Question 1

What are those two 8 pin connectors on the top of the board for?  Are those for the video card?  If so can you use those plugs instead of the 8 pin on the physical card?

Accepted Answer

I assume that you're talking about the two small, rectangular 8 pin ports at the edge of the board above the ram slots. These are known as EPS ports and supply power to the motherboard itself along with the main 24 pin cable. They must both be connected to a power supply in order for the motherboard to function. If the graphics card you're using has an 8 pin port on it, it must also be connected to a power supply in order for the card to function.

Question 2

What's a good power supply for this motherboard?  I'm thinking about getting 450w.

Accepted Answer

Add up power rating of each device you plug in to motherboard - CPU, Video,  RAM, Drives, and anything that plugs into it, then add 20% more.  That will begin with enough to operate.  If you plan to operate with more plugin devices in the future,  now is the best time to add power for the future as well.   Why might you be looking at this level motherboard when you don't know enough to figure your power needs?   Man - this is elementary stuff.

Question 3

is it atx full tower?

Accepted Answer

It's listed as a normal ATX board and will fit in an ATX case but I am pretty sure it closer to eATX as it's nearly the same size as my old eATX board.

Question 4

How do the display/Thunderbolt I/O work. Do you need a video card? Will the display ports work by themselves?

Accepted Answer

Yes with DisplayPort out, I'm not sure what version displayport, probably 1.3.  The motherboard comes with short displayport you plug in your video card then to the motherboard, then that routes the video over the thunderbolt, which then operates as a fast USB with video on top, which is supported by newer monitors.  I was curious with the same question prior to getting the motherboard, but there is NO video on the motherboard.  You actually have two displayport IN ports, and two outbound thunderbolt.  I'm not sure if you could bind two displayports out one thunderbolt, but a single displayport can output more than one video signal.  It's all dependant on the resolution vs bandwidth.  Hope this helps.

Question 5

Would it support DDR4-3800 memory even though it's not listed in the specs ?

Accepted Answer

The PRIME X299-DELUXE II Memory QVL   Shows options for 3800   So i guess will.  That said when running  higher clock speeds you can still run into issues sometimes even when they say it will work. I run dominator  platinum 64g 3200  works fine.     good luck.

Question 6

what is the max GB size of ram supported? 
G.SKILL Ripjaws V Series 64GB (2 x 32GB) 288-Pin DDR4 SDRAM DDR4 2666 (PC4 21300) Desktop Memory Model F4-2666C18D-64GVK

Accepted Answer

I have 128GB (8 x 16GB) in mine but it goes through a fail/safe reboot cycle until it gets down to 96GB (6 x 16GB).  Very disappointing.  I wouldn't buy this board again or recommend it to anyone else.

Question 7

If this board ships with a bios earlier than 0802 which began support of i9 10xxxx series, will it post so I can then update the bios?

Accepted Answer

Yes

Question 8

Is it better to plug monitors into video card or the DVI on motherboard?

Accepted Answer

Hello Chris,

If you use a graphics card with this board, the integrated graphics options are automatically disable so you will need to connect the monitors to the graphics card.  But between the two it is always better to use the graphics card for video output (especially if you are gaming or running 3D applications).  Hope this helps!

Newegg Support

Question 9

If this board ships with a bios revision prior to 0210 will I be able to update it with a core i9-9940 processor installed? The 0210 added support for i9-99xx processors.

Accepted Answer

Yes , I have same processor and recently updated Bios. I would suggest a clean install as some things get buggy. Make sure you back up important files to be safe.

Question 10

Does the Prime Deluxe II include the thunderbolt 3 card?  It seems the Prime Deluxe does include thunderbolt?

Accepted Answer

It doesn't need a card.  The Thunderbolt ports are built into the rear IO panel.

Brand	ASUS
Model	Prime X299-Deluxe II

CPU Socket Type	LGA 2066
CPU Type	Intel Core X-Series Processors Family (6-core above) on LGA 2066 Socket* * Refer to www.asus.com for Intel CPU support list.
Supported CPU Technologies	Supports Intel Turbo Boost Max Technology 3.0* * The support of these features depends on the CPU types.

Number of Memory Slots	8x288pin (DDR4)
Memory Standard	DDR4 4266(O.C.)/ 4133(O.C.)/ 4000(O.C.)/ 3600(O.C.)/ 3400(O.C.)/ 3333(O.C.)/ 3300(O.C.)/ 3200(O.C.)/ 3000(O.C.)/ 2800(O.C.)/ 2666 Hyper DIMM support is subject to the physical characteristics of individual CPUs.
Maximum Memory Supported	128GB
Channel Supported	Quad Channel

PCI Express 3.0 x16	44-Lane CPU (18-core, 12-core & 10-core CPU): 3 x PCI Express 3.0/2.0 x16 slots (single@x16, dual@x16/x16, triple@x16/x16/x8 mode) 28-Lane CPU (6-core & 8-core CPU): 2 x PCI Express 3.0/2.0 x16 slots (single@x16, dual@x16/x8 mode) 1 x PCI Express 3.0/2.0 x16 slots (PCIEX16_3 max. at x2 mode)* * PCIEX16_3 shares bandwidth with SATA6G_5 & STATA6G_6 when using 28-lane CPU.
PCI Express x1	2 x PCI Express 3.0/2.0 x1 slots (compatible with PCIe x1 devices)* * PCIEX1_1 shares bandwidth with USB 3.1 Gen 2 front panel connector (U31G2_E1). It is disabled by default. * PCIEX1_2 shares bandwidth with SATA6G_7.

Serial ATA (SATA)	8 x SATA 6.0Gb/s ports* * The SATA6G_7 shares bandwidth with PCIEX1_2. * SATA6G_5 & SATA6G_6 shares bandwidth with PCIEX16_3 when using 28-lane CPU.
M.2	Intel Core X-Series Processors support with Intel Rapid Storage Enterprise Technology: 1 x M.2_3 Socket 3 with M key, type 2242/2260/2280/22110 storage devices support (PCIE 3.0 x4 mode) Intel X299 Chipset with RAID 0, 1, 5, 10 and Intel Rapid Storage Technology support: 1 x M.2_1 Socket 3 with M key, type 2242/2260/2280/22110 storage devices support (both SATA & PCIE 3.0 x4 mode) 1 x M.2_2 Socket 3 with vertical M Key, type 2242/2260/2280/22110 (Support PCIe storage device only)
Intel Optane Ready	Yes

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Audio Chipset	Realtek S1220A
Audio Channels	8 Channels * Due to limitations in HDA bandwidth, 32-Bit / 192 kHz is not supported for 8-Channel audio. 32-Bit / 192 kHz is only available under Windows 10.

LAN Chipset	Aquantia AQC-111C
Second LAN Chipset	Intel I219V
Max LAN Speed	5Gbps + 1Gbps
Wireless LAN	Intel Wireless-AC 9260 2x2 MU-MIMO 802.11 a/b/g/n/ac support dual frequency band 2.4/5 GHz Supports channel bandwidth: HT20/HT40/HT80/HT160
Bluetooth	Bluetooth V5.0

RJ45	1 x Aquantia 5G LAN port (blue) 1 x Intel LAN (RJ45) port (black)
DisplayPort	2 x DisplayPort IN ports for Thunderbolt 3
Thunderbolt Ports	2 x Intel Thunderbolt ports (USB Type-C)
USB 3.1	4 x USB 3.0 Gen 1 ports
USB 1.1/2.0	2 x USB 2.0
S/PDIF Out	1 x Optical
Audio Ports	5 Ports
Antenna Connectors	1 x ASUS Wi-Fi 802.11 a/b/g/n/ac module

Onboard USB	1 x USB 3.1 Gen 2 front panel connector 2 x USB 3.0 Gen 1 connectors support additional 4 USB ports (19-pin) 1 x USB 2.0 connectors support additional 2 USB ports
Other Connectors	1 x 4-pin W_PUMP+ connector 1 x 4-pin AIO_PUMP fan connector 1 x 4-pin CPU Fan connector 1 x 4-pin CPU_OPT fan connector 2 x 4-pin Chassis Fan connectors 1 x 4-pin M.2 Fan connector 1 x 2-pin Thermal sensor header 1 x NODE connector supports FAN Extension Card II 2 x RGB headers 1 x Addressable header 1 x Front panel audio connector (AAFP) 1 x VROC_HW_KEY 1 x System Panel connector (Q-Connector) 1 x 3-pin CPU_OV header 1 x Q_Code 1 x MemOK!_II Switch 1 x Clear CMOS button 1 x BIOS Flashback button 1 x Power-on button 1 x Reset button

Form Factor	ATX
LED Lighting	RGB
Dimensions (W x L)	12.0" x 9.6"
Power Pin	1 x 24-pin EATX Power connector 2 x 8-pin EATX 12V Power connector

Item#: 9SIC80CM2Y0676