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ASRock X370 Killer SLI/ac AM4 AMD Promontory X370 SATA 6Gb/s USB 3.0 HDMI ATX AMD Motherboard

MPN: X370 Killer SLI/ac | SKU: CG5175
Regular Price: $145.79
Price: $134.89
Out Of Stock.
  • AMD Promontory X370
  • Ryzen Series
  • DDR4 3200+ (OC) / 2933 (OC) / 2667 / 2400 / 2133 ECC and non-ECC
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  • Key Selling Points

Key Selling Points

  • AMD Promontory X370
  • Ryzen Series
  • DDR4 3200+ (OC) / 2933 (OC) / 2667 / 2400 / 2133 ECC and non-ECC
  • Description
  • Product Details
  • Customer Reviews
  • Q&A


The ASRock X370 Killer SLI/ac Motherboard runs cohesively with the AMD AM4 processors and includes the latest technologies like DDR4 compatibility, 12 USB 3.0 ports, and PCIe 3.0.

The ASRock X370 KILLER SLI/ac motherboard supports AM4 processors and will fit in a standard ATX case. This board is powered by the AMD X370 chipset and has support for 4 x 288-pin DIMM memory sticks with a max memory of up to 64GB. You can choose memory speeds of up to DDR4-2133 / 2400 / 2666. This motherboard has 6 SATA ports and 1 x 10/100/1000 Mbps Ethernet built-in. Advanced features of the motherboard include: support for RAID, support for Crossfire, support for SLI, stylish Black / White design.

  • AMD Promontory X370
  • Supports AMD Socket AM4 A-Series APUs (Bristol Ridge) and Ryzen Series CPUs (Summit Ridge and Raven Ridge)
  • AMD Ryzen series CPUs, Summit Ridge; Raven Ridge; AMD 7th Gen A-Series APUs support DDR4 memory
  • *Please refer to Memory Support List on ASRock's website for more information.


  • ASRock X370 Killer SLI/ac AM4 AMD Promontory X370 SATA 6Gb/s USB 3.0 HDMI ATX AMD Motherboard
  • Driver Disk
  • Manual
  • SATA Cables
  • I/O Shield

Brand: ASRock

MPN: X370 Killer SLI/ac

UPC: 4717677333275

Compatibility: AM4

Packaging: Retail

Condition: New

Product Details

X370 Killer SLI/ac
CPU Socket Type
Processor Type
Supports AMD Socket AM4 A-Series APUs (Bristol Ridge) and Ryzen Series CPUs (Summit Ridge and Raven Ridge)
AMD Promontory X370
Number of Memory Slots
Memory Standard
AMD Ryzen series CPUs (Summit Ridge): DDR4 2933(OC)/ 2667/ 2400/ 2133*
AMD Ryzen series CPUs (Raven Ridge): DDR4 2933+(OC)/ 2667/ 2400/ 2133*
AMD 7th Gen A-Series APUs support DDR4 2400/ 2133*

*Please refer to Memory Support List on ASRock's website for more information.
Maximum Memory Supported
*Due to the operating system limitation, the actual memory size may be less than 4GB for the reservation for system usage under Windows 32-bit OS. For Windows 64-bit OS with 64-bit CPU, there is no such limitation.
Channel Supported
Dual Channel
PCI Express 3.0 x16
AMD Ryzen series CPUs
- 2 x PCI Express 3.0 x16 Slots (single at x16 (PCIE2); dual at x8 (PCIE2) / x8 (PCIE4))*
AMD 7th A-Series APUs/ Raven Ridge CPUs
- 1 x PCI Express 3.0 x16 Slot (single at x8 (PCIE2))*
PCI Express x1
4 x PCI Express 2.0 x1 Slots
Other Slots
1 x M.2 Socket (Key E), supports type 2230 Wi-Fi/BT module
15µ Gold Contact in VGA PCIe Slot (PCIE2)
SATA 6Gb/s
6 x SATA3 6.0Gb/s Connectors, support RAID, NCQ, AHCI and Hot Plug
M.2 (M Key)
1 x Ultra M.2 Socket (M2_1), supports 2230/2242/2260/2280*
1 x M.2 Socket (M2_2), supports 2230/2242/2260/2280*
*Supports NVMe SSD as boot disks
* Supports ASRock U.2 Kit
** M2_1 and M2_2 supports M.2 SATA3 6Gb/s modules. M2_1 supports 32Gb/s PCIe Gen3 x4 (with Ryzen Series CPUs), or Gen 3 x2 (16Gb/s, A-Series APU) and 10Gb/s Gen 2 x2 for M2_2
Onboard Video Chipset
Integrated AMD Radeon Vega Series Graphics in Ryzen Series APU*
Integrated AMD Radeon R-Series Graphics in A-series APU*
DirectX 12, Pixel Shader 5.0
Max. shared memory 2GB
Supports HDMI with max. resolution up to 4K x 2K (4096x2160) @ 24Hz / (3840x2160) @ 30Hz
Supports Auto Lip Sync, Deep Color (12bpc), xvYCC and HBR (High Bit Rate Audio) with HDMI Port (Compliant HDMI monitor is required)
Supports HDCP with HDMI Port
Supports Full HD 1080p Blu-ray (BD) playback with HDMI Port

*Actual support may vary by CPU
Audio Chipset
Realtek ALC892
Audio Channels
7.1 Channels
LAN Chipset
Intel i211AT
Max LAN Speed
Wireless LAN
Intel 802.11 ac Wi-Fi Module
Supports IEEE 802.11 a/b/g/n/ac
Supports Dual-Band (2.4/5 GHz)
Supports high speed wireless connections up to 433 Mbps
Supports Bluetooth 4.2 / 3.0 + High speed class II
1 x PS/2 Mouse Port
1 x PS/2 Keyboard Port
1 x HDMI
1 x RJ-45 LAN Port with LED (ACT/LINK LED and SPEED LED)
USB 3.1
1 x USB 3.1 Gen1 Type-A Port
1 x USB 3.1 Gen1 Type-C Port
6 x USB 3.1 Gen1 Ports
1 x Optical
Audio Ports
HD Audio Jacks: Rear Speaker / Central / Bass / Line in / Front Speaker / Microphone
Onboard USB
2 x USB 2.0 Headers (Support 4 USB 2.0 ports)
2 x USB 3.1 Gen1 Headers (Support 4 USB 3.1 Gen1 ports)
Other Connectors
1 x COM Port Header
1 x TPM Header
1 x Power LED and Speaker Header
1 x AMD Fan LED Header*
2 x RGB LED Headers*
1 x CPU Fan Connector (4-pin)**
1 x CPU Optional/Water Pump Fan Connector (4-pin)***
2 x Chassis Fan Connectors (4-pin)
1 x Chassis Optional/Water Pump Fan Cooler (4-pin)***
1 x Front Panel Audio Connector
1 x AMD LED Fan USB Header

*Supports in total up to 12V/3A, 36W LED Strip.
*The AMD Fan LED Header supports LED strips of maximum load of 3A (36W) and length up to 2.5M.
**The CPU Fan Connector supports the CPU fan of maximum 1A (12W).
***The CPU Optional/Water Pump Fan and the Chassis Optional/Water Pump Fan supports the water cooler fan of maximum 1.5A (18W).
****CHA_FAN2 can auto detect if 3-pin or 4-pin fan is in use.
*****CPU Cooler, Chassis Fan Connectors and Chassis Water Pump Fan connector has Smart Fan Speed Control
Form Factor
Dimensions (W x L)
12.0" x 9.6"
Power Pin
1 x 24-pin ATX Power Connector (Hi-Density Power Connector)
1 x 8-pin 12V Power Connector (Hi-Density Power Connector)
Unique Feature:
ASRock Super Alloy
- XXL Aluminum Alloy Heatsink
- Premium 45A 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
- 2oz Copper PCB
ASRock Steel Slots
ASRock Ultra M.2 (PCIe Gen3 x4 & SATA3)
ASRock Full Spike Protection (for all USB, Audio, LAN Ports)
ASRock Live Update & APP Shop

- 128MB AMI UEFI Legal BIOS with GUI support
- Supports "Plug and Play"
- ACPI 5.1 compliance wake up events
- Supports jumperfree
- SMBIOS 2.3 support
- CPU, VCORE_NB, DRAM, VPPM, PCH 1.05V, +1.8V, VDDP, PROM 2.5V, Voltage Multi-adjustment

Software and UEFI:
- ASRock A-Tuning
- ASRock APP Charger
- ASRock XFast LAN
- ASRock Full HD UEFI
- ASRock Instant Flash
- ASRock Internet Flash
- ASRock Easy RAID Installer
*These utilities can be downloaded from ASRock Live Update & APP Shop.

Support CD:
- Drivers, Utilities, AntiVirus Software (Trial Version), Google Chrome Browser and Toolbar

Hardware Monitor:
CPU, CPU Optional/Water Pump, Chassis, Chassis Optional/Water Pump Fans:
- Temperature Sensing
- Fan Tachometer
- Quiet Fan (Auto adjust chassis fan speed by CPU temperature):
- Fan Multi-Speed Control:
- Voltage monitoring: +12V, +5V, +3.3V, CPU Vcore, VCORE_NB, DRAM, PCH 1.05V, +1.8V, VDDP

- Microsoft Windows 10 64-bit*
*For the updated Windows 10 driver, please visit ASRock's website for details.

- ErP/EuP ready (ErP/EuP ready power supply is required)

Package Includes

Customer Reviews

Review Summary
100.0% (1)
0.0% (0)
0.0% (0)
0.0% (0)
0.0% (0)
By Justin Jones
Great motherboard
First build. Great experience


Question & Answers
By OutletPC Shopper on 2019-05-11
It seems like there is m.2 WiFi on the board but are there antennas included?

By Customer Service on 2019-05-14

Yes, wifi antennas would be included with this motherboard as it supports Wi-Fi.

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