How to control RGB RAM lighting

How RAM lighting is controlled

The lights on DDR4 and DDR5 memory are set through a low-level connection on your motherboard called SMBus. OpenRGB's developers note it's not normally meant for apps to use, and RGB software is the exception. That's why RAM lighting always needs some software, and why some boards need a BIOS setting first. Corsair, for example, says certain boards need SPD Write turned on in the BIOS before iCUE can reach the memory.

The easy way: RGB Engine

Normally every memory brand has its own lighting app, like Kingston's or G.Skill's, and each one only lights its own sticks. Motherboard apps can take over some memory, but Kingston notes effects can be limited.

RGB Engine lights your memory together with your fans, strips and cooler, whatever brand each is, from one small app. Your RAM becomes part of the look, and on supported memory it plays live, music-reactive bars instead of the stock rainbow.

Does your setting stick when the app closes?

It depends on the brand:

• Kingston memory ships with a default rainbow wave until you change it.
• A G.Skill support tech says the software has to be running, or the memory stays on its default rainbow.
• Corsair memory saves a hardware lighting effect that shows whenever iCUE isn't running.

Animated looks are different again. OpenRGB explains that software-driven effects are sent live, and some devices go back to their built-in effects when the app stops sending.

Which memory can run animated, music-reactive looks

RGB Engine talks to your memory through OpenRGB, which comes included. For animated looks that react to music, OpenRGB has to control each LED live. Its 1.0 device list shows which memory can do that:

From the OpenRGB 1.0 device list. G.Skill and other brands often use an ENE controller. RGB Engine was built and tested on four ENE memory sticks.

How to turn RAM RGB off

1. In RGB Engine, press Lights off. Every device goes dark at once, memory included, and Lights on brings your look back.
2. To keep lights off while the PC is asleep or shut down, use your motherboard's BIOS LED settings. See RGB stuck on rainbow.

A word of caution

Every RGB memory tool works through that same low-level connection. OpenRGB's developers say plainly that they use reverse-engineered protocols, that hardware has been damaged in the past, and that they can't guarantee it won't happen again. In 2025 Windows Defender also started flagging the old WinRing0 driver many RGB tools relied on, and OpenRGB moved to a signed driver called PawnIO. RGB Engine ships OpenRGB 1.0 with PawnIO.

Sources

1. SMBus access, OpenRGB.
2. OpenRGB README, OpenRGB (reverse-engineered protocols, damage warning).
3. Common modes, OpenRGB (live and built-in effects).
4. Supported devices, OpenRGB 1.0, OpenRGB.
5. Gaming memory support, Kingston.
6. Kingston FURY CTRL, Kingston.
7. Trident Z Lighting Control, G.Skill.
8. RGB pattern without the G.Skill app running, G.Skill forum.
9. How to set up hardware lighting in iCUE, Corsair.
10. What to do if iCUE can't detect your RGB memory, Corsair (SPD Write).
11. OpenRGB 1.0, IT-Connect (WinRing0 and PawnIO).