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Biostar Z890AX-E Pro specifications and in-depth review

Biostar Z890AX-E Pro

Manufacturer: Biostar

The Biostar Z890AX-E Pro is an ATX-form-factor motherboard designed around Intel's LGA 1851 platform and the Z890 chipset. It measures 305 mm by 244 mm and ships with a three-year warranty. The board supports overclocking out of the box, and its dual-BIOS design adds a layer of resilience when experimenting with firmware settings. RGB lighting is absent, keeping the aesthetic understated.

Memory support extends to four DDR5 slots across two channels, with a rated maximum of 192 GB, speeds up to 5600 MHz at specification, and overclocked profiles reaching 8000 MHz. Expansion options include one PCIe 5.0 x16 slot and one PCIe 4.0 x16 slot alongside two PCIe x1 slots, while storage connectivity is covered by four SATA 3 connectors and four M.2 sockets with full RAID 0, 1, 5, and 10 support. The rear panel provides seven USB 3.2 Gen 2 Type-A ports, one USB 3.2 Gen 2 Type-C, HDMI 2.1, one DisplayPort output, and a single RJ45 Ethernet jack. Audio is handled by a 7.1-channel codec rated at a 120 dB signal-to-noise ratio.

Pros
  • Four M.2 sockets provide ample high-speed storage expansion for demanding workloads
  • Dual-BIOS design adds firmware resilience when updating or experimenting with BIOS settings
  • Overclocked RAM support up to 8000 MHz allows significant memory performance headroom
  • Seven USB 3.2 Gen 2 Type-A ports on the rear panel cover a wide range of high-speed peripherals
  • Full RAID 0, 1, 5, and 10 support offers flexible storage redundancy and performance configurations
  • 120 dB signal-to-noise ratio on the onboard audio codec delivers clean analog output
Cons
  • No Wi-Fi or Bluetooth onboard, requiring separate adapters for wireless connectivity
  • Easy CMOS reset is not supported, making BIOS recovery less straightforward
  • No USB 4, Thunderbolt 3, or Thunderbolt 4 ports are available on the rear panel
  • ECC memory is not supported, limiting suitability for error-sensitive workloads
  • No S/PDIF Out port restricts digital audio output options
Who is this for?

This board is a solid fit for enthusiast desktop builders who want to push their system's limits, given its support for overclocked DDR5 memory up to 8000 MHz and a PCIe 5.0 x16 slot for the latest discrete graphics or storage cards. The four M.2 sockets and full RAID 0, 1, 5, and 10 support make it equally well-suited for users who need flexible, high-capacity storage configurations, such as content creators or small workstation builds. The dual-BIOS feature also appeals to those who frequently experiment with firmware settings and want a safety net against failed updates.

Who is this NOT for?

Users who rely on wireless connectivity will find this board lacking, as there is no onboard Wi-Fi or Bluetooth, which makes it a poor choice for builds in environments where running a network cable is impractical. It is equally unsuitable for professionals requiring ECC memory support, such as those running data-critical or error-sensitive applications, since that capability is absent. Additionally, the lack of Thunderbolt ports makes it a weak match for users who depend on high-bandwidth external devices like fast external storage arrays or professional audio and video interfaces that rely on that standard.

General info:

CPU socket LGA 1851
chipset Z890
form factor ATX
supports Wi-Fi ✕
Has Bluetooth ✕
HDMI version HDMI 2.1
Easy to overclock ✓
has RGB lighting ✕
Easy to reset BIOS ✕
Has dual BIOS ✓
CPU sockets 1
Has integrated graphics ✕
warranty period 3 years
height 244 mm
width 305 mm
Has integrated CPU ✕

The Biostar Z890AX-E Pro uses the LGA 1851 socket paired with the Z890 chipset and follows the standard ATX form factor, measuring 305 mm wide by 244 mm tall. It accommodates a single CPU and does not include an integrated processor or onboard graphics. The board supports overclocking and features a dual-BIOS configuration for added firmware reliability, though a one-click CMOS reset option is not available. Wi-Fi and Bluetooth are absent, and the board ships without RGB lighting. Video output is available via an HDMI 2.1 port. Biostar backs the board with a three-year warranty.

Memory:

maximum memory amount 192GB
RAM speed (max) 5600 MHz
overclocked RAM speed 8000 MHz
memory slots 4
DDR memory version 5
memory channels 2
Supports ECC memory ✕

The board features four DDR5 memory slots arranged across two channels, supporting a maximum capacity of 192 GB. At stock speeds, RAM can run up to 5600 MHz, while overclocking profiles push that ceiling to 8000 MHz. ECC memory is not supported.

Ports:

USB 3.2 Gen 2 ports (USB-A) 7
USB 3.2 Gen 1 ports (USB-A) 0
USB 3.2 Gen 2 ports (USB-C) 1
USB 3.2 Gen 1 ports (USB-C) 0
USB 2.0 ports 0
USB 3.2 Gen 2x2 ports 0
USB 4 40Gbps ports 0
USB 4 20Gbps ports 0
Thunderbolt 4 ports 0
Thunderbolt 3 ports 0
has an HDMI output ✓
DisplayPort outputs 1
RJ45 ports 1
Has USB Type-C ✓
eSATA ports 0
DVI outputs 0
has a VGA connector ✕
PS/2 ports 0

The rear I/O panel offers a generous USB lineup led by seven USB 3.2 Gen 2 Type-A ports alongside one USB 3.2 Gen 2 Type-C port; there are no USB 2.0, Gen 1, Gen 2x2, USB 4, Thunderbolt, or legacy PS/2 ports present. Video output is handled by one HDMI and one DisplayPort, while VGA and DVI outputs are absent. Network connectivity is provided through a single RJ45 Ethernet jack, and there are no eSATA ports on the panel.

Connectors:

USB 3.2 Gen 2 ports (through expansion) 2
USB-C 3.2 Gen 2 ports (through expansion) 1
USB 2.0 ports (through expansion) 4
SATA 3 connectors 4
fan headers 5
USB 3.0 ports (through expansion) 2
M.2 sockets 4
Has TPM connector ✓
U.2 sockets 0
Has mSATA connector ✕
SATA 2 connectors 0

Internal connectivity is well-covered, with four M.2 sockets and four SATA 3 connectors for storage; there are no SATA 2, mSATA, or U.2 sockets. USB expansion headers include two USB 3.2 Gen 2 ports, one USB-C 3.2 Gen 2 port, two USB 3.0 ports, and four USB 2.0 ports, all routed through internal connectors. The board provides five fan headers for cooling management and includes a TPM connector for security module support.

Expansion slots:

PCIe 4.0 x16 slots 1
PCIe 5.0 x16 slots 1
PCIe 3.0 x16 slots 0
PCIe x1 slots 2
PCI slots 0
PCIe 2.0 x16 slots 0
PCIe x4 slots 0
PCIe x8 slots 0

The board offers a total of four expansion slots: one PCIe 5.0 x16 slot, one PCIe 4.0 x16 slot, and two PCIe x1 slots. There are no PCIe 2.0, 3.0, x4, or x8 slots, and no legacy PCI slots are present.

Audio:

Signal-to-Noise ratio (DAC) 120 dB
audio channels 7.1
Has S/PDIF Out port ✕
audio connectors 3

The onboard audio supports 7.1-channel output and delivers a signal-to-noise ratio of 120 dB from the DAC, with three analog audio connectors available on the rear panel. An S/PDIF Out port is not included.

Storage:

Supports RAID 1 ✓
Supports RAID 10 (1+0) ✓
Supports RAID 5 ✓
Supports RAID 0 ✓
Supports RAID 0+1 ✕

The board supports four RAID configurations: RAID 0, 1, 5, and 10, covering a range of performance and redundancy setups. RAID 0+1 is not supported.

Final Verdict

The Biostar Z890AX-E Pro is a capable ATX motherboard built around the LGA 1851 platform that caters well to enthusiast builders and storage-focused workstation users alike. Its four M.2 sockets combined with PCIe 5.0 support and overclockable DDR5 memory give it a strong foundation for high-throughput builds, and the dual-BIOS design adds practical reliability for those who push firmware boundaries. That said, the absence of onboard wireless, Thunderbolt connectivity, and ECC support does narrow its appeal for certain professional and mobile-adjacent use cases. On balance, the Z890AX-E Pro is a well-specified board for desktop enthusiasts who prioritize storage flexibility, overclocking headroom, and a dense USB rear panel over wireless convenience.