diff --git a/comfy/model_management.py b/comfy/model_management.py
index 1ab648864..449295a1a 100644
--- a/comfy/model_management.py
+++ b/comfy/model_management.py
@@ -246,7 +246,7 @@ try:
         logging.info("AMD arch: {}".format(arch))
         if args.use_split_cross_attention == False and args.use_quad_cross_attention == False:
             if torch_version_numeric[0] >= 2 and torch_version_numeric[1] >= 7:  # works on 2.6 but doesn't actually seem to improve much
-                if arch in ["gfx1100"]: #TODO: more arches
+                if any((a in arch) for a in ["gfx1100", "gfx1101"]):  # TODO: more arches
                     ENABLE_PYTORCH_ATTENTION = True
 except:
     pass
@@ -1111,7 +1111,9 @@ def should_use_bf16(device=None, model_params=0, prioritize_performance=True, ma
 
     if is_amd():
         arch = torch.cuda.get_device_properties(device).gcnArchName
-        if arch in ["gfx1030", "gfx1031", "gfx1010", "gfx1011", "gfx1012", "gfx906", "gfx900", "gfx803"]:  # RDNA2 and older don't support bf16
+        if any((a in arch) for a in ["gfx1030", "gfx1031", "gfx1010", "gfx1011", "gfx1012", "gfx906", "gfx900", "gfx803"]):  # RDNA2 and older don't support bf16
+            if manual_cast:
+                return True
             return False
 
     props = torch.cuda.get_device_properties(device)