updated GPU and now only 1 device shown under device in info?

[seamouse123]

so i had 2 x 12gb 3060 and i swear under devices it did show both of them.
Now i updated to a 5060 ti and "YES" both cards are seen when i boot , told it to use the 16gb over the 12gb

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ComfyUI SAFE Launcher

Root : F:\ComfyUI\ComfyUI_git
Python : F:\ComfyUI\ComfyUI_git.venv\Scripts\python.exe
User : C:\ComfyUI_User
URL : http://127.0.0.1:8000/
GPU : CUDA_VISIBLE_DEVICES=0,1
Main : --default-device 1 (visible GPU = RTX 5060 Ti)

[INFO] Setting GPU power limits...
[INFO] Current GPU power limits:
index, name, pci.bus_id, power.limit [W], power.max_limit [W]
0, NVIDIA GeForce RTX 3060, 00000000:06:00.0, 170.00 W, 212.00 W
1, NVIDIA GeForce RTX 5060 Ti, 00000000:07:00.0, 180.00 W, 180.00 W

but under devices i just have this?

is it because of this in the batch file?
echo Main : --default-device 1 (visible GPU = RTX 5060 Ti)
how do i list both?

also keeps saying im on 17.0 and I`m on 17.2

[gershu-ar]

Hiya.

Based on your logs and screenshot, your system correctly identifies both GPUs at boot, but ComfyUI is being instructed to ignore one of them. Here is the breakdown of why this is happening and how to fix it.

1. The "Default Device" Lock

-> The line in your batch file Main : --default-device 1 is the culprit, you're guessing right.

What it does: This flag tells ComfyUI to strictly initialize only GPU index 1 (your RTX 5060 Ti).

The Result: Because the engine is "locked" to that specific card, it stops reporting other available devices in the System Info tab. It’s not that the 3060 is gone; it’s just that this specific instance of ComfyUI has been told not to look at it.

2. How to see both GPUs

If you want both cards to appear in the device list, you need to edit your .bat or launcher settings:

-> Remove --default-device 1.

Note: Without this flag, ComfyUI usually defaults to Device 0. Since your 3060 is Index 0 and has less VRAM (12GB vs 16GB), you might run into "Out of Memory" errors if you don't manually manage which card handles the heavy lifting.

3. Can you use both at the same time?

Stable Diffusion does not combine VRAM (you don't get 28GB).

Yet, you can use both cards, so you have two main paths:

a) Running parallel Instances. You can run two separate ComfyUI windows. Set one to CUDA_VISIBLE_DEVICES=0 and the other to CUDA_VISIBLE_DEVICES=1 using different ports (e.g., 8188 and 8189). This allows you to render two different things simultaneously.

b) Custom Nodes: Use a suite like rgthree or specific Multi-GPU nodes. These allow you to send the "Model" to the 5060 Ti and the "VAE/CLIP" to the 3060 within the same workflow to optimize VRAM.

4. Version Mismatch (0.17.0 vs 0.17.2)

This discrepancy usually happens when the frontend package updates but the core environment or the "Safe Launcher" registry is still pointing to an older build.

Recommendation: Since you just performed a major hardware swap, a clean install is highly recommended.

Best Path: Use the new ComfyUI V2 Desktop App. It handles hardware detection much better on Windows 11 and will align your version numbers automatically.