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ASUS Prime B450M-A II

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ASUS Prime B450M-A II Specifications

ASUS Prime B450M-A II by ASUS is a Micro-ATX form factor motherboard based on the entry-level B450M chipset and AM4 socket, with basic features and limited connectivity. It is designed to support DDR4 memory up to 128 GB and memory overclocking up to 4400 MHz. The motherboard features 4 memory slots and offers support for PCIe 3.0 x16, ensuring compatibility with modern GPUs and high-bandwidth expansion cards.

ASUS Prime B450M-A II Performance Review

The ASUS Prime B450M-A II comes with a basic VRM configuration, providing 50 A across 5 phases. It is designed for entry-level to mid-range low-wattage CPUs. Overclocking or using high-wattage CPUs may lead to thermal issues or potential damage. This board is recommended for budget builds or users with modest performance needs.

This motherboard includes an entry-level audio chipset — Realtek ALC887/897 — which provides basic sound quality suitable for casual use. While it’s acceptable for everyday tasks such as web browsing, video playback, and light gaming, it may not meet the expectations of users with mid to high-end audio setups. Audiophiles and those seeking high-fidelity sound should consider using a dedicated sound card or external DAC.

In terms of value, it achieves 71.2% efficiency relative to the best-performing motherboard in its category, making it an excellent choice for users seeking a cost-effective solution.

Motherboard Information

Manufacturer: ASUS

Motherboard Name: ASUS Prime B450M-A II

Current Price Amazon: $89❗N/A

  • Amazon Price Updated: 1 week, 3 days ago.

    • Motherboard Available: False

    Chipset / Socket: B450M / AM4

    Form Factor / Memory Slots: Micro-ATX / 4 slots.

    Memory Type / Max Cap / Max OC: DDR4 / 128 GB / 4400 MHz

    PCIe Suport: PCIe 3.0 x16

    Audio Chipset: Realtek ALC887/897

    Network: Realtek® RTL8111H

    Motherboard Dimensions: 24.4 cm x 24 cm

    Quality & Features (max 110pts)

    VRM Quality: 4 pts.

    Chipset Q & F: 10 pts.

    Build Quality: 6 pts.

    Connectivity Q & F: 6 pts.

    Audio Quality: 6 pts.

    Total Points: 32 pts.

    VRM Configuration

    CPU Power Phases (Amps): 5 (50 A)

    Power Design: 5+1

    Calculated Performance

    Quality and Features per Price: 71.2%

    Additional Motherboard Information

    Memory:

    4 x DIMM, Max. 128GB, DDR4 4400(O.C)/4000(O.C.)/3866(O.C.)/3733(O.C.)/3600(O.C.)/3466(O.C.)/3400(O.C.)/3300(O.C.)/3200(O.C.)/3000(O.C.)/2800(O.C.)/2666/2400/2133 MHz Un-buffered Memory *,3rd/2nd/1st Gen AMD Ryzen™/ 2nd and 1st Gen AMD Ryzen™ with Radeon™ Vega Graphics/ Athlon™ with Radeon™ Vega Graphics Processors,Dual Channel Memory Architecture,ECC Memory (ECC mode) support varies by CPU.,* The maximum memory frequency supported varies by processor.

    Graphics:

    1 x HDMI™ port,Integrated Graphics in the 2nd and 1st Gen AMD Ryzen™ with Radeon™ Vega Graphics/ Athlon™ with Radeon™ Vega Graphics Processors *,*Graphics specifications may vary between CPU types.

    Storage:

    Total supports 1 x M.2 slot(s) and 6 x SATA 6Gb/s ports,3rd/2nd/1st Gen AMD Ryzen™/ 2nd and 1st Gen AMD Ryzen™ with Radeon™ Vega Graphics : *1,Athlon™ with Radeon™ Vega Graphics Processors : *1,3rd/2nd/1st Gen AMD Ryzen™/ 2nd and 1st Gen AMD Ryzen™ with Radeon™ Vega Graphics/ Athlon™ with Radeon™ Vega Graphics Processors : ,1 x M.2 Socket 3, with M key, type 2242/2260/2280/22110 storage devices support (SATA mode),1 x M.2 Socket 3, with M key, type 2242/2260/2280/22110 storage devices support (SATA & PCIE 3.0 x 4 mode),2 x SATA 6Gb/s port(s),,AMD B450 chipset : ,Support Raid 0, 1, 10,4 x SATA 6Gb/s port(s),

    USB:

    2 x USB 3.2 Gen 2 (up to 10Gbps) port(s)(2 x Type-A),Front USB Port ( Total 6 ),Rear USB Port ( Total 6 ),4 x USB 3.2 Gen 1 port(s)(4 x Type-A),2 x USB 3.2 Gen 1 port(s),4 x USB 2.0 port(s)

    Internal I/O:

    1 x COM port header,1 x USB 3.2 Gen 1(up to 5Gbps) connector(s) support(s) additional 2 USB 3.2 Gen 1 port(s) (19-pin),2 x Chassis Fan connector(s) (2 x 4-pin),1 x M.2 Socket 3 with M key, type 2242/2260/2280/22110 storage devices support (SATA & PCIE 3.0 x 4 mode),1 x RGB Header,1 x CPU Fan connector(s) (1 x 4-pin),2 x USB 2.0 connector(s) support(s) additional 4 USB 2.0 port(s),1 x SPI TPM header,1 x COM port(s) connector(s),6 x SATA 6Gb/s connector(s),1 x S/PDIF out header(s),1 x 24-pin EATX Power connector(s),1 x 8-pin ATX 12V Power connector(s),1 x Front panel audio connector(s) (AAFP),1 x System panel(s),1 x Clear CMOS jumper(s),1 x COM port header,1 x Speaker connector

    Back Panel I/O:

    2 x USB 3.2 Gen 2 (teal blue) (2 x Type-A),1 x BIOS FlashBack™ Button(s),4 x USB 3.2 Gen 1 (blue) Type-A,1 x PS/2 keyboard/mouse combo port(s),1 x DVI-D,1 x D-Sub,1 x HDMI,1 x LAN (RJ45) port(s),3 x Audio jack(s)

    WiFi:

    None

    Audio:

    Premium audio capacitors,Realtek ALC887/8977.1-Channel High Definition Audio CODEC *,- Supports : Jack-detection, Multi-streaming, Front Panel Jack-retasking, up to 24-Bit/192kHz playback,- LED-illuminated design,- Audio Shielding,- Dedicated audio PCB layers,Audio Feature :,* Choose the chassis with HD audio module in front panel to support 8-channel audio output.

    Special Features:

    ASUS 5X PROTECTION III
    - ASUS DIGI+ VRM
    - ASUS LANGuard
    - ASUS Overvoltage Protection
    - ASUS SafeSlot Core
    - ASUS Stainless-Steel Back I/O
    ASUS Q-Design
    - ASUS Q-DIMM
    - ASUS Q-Slot
    ASUS Thermal Solution
    - Aluminum heatsink design
    ASUS EZ DIY
    - BIOS FlashBack™ button
    - BIOS FlashBack™ LED
    AURA Sync
    - AURA RGB header
    ASUS Lighting Control