diff --git a/backend/memory_management.py b/backend/memory_management.py
index 3ca0b886..7b26faea 100644
--- a/backend/memory_management.py
+++ b/backend/memory_management.py
@@ -547,9 +547,19 @@ else:
         if total_vram > (15 * 1024):
             EXTRA_RESERVED_VRAM += 100 * 1024 * 1024
 
+SETTING_RESERVED_VRAM = -1
+
+
+def set_reserved_memory(val: float):
+    global SETTING_RESERVED_VRAM
+    SETTING_RESERVED_VRAM = (1.0 - val) * total_vram * 1024 * 1024
+    if SETTING_RESERVED_VRAM == 0.0:
+        return
+    logger.info("Manually Reserving {:0.0f} MB VRAM".format(SETTING_RESERVED_VRAM / (1024 * 1024)))
+
 
 def extra_reserved_memory() -> float:
-    return EXTRA_RESERVED_VRAM
+    return max(SETTING_RESERVED_VRAM, EXTRA_RESERVED_VRAM)
 
 
 def minimum_inference_memory() -> float:
diff --git a/modules/initialize_util.py b/modules/initialize_util.py
index 5855ce9e..395e916e 100644
--- a/modules/initialize_util.py
+++ b/modules/initialize_util.py
@@ -168,11 +168,19 @@ def configure_sigint_handler():
         signal.signal(signal.SIGINT, sigint_handler)
 
 
+def reserve_memory():
+    from backend.memory_management import set_reserved_memory
+    from modules.shared import opts
+
+    set_reserved_memory(opts.setting_allocated_vram)
+
+
 def configure_opts_onchange():
     from modules import shared, ui_tempdir
 
     shared.opts.onchange("temp_dir", ui_tempdir.on_tmpdir_changed)
     shared.opts.onchange("gradio_theme", shared.reload_gradio_theme)
+    shared.opts.onchange("setting_allocated_vram", reserve_memory)
     startup_timer.record("opts onchange")
 
 
diff --git a/modules/shared_options.py b/modules/shared_options.py
index 6cbf6639..36fafca2 100644
--- a/modules/shared_options.py
+++ b/modules/shared_options.py
@@ -164,6 +164,7 @@ options_templates.update(
     options_section(
         ("system", "System", "system"),
         {
+            "setting_allocated_vram": OptionInfo(1.0, "GPU Weights", gr.Slider, {"minimum": 0.0, "maximum": 1.0, "step": 0.05}).info("amount of VRAM that Forge can access").info("in % of total vram"),
             "auto_launch_browser": OptionInfo("Local", "Launch the webui in browser on startup", gr.Radio, {"choices": ("Disable", "Local", "Remote")}).info("Remote = always automatically start; Local = only when not sharing the server, such as <b>--share</b>"),
             "enable_console_prompts": OptionInfo(False, "Print the generation prompts to console"),
             "samples_log_stdout": OptionInfo(False, "Print the generation infotxt to console"),