Question Difference between DRAM frequency (or real clock) and frequency (or memory speed)

[sacerdose]

Hello,

I have been looking for an answer to this on the internet, but I have not yet found one.

I am wondering why there is a difference between my "DRAM frequency" (or "real clock") and my "frequency" (or "memory speed").

Here is my computer's specs (Speccy link):
-Computer/laptop model: HP 15s-fq1514na
-CPU: Intel Core i5 1035G4 @ 1.10GHz
-Motherboard: HP 86C9 (U3E1)
-Hard drive: 238GB SAMSUNG MZVLQ256HBJD-00BH1
-RAM: 2xDDR4 4GB 2666MHz Micron Technology 4ATF51264HZ-2G6E1 (8GB total)
-Operating system: Windows 11 Home 64-bit

I am wondering why I am getting DRAM frequency/real clock of 1067 MHz (2133MHz) while my RAM frequency/memory speed is 1333MHz (2666MHz).

I have read in some places that I'd need to enable XMP to allow higher RAM clock/frequency, but XMP enabling is not possible/doesn't exist on this non-gaming HP laptop. I have also read that DDR4 RAM base clock speed/frequency is 2133MHz.

However, I'm wondering if anyone knows how I can increase my RAM frequency up to 2666MHz with this machine/computer. My DRAM frequency also varies, sometimes going higher, but I'm wondering if/how I could keep it at a stable (or close to) 1333 MHz.

There was 1x4GB memory module of the above-listed RAM already installed when I got this computer, and I added another identical 1x4GB module.

Thank you! I've included links to relevant system images (CPU-Z, Speccy, AIDA64, Task Manager memory performance). Here they are as well, all in one.

sacerdose

 

[SkyNetRising]

I am wondering why there is a difference between my "DRAM frequency" (or "real clock") and my "frequency" (or "memory speed").

Your ram is running at 2133mhz effective speed.
Real speed is 1066mhz with two data transfers per cycle. So effective speed is 2x.

2666mhz is rated speed for your ram modules.
They can run at that speed, if ram overclocking is available.

However, I'm wondering if anyone knows how I can increase my RAM frequency up to 2666MHz with this machine/computer.

If BIOS doesn't allow this, then you can't.

I have read in some places that I'd need to enable XMP to allow higher RAM clock/frequency, but XMP enabling is not possible/doesn't exist on this non-gaming HP laptop.

If possible show screenshots for available options in BIOS.
You may have overlooked some ram configuration options,