Hi guys!
I purchased a few months ago a new AMD PC, with a 7700 CPU, 32GB of RAM and a 7800XT GPU. I’ve noticed since, that my electric bill has been increased (compared to when I used an Intel i7 6700 with a 1070 GPU), I was wondering, is it possible to use a hybrid GPU setup kinda like laptops, where the iGPU from the CPU is activated for normal tasks, and the discrete GPU is only activated on demand? Would the GPU be unpowered/sleeping in the meantime?
…all this from a Linux perspective, I’m running Nobara 40.
Thanks!
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I don’t think that’s your PC. I actually measured how much power my PC and my monitors consumed in a week and used that to calculate how much that would be for the year and compared to the total used energy for that year. My PC setup was only a small fraction of the yearly usage. The vast majority of your energy is gonna be consumed by things like fridges, ovens, heating, water pumps, etc.
Well I used to turn off the monitors and leave it running…And the last month I started actively suspending it, and the bill went down. I’m waiting to setup some sockets with smart power measuring features, and I’ll have more reliable data on power consumption…but I’m afraid I might need to wait a few days on these.
dont turn off your monitors.
The power on/off cycles significantly reduce their lifespan vs just leaving them on.
The pennies you save on the power bill aint gonna add up to enough to replace the monitor more often.
Any halfways decent GPU driver and device firmware will put it into a low power state when it’s idle.
Sadly ours isn’t in this regard.
I have an RTX 4090 and use the proprietary driver. It works just fine on Fedora and Windows 11 alike. So IDK what to tell you. AMD and Intel are even easier since the drivers are baked into the Linux kernel. I have an AMD iGPU in my desktop and an Intel one in my laptop. Both work just fine and handle power management correctly.
It’s nice that it’s well integrated but that doesn’t mean it works well.
Power management of AMDGPUs has always been an absolute shitshow from my perspective.
With dGPUs they’ve now resorted to always running them in the highest power mode because they couldn’t get power management to properly function.
I can’t speak for modern intel GPUs but my old ones were fine.
