Memory frequencies

[Aleddra]

I'm having a bit of a problem with my memory. It's 4800mhz, dual channel 16gb. Now, task manager detects it as 4000mhz, CPUID too.

Now i went to the BOIS, set it to 4800, computer wouldn't boot and started looping. Force closed it, reboot, i got a prompt to reset the settings, which i did.

Am i supposed to select 2400? I wouldn't try that again.

[🦊Λℚ𝓤ΛƑΛᗯҜᔕ🦊]

Publicado originalmente por C1REX:

I would disagree here. It often matters a lot and may have different consequences on different motherboards.

I think you're not understanding what I was trying to say. Maybe it's my fault for not writing my comment clearly. I will try again.

I was referring to this comment here:

Publicado originalmente por C1REX:

This is likely due to wrong dimm slots being used that are normally used for 3th and 4th sticks when aiming for quad channel.

They can not enable quad channel for ram on this motherboard just by putting the sticks in a different slot. There is no possible slot or memory module combination for this motherboard with this CPU that can ever enable quad channel mode. It's physically impossible. CPU-Z is just detecting the ram wrong for some reason.

[Aleddra]

I appreciate everyone's help, i really value your input. It just doesn't work and i want to let this go.

I'm not confident enough to flash the BIOS. Not with all the POST failures because of the memory.

It works,
badly,
but i can play my games.

These sticks are not on the compatible list for my mobo. It is the most obvious cause for these problems. If it becomes relevant, i will replace the memory with something compatible.

Thanks all.

[C1REX]

Publicado originalmente por 🦊Λℚ𝓤ΛƑΛᗯҜᔕ🦊:

They can not enable quad channel for ram on this motherboard just by putting the sticks in a different slot. There is no possible slot or memory module combination for this motherboard with this CPU that can ever enable quad channel mode. It's physically impossible. CPU-Z is just detecting the ram wrong for some reason.

OK. I see where I was wrong. I think the CPUs memory controller doesn't even support quad channel.

Publicado originalmente por Aleddra:

These sticks are not on the compatible list for my mobo. It is the most obvious cause for these problems. If it becomes relevant, i will replace the memory with something compatible.
Thanks all.

Being on the QVL doesn't mean that much. Being on the list doesn't guarantee it will work, and not being on the list doesn't guarantee it won't. My RAM isn't on that list, yet it works perfectly on an ASUS motherboard. Your memory doesn't work at all in the correct slots - A2, B2. That's problematic. Either you didn't fully insert them, which is very common and something I managed on my 3rd or 4th try, or your kit or motherboard is faulty. Such a slow speed seriously affects performance. You may not feel it now with such a fast CPU, but you might experience worse 1% lows and more stutters.

[Aleddra]

I'll update the BIOS later and keep you all posted.

[PopinFRESH]

The reason it shows as quad channel is because DDR5 is dual 32bit channels per-dimm for the 64bit data width.

[Ice Robertson]

I had the exact same problem and the guy at the computer shop couldn't figure it out, flashed the bios and everything.

in the end i went with a different brand and it worked fine.

The ram was kingston ddr4 3600mhz cl18 i replaced it with Corsair Vengeance RGB RS ddr4 3600mhz cl18.

Was on a gigabyte Z590 UD motherboard.

I think that guy who said some memory just isn't compatible with some motherboards is right.

[Bad 💀 Motha]

CPU-Z is the one showing all of that info wrong. The 1200/2400 is incorrect and so is the Quad Channel (this is due to the motherboard doing 2x32bit instead of 1x64bit) and because this is wrong, so is the 1200/2400 as it's actually 2400/4800

It's all over google searches; everyone has this issues with these newer Motherboards.

But above all, if that was me, first off return that junk RAM from where you bought it from. Go get some good GSkill DDR5-6000 CL20 if you can. And update the BIOS before you do anything or make any changes in the BIOS. After the BIOS update, reboot and go into BIOS and select Optimized Defaults; save & exit, go back into BIOS and disable ANY auto CPU OC'ing and then apply XMP for your RAM.

XMP on this MB is called AEMP II

[🦊Λℚ𝓤ΛƑΛᗯҜᔕ🦊]

Publicado originalmente por PopinFRESH:

The reason it shows as quad channel is because DDR5 is dual 32bit channels per-dimm for the 64bit data width.

That doesn't make it quad channel. All desktop class motherboards and processors are all dual channel, even with DDR5.

[Bad 💀 Motha]

Publicado originalmente por 🦊Λℚ𝓤ΛƑΛᗯҜᔕ🦊:

Publicado originalmente por PopinFRESH:

The reason it shows as quad channel is because DDR5 is dual 32bit channels per-dimm for the 64bit data width.

That doesn't make it quad channel. All desktop class motherboards and processors are all dual channel, even with DDR5.

Again it is due to how CPU-Z reads all of this. It assumes Quad Channel because of the 2x32bit; even when populating only 2x DIMMS

Use AIDA64 for this kind of thing.

[Aleddra]

https://imgur.com/a/hLH4hTF
It works. 4800mhz.

I set it up on a single channel. Slot 1 and 2. I asked a question on Amazon and that's what they replied.

And they lived happy ever after.

[Bad 💀 Motha]

When using 2x; put them in Slots 2 & 4

Overall why would you keep that RAM. It's no where near good enough for 12th Gen i7 or better. It's more for RAM to use for a locked i3 maybe. You want the CPU & RAM to be 1:1 ratio, or at least 1:2 if you can help it.

[🦊Λℚ𝓤ΛƑΛᗯҜᔕ🦊]

Publicado originalmente por Aleddra:

https://imgur.com/a/hLH4hTF
It works. 4800mhz.

I set it up on a single channel. Slot 1 and 2. I asked a question on Amazon and that's what they replied.

And they lived happy ever after.

Even if it works at 4800 mhz, it's slower than dual channel 2400 Mhz. You don't get any performance gain by higher speed if you're switching it from dual channel @ slower speed to single channel at higher speed.

As others have said you need to return that ram and buy a compatible kit for your motherboard. You should be able to run a ram kit at it's rated speed in dual channel.

[Aleddra]

I'm past the return window. The only way i was able to make this machine was to spread the cost over 3 separate months. Uh, motherboard. Then PSU/RAM/CPU fan. And then CPU. Recycling GPU and an older case. I think that's everything.

Are you telling me i should put it back to dual channel? I'm not exactly keeping up.

I understand i made a mistake by getting 4800 memory, but that's what i have right now. It's a bit like crakers. Buy 2 for 20% discount. I still need only one box, and it's cheaper like that.

[🦊Λℚ𝓤ΛƑΛᗯҜᔕ🦊]

Publicado originalmente por Aleddra:

Are you telling me i should put it back to dual channel? I'm not exactly keeping up.

Not necessarily. I'm just trying to explain that you are most likely at the exact same performance with either 4800 @ single channel or 2400 @ dual channel. Neither option is any faster than the other.

Publicado originalmente por Aleddra:

I understand i made a mistake by getting 4800 memory, but that's what i have right now. It's a bit like crakers. Buy 2 for 20% discount. I still need only one box, and it's cheaper like that.

I think your mistake was not checking the verified-memory-list for the motherboard and selecting a memory kit on the verified list.

[Phénomènes Mystiques]

XMP is known to break at times, especially for AMD systems but it is not unheard of for Intel.

When the XMP profile for whatever you want is loaded, look at the DRAM timings and CAS to see if they match the DRAM profile to XMP as I have personally seen mismatched timings and CAS which causes errors and will default XMP backwards.

The fix is to reflash the current BIOS revision. Always keep a few revisions, especially the last stable revision you know, on a FAT32 formatted USB stick.

I would check those timings...

The cause of fault? Windows Updates...