diff --git a/CHANGELOG.md b/CHANGELOG.md
index 221a6891dd018c536073c3aac3ad712ba4632517..69e40ea6fb2425111a4e4ba80c06b31868c7ec86 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -94,6 +94,7 @@ Please mark all change in change log and use the issue from GitHub
 -   \#1480 Add return code for AVX512 selection
 -   \#1524 Update config "preload_table" description
 -   \#1544 Update resources name in HTTP module
+-   \#1567 Update yaml config description
 
 ## Task
 -   \#1327 Exclude third-party code from codebeat
diff --git a/core/conf/demo/server_config.yaml b/core/conf/demo/server_config.yaml
index cb15b1487f142f463079474f2d231cad992219de..52991431e239d8153a9ef7125e1112bb3ba5e4dd 100644
--- a/core/conf/demo/server_config.yaml
+++ b/core/conf/demo/server_config.yaml
@@ -107,10 +107,10 @@ cache_config:
 # use_blas_threshold   | A Milvus performance tuning parameter. This value will be  | Integer    | 1100            |
 #                      | compared with 'nq' to decide if OpenBLAS should be used.   |            |                 |
 #                      | If nq >= use_blas_threshold, OpenBLAS will be used, search |            |                 |
-#                      | response times will be stable but the search speed will be |            |                 |
-#                      | slower; if nq < use_blas_threshold, SSE will be used,      |            |                 |
-#                      | search speed will be faster but search response times will |            |                 |
-#                      | fluctuate.                                                 |            |                 |
+#                      | response time will be stable but the search speed will be  |            |                 |
+#                      | slower; if nq < use_blas_threshold, AVX or SSE will be     |            |                 |
+#                      | used, search speed will be faster but search response time |            |                 |
+#                      | will fluctuate.                                            |            |                 |
 #----------------------+------------------------------------------------------------+------------+-----------------+
 # gpu_search_threshold | A Milvus performance tuning parameter. This value will be  | Integer    | 1000            |
 #                      | compared with 'nq' to decide if the search computation will|            |                 |
diff --git a/core/conf/server_cpu_config.template b/core/conf/server_cpu_config.template
index e511bc22f7869a19f9a2a64f3954087b052359b0..2a3d52e119f601018b417bb90729ae7a6f936d78 100644
--- a/core/conf/server_cpu_config.template
+++ b/core/conf/server_cpu_config.template
@@ -107,10 +107,10 @@ cache_config:
 # use_blas_threshold   | A Milvus performance tuning parameter. This value will be  | Integer    | 1100            |
 #                      | compared with 'nq' to decide if OpenBLAS should be used.   |            |                 |
 #                      | If nq >= use_blas_threshold, OpenBLAS will be used, search |            |                 |
-#                      | response times will be stable but the search speed will be |            |                 |
-#                      | slower; if nq < use_blas_threshold, SSE will be used,      |            |                 |
-#                      | search speed will be faster but search response times will |            |                 |
-#                      | fluctuate.                                                 |            |                 |
+#                      | response time will be stable but the search speed will be  |            |                 |
+#                      | slower; if nq < use_blas_threshold, AVX or SSE will be     |            |                 |
+#                      | used, search speed will be faster but search response time |            |                 |
+#                      | will fluctuate.                                            |            |                 |
 #----------------------+------------------------------------------------------------+------------+-----------------+
 # gpu_search_threshold | A Milvus performance tuning parameter. This value will be  | Integer    | 1000            |
 #                      | compared with 'nq' to decide if the search computation will|            |                 |
diff --git a/core/conf/server_gpu_config.template b/core/conf/server_gpu_config.template
index 2a926f3f6a31b53deeb13451f3b6ed4f00351d03..593d830c38df33ccca4c3cf0a2c4b2f07855c8d6 100644
--- a/core/conf/server_gpu_config.template
+++ b/core/conf/server_gpu_config.template
@@ -107,10 +107,10 @@ cache_config:
 # use_blas_threshold   | A Milvus performance tuning parameter. This value will be  | Integer    | 1100            |
 #                      | compared with 'nq' to decide if OpenBLAS should be used.   |            |                 |
 #                      | If nq >= use_blas_threshold, OpenBLAS will be used, search |            |                 |
-#                      | response times will be stable but the search speed will be |            |                 |
-#                      | slower; if nq < use_blas_threshold, SSE will be used,      |            |                 |
-#                      | search speed will be faster but search response times will |            |                 |
-#                      | fluctuate.                                                 |            |                 |
+#                      | response time will be stable but the search speed will be  |            |                 |
+#                      | slower; if nq < use_blas_threshold, AVX or SSE will be     |            |                 |
+#                      | used, search speed will be faster but search response time |            |                 |
+#                      | will fluctuate.                                            |            |                 |
 #----------------------+------------------------------------------------------------+------------+-----------------+
 # gpu_search_threshold | A Milvus performance tuning parameter. This value will be  | Integer    | 1000            |
 #                      | compared with 'nq' to decide if the search computation will|            |                 |