs even if the motherboard accepts four DIMMs. 

maxumi
Thank you for all your help. I've just bought another kit of 2 stick memory (32gb each). It runs so well so far with xmp 6400Mhz stable

Good news. Thanks for the update. 

GUITARSRUSINC
so you guys are basically stating that 2 kits with the same part number may or may not work on a motherboard and we should look for quad channel kits correct?
just checking as I have had my Z690 up n running 2 years and suddenly 2 memory channel slots stopped working.
thanks for the help

RAM Mfg state not to expect the same results if you mix multiple kits / Not Guaranteed to work @ advertised speeds
 
Not all CPU & MB combos support quad channel, you'll need to read your manual ... see if only Dual channel is supported by CPU & MB combo
 
Test 2 stick at a time or even 1 stick at a time to see if you have some bad RAM
 
Memory controller is inside the CPU, so could be a CPU or MB issue also ....
 
Make sure you have set the RAM Voltage, in MB BIOS - per the Mfg recommendations - many times the defalt Voltage even for XMP is too low