Board Features

The mid-range Taichi is going to make a name for itself by being a jack of all trades and mastering none. The board carries over its 8 Layer PCB using four 2oz copper inner layers to help stabilize power. The improved efficiency, ASRock says, which comes from such a setup is lower temperatures, as well as having a higher memory speed support of DDR4 4400+(OC). Most boards top out at 4133 or even less. As with the Professional Gaming i9 the 3-Way SLI and Crossfire capabilities are still there along with the included 802.11ac WiFi, Bluetooth 4.2, and use of the Realtek ALC1220 codec. Instead of using the Creative Sound Blaster Cinema 3 for audio control, it uses Purity Sound 4 with DTS connect. 

ASRock Fatal1ty X299 Professional Gaming i9
Warranty Period 3 Years
Product Page Link
Price Amazon US
Size ATX
CPU Interface LGA2066
Chipset Intel X299
Memory Slots (DDR4) Eight DDR4
Supporting 128GB
Quad Channel
Up to 4400 MHz
Network Connectivity 1 x Aquantia AQC107 10 Gigabit LAN
1 x Intel I219V GbE
1 x Intel I211AT GbE
1 x 2T2R Intel 802.11ac w/BT4.2 (Intel 3165)
Onboard Audio Realtek ALC1220
PCIe Slots for Graphics (from CPU) 4 x PCIe 3.0
44 Lane CPU
 - x16,
 - x16/x16,
 - x8/x16/x8,
 - x16/x8/x16/x0 or x8/x8/x16/x8
28 Lane - x16, x16/x8, x8/x8/x8
16 Lane - x16, x8/x4
PCIe Slots for Other (from PCH) 1 x PCIe 3.0 x1
Onboard SATA Eight via chipset, RAID 0/1/5/10
Two via ASMedia ASM1061
Onboard SATA Express None
Onboard M.2 3 x PCIe 3.0 x4 (SATA Supported)
Onboard U.2 None
USB 3.1 1 x Type-A
1 x Type-C
1 x Front Panel Type-C
ASMedia ASM3142 Controller
USB 3.0 4 x Rear Panel
2 x via headers (ASM1074 Hub)
USB 2.0 2 x Rear Panel
2 x via headers (Chipset)
Power Connectors 1 x 24-pin ATX
1 x 8-pin CPU
Fan Headers 1 x CPU (4-pin)
1 x CPU Opt/Water Pump 1.5A Max (4-pin)
1 x Chassis Opt/Water Pump 1.5A Max (4-pin)
4 x Chassis (4-pin)
IO Panel 2 x Antenna Ports
1 x PS/2 Mouse/Keyboard Port
1 x Optical SPDIF Out Port
2 x USB 2.0 Ports
1 x USB 3.1 Type-A Port (10 Gb/s)
1 x USB 3.1 Type-C Port (10 Gb/s) 
4 x USB 3.0 Ports
2 x GbE RJ-45 Ports
1 x 10GbE RJ-45 Port
1 x BIOS Flashback Switch
1 x Clear CMOS Switch
HD Audio Jacks

Curiously, for a motherboard which has "gaming" in the title and having three network ports, we were surprised not to see a Killer Network based NIC which finds its way on to several other gaming motherboards. Network traffic shaping is still possible through software, although Rivet Networks would likely claim they offer an optimized solution if their chip had been used. Perhaps a combination of an Intel GbE, Rivet Networks Killer E2500 GbE, and an Aquantia 10GbE which would have encompassed more of its tarket market. 

In The Box

We get the following:

  • Quick Installation Guide, Support CD (drivers, Utilities, AV Software, etc), I/O Shield
  • 4 x SATA Data Cables
  • 1 x ASRock SLI_HB_Bridge_2S Card
  • 1 x ASRock 3-Way SLI-2S1S Bridge Card
  • 2 x ASRock WiFi 2.4/5 GHz Antennas
  • 3 x Screws for Ultra M.2 Sockets

ASRock has included what a user needs to get going in the box, but not much more. Items such as four SATA cables to connect any SATA based devices, a couple of SLI bridge cards – a SLI HB bridge for two cards, and a 3-Way SLI bridge card as well are included. Customers also receive two antennas to connect with their integrated Wi-Fi solution for better reception. Last but not least, three screws for the M.2 Sockets. Again, this is arguably just the basics, likely to help reduce costs - we have seen other gaming focused products provide 'gaming' brand additions. It would be interesting to see what the overall user response to some of these add-ins would be.

Visual Inspection

ASRock used a jet black PCB with some light gray ‘racing stripes’ printed on it where the three Ultra M.2 slots reside. Surprisingly the only RGB LED on this board sits under the PCH heatsink. With the board being black outside of the PCIe Steel Slots, it should fit into most build themes fairly easily. If users want to add some flare, they are able to do so by adjusting the included ASRock RGB LED software or use one or both of the onboard RGB headers with the appropriate RGB strip (5050 RGB LED – max. power rating of 3A(12V) and shorter than 2M according to the manual).

For CPU cooling, the two CPU fan headers are located on the top of the board to the right of the 8-pin power, flanking the DIMM slots, Another is found on the inside of the DIMM slots below the socket (a curious location for wire management), followed by two more on the bottom right-hand side by the debug area. The CPU fan connector can output a maximum of 1A (12W) while the CPU and Chassis Optional/Water Pump headers can both deliver 1.5A (18W). All fan headers can auto detect if they are 3-pin or 4-pin and adjust control methods as needed.

The socket area is fairly clean with a few of the Nichicon 12K capacitors flanking the sides and bottom. Towards the top of the socket lay the majority of these caps as this is where the 13-phase power delivery section makes its home. The power delivery heatsink extends out just a bit past where the chokes and MOSFETs reside, but should not get in the way of Heatsinks as it barely stands taller than the single-sided ram latches. At the heart of the VRMs are three Intersil ISL69138 digital PWMs (supporting up to 6+1 each, with phase doublers on the backside). These are paired with 60A Intersil DrMOS, an ISL99227B and ISL 99227F, both of which are smart power stages offering internal temperature and current sensing. This is said to allow operations at higher efficiency levels due to the quicker and more accurate internal feedback loops. The power delivery subsystem is almost the same for the X299 Taichi and X299 Gaming i9, but one difference is the latter uses upgraded and Fairchild FDPC5030SG for the memory MOSFETs. At the top of the board above the VRM heatsink is where the CPU 8-pin power connector sits, just slightly off center on the right side. We are used to seeing these to the left of center, but I doubt it will make reaching it more difficult depending on where your holes are in the case for routing. 

To the right of the DRAM slots, towards the middle of the board, is where we find the 24-pin ATX power connector. Also in that area are the two ASMedia ASM1074 controlled USB 3.0 headers, totaling four USB 3.0 ports between them. Nestled in among those ports sits the front panel Type-C USB 3.1 (10Gbps) header driven by an ASMedia ASM3142 controller. Under the small heatsink just above the first PCIe slot and below the left set of DRAM slots is where the Aquantia 10 gigabit Ethernet controller hides. The Aquantia 10 Gbps LAN port will also step down to 5GbE, 2.5GbE, and 1GbE as required. With internet speeds getting faster and faster (I have 1Gbps service in my area – sadly not at my house) we are likely to start seeing these pop up more frequently, particularly on workstation oriented boards where more use models are found for such fast speeds. We hope and expect to see this feature pop up on other boards down the product stack. 

The board has a total of four full length x16 PCIe slots (labeled as PCIe1,2,3, and 5 from top to bottom) along with one PCIe 2.0 x1 slot (PCIe4). All four full length slots are covered by ASRock’s Steel Slot said to offer more structural support and EMI protection. The first, third, and fith PCIe slots are used for multi-gpu setups sourcing its lanes from the CPU. This orientation allows for a double or triple wide cooler to fit and still allow for using the optimal PCIe slot spacing. With a 44 Lane CPU, that breaks down to x16/x16 for dual cards and x8/x16/x8 with x4 still going to the first M.2 slot (a constant no matter how many GPUs used, note).The second full-length PCIe slot, also from the CPU, is wired for 8x and will run at x8 with a 44 lane CPU. It can be used for PCIe add-in cards such as more PCIe M.2 storage, RAID, ethernet, etc. The board also has a 1x PCIe slot fed from the PCH. 

To the left of the PCIe slots is where we will find the audio. The Fatali1ty X299 Professional Gaming i9 uses the latest Realtek ALC1220 codec, supported by the Sound Blaster Cinema 3 software. ASRock uses Nichicon Fine Gold Series Audio Caps and a TI NE5532 Premium Headset Amplifier for the front panel, supporting auto-detection for up to 600 Ohm headphones.


The I/O area is standard fare. There is the assortment of USB ports ranging from USB 2.0 to USB 3.1 (10Gbps) Type-A and Type-C. The BIOS flashback USB port is found directly above the PS/2 port. We see a standard audio stack with Optical SPDIF. Owners will even find a legacy combination PS/2 port, the Intel Wi-Fi module, Aquantia 10 Gigabit LAN (red), and the dual Intel Gigabit LAN ports. Rounding out the I/O section are the BIOS flashback button (for a CPU/RAMless BIOS flash), and reset CMOS buttons.

Looking at the SATA ports, ASRock places all 10 SATA ports next to each other. Eight of the ports run natively off the chipset, while the other two are supported by an ASMedia ASM1061 controller. The M.2 slots support both PCIe 3.0 x4 and SATA drives, but when using SATA based M.2 drives, the slots share bandwidth and disable some of the SATA ports. For example:

  • M2_1 is occupied by a SATA-type M.2 device, SATA 3_1 will be disabled.
  • M2_2 is occupied by a SATA-type M.2 device, SATA 3_0 will be disabled.
  • M2_3 is occupied by a SATA-type M.2 device, SATA 3_7 will be disabled.

For M.2 PCIe storage, one of the boards is supported directly through the CPU, offering a lower latency option rather than moving through chipset. This means that RAID-0 support will straddle both the CPU and chipset PCIe lanes, and should lead to better throughput than other boards that focus purely on M.2 slots via the chipset. In total, users can have up to 12 storage drives on the board. Of the three M.2 slots, the second M.2 (middle slot) is capable of supporting devices up to 110 mm in length while the other two, the top and bottom M.2 slots, hold up to 80 mm devices.


ASRock X299 Professional Gaming i9 Overview BIOS and Software
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  • ddriver - Tuesday, September 26, 2017 - link

    Does it support intel's latest and greatest dual core i3 HEDT cpu? If not - no buy.
  • duploxxx - Tuesday, September 26, 2017 - link

    why test on a stupid 7900X cpu?
  • duploxxx - Tuesday, September 26, 2017 - link

    bring the 16-18 core and show how the dual memory controller is handling the games, after all this is a gaming board ....
  • ddriver - Tuesday, September 26, 2017 - link

    Yeah, and don't forget the games that scale up to 16-18 cores.
  • JeffFlanagan - Tuesday, September 26, 2017 - link

    For some reason, people feel the need to stream their games on the Internet, so that only leaves 15-17 cores for the game to use.

    It seems like an i5 is still a much better value for a gaming machine since most games use very few cores.
  • duploxxx - Wednesday, September 27, 2017 - link

    the reason i ask is because threadripper reviews all over the net were hammered with the poor gaming benchies en the reason for specifc settings. guess what, no gaming benchies on the HCC designs from Intel that have the same memory disadvantage.
  • OhWhateverOnceMore - Tuesday, September 26, 2017 - link

    "i9" ...ok...
    "Professional" ... uh uh...
    "Gaming" ... /r/hmmm
  • TEAMSWITCHER - Tuesday, September 26, 2017 - link

    Is there an Intel co-marketing kick-back for having a "Gaming" branding? You see it everywhere...
  • oRAirwolf - Tuesday, September 26, 2017 - link

    "Curiously, for a motherboard which has "gaming" in the title and having three network ports, we were surprised not to see a Killer Network based NIC which finds its way on to several other gaming motherboards. Network traffic shaping is still possible through software, although Rivet Networks would likely claim they offer an optimized solution if their chip had been used. Perhaps a combination of an Intel GbE, Rivet Networks Killer E2500 GbE, and an Aquantia 10GbE which would have encompassed more of its tarket market."

    Wutness? Why on Earth would you want to see Killer on a gaming board? ASUS has shown through their own testing that Killer NIC's are trash:

    That aforementioned paragraph seriously makes me question the legitimacy of reviews on this site now. It is common knowledge that Killer is absolute and utter trash.
  • BrokenCrayons - Tuesday, September 26, 2017 - link

    Oh you beat me to the point here. This is one of very rare times when I'd agree that there appears to be a certain amount of institutional bias at Anandtech in favor of Killer NICs. If you do a search for the string "Rivet Networks" in AT's search box you can find this article from September 2016:

    It looks like that was sort of ground zero for that opinion and it's stuck since. In the comments of that article (disclosure - I was a participant with cynical views of Killer NICs even back then for reasons I make clear in those comments) there was discussion about reviewing and analyzing the E2500. Anandtech has never presented such a review or supplied readers with any data supporting the idea that Killer NICs are somehow superior or worthy of being sought out by consumers. Despite lacking reliable test data, there's still unexplained support in the form of hint-dropped lines like the one you've quoted that imply a certain subset of readers should be seeking out Killer NIC-equipped products or that its somehow unusual that a premium motherboard omits them.

    I find the whole thing does hurt Anandtech's credibility. If there's data that supports a Killer NIC being a better option, gather it and publish it. Don't assert and insinuate without any substantially supportive information to a group of people (gamers in this case) without being able to back up those claims. Killer NICs can be acquired for testing. Maybe Rivet's people would supply a product for testing. If Rivet doesn't or does and Anandtech doesn't test it, then what else do we have to go on? Consumers in the target audience are already broadly suspicious of the benefits Rivet claims Killer NICs offer to the point where it seems almost delusional to boost them in a motherboard review.

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