diff --git a/configs/stm3240g-eval/nsh/defconfig b/configs/stm3240g-eval/nsh/defconfig
index cb96f68281..88b7ef4823 100755
--- a/configs/stm3240g-eval/nsh/defconfig
+++ b/configs/stm3240g-eval/nsh/defconfig
@@ -77,7 +77,7 @@ CONFIG_ARCH_CHIP=stm32
 CONFIG_ARCH_CHIP_STM32F407IG=y
 CONFIG_ARCH_BOARD=stm3240g-eval
 CONFIG_ARCH_BOARD_STM3240G_EVAL=y
-CONFIG_BOARD_LOOPSPERMSEC=5483
+CONFIG_BOARD_LOOPSPERMSEC=16717
 CONFIG_DRAM_SIZE=0x00030000
 CONFIG_DRAM_START=0x20000000
 CONFIG_DRAM_END=(CONFIG_DRAM_START+CONFIG_DRAM_SIZE)
diff --git a/configs/stm3240g-eval/ostest/defconfig b/configs/stm3240g-eval/ostest/defconfig
index 8d903e99a1..131e0253a5 100755
--- a/configs/stm3240g-eval/ostest/defconfig
+++ b/configs/stm3240g-eval/ostest/defconfig
@@ -77,7 +77,7 @@ CONFIG_ARCH_CHIP=stm32
 CONFIG_ARCH_CHIP_STM32F407IG=y
 CONFIG_ARCH_BOARD=stm3240g-eval
 CONFIG_ARCH_BOARD_STM3240G_EVAL=y
-CONFIG_BOARD_LOOPSPERMSEC=5483
+CONFIG_BOARD_LOOPSPERMSEC=16717
 CONFIG_DRAM_SIZE=0x00030000
 CONFIG_DRAM_START=0x20000000
 CONFIG_DRAM_END=(CONFIG_DRAM_START+CONFIG_DRAM_SIZE)