Not all motherboards are created equal, and some come with different distinguishing features which amplify them above the others. Whether that be gaming or professional use, the ASUS Pro WS X570-Ace as it stands is the only X570 model which is focused on the professional market with official support for ECC memory, three full-length PCIe 4.0 slots which operate at x16, x8/x8, and is the only current X570 model to operate at x8/x8/x8 across all of its slots, using a full x8 connection from the chipset.


ASUS Pro WS X570-Ace Overview

The ASUS Pro WS X570-Ace is the only X570 motherboard designed and focused around the professional market and as a result, drops all the gaming branding and gaming focused extras. There are no integrated RGB LEDs - instead the ASUS Pro WS X570-Ace focuses on a sleek look with an all-black design and horizontally finned black aluminium heatsinks. Underneath the heatsinks is a 12+2 phase power delivery spearheaded by an ASP1405I controller operating in a 6+2 configuration. ASUS has focused more on transient response and has appropriately opted to team the phases together instead of using doublers. The end result is still a 12-phase design, done in a way to align with the intended workflow of a professional system.

One of the key elements to this board design is the x8/x8/x8 PCIe 4.0 slot layout. This motherboard is the only one on the market that uses a full PCIe 4.0 x8 lane available from the AMD X570 chipset, enabling an array of different use cases that ASUS believes this market needs. Technically the upstream link to the CPU is still limited to PCIe 4.0 x4, however this does enable PCIe 3.0 x8 cards to have full bandwidth, which accounts for a lot of add in cards (RAID, high-end networking).

ASUS Pro WS X570-Ace Block Diagram

One of the major upheavals for AMD on the new 7 nm manufacturing process is in its memory performance. Back in 2017 when the first generation of AMD's AM4 X370 models launched, there was a lot of focus on its memory support and with launch day firmware, a lot of issues arose in the compatibility of memory kits rated above DDR4-3200. Now while X570 is still on the AM4 socket, major advancements have been made with the strength of the IPC onboard the Ryzen 3000 series of processors and as also memory support is much improved. The ASUS Pro WS X570-Ace has four memory slots with support for up to DDR4-4400 and up to 128 GB. A lot of speculation has been made with manufacturers mentioning support for ECC memory, but the ASUS Pro WS X570-Ace has full support for ECC and includes options for scrubbing within the firmware; this comes down to processor support, but the WS X570-Ace is certainly geared for it. 

Looking at the feature set of the ASUS Pro WS X570-Ace, networking is handled by a pair of Gigabit NICs and the onboard audio is controlled by a Realtek ALC1200S with an integrated EMI shield which offers five 3.5 mm audio jacks and S/PDIF optical output on the rear panel, and the front panel audio connector located in the bottom left-hand corner of the board. Looking at the rest of the rear panel inputs, ASUS has gone with four USB 3.1 G2 Type-A, one USB 3.1 G2 Type-C, and two USB 3.1 G1 Type-A ports. Moving onto the storage options on offer and the ASUS Pro WS X570-Ace has plenty to shout about with two PCIe 4.0 M.2 slots (x4/x2), with four SATA ports that support RAID 0, 1, and 10 arrays. 

The overall performance displayed by the ASUS Pro WS X570-Ace is positive in multiple areas of our system, CPU, and gaming test suites. In terms of power consumption, there wasn't too much difference between the long idle and idle power states. The workstation-focused WS X570-Ace did, however, display the lowest power draw at full load over both the MSI MEG X570 Godlike and MEG X570 Ace by around 7 Watts. Testing POST times also threw up some interesting results at default settings with a rather long POST time of 33 seconds; we managed to shrink this by nearly 13 seconds when we turned all the non-vital controllers off including onboard audio and networking; this is over a third of the POST time which shows the ASUS Pro WS X570-Ace to have a little bit of inefficiency when booting into Windows 10.

Moving onto the overclocking performance, and the ASUS Pro WS X570-Ace performed very well all things considered, and although this model isn't aimed at enthusiasts and gamers, it still packs a mighty punch with its 12+2 phase power delivery. The single 8-pin 12 V ATX CPU power input didn't hinder our testing in the slightest and we managed to hit the wall of our Ryzen 7 3700X processor which currently sits at 4.3 GHz at 1.375 V. CPU VCore voltage VDroop wasn't an issue and it was found to be stable at all of the frequencies and CPU VCore settings we set it to. At full load when the processor needed the grunt, the power delivery proved effective in boosting the CPU VCore when it was needed, which in turn not only reduces power consumption but temperatures too. AMD's Precision Boost Overdrive settings also proved fruitful on this model with a respectable gain in performance in our POV-Ray benchmark; the ASUS Pro WS X570-Ace is the first model we've tested so far to show an effective gain with PBO.

The ASUS Pro WS X570-Ace currently sits as the only workstation focused motherboard in the current product stack, and includes a good range of features for consumers and professional users. The X570 chipset isn't specifically designed for workstation situations, and includes features such as ASUS Node, which enables ASUS' partners to develop products with an OLED display (for example, InWin has a case that supports it).

With a current retail price of $380 at Newegg in the US, the ASUS Pro WS X570-Ace stands out from a very crowded gaming-orientated X570 product stack and while omitting features such as RGB LEDs, it is sure to prove popular with consumers who hate the thought of a wild rainbow discotheque startling their vision. The official support with compatible Ryzen 2000 and 3000 Pro for ECC memory also make this an interesting and appealing option to consider.

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  • AntonErtl - Tuesday, August 13, 2019 - link

    Thank you for the review.

    I find the >10% performance differences between the boards on some benchmarks surprising. Do you have any idea what is causing that? Are these benchmarks RAM-bandwidth limited, PCIe-limited, or do the slower boards drive the CPU with more voltage for the same clock rate, resulting in lower clock rate at the power limit? Or something else?
  • mblataric - Tuesday, August 13, 2019 - link

    Since this is workstation oriented, it would be nice to see how it works with Windows Server 2019 perhaps with Ryzen 3900X CPU which os more suited for this board.
    I am looking to build new virtualisation host and I would like to run WS 2019 as on OS, instead of Windows 10 (which just updates way to frequently to be used for my scenario).
  • quantumshadow44 - Tuesday, August 13, 2019 - link

    no default 10GbE = fail
  • zzing123 - Tuesday, August 13, 2019 - link

  • rrinker - Tuesday, August 13, 2019 - link

    Almost was thinking it's time to go back to Asus. No RGB! Hooray! But only 4 SATA ports? Well, so much for that... I'm looking to rebuild my server, M.2 for the OS drive, SATA for my storage drives, but I need way more than 4 ports. Intel NIC is a plus, wish BOTH of them were, instead of one Realtek.
  • CityZ - Tuesday, August 13, 2019 - link

    If you just need lots of SATA ports, but don't need lots of speed, you can use a SATA port multiplier. With 5x multipliers, you could hook up 20 SATA drives. This is good for archive storage drives.
  • rrinker - Wednesday, August 14, 2019 - link

    Needs to be fast enough to stream a couple of 1080 streams, tops. Unless there is an (unlikely) massive drop in large capacity SSD prices in the next couple of months, the bulk with be spinny disk, with a pair of SSDs for fast cache (the storage software I use supports this), and SSD for the OS drive (I'd use the M.2 slots on this MB). Many f the others I've looked at might have 8 SATA ports, but use one M.2 and you lose TWO SATA ports, use the second M.2 and you lose another SATA - so not much better off. Current server as a 2 port SATA PCI card. 10Gbe would be nice but I don;t have a 10Gbe switch, 2 of the same 1Gbe would be fine for basic teaming.
  • StoltHD - Friday, July 10, 2020 - link

    for approx 100USD you can buy a U.2 to M.2 NVME adapter, one U.2 cable and a NVME m.2 to 5 port SATA 3.0 adapter, giving you 5 ports (multiplier) on the U.2 port (Or you can buy a NVME m.2 to 4-port SATA adapter ...

    And if you can also add a NVME to SATA to the second M.2 slot ... thats 10 sata ports.
    I do not know yet of the motherboard sata chip support sata multiplier but if it does, you can add 4 multipliers to those to and get 20 sata ports on thos 4, if you set up a ZFS system correct, you will get near the speed of 4x sata-6 ... or you can use the second (2x pci-e 4) for cache ...

    The second M.2 runs a little over half speed on a pci-e v3 ssd, so it should be usefull for cache ...
  • WatcherCK - Tuesday, August 13, 2019 - link

    Can someone explain how the ECC support for Ryzon Pro works? Do you need a Pro cpu to be able to fully utilize ECC, from what I understand the Pro cpus are more for OEMs to be used in business grade machines...would a standard Ryzen CPU still work?

    With 3 PCIe slots you could do alot with it, NAS or virtualization and for less than what a threadripper system would cost... Just not available in NZ :(
  • zzing123 - Tuesday, August 13, 2019 - link

    No, all Ryzen (except maybe the really low-end/mobile ones) support ECC. The only thing you need to look for is the motherboard and DIMMs.

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