diff --git a/comfy/supported_models.py b/comfy/supported_models.py
index c12ff9d9e..65c3d1bd8 100644
--- a/comfy/supported_models.py
+++ b/comfy/supported_models.py
@@ -1212,6 +1212,9 @@ class ChromaRadiance(Chroma):
 
     latent_format = comfy.latent_formats.ChromaRadiance
 
+    # Pixel-space model, no spatial compression for model input.
+    memory_usage_factor = 0.45
+
     def get_model(self, state_dict, prefix="", device=None):
         return model_base.ChromaRadiance(self, device=device)