DDR5
DDR5
I recently assembled my PC and configured the XMP profile for my DDR5 RAM, but the system won't start and I need to reset CMOS to get it running. I'm aiming to use the advertised speeds. CPU: AMD Ryzen 7 7700X Motherboard: B650 AORUS ELITE AX RAM: 32GB (16GBx2) Trident Z5 6600MHz (F5-6600J3440G16GA2-TZ5RK) I also tried 64GB (32GBx2) Corsair Vengeance 6600MHz with no success. GPU: AMD Radeon RX 7900 XT
DDR5 6600 isn't compatible with AM5. The top CPUs only support 6400 fully stable, and most don't go beyond 6200 unless specifically designed. Adjust memory speed to 6400 and set SOC voltage to 1.3V, test it, and if it fails, try 6200 or 6000. The QVL lists 6600, but Gigabyte's listings are often misleading, making them unreliable.
EXPO* XMP is specifically designed for Intel. In my experience, it isn't as dependable. You won't achieve consistent performance at 6600MHz on AM5, and anything above 6000 will likely cause issues—maybe it works, but I wouldn't recommend it for stability. It's better to stick with 6000 and accept the limitations.
EXPO serves as a showcase for certain devices, though not every stick includes it. When a kit offers just an XMP profile, activate XMP regardless of the processor type. Conversely, if a kit is limited to an EXPO profile, enable EXPO even for Intel-based chips.
Today I picked up a fresh insight. In real life, it’s similar to comparing potatoes. Ultimately, they remain potatoes.