diff --git a/fpga/src/main/scala/vcu118/Configs.scala b/fpga/src/main/scala/vcu118/Configs.scala
index 07eefd19..3c52f249 100644
--- a/fpga/src/main/scala/vcu118/Configs.scala
+++ b/fpga/src/main/scala/vcu118/Configs.scala
@@ -60,7 +60,7 @@ class RocketVCU118Config extends Config(
 // DOC include end: AbstractVCU118 and Rocket
 
 class BoomVCU118Config extends Config(
-  new WithFPGAFrequency(75) ++
+  new WithFPGAFrequency(50) ++
   new WithVCU118Tweaks ++
   new chipyard.MegaBoomConfig)
 
diff --git a/fpga/src/main/scala/vcu118/bringup/Configs.scala b/fpga/src/main/scala/vcu118/bringup/Configs.scala
index 5e19cc5c..ec1ea1e3 100644
--- a/fpga/src/main/scala/vcu118/bringup/Configs.scala
+++ b/fpga/src/main/scala/vcu118/bringup/Configs.scala
@@ -85,7 +85,7 @@ class RocketBringupConfig extends Config(
   new chipyard.RocketConfig)
 
 class BoomBringupConfig extends Config(
-  new WithFPGAFrequency(70) ++
+  new WithFPGAFrequency(50) ++
   new WithBringupAdditions ++
   new WithVCU118Tweaks ++
   new chipyard.MegaBoomConfig)