AsRock Rack X570D4I-2T Mini-ITX Server Motherboard AM4 PGA 1331 X570 AMD Ryzen 3rd Generation Series Processors

Pros: With everything going for it, this board is awesome. I paired it with 128GB of ECC DDR4 RAM, a Ryzen 9 3950x, a 1TB NVMe and 2x 2TB SSDs for a monster homelab all-flash vSAN ESXi. Running vanilla 7.0 ESXi with vcenter 7.0 I have no problem loading it.
Rounding up my build is a Fractal Design Core 500 Black case, a 1000W PSU and a Corsair Hydro Series H80i.
IPMI is HTML5 based, very responsive and useful.
There is a video card built in so you can run any Ryzen without having to install an external card.
The board comes with one oculink to 4 sata splitter which can be configured as a SATA or PCIe handoff. Cons: The board takes a non-standard cpu fan, as it needs an INTEL 115x cooler.The underside bracket is non-removable since it is epoxied.
There is no sound card on the board.
Only one NVMe port, and only 2280. Overall Review: For a person who loves mini ITX, this board is nearly perfect. 10G works. CPU screams. ESXi is happy. Time to build another one. 🙂

Pros: – Almost every feature you will need for a server is already on board (IPMI, 2 Oculink 4x, 2 10Gbe Nics)
– ECC Ram official support, however, my B450 mainstream rig can also run ECC Ram
– with a 3900x, 3900XT or a 3950X, your VMs are uniquely able to have a very high frequency and many core count which is something even the epyc platform cannot offer.
– AMD is always insane when it comes to SR-IOV even their cheapest board supports this and here is no different Cons: !!!!!!!!!!!!PSA!!!!!!!!!!!
This board uses an INTEL 115X/1200 mount and the back plate is NOT removable easily but you CAN mount most Noctua cpu cooler by buying the Intel mount and buy some M3X25mm screws!!
!!!!!!!!!!!PSA #2!!!!!!!!!!
They use a 24pin to 4 pin motherboard power and you NEED to have a powersupply that can at least do 40 amps on the +12v to make the motherboard boots! that will leave a lot of lower powered SFX/ Flex ATX power supply out, a 850W power-supply can usually supply 70A on +12V, but a 400W can maybe do 30, the lowest I tested are 500W @ 24A+24A and it boots, a 400W 28A on the +12V fails to boot but IPMI is able to run.
– Cost is a bit high but it is understandable when to do the math (~200 x570 itx board + ~100,150 dual 10GBE + ~100 IPMI + 15 VGA) Overall Review: If you are looking for a ITX server build look no further, this is years ahead of any Intel platforms or supermicro/tyan have to offered. You can used 5 PCIe 4.0 NVME SSD with 2 additional NVME SSD or 8 SATA drives.

Pros: * Can accommodate 128 GB of RAM.
* PCIe 4.0.
* 2× Oculink ports.
* Feature-rich IPMI Web interface.
* 2× 10 Gb ethernet.
* Passively cooled X570 chipset. Cons: * Very picky about memory. Consult the QVL.
* Front panel header connections can impinge on expansion card.
* Just two rear USB ports.
* Only video output is VGA.
* Passively cooled X570 chipset. Overall Review: This is a remarkable little board. The two Oculink ports make clear that it’s intended primarily as a storage solution; but the ability to accommodate 128 GB of RAM along with the 10 Gb ethernet ports also make it a great workstation platform. This is quite possibly the only generally available mini-ITX X570 board with four DIMM slots, accommodating up to 128 GB of RAM (which is exactly the sort of legroom that a 3950X CPU needs on a development workstation).
It is not without its quirks, however…
* This board is extremely picky about memory. If you’re not buying off the QVL, you’re really rolling the dice as to whether the board will even POST.
* The front panel header is at the end of the PCIe slot; and if you install a graphics card with a nontrivial cooler, it will probably smash the connectors. The reference RX 5700 XT I installed was prevented from going quite all the way into the slot; but it went in far enough to make an electrical connection.
* Though this is an AM4 board, it’s designed for use with LGA115x coolers. That in itself is not much of a problem, since there are plenty of coolers that have a wide range of socket compatibility. However, what can present a catch is the fact that this board has a preinstalled (glued on) backplate; and not all LGA115x-compatible coolers will include compatible mounting hardware. (Many supply their own backplate.) While I’ve heard of some folks prying off the backplate to replace it, it’s much simpler (and won’t void your warranty) to acquire four M3 machine screws to screw into the existing backplate. The requisite length will likely vary depending on the particular cooler; but M3×20 screws work well to mount a Noctua NH-D15S.
* The CPU socket is significantly closer to the PCIe slot than it is on most other AM4 boards. If you care to use this slot with something other than a flexible PCIe riser, pay close attention to your CPU cooler dimensions. The Noctua NH-D15S clears the slot, but just barely. The regular NH-D15 would overlap the slot.
* I have listed the “Passively cooled X570 chipset” as both a pro and a con. It’s a “pro” in that you don’t have to worry about a whiny X570 chipset fan. It’s a con in that you will need to make sure this board gets adequate airflow.
* I get that, as a server board, this board would be intended to run headless. However, even in that scenario, there are times when attaching a monitor is just convenient to troubleshoot an issue. VGA connections on monitors have become uncommon. It would be nice if HDMI were provided as well. (Failing that, a VGA-to-HDMI adapter does work; but these require auxilliary power and consume a scarce USB port.)
That’s not a short list of quirks; but, none of them is a showstopper and I think this board still warrants 5 eggs on account of just how exceptional its feature list is among mini-ITX X570 boards. If you want to build a Ryzen workstation with a discrete GPU, 128 MB of RAM, and 10 Gbe, it’s the only game in town for mini-ITX.

Pros: Great board; they really pack a lot into a small form factor! Cons: * Only comes with 1 “JPC P4713SP10600-1” connector for a max of 4 SATA drives; you can find another one online for ~ $10.
* Finding a heatsink is near impossible; however, the LGA115x (NewEgg 9SIBBZAJ6Y6092) matches the holes on the non-removable backplate. and M3 12mm screws (Everbilt “1008004748”) thread nicely into the holes. The plastic mounting posts can be removed from heatsink by prying up the retaining clips, and the difference in diameter between the head of the screw and resulting holes can be fixed with a flat washer(s). I couldn’t find one wide enough at the local hardware store, so I stacked the screw + M3 washer + M4 washer + M5 washer at each corner, which holds better than some factory solutions I’ve used in the past. Overall Review: If you don’t mind minor adjustments / tinkering, it’s a great board.