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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  • amb9800 - Saturday, November 30, 2019 - link

    TB3 has not been open sourced. It's been royalty-free from the start, but any TB3 device still needs to be certified by Intel. Thus far the only TB3 devices that exist integrate Intel TB3 controllers, and very few non-Intel platforms have integrated TB3 (basically just a couple of X570 ASRock boards). Reply
  • Chaitanya - Friday, November 29, 2019 - link

    In order to integrate Thuberbolt, Intel needs access to microcode which is why very few boards even on AM4 come with it and even those solutions are iffy at best. Reply
  • eek2121 - Friday, November 29, 2019 - link

    Untrue, TB has been open sourced and will be a part of the USB 4.0 standard. The real answer is likely one I provided earlier: Intel CPUs have dedicated bandwidth for TB3, AMD CPUs hang it off the PCIE bus. Reply
  • amb9800 - Saturday, November 30, 2019 - link

    TB3 being incorporated into USB 4.0 definitely does not mean it has been "open sourced." Every TB3 device must still be certified by Intel. Reply
  • ender8282 - Saturday, November 30, 2019 - link

    I love the TB3 port on my laptop and docking station. It's way convenient. Honestly though I've never understood the use case on a desktop. If you've got an ATX motherboard and a decent sized case what need does it really solve? Reply
  • TechKnowbabble - Friday, December 20, 2019 - link

    According to this video the GIGABYTE TRX40 AORUS XTREME has a Thunderbolt 3 header called THB_C, but on the site the only mention to this i can find is a "GIGABYTE add-in card connector" which the AORUS Master and Wifi Pro have mention of also. I dont know why it is listed differently from the Designare or not mentioned in this article but it appears that all the Gigabyte TRX40 boards support thunderbolt 3 with add in card.
  • NelsonK - Saturday, January 18, 2020 - link

    It might as well be -BetaMax-. Thunderbolt is Intel's baby, and you gotta dance to their tune to get the engineering specs -- Intel doesn't publish 'em. Only well-resourced (i.e., volume) manufacturers can feasibly spend to design and incorporate it, then produce to a scale that justifies the investment. Sure, that's not precisely a licensing fee, but it's one heckuva barrier to entry.

    These firms can all afford it, but, since VHS (USB) is good enough, why bother? USB "3.2" is pretty darn close and even uses the same Type-C port. In fact, you can even play your VHS tapes on this BetaMax -- USB devices will run at their native speeds when connected to Thunderbolt.

    And with USB 4, there will be no difference in speed. Is there even a practical difference in speed now? Do ya really need more than 10 Gbps? A few of you might, but not enough to pay the piper.

    This is a no-brainer for the board makers: USB 3.1 Gen 2 ("3.2") Type-C offers a lot more speed than most devices can hope to keep up with internally. In the instances where somebody wants to daisy-chain video, they're either mining (which just needs the chain, not so much the speed), or they're using a laptop and don't have space for a video card. Well, these are mainboards, folks. You've got a bunch of fat-pipe PCIe 4.0 16-lane slots that your graphics cards won't even make full use of 99.99% of the time they're running, as they throttle down to 2.0 or 1.0.

    BetaMax was better, but it died even before S-VHS was a real thing. ThunderBolt just got similarly voted down (massively) by pretty much all of big name manufacturers users trust enough and -might- have paid extra to get a board that has it.

    Looks like we're goin' with VHS once again, boys and girls... ;-)
  • wilsonkf - Thursday, November 28, 2019 - link

    Check your last page. Do you really mean "ASUS X570" Product Stack? Also other brands... Reply
  • gavbon - Thursday, November 28, 2019 - link

    Good spot Wilson, I really appreciate it. I've been neck-deep in X570, I must have been in AM4 mode! Reply
  • tamalero - Thursday, November 28, 2019 - link

    hey Anana, any chance you could build a full comparison table between number of ports, pci-e slots, wifi, ethernet..etc..? Reply

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