diff --git a/python/llm/src/ipex_llm/transformers/models/mixtral.py b/python/llm/src/ipex_llm/transformers/models/mixtral.py
index 9069c49c0c5..b63772a8e41 100644
--- a/python/llm/src/ipex_llm/transformers/models/mixtral.py
+++ b/python/llm/src/ipex_llm/transformers/models/mixtral.py
@@ -51,8 +51,7 @@
 from ipex_llm.ggml.quantize import ggml_tensor_qtype
 from ipex_llm.utils.common import invalidInputError
 from ipex_llm.transformers.models.utils import init_kv_cache, extend_kv_cache, append_kv_cache
-from ipex_llm.transformers.models.utils import apply_rotary_pos_emb,\
-    apply_rotary_pos_emb_cache_freq_xpu, is_enough_kv_cache_room_4_36
+from ipex_llm.transformers.models.utils import apply_rotary_pos_emb, is_enough_kv_cache_room_4_36
 from ipex_llm.transformers.models.mistral import should_use_fuse_rope
 from ipex_llm.transformers.models.utils import use_decoding_fast_path
 from ipex_llm.transformers.models.utils import use_flash_attention, use_sdp
@@ -258,16 +257,9 @@ def mixtral_attention_forward(
             kv_seq_len += past_key_value.get_usable_length(kv_seq_len, self.layer_idx)
 
         if use_fuse_rope:
-            cos, sin = self.rotary_emb(value_states, seq_len=kv_seq_len)
-            cos = cos.squeeze(1).squeeze(0)  # [seq_len, dim]
-            sin = sin.squeeze(1).squeeze(0)  # [seq_len, dim]
-            cos = cos[position_ids].unsqueeze(1)  # [bs, 1, seq_len, dim]
-            sin = sin[position_ids].unsqueeze(1)  # [bs, 1, seq_len, dim]
-            query_states, key_states = apply_rotary_pos_emb_cache_freq_xpu(query_states,
-                                                                           key_states,
-                                                                           sin,
-                                                                           cos,
-                                                                           "mixtral")
+            import xe_addons
+            xe_addons.rotary_half_inplaced(self.rotary_emb.inv_freq, position_ids,
+                                           query_states, key_states)
         else:
             cos, sin = self.rotary_emb(value_states, seq_len=kv_seq_len)
             query_states, key_states = apply_rotary_pos_emb(query_states, key_states,
diff --git a/python/llm/src/ipex_llm/transformers/models/utils.py b/python/llm/src/ipex_llm/transformers/models/utils.py
index 1589bea4403..904ffe9b727 100644
--- a/python/llm/src/ipex_llm/transformers/models/utils.py
+++ b/python/llm/src/ipex_llm/transformers/models/utils.py
@@ -207,36 +207,6 @@ def apply_ipex_rotate_every_two(q, k, cos, sin):
         torch.ops.torch_ipex.apply_rotary_embedding(k, sin, cos, k)
 
 
-def apply_rotary_pos_emb_cache_freq_xpu(q, k, sin, cos, model_family, position_ids=None):
-    if q.device.type != "xpu":
-        invalidInputError(False,
-                          f"only xpu is supported in this function")
-    import xe_addons
-    q_embed = torch.empty(q.shape, dtype=q.dtype, device=q.device)
-    k_embed = torch.empty(k.shape, dtype=k.dtype, device=k.device)
-    if model_family in ["qwen", "mixtral"]:
-        xe_addons.apply_rotary_embedding_half_q_and_k_cache_freq(q, k, sin, cos,
-                                                                 q_embed, k_embed)
-    elif model_family in ["qwen2", "yuan", "stablelm", "qwen2_moe", "internlm"]:
-        cos = cos.to(q.dtype)
-        sin = sin.to(q.dtype)
-        cos = cos.squeeze(1).squeeze(0)  # [seq_len, dim]
-        sin = sin.squeeze(1).squeeze(0)  # [seq_len, dim]
-        cos = cos[position_ids].unsqueeze(1)  # [bs, 1, seq_len, dim]
-        sin = sin[position_ids].unsqueeze(1)  # [bs, 1, seq_len, dim]
-        xe_addons.apply_rotary_embedding_half_q_and_k_cache_freq(q, k, sin, cos,
-                                                                 q_embed, k_embed)
-    elif model_family in ["gemma", "phi3"]:
-        cos = cos.unsqueeze(1)
-        sin = sin.unsqueeze(1)
-        xe_addons.apply_rotary_embedding_half_q_and_k_cache_freq(q, k, sin, cos,
-                                                                 q_embed, k_embed)
-    else:
-        invalidInputError(False,
-                          f"{model_family} is not supported.")
-    return q_embed, k_embed
-
-
 def is_enough_kv_cache_room_4_36(past_key_value, idx, seq_len=1):
     # to determinate if is enough kv cache room in transformers==4.36
     # seq_len for current seq len