Asus Prime Z390-A Motherboard

Asus Prime Z390-A

Brand
Asus
Model
Prime Z390-A
$237–$262estimated range · from catalog price Sep 4, 2026

ASUS Prime Z390-A: 2018 high-end Z390 ATX board for 8th/9th‑gen Intel; dual M.2, USB 3.1 Gen2, Intel LAN; great for overclocking and expansion.

TierHigh end?GixCore tierWhat a part was built to do — not what it costs.EntryBudgetMainstreamHigh endEnthusiastFlagship A part can be cheap because it is an ageing flagship, or because it is a current entry-level model. The tier tells you which.
ReleasedOct 2018
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SocketLGA1151
ChipsetZ390
MemoryDDR4
Max RAM speed4266 MHz
Form factorATX
RAM slots4
M.2 slots2
PCIe x163
GixCore Editorial

Product overview

Released on October 8, 2018 alongside Intel’s Z390 platform and 9th‑gen Core (Coffee Lake Refresh), the Asus Prime Z390‑A is an ATX LGA1151 board targeting 8th/9th‑gen CPUs.SourcePCWorld

Positioned as a high_end Z‑series option, it exists to unlock CPU overclocking and offer richer I/O than B‑series boards. Good for overclocking, expansion/multi‑M.2, and high‑speed memory in standard mid‑tower builds: four DDR4 DIMM slots with high OC support, three PCIe 3.0 x16 physical slots, two M.2 (PCIe/SATA) plus six SATA, USB 3.1 Gen 2 Type‑A/C, Intel Gigabit LAN, and no onboard Wi‑Fi. Unique: onboard header to support the ASUS ThunderboltEX 3 add‑in card (Thunderbolt 3).Sourceasus.com

Best for
  • overclocking
  • expansion/multi-M.2
  • high-speed memory
  • first-time builders
Official product specifications

Specifications

At a glance iEach dot represents a catalog model. Farther right means a higher measured value, not necessarily a better fit.Measured against the motherboards catalog
Current modelCatalog models
Max RAM speed4266 MHz
Higher than 16% of motherboards
RAM slots4
Higher than 93% of motherboards
M.2 slots2
Higher than 45% of motherboards
Socket
LGA1151
Memory
DDR4
WiFi
No
Integrated Graphics
Yes
USB
3.1
Max Memory Size
64 GB
ECC Support
No
Chipset
Z390
Max RAM speed
4266 MHz
Form factor
ATX
RAM slots
4
M.2 slots
2
PCIe x16
3
Processor Generation
8, 9
Pci E
3.0
M 2
PCI-E, SATA
Sata Slots
6
Sata Speed
6 Gb/s
Pci E Slots
3
Tdp
50 W
Nvme
Yes
Pci E X1
3
Cpu Brand
Intel
Pairing fit

Compatible CPUs

Compatible options ranked for this part's performance class.

Budget pairings6 lower-tier compatible options
Pairing fit

Compatible RAM kits

Compatible options ranked for this part's performance class.

Budget pairings6 lower-tier compatible options
Pairing fit

Compatible Cases

Compatible options ranked for this part's performance class.

Budget pairings6 lower-tier compatible options
Pairing fit

Compatible Power supplies

Compatible options ranked for this part's performance class.

Budget pairings6 lower-tier compatible options