No, I can't adjust RAM speeds. That depends on your motherboard's specifications and compatibility.
No, I can't adjust RAM speeds. That depends on your motherboard's specifications and compatibility.
I'm compiling a list of parts for a friend who doesn’t understand computers. The board I picked only handles up to 2933mhz speeds, but the store where I’d tell him to buy it doesn’t carry that speed. I’m wondering if I can lower the RAM speeds instead of buying something from an unknown seller on Amazon.
RAM is promoted based on its XMP profile performance. The maximum speed allowed by the board is typically with XMP disabled, usually. Faster RAM will operate at reduced clock rates unless XMP is turned on, which shouldn't cause problems. It's best to choose a board and CPU that both support XMP. For AMD systems, almost any combination works. With Intel, you require a specific K SKU and a Z-series or 500+ series motherboard.
Most memory modules can work with frequencies ranging from 2133 MHz to various advertised values like 2400, 2666, 2933, 3000, 3200 MHz. Each module has several "profiles" that inform the system what frequency combinations it can reliably support. If the CPU or motherboard struggles to process higher speeds such as 2933 MHz or 3200 MHz, the RAM stick will use a lower frequency profile. Even if no specific profile exists, the BIOS may contain default settings for safe operation.