diff --git a/Source/Atmosphere/stratosphere/loader/source/oc/mtc_timing_value.hpp b/Source/Atmosphere/stratosphere/loader/source/oc/mtc_timing_value.hpp
index 3bacec12..b5f77951 100644
--- a/Source/Atmosphere/stratosphere/loader/source/oc/mtc_timing_value.hpp
+++ b/Source/Atmosphere/stratosphere/loader/source/oc/mtc_timing_value.hpp
@@ -23,7 +23,7 @@ namespace ams::ldr::oc {
 
     const std::array<u32, 5> tWTR_values = {10, 9, 8, 7, 6};
 
-    const std::array<u32, 4> tREFpb_values = {488, 976, 1952, 3400};
+    const std::array<u32, 5> tREFpb_values = {488, 976, 1952, 3256, 9999};
 
     const std::array<u32, 6> tWL_values = {14, 12, 10, 8, 6, 4};
 
@@ -87,7 +87,8 @@ namespace ams::ldr::oc {
     // {REFRESH, REFRESH_LO} = max[(tREF/#_of_rows) / (emc_clk_period) - 64, (tREF/#_of_rows) / (emc_clk_period) * 97%]
     // emc_clk_period = dram_clk / 2;
     // 1600 MHz: 5894, but N' set to 6176 (~4.8% margin)
-    const u32 REFRESH = u32(std::ceil((double(tREFpb) * C.marikoEmcMaxClock / numOfRows * 1.048 / 2 - 64))) / 4 * 4;
+    const u32 REFRESH = MIN((u32)65472, u32(std::ceil((double(tREFpb) * C.marikoEmcMaxClock / numOfRows * 1.048 / 2 - 64))) / 4 * 4);
+    const u32 REFBW = MIN((u32)65536, REFRESH+64);
     // tPDEX2WR, tPDEX2RD (timing delay from exiting powerdown mode to a write/read command) in ns
     // const u32 tPDEX2 = 10;
     // Exit power-down to next valid command delay
diff --git a/Source/Atmosphere/stratosphere/loader/source/oc/pcv/pcv_mariko.cpp b/Source/Atmosphere/stratosphere/loader/source/oc/pcv/pcv_mariko.cpp
index b85d5485..f0d5dfd7 100644
--- a/Source/Atmosphere/stratosphere/loader/source/oc/pcv/pcv_mariko.cpp
+++ b/Source/Atmosphere/stratosphere/loader/source/oc/pcv/pcv_mariko.cpp
@@ -165,7 +165,7 @@ void MemMtcTableAutoAdjust(MarikoMtcTable* table, const MarikoMtcTable* ref) {
     WRITE_PARAM_ALL_REG(table, emc_trpab,   GET_CYCLE_CEIL(tRPab));
     WRITE_PARAM_ALL_REG(table, emc_tclkstable, GET_CYCLE_CEIL(tCKCKEH));
     WRITE_PARAM_ALL_REG(table, emc_tclkstop, GET_CYCLE_CEIL(tCKE)+8);
-    WRITE_PARAM_ALL_REG(table, emc_trefbw,  REFRESH + 64);
+    WRITE_PARAM_ALL_REG(table, emc_trefbw,  REFBW);
     
     constexpr u32 MC_ARB_DIV = 4;
     constexpr u32 MC_ARB_SFA = 2;
diff --git a/pages/src/main.ts b/pages/src/main.ts
index 33aa7a56..30997046 100644
--- a/pages/src/main.ts
+++ b/pages/src/main.ts
@@ -375,9 +375,10 @@ var AdvTable: Array<AdvEntry> = [
      "<b>1</b> : 488 (Default timing)", 
      "<b>2</b> : 976",
      "<b>3</b> : 1952",
-     "<b>4</b> : 3256",],
+     "<b>4</b> : 3256",
+     "<b>4</b> : MAX",],
      1,
-     [0,4],
+     [0,5],
      1,
   ),
   new AdvEntry(