ASUS Prime A520M-K
- Chipset:
- A520
- Socket:
- AM4
- Form Factor:
- Micro-ATX
- Memory:
- DDR4
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Manufacturer: ASUS Last updated: September 11, 2026
ASUS Prime A520M-K (AM4/AMD A520/mATX/Budget/PCIe 3.0) Review
The Prime A520M-K is one of the most affordable current-generation AM4 boards ASUS sells, aimed at budget builders completing a basic Ryzen 5000/4000G/3000 system without discrete overclocking ambitions.
ASUS does not publish an exact VRM phase count for this entry-tier board; it is designed for non-X3D Ryzen chips at stock clocks in basic office or light gaming builds, since the A520 chipset does not support CPU overclocking. Two DDR4 DIMM slots (a notable limitation compared to four-slot boards) support dual-channel operation at standard AMD-supported speeds. Expansion includes a single PCIe 3.0 x16 slot for the GPU. Storage covers a single M.2 slot supporting NVMe drives, alongside SATA ports for additional storage. An onboard Gigabit LAN controller handles wired networking; this board does not include built-in WiFi. Against the Gigabyte A520M DS3H also in this batch, the Prime A520M-K's two-DIMM memory layout is a real limitation for builders who want four memory slots, making the Gigabyte board the better pick for anyone planning to run four sticks of RAM.
Power Delivery and VRM Design
ASUS does not publish an exact VRM phase count for this entry-tier board; it is designed for non-X3D Ryzen chips at stock clocks in basic office or light gaming builds, since the A520 chipset does not support CPU overclocking.
Memory Support
Two DDR4 DIMM slots (a notable limitation compared to four-slot boards) support dual-channel operation at standard AMD-supported speeds.
Expansion and Storage
Expansion includes a single PCIe 3.0 x16 slot for the GPU. Storage covers a single M.2 slot supporting NVMe drives, alongside SATA ports for additional storage.
Connectivity
An onboard Gigabit LAN controller handles wired networking; this board does not include built-in WiFi.
Comparison to Sibling Products
Against the Gigabyte A520M DS3H also in this batch, the Prime A520M-K's two-DIMM memory layout is a real limitation for builders who want four memory slots, making the Gigabyte board the better pick for anyone planning to run four sticks of RAM.
Specifications
Platform and CPU compatibility
| Platform | AMD |
|---|---|
| Socket | AM4 |
| Socket | AMD Ryzen 5000 (non-X3D) / 4000G / 3000 series |
| Chipset | A520 |
Platform
| Socket Type | AM4 |
|---|---|
| Form Factor | Micro-ATX |
Memory
| Memory Type | DDR4 |
|---|---|
| Memory Slots | 2 |
| Max Memory | 64 GB |
| Memory Type | 2x DDR4 DIMM, dual-channel |
Expansion & Connectivity
| M.2 Slots | 1 |
|---|---|
| PCIe 5.0 Support | No |
| Wi-Fi Onboard | No |
Network and audio
| Audio Codec | Realtek codec |
|---|
| Model | Prime A520M-K |
|---|---|
| VRM | Not officially disclosed by ASUS (entry-tier) |
| Expansion | PCIe 3.0 x16 |
| Connectivity | Basic rear I/O |
| Networking | Gigabit LAN (no built-in WiFi) |
| Special Features | 1x M.2 (NVMe) |
Expert Review
Reviewed by Burooj Alam. Rated by us, not by users.
Best for
- The most budget-conscious AM4 builds without overclocking ambitions
- Basic office or light gaming systems
Not for
- Anyone who wants four memory DIMM slots
- Builds that want CPU overclocking support
FAQs
What are the key specifications of the ASUS Prime A520M-K (AM4/AMD A520/mATX/Budget/PCIe 3.0)?
The ASUS Prime A520M-K (AM4/AMD A520/mATX/Budget/PCIe 3.0) is a motherboard from ASUS. Key specs: Socket AM4, Chipset A520, VRM Not officially disclosed by ASUS (entry-tier), Memory 2x DDR4 DIMM, dual-channel, Expansion PCIe 3.0 x16.
Will the ASUS Prime A520M-K (AM4/AMD A520/mATX/Budget/PCIe 3.0) work with my current setup?
The ASUS Prime A520M-K (AM4/AMD A520/mATX/Budget/PCIe 3.0) lists Socket is AM4. Check that against the hardware you already own before buying, since this is the field that most often decides whether a part fits.
Who is the ASUS Prime A520M-K (AM4/AMD A520/mATX/Budget/PCIe 3.0) best suited to?
It suits the most budget-conscious am4 builds without overclocking ambitions, basic office or light gaming systems.
What are the drawbacks of the ASUS Prime A520M-K (AM4/AMD A520/mATX/Budget/PCIe 3.0)?
It is a poor fit for anyone who wants four memory dimm slots, builds that want cpu overclocking support.
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