ASUS Prime X299-A Review & Specs

Intel® Socket 2066 Core™ X-Series Processors 
* The Intel® Turbo Boost Max Technology 3.0 support depends on the CPU types
* Refer to www.asus.com for CPU support list

Intel® X299

Intel® Core™ X-series Processors (6-core above)
8 x DIMM, Max. 128GB, DDR4 4000(O.C.)/3600(O.C.)/2666/2400/2133 MHz Non-ECC, Un-buffered Memory 
Intel® Core™ X-series Processors (4-core)
4 x DIMM, Max. 64GB, DDR4 4000(O.C.)/3600(O.C.)/2666/2400/2133 MHz Non-ECC, Un-buffered Memory 
* Hyper DIMM support is subject to the physical characteristics of individual CPUs. 
* Refer to www.asus.com for the Memory QVL (Qualified Vendors Lists).

Supports NVIDIA® Quad-GPU SLI™ Technology 
Supports NVIDIA® 3-Way SLI™ Technology 
Supports NVIDIA® 2-Way SLI™ Technology 
Supports AMD Quad-GPU CrossFireX™ Technology 
Supports AMD 3-Way CrossFireX™ Technology

44-Lane CPU-
3 x PCIe 3.0/2.0 x16 (x16, x16/x16, x16/x16/x8) 
2 x PCIe 3.0 x4 (max at x4 mode) *1
1 x PCIe 3.0/2.0 x1 *3
28-Lane CPU-
3 x PCIe 3.0/2.0 x16 (x16, x16/x8, x16/x8/x1) *4
2 x PCIe 3.0 x4 (max at x4 mode) *1
1 x PCIe 3.0/2.0 x1 *3
16-Lane CPU-
3 x PCIe 3.0/2.0 x16 (x16, x8/x8, x8/x8/x1) *4
2 x PCIe 3.0 x4 (max at x4 mode) *1
1 x PCIe 3.0/2.0 x1 *3
1 x PCIe 3.0/2.0 x1 (x1 mode)

Intel® X299 Chipset : 
1 x M.2 x4 Socket 3, with M key, type 2242/2260/2280 storage devices support (SATA & PCIE 3.0 x 4 mode)
1 x M.2 x4 Socket 3, with M key, type 2242/2260/2280/22110 storage devices support (PCIE 3.0 x 4 mode)
8 x SATA 6Gb/s port(s)
Support Raid 0, 1, 5, 10
Supports Intel® Smart Response Technology, Intel Rapid Start Technology
Intel® Optane™ Memory Ready

Intel® I219V, 1 x Gigabit LAN Controller(s), featuring Turbo LAN
ASUS Turbo LAN Utility
ASUS LAN Guard

Realtek® ALC S1220A 8-Channel High Definition Audio CODEC 
- Impedance sense for front and rear headphone outputs
- Internal audio Amplifier to enhance the highest quality sound for headphone and speakers
- Supports : Jack-detection, Multi-streaming, Front Panel Jack-retasking
Audio Feature :
- DTS Connect
- DTS Headphone:X 
- Optical S/PDIF out port(s) at back panel
- Audio Shielding: Ensures precision analog/digital separation and greatly reduced multi-lateral interference
- Dedicated audio PCB layers: Separate layers for left and right channels to guard the quality of the sensitive audio signals
- Premium Japanese-made audio capacitors: Provide warm, natural and immersive sound with exceptional clarity and fidelity
- Unique de-pop circuit: Reduces start-up popping noise to audio outputs
- EMI protection cover to prevent electrical noise to affect the amplifier quality
Separate layer for left and right track, ensuring both sound deliver equal quality

ASMedia® USB 3.1 Gen 2 controller : 
1 x USB 3.1 Gen 2 port(s) (1 at mid-board)
ASMedia® USB 3.1 Gen 2 controller : 
2 x USB 3.1 Gen 2 port(s) (Type-A + USB Type-CTM)
Intel® X299 Chipset : 
8 x USB 3.1 Gen 1 port(s) (4 at back panel, , 4 at mid-board)
Intel® X299 Chipset : 
4 x USB 2.0 port(s) (4 at back panel, , 2 at mid-board)

OC Design - ASUS PRO Clock II Technology
ASUS Dual Intelligent Processors 5-Way Optimization by Dual Intelligent Processors 5 :
- 5-Way Optimization tuning key perfectly consolidates TPU, EPU, DIGI+ VRM, Fan Xpert 4, and Turbo Core App
AURA :
- Aura RGB Strip Headers
- Aura Lighting Effects Synchronization with compatible ASUS ROG devices
ASUS Exclusive Features :
- USB BIOS Flashback
- MemOK!
- AI Suite 3
- Ai Charger 
- Onboard Button : Power
- ASUS UEFI BIOS EZ Mode featuring friendly graphics user interface 
- Turbo LAN
- Crystal Sound 3
File Transfer
- Cloud GO!
- File Transfer
ASUS EZ DIY :
- ASUS EZ Flash 3 
- ASUS USB BIOS Flashback 
- ASUS UEFI BIOS EZ Mode
- Multi-language BIOS
ASUS Q-Design :
- ASUS Q-Shield
- ASUS Q-Code
- ASUS Q-LED (CPU, DRAM, VGA, Boot Device LED, HDD LED)
- ASUS Q-Slot
- ASUS Q-DIMM 
- ASUS Q-Connector
Gaming Aesthetics :
- 3D printing friendly
- AURA-RGB Lighting
M.2 Onboard(The latest transfer technologies with up to 32Gb/s data transfer speeds)

1 x LAN (RJ45) port(s)
2 x USB 3.1 Gen 2 Type-A + USB Type-CTM
4 x USB 3.1 Gen 1 
2 x USB 2.0 (one port can be switched to USB BIOS Flashback) 
1 x Optical S/PDIF out
5 x Audio jack(s)
1 x USB BIOS Flashback Button(s)

1 x AAFP connector
2 x Aura RGB Strip Header
2 x USB 3.1 Gen 1 connector(s) support(s) additional 4 USB 3.1 Gen 1 port(s) 
1 x USB 2.0 connector(s) support(s) additional 2 USB 2.0 port(s)
1 x M.2 Socket 3 with M key, type 2242/2260/2280 storage devices support (SATA & PCIE 3.0 x 4 mode)
1 x M.2 Socket 3 with M key, type 2242/2260/2280/22110 storage devices support (PCIE 3.0 x 4 mode)
8 x SATA 6Gb/s connector(s)
1 x M.2_FAN connector
1 x VROC_HW_Key
1 x CPU Fan connector(s) 
1 x CPU OPT Fan connector(s) 
2 x Chassis Fan connector(s) 
1 x AIO_PUMP connector 
1 x W_PUMP+ connector 
1 x Thunderbolt header(s)
1 x 24-pin EATX Power connector(s)
1 x 8-pin ATX 12V Power connector(s)
1 x 4-pin ATX 12V Power connector(s)
1 x System panel(s) (Q-Connector)
1 x 5-pin EXT_FAN(Extension Fan) connector
1 x MemOK! button(s)
1 x Thermal sensor connector(s)
1 x Power-on button(s)
1 x Clear CMOS jumper(s)
1 x USB 3.1 Gen 2 front panel connector
1 x CPU_OV jumper

User's manual
ASUS Q-Shield
1 x Vertical M.2 bracket set
4 x SATA 6Gb/s cable(s)
1 x M.2 Screw Package
1 x Supporting DVD
1 x SLI HB BRIDGE(2-WAY-M)
1 x Q-Connector

128 Mb Flash ROM, UEFI AMI BIOS, PnP, DMI3.0, WfM2.0, SM BIOS 3.0, ACPI 6.0, Multi-language BIOS, 
ASUS EZ Flash 3, CrashFree BIOS 3, F11 EZ Tuning Wizard, F6 Qfan Control, F3 My Favorites, Last Modified log, F12 PrintScreen and ASUS DRAM SPD (Serial Presence Detect) memory information

WfM 2.0, DMI 3.0, WOL by PME, PXE

Drivers
ASUS Utilities
EZ Update 
Anti-virus software (OEM version)

Windows® 10 64-bit

ATX Form Factor 
12 inch x 9.6 inch ( 30.5 cm x 24.4 cm )

1. PCIEX4_1 max. at x1 mode, PCIEX4_2 max. at x4 mode
2. SATA6G_5/6/7/8 share bandwidth with PCIEX4_2.
3. PCIEX1_1 shares bandwidth with Front USB 3.1 GEN 2
4. PCIEX16_3 share bandwidth with PCIEX4_1 when using x28 or x16 lane CPU