Issues with memory recall and retention.
Issues with memory recall and retention.
Not long ago I chose to purchase a pre-built gaming desktop from newegg.com. I went with the ASUS ROG Strix GL10DH because it offered a good price. It was supposed to support DDR4 2666 MHz, but when I checked via CPU-Z it displayed 1330 MHz. In Task Manager it seems the actual speed isn’t showing correctly. I found information suggesting that most systems need manual BIOS tweaks—like enabling AI Tweaker or using XMP/DOCP—to push RAM to its full potential. My ASUS support rep confirmed that my motherboard doesn’t have this capability and explained that the BIOS can’t adjust the frequency beyond what’s set by the manufacturer, especially since my RAM maxed out at 2666 MHz. I’m wondering if there’s a way around this limitation or if the BIOS is intentionally restricting performance. I’m hoping to get the original speed and enjoy the higher clock speeds of Ryzen. The CPU-Z and BIOS both indicate the same motherboard model, but an ASUS article mentioned it’s actually a special variant of the Prime B450M-K. If you search for that board on their site, you’ll see its BIOS includes AI Tweaker. I’m puzzled as to why my BIOS lacks this feature despite the specs. Could it be due to a chip-level restriction or a software lock? I’ve seen some discussions suggesting possible workarounds with special chips, but I’m not sure if that’s feasible. I’ve attached some images and links for reference—please let me know if you need more details. Here are the purchase link and specs: https://www.newegg.com/asus-rog-strix-gl...6883221574&source=region&nm_mc=knc
The calculation is accurate and the system is operating properly.
DDR operates at double data rate, so values need doubling—1330 times two equals 2660. The drop to 6MHz likely comes from the clock not hitting exactly 100MHz.
Expanding the details to clarify for the audience: DDR4 refers to Double Data Rate. It indicates that the RAM executes two tasks per clock cycle. Although the actual clock speed is around 1333MHz, doubling the operations per cycle results in an effective speed of about 2666MHz, which is how it's usually presented. Also, the support representative you spoke to seems to be misunderstanding the technical details.
The diagram you mentioned is accurate. DRAM frequency relates to FSB, and in your image a 3:40 ratio applies. With BCLK around 100 MHz, the actual clock might be slightly lower—like 99.9 or 99.8 MHz—and this affects the displayed RAM speed, which could appear at 1330.66 MHz instead of exactly 1333.33 MHz.