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ATX motherboard in black with silver heatsinks and four DDR4 slots

ASRock

ASRock Z270 Killer SLI LGA 1151 ATX Intel motherboard

SKU CH-JYPC-ZX3JT

ATX board for LGA 1151 CPUs with Intel Z270 chipset, four DDR4 slots up to 64GB, two PCIe 3.0 x16 slots, six SATA 6.0Gb/s ports, two M.2 sockets, 7.1 audio and gigabit LAN

  • CPU Socket TypeLGA 1151
  • Supported CPU TechnologiesTurbo Boost Technology 2.0
  • ChipsetIntel Z270
  • Onboard Video ChipsetSupports Intel HD Graphics Built-in Visuals: Intel Quick Syn
  • Number of Memory Slots4x288pin (DDR4)
  • Memory StandardDDR4 3733+(OC)*/ 3600(OC)/ 3200(OC)/ 2933(OC)/ 2800(OC)/ 240
  • Supports 6th and 7th Gen Intel Core CPUs on LGA 1151 socket
  • Four DDR4 slots accept up to 64 GB at speeds up to 3733+(OC)
  • Two PCIe 3.0 x16 slots run at x16 or dual x8 for SLI graphics
  • Two Ultra M.2 sockets deliver PCIe Gen3 x4 32 Gb/s and SATA 6.0 Gb/s
  • Intel I219-V 1 Gbps LAN plus Realtek ALC892 7.1-channel audio

Z270 chipset LGA 1151 board

The ASRock Z270 Killer SLI is an ATX motherboard built for 6th and 7th generation Intel Core, Pentium and Celeron processors. It delivers the Z270 feature set including CPU overclocking support and multi-GPU capability for enthusiasts building a high-performance desktop.

DDR4 memory limits and PCIe 3.0 lanes

Four 288-pin slots accept DDR4 up to 3733+(OC) with a 7th generation CPU, while 6th generation processors top out at 2133. Maximum capacity is 64GB. Two PCIe 3.0 x16 slots run at x16 single or x8/x8 dual, and four PCIe 3.0 x1 slots provide additional expansion bandwidth.

Storage headroom with dual Ultra M.2

Six SATA3 6.0Gb/s ports support RAID 0, 1, 5, 10 plus Intel Rapid Storage Technology 15. Two Ultra M.2 sockets take 2230 to 2280 modules at PCIe 3.0 x4 (32Gb/s) or SATA3 6.0Gb/s, with NVMe boot support and Intel Optane technology compatibility.

Highlights

  • Supports 6th and 7th Gen Intel Core CPUs on LGA 1151 socket
  • Four DDR4 slots accept up to 64 GB at speeds up to 3733+(OC)
  • Two PCIe 3.0 x16 slots run at x16 or dual x8 for SLI graphics
  • Two Ultra M.2 sockets deliver PCIe Gen3 x4 32 Gb/s and SATA 6.0 Gb/s
  • Intel I219-V 1 Gbps LAN plus Realtek ALC892 7.1-channel audio

Specifications

BrandASRock
ModelZ270 Killer SLI
CPU Socket TypeLGA 1151
Supported CPU TechnologiesTurbo Boost Technology 2.0
ChipsetIntel Z270
Onboard Video ChipsetSupports Intel HD Graphics Built-in Visuals: Intel Quick Sync Video with AVC, MVC (S3D) and MPEG-2 Full HW Encode1, Intel InTru 3D, Intel Clear Video HD Technology, Intel Insider, Intel HD Graphics
Gen9 LP, DX11.3, DX12
HWA Encode/Decode: VP8, HEVC 8b, VP9, HEVC 10b (For 7th Gen Intel CPU)
HWA Encode/Decode: VP8, HEVC 8b; GPU/SWEncode/Decode: VP9, HEVC 10b (For 6th Gen Intel CPU)
Max. shared memory 1024MB**
Dual graphics output: Support DVI-D and HDMI ports by independent display controllers
Supports HDMI with max. resolution up to 4K x 2K (4096x2160) @ 24Hz / (3840x2160) @ 30Hz
Supp
Number of Memory Slots4x288pin (DDR4)
Memory StandardDDR4 3733+(OC)*/ 3600(OC)/ 3200(OC)/ 2933(OC)/ 2800(OC)/ 2400**/ 2133
* Please refer to Memory Support List on ASRock's website for more information.
** 7th Gen Intel CPU supports DDR4 up to 2400; 6th Gen Intel CPU supports DDR4 up to 2133.
Maximum Memory Supported64GB
PCI Express 3.0 x162 x PCI Express 3.0 x16 Slots (PCIE2/PCIE4: single at x16 (PCIE2); dual at x8 (PCIE2) / x8 (PCIE4))*
* Supports NVMe SSD as boot disks
PCI Express x14 x PCI Express 3.0 x1 Slots (Flexible PCIe)
Serial ATA (SATA)6 x SATA3 6.0Gb/s Connectors, support RAID (RAID 0, RAID 1, RAID 5, RAID 10, Intel Rapid Storage Technology 15 and Intel Smart Response Technology), NCQ, AHCI and Hot Plug*
*If M2_1 is occupied by a SATA-type M.2 device, SATA_5 will be disabled. If M2_2 is occupied by a SATA-type M.2 device, SATA_0 will be disabled.
M.22 x Ultra M.2 Sockets, support M Key type 2230/2242/2260/2280 M.2 SATA3 6.0Gb/s module and M.2 PCI Express module up to Gen3 x4 (32Gb/s)**
** Supports Intel Optane Technology
Supports NVMe SSD as boot disks**
Supports ASRock U.2 Kit
Audio ChipsetRealtek ALC892
Audio Channels7.1 Channels
LAN ChipsetIntel I219-V
Max LAN Speed1Gbps
PS/21 x PS/2 keyboard/mouse port
Video Ports1 x DVI-D Port
HDMI1 x HDMI
RJ451 x RJ-45 LAN Port with LED (ACT/LINK LED and SPEED LED)
USB 3.05 x USB 3.0 Type-A Ports (Supports ESD Protection (ASRock Full Spike Protection))
USB Type-C1 x USB 3.0 Type-C Port (Supports ESD Protection (ASRock Full Spike Protection))
S/PDIF Out1 x Optical
Audio PortsHD Audio Jacks: Rear Speaker / Central / Bass / Line in / Front Speaker / Microphone
Onboard USB3 x USB 2.0 Headers (Support 5 USB 2.0 ports) (Supports ESD Protection (ASRock Full Spike Protection))
1 x USB 3.0 Header (Supports 2 USB 3.0 ports) (Supports ESD Protection (ASRock Full Spike Protection))
Other Connectors1 x COM Port Header
1 x TPM Header
1 x Chassis Intrusion Header
1 x Power LED and Speaker Header
1 x AURA RGB LED Header*
1 x CPU Fan Connector (4-pin)**
2 x Chassis Fan Connectors (4-pin) (Smart Fan Speed Control)
1 x Chassis Optional/Water Pump Fan Connector (4-pin) (Smart Fan Speed Control)***
1 x Front Panel Audio Connector
1 x Thunderbolt AIC Connector (5-pin)
1 x Thunderbolt AIC Connector (10-pin)****
* Supports up to 12V/3A, 36W LED Strip.
** The CPU Fan Connector supports the CPU fan of maximum 1A (12W) fan power.
*** The Chassis Optional/Water Pump Fan supports the water coo
Form FactorATX
Dimensions (W x L)12.0" x 8.8"
Power Pin1 x 24 pin ATX Power Connector
1 x 8 pin 12V Power Connector
FeaturesUnique Feature
ASRock Super Alloy
- Premium 40A Power Choke
- Nichicon 12K Black Caps (100% Japan made high quality conductive polymer capacitors)
- I/O Armor
- Sapphire Black PCB
- High Density Glass Fabric PCB
ASRock Intel 4-Layer Memory POOL (Planes on Outer Layers) Technology
ASRock Steel Slots
ASRock Ultra M.2 (PCIe Gen3 x4 & SATA3)
ASRock Full Spike Protection
ASRock Live Update & APP Shop
BIOS
- 128MB AMI UEFI Legal BIOS with multilingual GUI support
- ACPI 6.0 Compliant wake up events
- SMBIOS 2.7 Support
- CPU, GT_CPU, DRAM, VPP, PCH 1.0V, VCCIO, VCCST, VCCSA, VCCPLL Voltage

Questions about this item

Which DDR4 speed should I pick for a 7th Gen Intel CPU on this board?

The board lists DDR4 up to 2400 for 7th Gen CPUs; higher speeds such as 3733+(OC) are only validated with specific modules on the vendor memory support list.

What does the Ultra M.2 Gen3 x4 (32Gb/s) figure mean for an NVMe drive in daily use?

The Ultra M.2 sockets run at PCIe 3.0 x4, providing a 32 Gb/s electrical link; actual NVMe throughput will be lower after protocol overhead and depends on the drive itself.

How many PCIe 3.0 x16 slots are usable for SLI and at what lane width?

Two PCIe 3.0 x16 slots are present; they run at x16 when one is used and split to x8/x8 when both are populated for SLI.

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