diff --git a/src/core/bus.cpp b/src/core/bus.cpp
index ee4c4ed70..c1bd37eb1 100644
--- a/src/core/bus.cpp
+++ b/src/core/bus.cpp
@@ -55,7 +55,7 @@ void Bus::Initialize(CPU::Core* cpu, CPU::CodeCache* cpu_code_cache, DMA* dma,
 
 void Bus::Reset()
 {
-  m_ram.fill(static_cast<u8>(0));
+  std::memset(m_ram, 0, sizeof(m_ram));
   m_MEMCTRL.exp1_base = 0x1F000000;
   m_MEMCTRL.exp2_base = 0x1F802000;
   m_MEMCTRL.exp1_delay_size.bits = 0x0013243F;
@@ -76,8 +76,8 @@ bool Bus::DoState(StateWrapper& sw)
   sw.Do(&m_bios_access_time);
   sw.Do(&m_cdrom_access_time);
   sw.Do(&m_spu_access_time);
-  sw.DoBytes(m_ram.data(), m_ram.size());
-  sw.DoBytes(m_bios.data(), m_bios.size());
+  sw.DoBytes(m_ram, sizeof(m_ram));
+  sw.DoBytes(m_bios, sizeof(m_bios));
   sw.DoArray(m_MEMCTRL.regs, countof(m_MEMCTRL.regs));
   sw.Do(&m_ram_size_reg);
   sw.Do(&m_tty_line_buffer);
@@ -183,7 +183,7 @@ void Bus::SetBIOS(const std::vector<u8>& image)
     return;
   }
 
-  std::copy(image.cbegin(), image.cend(), m_bios.begin());
+  std::memcpy(m_bios, image.data(), BIOS_SIZE);
 }
 
 std::tuple<TickCount, TickCount, TickCount> Bus::CalculateMemoryTiming(MEMDELAY mem_delay, COMDELAY common_delay)
diff --git a/src/core/bus.h b/src/core/bus.h
index 609dec2c4..de50b8287 100644
--- a/src/core/bus.h
+++ b/src/core/bus.h
@@ -239,7 +239,7 @@ private:
   void DoInvalidateCodeCache(u32 page_index);
 
   /// Direct access to RAM - used by DMA.
-  ALWAYS_INLINE u8* GetRAM() { return m_ram.data(); }
+  ALWAYS_INLINE u8* GetRAM() { return m_ram; }
 
   /// Returns the number of cycles stolen by DMA RAM access.
   ALWAYS_INLINE static TickCount GetDMARAMTickCount(u32 word_count)
@@ -282,8 +282,8 @@ private:
   std::array<TickCount, 3> m_spu_access_time = {};
 
   std::bitset<CPU_CODE_CACHE_PAGE_COUNT> m_ram_code_bits{};
-  std::array<u8, RAM_SIZE> m_ram{};   // 2MB RAM
-  std::array<u8, BIOS_SIZE> m_bios{}; // 512K BIOS ROM
+  u8 m_ram[RAM_SIZE]{};   // 2MB RAM
+  u8 m_bios[BIOS_SIZE]{}; // 512K BIOS ROM
   std::vector<u8> m_exp1_rom;
 
   MEMCTRL m_MEMCTRL = {};
diff --git a/src/core/dma.cpp b/src/core/dma.cpp
index 423d27f84..d307c576d 100644
--- a/src/core/dma.cpp
+++ b/src/core/dma.cpp
@@ -518,7 +518,7 @@ TickCount DMA::TransferDeviceToMemory(Channel channel, u32 address, u32 incremen
 
   if (dest_pointer == m_transfer_buffer.data())
   {
-    u8* ram_pointer = m_bus->m_ram.data();
+    u8* ram_pointer = m_bus->m_ram;
     for (u32 i = 0; i < word_count; i++)
     {
       std::memcpy(&ram_pointer[address], &m_transfer_buffer[i], sizeof(u32));