diff --git a/src/ucp/proto/proto_common.c b/src/ucp/proto/proto_common.c
index 5704ba33f3a..b4bc45dcd90 100644
--- a/src/ucp/proto/proto_common.c
+++ b/src/ucp/proto/proto_common.c
@@ -350,7 +350,7 @@ ucp_proto_common_get_lane_perf(const ucp_proto_common_init_params_t *params,
     ucs_sys_dev_distance_t distance;
     size_t tl_min_frag, tl_max_frag;
     uct_perf_attr_t perf_attr;
-    ucs_sys_device_t sys_dev;
+    ucs_sys_device_t sys_dev, device_sys_dev;
     ucs_status_t status;
     char bdf_name[32];
 
@@ -427,6 +427,15 @@ ucp_proto_common_get_lane_perf(const ucp_proto_common_init_params_t *params,
                 ucs_topo_sys_device_get_name(sys_dev),
                 ucs_topo_sys_device_bdf_name(sys_dev, bdf_name,
                                              sizeof(bdf_name)));
+
+        /* Add bandwidth for interfaces very close to the memory. */
+        device_sys_dev = ucp_proto_common_get_tl_rsc(&params->super, lane)->sys_device;
+        if ((sys_dev != UCS_SYS_DEVICE_ID_UNKNOWN) &&
+            (device_sys_dev != UCS_SYS_DEVICE_ID_UNKNOWN) &&
+            (sys_dev != device_sys_dev) &&
+            ucs_topo_is_pci_bridge(device_sys_dev, sys_dev)) {
+            tl_perf->bandwidth *= 1.2;
+        }
     }
 
     /* For remote memory access, consider remote system topology distance */
diff --git a/src/ucs/sys/topo/base/topo.c b/src/ucs/sys/topo/base/topo.c
index fe4279e092e..feea25cbeba 100644
--- a/src/ucs/sys/topo/base/topo.c
+++ b/src/ucs/sys/topo/base/topo.c
@@ -832,7 +832,7 @@ ucs_numa_node_t ucs_topo_sys_device_get_numa_node(ucs_sys_device_t sys_dev)
  * @return 1 if the devices share a PCI bridge, 0 otherwise. Returns 0 the
  *         devices are the same.
  */
-static int
+int
 ucs_topo_is_pci_bridge(ucs_sys_device_t sys_dev1, ucs_sys_device_t sys_dev2)
 {
     ucs_status_t status;
diff --git a/src/ucs/sys/topo/base/topo.h b/src/ucs/sys/topo/base/topo.h
index fc64d2a3a32..e5266d12934 100644
--- a/src/ucs/sys/topo/base/topo.h
+++ b/src/ucs/sys/topo/base/topo.h
@@ -358,6 +358,11 @@ void ucs_topo_init(void);
  */
 void ucs_topo_cleanup(void);
 
+/**
+ * Check if two system devices share a PCI bridge.
+ */
+int ucs_topo_is_pci_bridge(ucs_sys_device_t sys_dev1, ucs_sys_device_t sys_dev2);
+
 END_C_DECLS
 
 #endif