BIOS restarts when XMP is activated
BIOS restarts when XMP is activated
Hello, I just upgraded my BIOS to version F62a but can't set XMP profiles for RAM up to 3000MHz. After rebooting, the BIOS resets back to defaults and the RAM is set to 2133MHz. I've also tried adjusting the multiplier manually in BIOS without success. My system has two different RAM modules—Micron and Samsung—both with the same model number but from separate manufacturers. The RAM is installed in slots 2 and 4, yet the hardware info lists it as rows 2 and 3. PC specs: AMD R7 2700X, Cooler Master 120mm AIO, Gigabyte Aorus Ultra Gaming X470 MoBo, Corsair Vengeance DDR4 3000MHz (2x8GB), GeForce RTX 3080 Founders Edition, Antec 750W 80+ Bronze PSU. Thanks in advance.
The CPU Z displays a frequency of 1499MHz on one stick, while Task Manager reports 3000MHz. The tRC value in BIOS was set to 59, but the hardware info shows 70. This discrepancy appears correct.
The RAM operates at 1499 MHz, equating to roughly 3000 MT/s, though this figure is often misrepresented as 3000 MHz. DDR technology allows for two operations per clock cycle, making it comparable to SDR RAM at 3000 MHz in performance. However, the proper measurement unit should be MT/s rather than MHz. In short, CPU-Z displays the real clock speed, whereas Task Manager reflects an adjusted value.
Could you clarify if you're asking about a specific problem and whether it's documented in the BIOS?