This article covers ASUS INTEL Z490 搭載 LGA1200 対応 PRIME Z490-P 【 ATX 】.

Overview

ASUS PRIME Z490-P is a LGA1200 ATX motherboard built on the Intel Z490 chipset, designed for 10th Gen Intel Core processors. It sits comfortably in the entry-to-midrange segment, offering overclocking support, dual M.2 slots, and a robust USB complement at a surprisingly low price point — often found under $60. This board is an excellent choice for budget-conscious builders who want Z-series features without the premium cost.
The board supports up to 128GB of DDR4 memory across four DIMM slots, with official support for speeds up to DDR4-4600 via overclocking. Storage options include two M.2 slots (both NVMe/SATA compatible) and four SATA 6Gb/s ports, providing ample room for a fast boot drive plus mass storage. Expansion is covered by two PCIe 3.0 x16 slots (one runs at x4 electrically) and four PCIe 3.0 x1 slots, allowing for GPUs, capture cards, or other add-in boards. On the rear I/O, you'll find a generous selection of USB ports: eight USB 3.2 Gen 1/Gen 2 Type-A and six USB 2.0 ports.
While the PRIME Z490-P lacks the flashiest VRM and omits newer standards like PCIe 4.0 and Wi-Fi 6, it delivers rock-solid stability for everyday computing and gaming. Realtek 1Gb Ethernet keeps wired networking reliable, and the ASUS UEFI BIOS offers intuitive overclocking controls even for beginners.

Compatibility Guide

The PRIME Z490-P uses socket LGA1200 and is strictly compatible with 10th Gen Intel Core / Pentium Gold / Celeron processors (Comet Lake-S). It does not support 11th Gen Rocket Lake CPUs. Memory must be DDR4 unbuffered non-ECC, with a maximum capacity of 128GB across four slots.
Form factor is standard ATX (305mm x 234mm), fitting any ATX or larger case. Power delivery requires a 24-pin main connector and a single 8-pin EPS12V CPU power connector. For typical mid-range builds (e.g., Core i5-10400 + RTX 3060), a 550W PSU suffices; for Core i7-10700K or higher, a quality 650W+ unit is recommended.
Storage connectivity includes four SATA 6Gb/s ports and two M.2 slots (both through the chipset, not CPU-direct). M.2 slots support both PCIe NVMe and SATA SSDs, but note that M.2_1 shares bandwidth with SATA port 1 — refer to the manual when populating SATA drives. The primary PCIe x16 slot operates at PCIe 3.0 x16; the second slot runs at PCIe 3.0 x4. All expansion is PCIe 3.0 generation, so modern GPUs will run fine albeit at Gen 3 speeds (negligible real-world difference).

Product Info

Released in Q2 2020, the PRIME Z490-P originally retailed around ¥12,000 ($110) but has since dropped significantly and can now be found for as little as ¥6,000 ($40) on Japanese marketplaces. The Intel Z490 chipset provides full overclocking support, Intel Optane Memory compatibility, and RAID 0/1/5/10 across SATA and M.2. The board uses a 10+1 DrMOS VRM design, adequate for stock and moderate overclocks on Core i7 and lower i9 parts. Warranty is three years through ASUS official channels.
Market positioning: budget to mid-range. It undercuts newer chipsets (B560, Z590) in price while still offering Z-series features. Ideal for builders who already own a 10th Gen CPU or want a cheap motherboard for a secondary PC.

Best Use Cases

  • First-time budget PC builder: With a price under $50, this board allows you to allocate more budget toward a better CPU or GPU. It includes all the essentials: M.2, USB 3.2, and a clear BIOS. However, lack of BIOS Flashback means you must ensure your CPU is supported out of the box, or have another LGA1200 CPU for updates.
  • Mid-range gaming rig with i5-10400 or i7-10700: Pair with an RTX 3060/4060 or RX 6600 for 1080p/1440p gaming. The board's VRM handles these CPUs without issue. Not ideal for extreme overclocking but fine for stock+boost operation.
  • Home server or media center: Dual M.2 slots let you run a fast cache drive alongside large SATA HDDs. The many USB ports (14 total) are great for external storage and peripherals. The board supports Intel RAID, providing data redundancy for critical files.
  • Office or productivity build: For less demanding workloads like web browsing, Office apps, and light video editing, this board combined with a Core i3-10100 or i5-10400 offers excellent value.
  • Who should NOT buy: Users who need PCIe 4.0 (e.g., for future-proofing with Gen4 SSDs or GPUs) should look at B560 or Z590 boards. Enthusiasts planning to run Core i9-10900K with heavy overclocks will find the VRM insufficient and should step up to the PRIME Z490-A or ROG STRIX series.

Things to Consider

The main limitation is the absence of PCIe 4.0 support. While not a dealbreaker for current games and apps, it may become a concern if future software relies heavily on Gen4 bandwidth. Also, the board lacks integrated Wi-Fi and Bluetooth, so a separate adapter is needed if wireless connectivity is required.
VRM cooling is adequate for stock i7 and below, but prolonged heavy loads with an i9-10900K can push tem

Product Disclosure (Amazon)

  • Manufacturer: ASUS
  • ASIN: B07ZT3CYBD
  • Note: This article covers a manufacturer-made product based on Amazon listing details.