The original post: /r/overclocking by /u/Evravon on 2024-12-09 14:59:54.

To make things easier on everyone I’m going to post a full list of my specs.

Mobo: ASUS ROG Strix X870E-E Gaming

CPU: AMD Ryzen 7 9800X3D

AIO: Corsair iCUE LINK TITAN 360 RX RGB Liquid CPU Cooler

GPU: ASUS TUF RTX 4080 Super

RAM: Corsair Dominator Titanium DDR5 CL30 6000Mhz (2x32GB)

1 Corsair 1TB MP700 Pro M.2 NVME with built-in Air Cooler

1 Corsair 2TB MP700 Pro M.2 NVME with built-in Air Cooler

PSU: Corsair HX1200i Fully Modular Platinum ATX 3.1 1200-Watt

At first, when we tried to increase the RAM speed in the BIOS to the advertised 6000mhz (using the EXPO or AI Overclock or whatever it’s actually called), the PC crashed and would not boot again. We had to reset CMOS. We tried 5600mhz next and that seems to be working fine. However, someone was asking me for some of my timings today, and when I read them off that my FSB:DRAM was 1:28 in CPU-Z, they said that doesn’t sound normal. They said usually it’s something like 1:2 or 1:3 and 1:28 doesn’t sound right.

Is this true, and if so, is there anything I can do, other than go into the BIOS again and hope any settings I change don’t crash and prevent booting again?

EDIT: I forgot to mention, my RAM sticks are installed in slots A2 and B2. So slots 1 and 3 are empty.

EDIT 2: I am ok with it staying at 5600mhz, as I’ve heard that’s kind of a sweet spot. However, the 1:28 part being strange is what I am unhappy with. I don’t know what effect this has.

EDIT 3: While waiting on a response, I asked ChatGPT, lmao. I just wanted to see what an AI had to say about this. This was its response:

On previous generations of Ryzen or DDR4 systems, the common ratio would have been closer to 1:1 (synchronous mode with the Infinity Fabric). However, DDR5 introduces higher frequencies, making it harder for the Infinity Fabric (FCLK) to maintain a 1:1 ratio. As a result, modern systems often use asynchronous modes, where the Infinity Fabric runs at a lower clock (e.g., 2000MHz FCLK with a 2800MHz DRAM clock).

From my understanding, this means the ratio of 1:28 is actually normal for me, since my RAM is set to 5600mhz. Does this seem right?