Question 1

does this support 3900X?

Accepted Answer

Very easily! The VRM will easily support even the upcoming 3950X, and will also allow you to overclock both CPU’s with out any complications. Very good board, though I would recommend updating the BIOS as soon as you get it. Had some issues with the board before I updated the BIOS that went away with the update! Highly recommend the board!!!

Question 2

Will this board support pci-e gen 3.0 m.2 devices with 3rd gen Ryzen CPUs?

Accepted Answer

Yes it supports it.  It's backwards compatible with the earlier generations of PCI devices.  I'm running a gen 4 NVMe drive on mine and it works great, but it will run any of them.  Note that there's a heat shield on this motherboard, so for some of the Gen 4 devices, which have built in heat dissipators of their own, you may have to choose between removing one of the onboard heat dissipation shields, or the one on your NVMe drive.  I chose to pop off the one over the M.2_2 port and keep the big copper covers that came with my stock NVMe drive, and it seems to work fine that way.  A normal NVMe PCI-e drive with no added heatsink hardware on it should fit under the provided heatsink shield just fine though.

Question 3

Are the m.2 heatsinks good enough to cool a corsair mp600?

Accepted Answer

I have both of these, and no they definitely aren't up to the cooling capacity of the original Corsair heatsink. Another thing to note is how far the Corsair heatsink sticks out. I have an extension cable to mount my 2080 Super vertically, so it doesn't affect me, but I could see it easily posing a problem if you want to use the gen 4 slot and a graphics card in the top most x16 slot.

Question 4

Anyone have a rough estimate of their post time?  I've been seeing 30 seconds only for x570 boards in general (just to get to the windows starting screen)--that would drive me crazy--but that was with early BIOS.

Accepted Answer

I have the F10 bios and my bios time is 19.6 seconds (checked via task manager). I am using a NVMe ssd boot drive with a SATA ssd and HDD as storage drives.

Also, it says the bios time is 19.6 seconds, but it feels a lot shorter; just my two cents.

Question 5

Can this board run a single GPU in the second PCIe slot at x16 or only at x8?

Accepted Answer

According to my User Guide, as well as the specifications tab here, PCIe slots one and two run at x16.  They drop to x8 when both slots are occupied.  I'm running two RX 580 GPUs in Crossfire mode until I can upgrade to an AIB RX 5700XT when they become available.  My video editing software does take advantage of the 16 GB of GPU processing power.

Question 6

Is the QVL for SSD and M.2 SSD drives current and exclusive?  I want to look at a 2T M.2 SSD, but there are only 2 total 2T SSDs supposedly supported.  I would like to know if the Crosshair VIII Wi-Fi supports WD Blue 3D NAND SATA SSD M.2 2T OR NVMe or other versions of M.2 models.

Accepted Answer

Checking the Asus website, it states the ZP2000GM3A002-2TB (FireCuda 520 SSD) is supported, but I have a mp600 1T, and a Sabrent 1T pcie 4.0 drive in mine. The Sabrent works fine even though there is no stated support. clock speeds are almost identical on both drives, after both firmwares were updated to the latest and greatest.

Question 7

I get a ASUS ROG Crosshair VI Hero AM4 AMD X370 SATA 6Gb/s USB 3.1 ATX AMD Motherboard
if I replave with this motherbors will my ram and pro work and vido card?

Accepted Answer

Yes you'll be fine.  When dealing with amd it's simple. If the socket, in this case "AM4" matches you're good to make the swap. Gets more complicated with Intel and chipsets. But yes your. Cpu, gpu, and RAM should all be fine, just be sure to update to the latest bios.

Question 8

Can you manually set the chipset fan to a quiet mode or custom fan curve through bios/software (or just turn it off completely)? Also, the chipset fan looks like it would be accessible for replacement based on the screws in the picture- can anyone confirm whether it can be accessed?

Accepted Answer

I didn't see an option for the chipset fan in the BIOS, though I may have missed it. That being said, I can't hear the chipset fan when it runs. It cannot be replaced. The screws you're referring to are used to hold a plastic cover in place, not the actual fan.

Question 9

How loud is the chipset fan on the Crosshair VIII Hero?

Accepted Answer

Unnoticeable compared to case fans or a cpu fan.

Question 10

does this mobo have a header to plug in a USB 3.1 cable? I have the Lian Li Lancool ii and it has an optional usb C port that I plan on using if possible. Thanks!

Accepted Answer

USB naming conventions have changed again, but I think the answer to your question is yes. The board has a USB 3.2 Gen 2 and Gen 1 connector - your USB 3.1 cable should plug into the USB 3.2 Gen 2 connector.

Brand	ASUS
Series	ROG
Model	CROSSHAIR VIII HERO (WI-FI)

CPU Socket Type	AM4
CPU Type	BIOS update might require for AMD Zen 3 Ryzen 5000 series CPU. Refer to ASUS website for CPU support list.

Number of Memory Slots	4x288pin (DDR4)
Memory Standard	3rd Gen AMD Ryzen Processors DDR4 4800(O.C.)/ 4600(O.C.)/ 4400(O.C.)/ 4266(O.C.)/ 4133(O.C.)/ 4000(O.C.)/ 3866(O.C.)/ 3733(O.C.)/ 3600(O.C.)/ 3466(O.C.)/ 3400(O.C.)/ 3200/ 3000/ 2933/ 2800/ 2666/ 2400/ 2133 MHz Un-buffered Memory 2nd Gen AMD Ryzen Processors DDR4 3600(O.C.)/ 3466(O.C.)/ 3400(O.C.)/ 3200(O.C.)/ 3000(O.C.)/ 2933/ 2800/ 2666/ 2400/ 2133 MHz Un-buffered Memory 2nd and 1st Gen AMD Ryzen with Radeon Vega Graphics Processors DDR4 3200(O.C.)/ 3000(O.C.)/ 2933/ 2800/ 2666/ 2400/ 2133 MHz Un-buffered Memory
Maximum Memory Supported	128GB
Channel Supported	Dual Channel

PCI Express 4.0 x16	3rd Gen AMD Ryzen Processors 2 x PCIe 4.0 x16 (x16 or dual x8) 2nd Gen AMD Ryzen Processors 2 x PCIe 3.0 x16 (x16 or dual x8) 2nd and 1st Gen AMD Ryzen with Radeon Vega Graphics Processors 1 x PCIe 3.0 x16 (x8 mode) AMD X570 chipset 1 x PCIe 4.0 x16
PCI Express 3.0 x16	1 x PCI Express 3.0 x16
PCI Express x16	None
PCI Express x1	1 x PCIe 4.0 x1

Serial ATA (SATA)	8 x SATA 6Gb/s
M.2	3rd Gen AMD Ryzen Processors: 1 x M.2_1 socket 3, with M Key, Type 2242/2260/2280 (PCIE 4.0 x4 and SATA modes) storage devices support 2nd Gen AMD Ryzen / 2nd and 1st Gen AMD Ryzen with Radeon Vega Graphics Processors: 1 x M.2_1 socket 3, with M key, type 2242/2260/2280 storage devices support (SATA & PCIE 3.0 x4 mode) AMD X570 chipset: 1 x M.2_2 socket 3, with M Key, Type 2242/2260/2280/22110 (PCIE 4.0 x4 and SATA modes) storage devices support
SATA RAID	0/1/10

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ASUS AMD AM4 ROG X570 Crosshair VIII Hero (Wi-Fi) ATX Motherboard with PCIe 4.0, Dual M.2, SATA 6Gb/s, USB3.2 Gen 2, 2.5Gbps LAN, WiFi 6

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Audio Chipset	ROG SupremeFX High Definition Audio CODEC
Audio Channels	8 Channels * Due to limitations in HDA bandwidth, 32-Bit / 192 kHz is not supported for 8-Channel audio.

LAN Chipset	Realtek RTL8125-CG
Second LAN Chipset	Intel I211-AT
Max LAN Speed	2.5Gbps + 1Gbps
Wireless LAN	Supports channel bandwidth: HT20/HT40/HT80/HT160 Intel Wi-Fi 6 AX200 2 x 2 Wi-Fi 6 (802.11 a/b/g/n/ac/ax) with MU-MIMO supports dual frequency band 2.4/5 GHz Up to 2.4 Gbps transfer speed
Bluetooth	Bluetooth 5.0

Back I/O Ports	1 x Optical S/PDIF out 1 x Clear CMOS button(s) 1 x USB BIOS Flashback Button(s) 1 x ASUS Wi-Fi Module 1 x Anti-surge 2.5G LAN (RJ45) port Anti-surge LAN (RJ45) port 5 x Gold-plated audio jacks 4 x USB 3.2 Gen 1 (up to 5Gbps) ports 8 x USB 3.2 Gen 2 (up to 10Gbps) ports
HDMI	1 x HDMI
USB 3.1	4 x USB 3.1
USB 3.0	4 x USB 3.0

Onboard USB	1 x USB 3.2 Gen 2 (up to 10Gbps) connector 1 x USB 3.2 Gen 1 (up to 5Gbps) connector support additional 2 USB ports 2 x USB 2.0 connector(s) support(s) additional 4 USB 2.0 port(s)
Other Connectors	2 x Aura RGB Strip Headers 2 x Addressable Gen 2 header(s) 1 x TPM connector(s) 1 x CPU Fan connector(s) 1 x CPU OPT Fan connector(s) 3 x Chassis Fan connector(s) 1 x AIO_PUMP connector 1 x H_AMP fan connector 1 x W_PUMP+ connector 1 x Front panel audio connector(s) (AAFP) 1 x Slow Mode switch(es) 1 x Reset button(s) 1 x Node Connector(s) 1 x LN2 Mode jumper(s) 1 x Safe Boot button 1 x ReTry button 1 x System panel connector 1 x T_Sensor Connector 1 x W_IN header 1 x W_OUT header 1 x W_FLOW header 1 x Start button 1 x Speaker connector

Form Factor	ATX
LED Lighting	RGB
Dimensions (W x L)	12.0" x 9.6"
Power Pin	1 x 4-pin EATX 12V Power connector 1 x 24-pin EATX Power connector(s) 1 x 8-pin EATX 12V Power connectors

Item#: 9SIC89BM782895