GPU stops PSU from shutting down. Seems to work.
GPU stops PSU from shutting down. Seems to work.
Initial setup and appreciation for any advice! Open disclosure, I'm using a less-than-smooth setup. Before the GPU upgrade, everything functioned well. My motherboard has a restricted power supply, so I use a second PSU to run the 3090. The original motherboard uses a SATA power switch from the motherboard. With the 3060, shutting down via Windows 10 caused all components—system, GPU, and power supplies—to power off. Switching to the 3090 resulted in shutdowns but kept the graphics card lights on. The GPU fans stopped right away, while case fans on the 'molex' rails stayed running. Power is coming from three separate PCIe connections from the PSU. No other changes except removing the old 3060 and installing two new PCIe leads from the same PSU. The new PSU came with those leads. [edit] My friend's single PSU PC had the 3090 installed without doing this. We reinstalled it successfully, and I did the same with the 3060 in my setup—no issues. Just the 3090 caused problems; drivers were fully removed and reinstalled twice. Motherboard: Lenovo M70s ThinkCentre GPU: ASUS ROG Strix 3090 RTX White OC PSU: Seasonic Focus GX-850 (only for GPU PCIe) tried the PSU in normal and Hybrid modes.
No, I don't use something like that. I had a power display adapter that would feed back into the PSU, keeping the fans running. Updated September 21, 2024 by thrasher_565
Thanks for the update! You're using a setup where SATA power comes through the motherboard at startup, and relays manage the PSU connections. This configuration works well with smaller mining rigs that need to automatically power on/off multiple GPUs and PSUs. The relay board you replaced is a spare, so no changes were needed there. You're also using backfeed, which helps manage power distribution.
I've adjusted several things: removed all USB devices except the keyboard, tried a different keyboard to reset the system, moved the primary PSU to another rail on the PSU, unplugged the second monitor during shutdown, and turned off the RGB display on the graphics card. Updated the motherboard BIOS to ASUS Armory Crate, applied all updates, and disabled the RGB lighting on the GPU.
I would test the cable I connected. Or obtain a suitable power supply unit for your setup.
Thank you for the feedback! Recently I installed that cable and tested it, achieving a similar outcome with minor adjustments. The motherboard uses its own 10-pin power connector, which was easy to align. Still, the 3060 powers up correctly, while the 3090 doesn’t unless other settings are changed.