What is memory clock speed

Fast RAM: This is how important the RAM clock is for the gaming PC

Sebastian Schenzinger

The RAM is something like the short-term memory of a computer. In this guide you can find out what role the clock and the latencies of the main memory play, especially in games.

EnlargeThanks to the XMP profile, overclocking the RAM, such as the G.Skill Trident Z Royal, is easy.

Current CPUs from AMD and Intel now support working memories ex works with quite fast clock rates, which amount to up to 3200 MHz. In addition, higher clock frequencies are no longer unusual - in these cases the use of a special profile allows the RAM to be controlled correctly. In order to maintain these clock rates, however, you have to make a setting in the BIOS. We have tested for you how much the clock speed and the latency of the main memory affect the gaming performance of your computer.

Where does the value for the maximum supported RAM clock come from?

The specified values ​​for the maximum RAM clock often differ greatly between the processor providers and the manufacturers of motherboards. In order to guarantee the permanent use of a computer, the JEDEC, an organization for the standardization of semiconductors, has specifications for the main memory. These concern, for example, the memory clock or the supply voltage. In order to ensure maximum stability, the CPU developers adhere to this. In the following table we have compiled the last CPU generations from AMD and Intel for you, including the RAM clock rates specified by the manufacturers.

CPU socket

Processor type

Supported RAM Clock

Intel 1200

Core i7 / i9-10000

2933 MHz

Intel 1200

Core i3 / i5-10000, Pentium Gold, Celeron G

2666 MHz

Intel 1151 v2

Core i5 / i7-8000, Core i5 / i7 / i9-9000

2666 MHz

Intel 1151 v2

Core i3-8000, Core i3-9000, Pentium Gold, Celeron G

2400 MHz

Intel 1151

Core i3 / i5 / i7-7000, Pentium G, Pentium Gold

2400 MHz

Intel 1151

Core i3 / i5 / i7-6000, Pentium G, Celeron G

2133 MHz

Intel 2066

Core i9-10000

2933 MHz

Intel 2066

Core i5 / i7 / i9-7000, Core i7 / i9-9000

2666 MHz

Intel 2066

Core i7-7000

2400 MHz

AMD AM4

Ryzen 3/5/7/9 3000

3200 MHz

AMD AM4

Ryzen 3/5/7 2000

2933 MHz

AMD AM4

Ryzen 3/5/7 1000, Athlon

2666 MHz

AMD AM4

Athlon X, Ax-

2400 MHz

AMD sTRX4