Question 4 x DDR5 sticks with an i5-12600K ?

[Samki]

Hello.

Recently I decided that I want to upgrade RAM on my pc with additional 16GB. I have 2x8GB ram Kingston Fury DDR5 5200MHz 40CL and I bought same 2 sticks and added them into slots.
Then I saw solid orange led on motherboard and found out the cpu doesn't work with 4x8GB ram that are 5200MHz or faster. The pc won't even boot up, only to bios where I can see RAM is only 4000Mhz even with XMP enabled.

My question is do I need to upgrade the cpu in order to use 4x8GB or is there also an option to choose between bunch of different frequency profiles in bios that goes from 3000 to 7000Mhz or even higher ?
I didn't want to try that without advice since Idk what would happen.

PC Specs
Mobo: MSI Z690 A WIFI DDR5
CPU: i5-12600K
GPU: RTX 3060TI GAMING X
Storage: 2 x Samsung SSDs
PSU: Corsair RM850

 

[Lutfij]

The sweet spot for the rams on any DDR5 platform(regardless of Intel or AMD0 is DDR5-6000Mhz. If I was in your shoes, I'd return the new ram kit, then sell the older kit as well, and drop in a 2x16GB DDR5-6000MHz tight latencied ram kit into slots A2 and B2.

If you want to work with your current sticks of ram, what BIOS version are you on? If you have a BIOS update pending, flash to the latest and then see if the issue persists.

As for this;
do I need to upgrade cpu in order to have 4x8 ?
Simple answer = no.

 

[QyInvoLing]

Sell all of them and buy two 6800c34 16G mem.

 

[Samki]

If you want to work with your current sticks of ram, what BIOS version are you on? If you have a BIOS update pending, flash to the latest and then see if the issue persists.

I will update bios and try again if it works but I doubt it will, the 2x16 solution seems probably better, but does CL matter cause now I have CL40 ram ?

Sell all of them and buy two 6800c34 16G mem.

I see on the motherboard website that dual memory supports only 6400MHz max .

 

[JayGau]

You mixed two different kits. This is a mistake. Even though they are the same models, they might not be fully compatible and this is very important when you try to run 4x ddr5 sticks.

But ddr5 sticks already come at high capacity so it's useless to run 4 sticks to have only 32 GB (I have 64 GB and only 2 sticks).

 

[Samki]

You mixed two different kits. This is a mistake. Even though they are the same models, they might not be fully compatible and this is very important when you try to run 4x ddr5 sticks.

No it's literally the same kit I bought 4y ago when I built this pc, 2 same kits with 2x8GB

 

[LordVile]

No it's literally the same kit I bought 4y ago when I built this pc, 2 same kits with 2x8GB

Doesn’t matter. They can be exactly the same model number bought at the same time. They’re not guaranteed to work. There’s a reason why they’re sold as a kit and that’s because they’re tested together. Mix and match kits could work, they could not work, they might work at full speed or they might only work at base speed.

 

[Roland Of Gilead]

The actual reason for the incompatibility is because, it's likely they are different silicon. Same model number, same speeds, but different silicon. That's why they don't work.

 

[Samki]

So I should maybe try buy another kit that may work ?

 

[COLGeek]

So I should maybe try buy another kit that may work ?

Yes. Sell what you have.

Get a matched pair of 2x16GB instead.

 

[Samki]

If you want to work with your current sticks of ram, what BIOS version are you on? If you have a BIOS update pending, flash to the latest and then see if the issue persists.

As for this;
do I need to upgrade cpu in order to have 4x8 ?
Simple answer = no.

I updated bios and tried again all 4 sticks but still had 4000Mhz and when I enabled xmp I got some error saying I need to repair my pc but after removing 2 sticks it's all good now.
So I probably return the kit I bought yesterday and sell the one I have and buy 2x16 6000.
Also could I use one of these frequencies that I have screenshoted when I was in bios ?

https://imgur.com/a/vH3PGDG

View: https://imgur.com/a/vH3PGDG

 

[geofelt]

Ram, even the same part number can be made of different components over time.
That is why a matched kit is needed to allow the ram to perform to specs.

If you want to try salvaging your purchase, try this:

First verify that the two new sticks are sound.
Install them and run memtest for a full pass.
Then set the two working sticks and set the speed in the bios to default.
Then, increase the ram voltage in the bios a notch or two.
Install the second pair and test. It often takes more voltage to run 4 sticks, and the extra voltage can compensate for some differences.
You may need to up the vlotage as high as 1.45v, possibly more.

 

[Samki]

The current 2 sticks are running on 1.25V but I don't know by what amount should I keep increating it so I change it to 1.3V, there is no graph I just have to manually put numbers in.
Also Im not sure If I want to play with voltages and all this stuff, for me it's maybe easier to just buy 2x16 If this is not working but I can give it a shot.

https://imgur.com/a/GwacA6F

View: https://imgur.com/a/GwacA6F

 

[bill001g]

Go watch one the many videos on youtube that show factory tours of memory manufacturing. They test that the chips themselves that go onto each memory sticks are compatible with each other as well as testing pairs of memory sticks to get the closet match. Of course they take all the really good ones out and package them as more expensive ones so it greatly reduces the ability to overclock the memory. It is fairly surprising how much variation there is chip to chip cut from the same wafer. Chips cut from wafers manufacture at different date are going to be even more unlikely to be matching