ASUS Prime TRX40-Pro

The last of the three TRX40 models from ASUS is the ASUS Prime TRX40-Pro. Part of its Prime series, it blends its usual white and silver aesthetic, with a more professional styling and straight-edge looks. The ATX sized PCB has plenty of features including three full-length PCIe 4.0 x16 slots, three PCIe 4.0 x4 M.2 slots, and eight SATA ports. The Prime TRX40-Pro sits towards the bottom of its TRX40 product stack offering users the basics while remaining competitive with other TRX40 models.

Focusing on the design of the ASUS Prime TRX40-Pro, its main design consists of a silver and white color scheme, with a rear panel cover doubling up as a power delivery heatsink, and a M.2 heatsink which amalgamates into the design of the chipset heatsink. The board has three PCIe 4.0 x4 M.2 slots with two of these sitting underneath a large silver aluminium heatsink, with the other M.2 slot installed vertically; an adapter comes in the accessories bundle. This also includes eight SATA ports with support for RAID 0, 1 and 10 arrays. On the PCIe front, there are three full-length PCIe 4.0 x16 slots, with a smaller PCIe 4.0 x4 slot located at the bottom. Directly below the PCIe 4.0 x4 slot is a power button, and a two-digit LED debugger. Next to this is a 

As with the vast majority of TRX40 boards at launch, the ASUS Prime TRX40-Pro has support for DDR4-4666 and 256 GB of system memory across eight slots. The CPU power delivery looks impressive for a non-enthusiast model with a 16-phase design which is controlled by an undesignated controller. We know that ASUS using teamed power stages as they did with its X570 product stack. Delivering power to the CPU is a pair of 8-pin 12 V ATX CPU power connectors, with one located at either side at the top of the board. For cooling, the ASUS Prime TRX40-Pro has seven 4-pin headers which include two for CPU fans, three for chassis fans, one for an AIO pump, and another for a water pump.

The rear panel includes three USB 3.1 G2 Type-A, one USB 3.1 G2 Type-C, and six USB 3.1 G1 Type-A ports. A handily located BIOS Flashback button sits towards the left-hand side, while on the right-hand side are five color-coded 3.5 mm audio jacks and S/PDIF optical output controlled by a Realtek ALC S1220 HD audio codec. The single networking port is controlled by an Intel I211-AT Gigabit Ethernet controller.

Although the ASUS Prime TRX40-Pro omits things like Wi-Fi 6 and uprated 2.5/5/10 GbE ethernet, it still comes with an MSRP of $450. While it may seem a little off the mark in terms of pricing, the Prime TRX40-Pro has a very subtle and professional design, with a competitive feature set, and plenty of storage support for users building a workstation using the AMD Threadripper 3000 series processors.

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  • Bccc1 - Friday, November 29, 2019 - link

    My case fans are Noctua NF-S12A running at max 500rpm. CPU and GPU are watercooled with an external pump and radiator sitting a few meters away with acoustic isolation. So I'm pretty sure I would hear the chipset fans.
    I was expecting to shell out ~$1000 for a completly passive Gigabyte board, or even more if it had a PEX chip to use even more PCIe cards, and am very dissapointed that that doesn't exist. Any suggestions for a DIY mod?
  • eek2121 - Friday, November 29, 2019 - link

    You are nuts if you think a tiny little low RPM chipset fan is bad. Chipset fans are inevitable (though a die shrink may temporarily make this go away until PCIE5), and the fact is, the fan on your PSU, GPU, or case fans, even at low levels, will drown out any noise from a chipset fan. Even if the PSU fan is off and you have water cooling, the case fans, at even 400 rpm, make more noise than the chipset fan. Note that it's not currently possible to have every fan in a system shut off on high end platforms, except the chipset fan itself might shut off. Even with an AIO, there must be some airflow for the radiator. Reply
  • Sivar - Monday, December 2, 2019 - link

    It's really more a matter of long-term reliability based on my past experience.
    If a 120mm CPU fan starts to die, get loud, burns out due to dust, or otherwise becomes damaged, it isn't an issue to replace it even 5 years from now. With a proprietary motherboard CPU/heatsink, we are at the mercy of the vendor's long-term support.
  • realbabilu - Friday, November 29, 2019 - link

    Any motherboard s TRX with ipmi? I mean it would be a workstation or a server, a nice ipmi remote will be nice. Reply
  • msroadkill612 - Friday, November 29, 2019 - link

    "the TRX40 chipset, and offers 24 PCIe 4.0 lanes to the system. That being said, eight of those are used for the CPU-to-chipset connection, leaving 16 for ports and other devices. This is on top of the 64 PCIe 4.0 lanes for the CPU: 64 + 24 = 88 PCIe 4.0 lanes total, but the x8 link in each direction between CPU and chipset gives a usable 72 PCIe 4.0 lanes for the platform."



    The chipset uses 8 of the 64 lanes to create (multiplex?) 24x lanes - 8 of which are used for chipset usb & sata ports, leaving 16 lanes for various configurations of additional IO, at the discretion of the mobo maker.
  • sailorchou - Friday, November 29, 2019 - link

    As I know, some boards have the type-c USB Gen3.2 x2 (20Gbps aggregation). Totally ignored? Reply
  • HJay - Friday, November 29, 2019 - link

    The last thing an audio creator wants is some McGyvered / red-necked USB bridge hack-job of a motherboard. In this regard, the S1220 codec models are the only ones having my attention -the ASUS TRX40-Pro in particular since any Real content creator is going to stick their nose up at Wi-Fi. Does it have a secondary codec though? Thank you very much for the timely post which will, hopefully, prompt much discussion regarding the audio peculiarities. Reply
  • HJay - Friday, November 29, 2019 - link

    I suppose audio creators will want to pay close attention to which socket is better suited to their work: AM4 or TR. Reply
  • Bccc1 - Friday, November 29, 2019 - link

    Can you explain further? Why would an audio creator pay attention to the onboard audio if he will use his own audio interface? Even if it's only a cheap Focusrite Scarlett, why does the S1220 matter? Reply
  • Llawehtdliub - Saturday, November 30, 2019 - link

    Because he's young and ignorant but highly opinionated. Reply

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