diff --git a/src/core/device_memory.cpp b/src/core/device_memory.cpp
index f19c0515ff..e6bc630864 100644
--- a/src/core/device_memory.cpp
+++ b/src/core/device_memory.cpp
@@ -3,10 +3,13 @@
 // Refer to the license.txt file included.
 
 #include "core/device_memory.h"
+#include "hle/kernel/board/nintendo/nx/k_system_control.h"
 
 namespace Core {
 
-DeviceMemory::DeviceMemory() : buffer{DramMemoryMap::Size, 1ULL << 39} {}
+DeviceMemory::DeviceMemory()
+    : buffer{Kernel::Board::Nintendo::Nx::KSystemControl::Init::GetIntendedMemorySize(),
+             1ULL << 39} {}
 DeviceMemory::~DeviceMemory() = default;
 
 } // namespace Core
diff --git a/src/core/device_memory.h b/src/core/device_memory.h
index c4d17705f1..daeb551eab 100644
--- a/src/core/device_memory.h
+++ b/src/core/device_memory.h
@@ -12,12 +12,8 @@ namespace Core {
 namespace DramMemoryMap {
 enum : u64 {
     Base = 0x80000000ULL,
-    Size = 0x100000000ULL,
-    End = Base + Size,
     KernelReserveBase = Base + 0x60000,
     SlabHeapBase = KernelReserveBase + 0x85000,
-    SlapHeapSize = 0xa21000,
-    SlabHeapEnd = SlabHeapBase + SlapHeapSize,
 };
 }; // namespace DramMemoryMap
 
diff --git a/src/core/memory.cpp b/src/core/memory.cpp
index 88d6ec9083..28d30eee29 100644
--- a/src/core/memory.cpp
+++ b/src/core/memory.cpp
@@ -39,8 +39,7 @@ struct Memory::Impl {
     void MapMemoryRegion(Common::PageTable& page_table, VAddr base, u64 size, PAddr target) {
         ASSERT_MSG((size & PAGE_MASK) == 0, "non-page aligned size: {:016X}", size);
         ASSERT_MSG((base & PAGE_MASK) == 0, "non-page aligned base: {:016X}", base);
-        ASSERT_MSG(target >= DramMemoryMap::Base && target < DramMemoryMap::End,
-                   "Out of bounds target: {:016X}", target);
+        ASSERT_MSG(target >= DramMemoryMap::Base, "Out of bounds target: {:016X}", target);
         MapPages(page_table, base / PAGE_SIZE, size / PAGE_SIZE, target, Common::PageType::Memory);
 
         if (Settings::IsFastmemEnabled()) {