Repository: stable-diffusion-webui
Issue: [Bug]: 1.4.0 lowram not working
Labels: bug-report

### Is there an existing issue for this?

- [X] I have searched the existing issues and checked the recent builds/commits

### What happened?

i made a fresh install 1.4.0
RAM: 7gb
VRAM: 16gb

**--lowram** is not working, still loading checkpoint to ram.

maybe not related but i tried even in settings "Keep models in VRAM" is checked

### Steps to reproduce the problem

1. fresh install 1.4.0
2. --xformers --opt-channelslast --lowram --listen --api
3. its imposible to start with 7gb ram

### What should have happened?

it must load models to GPU

### Version or Commit where the problem happens

v1.4.0

### What Python version are you running on ?

Python 3.10.x

### What platforms do you use to access the UI ?

Linux

### What device are you running WebUI on?

Other GPUs

### Cross attention optimization

xformers

### What browsers do you use to access the UI ?

Google Chrome

### Command Line Arguments

```Shell
--xformers --opt-channelslast --lowram --listen --api
```


### List of extensions

standart

### Console logs

```Shell
################################################################
Install script for stable-diffusion + Web UI
Tested on Debian 11 (Bullseye)
################################################################

################################################################
Running on banias user
################################################################

################################################################
Repo already cloned, using it as install directory
################################################################

################################################################
python venv already activate: /home/banias/stable-diffusion-webui/venv
################################################################

################################################################
Launching launch.py...
################################################################
Using TCMalloc: libtcmalloc_minimal.so.4
Python 3.10.7 (main, May 29 2023, 13:51:48) [GCC 12.2.0]
Version: v1.4.0
Commit hash: 394ffa7b0a7fff3ec484bcd084e673a8b301ccc8
Installing requirements
Launching Web UI with arguments: --xformers --opt-channelslast --lowram --listen --api
Loading weights [6ce0161689] from /home/banias/stable-diffusion-webui/models/Stable-diffusion/v1-5-pruned-emaonly.safetensors
preload_extensions_git_metadata for 7 extensions took 0.00s
Running on local URL:  http://0.0.0.0:7860

To create a public link, set `share=True` in `launch()`.
Startup time: 12.3s (import torch: 4.7s, import gradio: 2.3s, import ldm: 1.9s, other imports: 1.6s, load scripts: 0.5s, create ui: 0.9s, gradio launch: 0.2s, add APIs: 0.2s).
Creating model from config: /home/banias/stable-diffusion-webui/configs/v1-inference.yaml
LatentDiffusion: Running in eps-prediction mode
DiffusionWrapper has 859.52 M params.



-----------------------

banias@instance-1:~$ free -m
               total        used        free      shared  buff/cache   available
Mem:            7430        2056        1104          12        4268        5084
Swap:              0           0           0
banias@instance-1:~$ free -m
               total        used        free      shared  buff/cache   available
Mem:            7430        5249         150          12        2031        1891
Swap:              0           0           0
banias@instance-1:~$ free -m
               total        used        free      shared  buff/cache   available
Mem:            7430        6351         157          12         921         789
Swap:              0           0           0
```


### Additional information

_No response_