Hey all! I'm currently using a 9070XT as my main GPU and a 6650XT as a secondary GPU to help with lossless scaling and frame generation. My motherboard has PCIe 4.0 support on the second slot, and I've confirmed that my 6650XT is running at PCIe 4.0 x4 using GPU-Z. However, I've noticed that the second GPU is only using 1.1GB of VRAM under load, even when it's at 75% usage. It seems locked at 1.1GB and doesn't go below or above that at all. Is this normal behavior? Could there be an issue with the PCIe slot, the GPU itself, or is this just how it operates?
1 Answer
Your GPU will only use as much VRAM as it actually needs for your current tasks. Think of it like this: if you have a car with a trunk, you only fill it with what you need for a trip, not the maximum capacity every time. So your 6650XT only using 1.1GB right now doesn't mean there's an issue—it just means that's all the memory it requires for what you're doing!
Thanks for clarifying! I was concerned about possibly running out of PCIe lanes or something, but it sounds like that's not the issue. Just wanted to confirm that's normal usage.