The ASRock Extreme4 is the flagship in the Extreme lineup, offering some of the same features as the Fatal1ty Gaming line. It uses the same flavor of power delivery with 60A chokes, Nichicon Combo caps, and Dual-Stack MOSFETs. What is missing on the overclocking front is the Hyper BCLK generator, so the range in which one can adjust the BCLK may not be as wide. This shouldn’t be a big issue for most considering the unlocked CPUs which will likely find their way into this socket.
The Z370 Extreme4 uses an all-black PCB with a few ‘racing’ stripes running through the board from the top left to the bottom right through the PCIe area and chipset heatsink. The Extreme4 uses the same shape and style VRM heatsinks found on the high-end boards, albeit without a heatpipe connecting them. The same style shrouding over the back panel and audio section is carried over from the flagship, and contains RGB LED features as well. The chipset heatsink is different, a bit more basic, and has RGB LEDs underneath. All the RGB LEDs, including the RGB header, can be controlled with ASRock RGB LED software.
Featuring a durable design that implements a 12 Power Phase Digital PWM design, robust motherboard cooling and more, the Extreme 4 promises to be a powerhouse for the new Intel CPUs. Allowing for high overclocks and improved stability on your memory, PCIe devices, and the CPU. Even better, it looks set to do so without breaking the bank.
- Supports 8th Generation Intel Core Processors (Socket 1151)
- Digital PWM, 12 Power Phase
- Supports DDR4 4333+(OC)
- 3 PCIe 3.0 x16, 3 PCIe 3.0 x1, 1 M.2 (Key E)
- NVIDIA Quad SLI, AMD 3-Way CrossFireX
- Graphics Output Options : HDMI, DVI-D, D-Sub
- 7.1 CH HD Audio (Realtek ALC1220 Audio Codec)
- Supports Purity Sound 4 & DTS Connect
- 8 SATA3, 2 Ultra M.2 (PCIe Gen3 x4 & SATA3)
- 2 USB 3.1 Gen2 10Gb/s (1 Type-A + 1 Type-C)
- 9 USB 3.1 Gen1 (1 Front Type-C, 4 Front Type-A, 4 Rear)
- Intel Gigabit LAN
- ASRock RGB LED
- Intel Optane Memory Ready
The Z270 Extreme4 has a unique PCB silk screen that plays right into heat sink design. Together with the PCH heat sink, the silkscreen creates a large white "X" that spreads across the motherboard. I assume the "X" is for ASRock's Extreme series of motherboards, indicating that the product is built for enthusiasts.
ASRock offers five PWM/DC mode fan headers on the motherboard - I have circled them in red and blue. The two red headers support up to 1.5A current and include W_PUMP in their name as they are designed to double as water pump headers. The other headers circled in blue provide 1A current. You can choose between PWM (4-pin) or DC/Voltage (3-pin) fan operation mode in the UEFI or through ASRock's A-Tuning application in Windows. The motherboard's black and white color theme is a popular one this round, and ASRock has a competitive product in that regard. I like how the PCB silk screen matches up with the PCH heat sink and IO shield's design. You can imagine the white as busses through which motherboard data moves, or just a link between different components, or just take it as what it is, decoration.
There are two USB 3.1 (10 Gbps) Type-A and Type-C ports on the rear panel via an ASM3142 controller, and four USB 3.1 (5 Gbps) ports fed from the chipset. Internally there are an additional three headers for USB 2.0 providing 6 ports, and two headers for USB 3.1 5Gbps support driven by the chipset or ASM1074 hub. There is also an additional new generation USB header, but this looks like it is only at 5 Gbps. The rest of the back panel consists of space for a Wi-Fi antenna in the E-key space, a combination PS/2 port, D-Sub, DVI-D, and HDMI ports for video output, and the 5 plug plus SPDIF audio stack.
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