MSI B450M-A PRO MAX II vs MSI B550M-A PRO

Price in Nepal and availability

• MSI B450M-A PRO MAX II: Rs. 13,000 · In stock · 1 year warranty
• MSI B550M-A PRO: Rs. 17,000 · In stock · 1 year warranty

Prices and availability may change; the product pages always show the current ones.

MSI B450M-A PRO MAX II vs MSI B550M-A PRO: specifications side by side

Specification	MSI B450M-A PRO MAX II	MSI B550M-A PRO
Price	Rs. 13,000	Rs. 17,000
Brand	MSI	MSI
Availability	In stock	In stock
Warranty	1 year (brand warranty)	1 year (brand warranty)
Product Type	Motherboard	Motherboard
Model	B450M-A PRO MAX II	B550M-A PRO
Form Factor	Micro-ATX (mATX)	Micro-ATX (mATX)
Dimensions	200 × 236 mm	236 × 200 mm
CPU Socket	AM4	AM4
Chipset	AMD B450	AMD B550
Supported CPU	AMD Ryzen 5000 / 5000 G-Series / 4000 G-Series / 3000 / 3000 G-Series / 2000 / 2000 G-Series / 1000 Series Desktop Processors; Athlon with Radeon Vega Graphics	Ryzen 5000 / 3000 Series and Ryzen 4000 G-Series; not compatible with Ryzen 5 3400G or Ryzen 3 3200G
RAM Type	DDR4 UDIMM	DDR4
RAM Slots	2 × DIMM	2 × DIMM
Maximum RAM	64GB	64GB
Memory Speed	DDR4 2667–4133 MHz (OC)	DDR4 1866–3200 MHz JEDEC; up to 4600+ MHz A-XMP OC, CPU/configuration dependent
Memory Channels	Dual-Channel	Dual-Channel
Memory Technology	Non-ECC UDIMM, ECC UDIMM (Non-ECC Mode), Unbuffered	–
PCIe Version	PCIe 3.0 x16 + PCIe 2.0 x1	PCIe 4.0/3.0
PCIe Slots	1 × PCIe x16 + 1 × PCIe x1	1 × PCIe x16 + 1 × PCIe x1
M.2 Slots	1 × M.2	1 × M.2
M.2 Interface	PCIe 3.0 x4 / SATA	PCIe 4.0/3.0 and SATA, depending on processor
SATA Ports	4 × SATA 6Gb/s	4 × SATA III
RAID Support	RAID 0/1/10 for SATA	RAID 0/1/10
Integrated Graphics Output	1 × HDMI 2.0b + 1 × DVI-D	–
LAN	Realtek 8125 2.5Gbps LAN	Realtek RTL8111H Gigabit LAN
Audio Chipset	Realtek ALC897, 7.1-Channel HD Audio	Realtek ALC892/ALC897 Codec
Internal Headers	Front Panel, Chassis Intrusion, Front Audio, COM	1 × COM / serial header; TPM header; front audio; front panel; chassis intrusion
Fan Headers	1 × CPU Fan + 1 × System Fan	–
TPM Header	2.0 Header	1 × TPM Header
Operating System Support	Windows 11 64-bit / Windows 10 64-bit	Windows 10 64-bit
M.2 Sizes	2242 / 2260 / 2280	2242 / 2260 / 2280
HDMI	HDMI 2.0b, up to 4K 60Hz; requires processor graphics	–
Display Outputs	HDMI 2.0b and DVI-D; DVI-D up to 1920×1200 at 60Hz	HDMI 2.1 up to 4096×2160 at 60Hz; DVI-D up to 1920×1200 at 60Hz; requires CPU with integrated graphics
Rear USB Ports	2 × USB 2.0; 4 × USB 5Gbps Type-A	–
Internal USB Headers	Supports 4 × USB 2.0 and 2 × USB 5Gbps Type-A front ports	–
USB 3.2 Gen 1 Ports	–	4 × rear Type-A; 2 × front via internal header
USB 2.0 Ports	–	2 × rear Type-A; 4 × front via internal headers

Key differences

• MSI B450M-A PRO MAX II has the lower listed price (Rs. 13,000 vs Rs. 17,000), a difference of Rs. 4,000.
• Model: MSI B450M-A PRO MAX II has B450M-A PRO MAX II; MSI B550M-A PRO has B550M-A PRO.
• Dimensions: MSI B450M-A PRO MAX II has 200 × 236 mm; MSI B550M-A PRO has 236 × 200 mm.
• Chipset: MSI B450M-A PRO MAX II has AMD B450; MSI B550M-A PRO has AMD B550.
• RAM Type: MSI B450M-A PRO MAX II has DDR4 UDIMM; MSI B550M-A PRO has DDR4.
• PCIe Version: MSI B450M-A PRO MAX II has PCIe 3.0 x16 + PCIe 2.0 x1; MSI B550M-A PRO has PCIe 4.0/3.0.
• M.2 Interface: MSI B450M-A PRO MAX II has PCIe 3.0 x4 / SATA; MSI B550M-A PRO has PCIe 4.0/3.0 and SATA, depending on processor.
• SATA Ports: MSI B450M-A PRO MAX II has 4 × SATA 6Gb/s; MSI B550M-A PRO has 4 × SATA III.
• RAID Support: MSI B450M-A PRO MAX II has RAID 0/1/10 for SATA; MSI B550M-A PRO has RAID 0/1/10.
• LAN: MSI B450M-A PRO MAX II has Realtek 8125 2.5Gbps LAN; MSI B550M-A PRO has Realtek RTL8111H Gigabit LAN.
• Audio Chipset: MSI B450M-A PRO MAX II has Realtek ALC897, 7.1-Channel HD Audio; MSI B550M-A PRO has Realtek ALC892/ALC897 Codec.
• TPM Header: MSI B450M-A PRO MAX II has 2.0 Header; MSI B550M-A PRO has 1 × TPM Header.
• Operating System Support: MSI B450M-A PRO MAX II has Windows 11 64-bit / Windows 10 64-bit; MSI B550M-A PRO has Windows 10 64-bit.

Which product is suitable for what?