diff --git a/comfy/model_detection.py b/comfy/model_detection.py
index 7caad2e0b..e2bdb1e2d 100644
--- a/comfy/model_detection.py
+++ b/comfy/model_detection.py
@@ -73,6 +73,14 @@ def detect_unet_config(state_dict, key_prefix, metadata=None):
         dit_config["axes_lens"] = [1536, 512, 512]
         dit_config["rope_theta"] = 256.0
 
+        try:
+            dit_config["allow_fp16"] = torch.std(
+                state_dict['{}layers.{}.ffn_norm1.weight'.format(key_prefix, dit_config["n_layers"] - 2)],
+                unbiased=False
+            ).item() < 0.42
+        except Exception:
+            pass
+
         if '{}cap_pad_token'.format(key_prefix) in state_dict_keys or '{}x_pad_token'.format(key_prefix) in state_dict_keys:
             dit_config["pad_tokens_multiple"] = 32