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ATX motherboard with grey heatsinks and steel-reinforced PCIe slot

ASRock

ASRock Z590 STEEL LEGEND Intel Motherboard

SKU CH-RFTN-19K3B

LGA 1200 ATX board with Intel Z590 chipset supports 10th and 11th Gen Intel Core processors, 128 GB DDR4, PCIe 4.0 M.2, 2.5 Gb LAN and 7.1 audio

  • ProcessorSupports 10th Gen Intel Core Processors Supports 11th Gen In
  • ChipsetIntel Z590
  • Form factorATX
  • CPU socketLGA 1200
  • CPU technologiesTurbo Boost Technology 3.0
  • Memory slot count4 × 288pin (DDR4)
  • Supports 10th and 11th Gen Intel Core CPUs on LGA 1200 socket
  • 14-phase Digi Power design delivers stable power for unlocked K-series processors
  • Four DDR4 slots accept up to 128 GB memory at 4800 MHz with 11th Gen
  • Hyper M.2 socket runs at PCIe 4.0 x4 for 64 Gb/s throughput with 11th Gen CPUs
  • 5 Gigabit LAN and 7.1-channel Realtek ALC897 audio for fast networking and surround sound

LGA 1200 Z590 ATX motherboard for Intel Core

This ASRock Z590 STEEL LEGEND board fits LGA 1200 processors from the 10th and 11th generations. It uses the Intel Z590 chipset and a 14 phase power design to support unlocked K-series CPUs. The ATX form factor provides four DDR4 slots, three PCI Express 3.0 x1 slots and six SATA 6Gb/s ports for storage expansion.

CPU generation decides PCI Express 4.0

With an 11th Gen Core i9, i7 or i5 installed the top PCI Express x16 slot runs at Gen4x16 and the Hyper M.2 socket reaches Gen4x4 64 Gb/s, while DDR4 can reach 4800+(OC) and 3200 native. A 10th Gen Core i9 or i7 limits the primary slot to Gen3x16, caps the M.2 at Gen3x4 and restricts DDR4 to 4666+(OC) with 2933 native; Core i5, i3, Pentium or Celeron drop native DDR4 further to 2666.

Standard ATX install with POST checker and full

The board mounts with regular ATX standoffs and uses a 24-pin plus 8-pin CPU power layout. A Full Coverage M.2 heatsink covers the primary slot so the drive stays cool without extra parts. The POST Status Checker displays two-digit codes for quick troubleshooting, and Full Spike Protection guards USB, audio and LAN ports against surges.

How it compares

Measured against everything we stock in Motherboards for Intel CPUs, at today’s prices. Recalculated every night.

Price $140.99
Pricier than about 69% of the 2,965 comparable items (median $97.99).

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Specifications

Product
Brand nameASRock
Model nameZ590 STEEL LEGEND
Processor
ProcessorSupports 10th Gen Intel Core Processors
Supports 11th Gen Intel Core Processors
CPU socketLGA 1200
ChipsetIntel Z590
CPU technologiesTurbo Boost Technology 3.0
Memory
Memory slot count4 × 288pin (DDR4)
Max supported RAM128 GB
Memory channelsDual Channel
Storage
SATA ports6 x SATA 6Gb/s
M.2 slots1 x Hyper M.2 Socket (M2_1), supports M Key type 2260/2280 M.2 PCI Express module up to Gen4 × 4 (64 Gb/s) (Only supported with 11th Gen Intel Core Processors)**
1 x Ultra M.2 Socket (M2_2), supports M Key type 2260/2280 M.2 SATA3 6.0 Gb/s module and M.2 PCI Express module up to Gen3 x4 (32 Gb/s)**
1 x Ultra M.2 Socket (M2_3), supports M Key type 2260/2280/22110 M.2 SATA3 6.0 Gb/s module and M.2 PCI Express module up to Gen3 x4 (32 Gb/s)**
** Supports Intel Optane Technology
** Supports NVMe SSD as boot disks
** Supports ASRock U.2 Kit
SATA and RAID support0/1/5/10, Intel Rapid Storage Technology 18
Audio & video
Audio chipRealtek ALC897
Sound channels7.1 Channels
Connectivity
Ethernet controllerDragon RTL8125BG
Maximum network speed2.5 Gigabit LAN 10/100/1000/2500 Mb/s
Ports & slots
PCIe 4.0 x16 slots11th Gen Intel Core Processors: 2 x PCI Express x16 Slots (PCIE1/PCIE3: single at Gen4 × 16 (PCIE1); dual at Gen4 × 16 (PCIE1) / Gen3 × 4 (PCIE3))*
10th Gen Intel Core Processors: 2 x PCI Express x16 Slots (PCIE1/PCIE3: single at Gen3 × 16 (PCIE1); dual at Gen3 × 16 (PCIE1) / Gen3 × 4 (PCIE3))*
* Supports NVMe SSD as boot disks
PCIe 3.0 x16 slots1 x PCI Express 3.0 x16
PCIe x1 slots3 x PCI Express 3.0 x1
Size & build
Form factorATX
Width and length12.0 in × 9.6 in
Compatibility
Windows 11 supportSupported
In the box
In the boxQuick Installation Guide, Support CD
2 x SATA Data Cables
4 x Screws for M.2 Sockets
2 x Standoffs for M.2 Sockets
1 x Graphics Card Holder

Questions about this item

Will this board run an 11th Gen Core i5 at its full PCIe 4.0 speed for both the graphics card and the primary M.2 drive?

Yes — with an 11th Gen processor the top x16 slot and the Hyper M.2 socket both operate at Gen4 speeds.

What is the highest DDR4 frequency I can expect with a 10th Gen Core i7 installed?

The memory controller on 10th Gen Core i7 officially supports up to 2933 MT/s; higher speeds require overclocking.

Does the rear I/O include a 2.5 Gb Ethernet port?

Yes, the Dragon RTL8125BG controller provides a single 2.5 Gb LAN connection.

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