diff --git a/sysctl.d/12309.conf b/sysctl.d/12309.conf
index 352f8a7..db7a187 100644
--- a/sysctl.d/12309.conf
+++ b/sysctl.d/12309.conf
@@ -16,9 +16,3 @@ vm.vfs_cache_pressure = 50
 #vm.dirty_ratio = 3
 # For old kernels <2.6.30 (default = 10)
 #vm.dirty_background_ratio = 3
-
-# -- more 12309 tricks --
-# (default = 3000)
-vm.dirty_expire_centisecs =  1000
-# (default = 500)
-vm.dirty_writeback_centisecs = 200
diff --git a/sysctl.d/powersave.conf b/sysctl.d/powersave.conf
new file mode 100644
index 0000000..ba5f4f4
--- /dev/null
+++ b/sysctl.d/powersave.conf
@@ -0,0 +1,4 @@
+# (default = 3000)
+vm.dirty_expire_centisecs =  6000
+# (default = 500)
+vm.dirty_writeback_centisecs = 6000