ASRock B550 Taichi Conundrum

When it comes to quantifying the price to performance ratio of AMD's B550 chipset, one must appreciate what vendors have tried to do with the opportunity B550 has presented. One thing a lot of vendors have accomplished is upgrading from standard Gigabit Ethernet to more future proof 2.5 GbE Ethernet, which is something a lot of manufacturers only implemented on its more mid-range to premium X570 models. This in itself has posed furor among users that expected B550 to slot in below X570 in regards to performance, and despite offering limited PCIe 4.0 support from the Ryzen 3000 processors, vendors have instead chosen to implement premium controller sets which have kept its B550 models higher in price than one would initially expect.

The ASRock B550 Taichi has plenty of PCIe options available, with two full-length PCIe 4.0 slots operating in x16 or x8/x8 mode - the B550 Taichi is one of only three B550 boards to do this. The board's storage includes a top-mounted PCIe 4.0 x4 M.2 slot, which is perfect for users looking to benefit from the performance of a super-fast PCIe 4.0 x4 NVMe drive, while the second slot operates at PCIe 3.0 x4. Both of the M.2 slots have individual heatsinks which blend into the board's bronze and black aesthetics. The B550 Taichi is also the only B550 model to include eight SATA ports, with four driven by the chipset and offering support for RAID 0, 1, and 10 arrays, while the other four ports are delivered via an ASMedia ASM1061 SATA controller.

Other prominent features of the B550 Taichi include a solid networking array including an Intel I225-V 2.5 GbE Ethernet controller and an equally premium Intel AX201 Wi-Fi 6 interface with added compatibility for BT 5.1 devices. Memory support is also impressive with speeds of up to DDR4-5000 supported, with a maximum capacity of up to 128 GB across four memory slots.

In our performance testing, the ASRock B550 Taichi displayed solid results in our power consumption testing, with the lack of PCIe 4.0 lanes within the chipset likely to make a difference when compared to X570 models. The Taichi also performed competitively in our out of the box DPC latency testing, as well as in our non-UEFI system POST time test. In regards to CPU and gaming performance, the Taichi was again competitive with other AM4 models on test.

With our Ryzen 7 3700X processor, the Taichi managed a maximum stable overclock of 4.3 GHz, which is equal to any AM4 board we have tested so far, with tight VDroop control and a consistent performance increase in POV-Ray. Our VRM thermal testing performance also puts the Taichi in a good light, with a reading of 55°C from the integrated thermal sensor, which is very impressive when compared to some of the higher-end X570 models we have tested so far.

The ASRock B550 Taichi Versus X570 Taichi

Both the ASRock B550 Taichi ($300) and the X570 Taichi ($300) share the same price point within the market, which poses some pros and cons when compared directly against each other. The B550 Taichi includes better networking support with a 2.5 GbE Ethernet controller and an Intel AX201 Wi-Fi 6 interface, whereas the X570 Taichi uses Intel's I211-AT Gigabit and the slightly older Intel AX200, although it still conforms to Wi-Fi 6 spec. The obvious pitfall for the B550 version is the lack of PCIe 4.0 support from the chipset, which puts the X570 Taichi on a better footing overall with three PCIe 4.0 x4 M.2 slots versus just the B550 variant. 

 

One argument for the X570 Taichi is that users could use one of the PCIe slots and add a better quality NIC to the board such as an Aquantia AQC107 10 GbE controller and reap the future-proofing benefits of the X570 chipset. Both models have the capability to support the next generation of AMD Ryzen 4000 processors including the highly anticipated Ryzen 4000 APUs, which would make more sense for users to opt for one of the newer and more wallet-friendly A520 models.

 

The B550 Taichi is a solid representation of a good all-rounder from ASRock, but we can't help think adopting the same price point as its higher-end X570 model to be somewhat bewildering. Sure, it has a solid premium feature set and has much of the capabilities of the X570 Taichi, but if we had to spend $300 on a new AM4 based ASRock motherboard, we would lean more towards the X570 Taichi for all the above reasons; better PCIe 4.0 support for the future, as well as an extra PCIe 4.0 x4 M.2 slot which makes it a sweeter deal overall.

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  • Gigaplex - Saturday, August 22, 2020 - link

    I just bought a B550 motherboard. It was 30% cheaper and had features that the X570 version didn't have (eg 2.5Gbit ethernet, better accoustics due to lack of a chipset fan).
  • WaltC - Saturday, August 22, 2020 - link

    $360 x570 Aorus Master is a far better buy. BTW, I've never heard the chipset fan even once. Got a lot more features than this B550 mboard. Had my x570 AM over a year and its doing great--and I still haven't seen anything better on the market--other than the Xtreme--which for me would be overkill and cost 2x as much.
  • kkilobyte - Sunday, August 23, 2020 - link

    Except when the Aorus Master suddenly refuses to boot, requiring you to remove the CMOS battery to revive it. Which is something that happens a bit too often - and Gigabyte still unable to solve the issue.
  • Showtime - Monday, August 24, 2020 - link

    When going AMD, they get you on the motherboards. You also need more expensive ram to maximize performance. I was interested in AMD this round, but the Intel non k chips give the same,or better gaming performance, and actually come out to the same or less depending on motherboard, and ram. $200+ b series mobo's are just bad investments IMO.
  • yannigr2 - Friday, August 21, 2020 - link

    Would you please check something about B550 X570 boards?

    Here the Taichi has the option to drive both top PCIe x16 slots from the CPU. IF I am not mistaken.

    On the other hand the majority of B550 AND X570 boards seems to connect only the first PCIe x16 slot on the CPU and EVERYTHING ELSE on the chipset. Even if they have 2 or 3 PCIe x16 slots. That means that in many cases ports get disabled when other ports are populated.
  • hetzbh - Friday, August 21, 2020 - link

    No AM4 based can drive 2 PCIe X16 from the CPU (I wish..) since the Ryzen 2xxx/3xxx has 24 PCIe lanes out from the CPU. 4 goes to the chipset, 4 goes to NVME M.2, and the last 16 goes to the first PCIe slot and can be shared (X8/X8) between 2 slots, but no X16/X16.
  • yannigr2 - Friday, August 21, 2020 - link

    I wasn't talking about driving two PCIe x16 ports. I was talking about splitting those 16 lanes to a typical x8 / x8 configuration.

    While this was the obvious case in most AM3 motherboards for example, in many cases, even with x570 boards with two or three PCIe X16 slots, only the first slot is connected to the CPU. The second (and third is their is one) PCIe x16 together with the couple x1 ports are connected in the Chipset. So you read. If you connected something in the second M2, you lose that PCIe slot. If you connect something in that PCIe slot, you lose the other PCIe slot and etc.
  • yannigr2 - Friday, August 21, 2020 - link

    One example of a 570 that does this

    ASUS PRIME-X570-P
    https://www.asus.com/Motherboards/PRIME-X570-P/spe...

    1 x PCIe 4.0 x16 (x16 mode)

    AMD X570 chipset
    1 x PCIe 4.0 x16 (max at x4 mode)
    3 x PCIe 4.0 x1

    So, form the two PCIe x16, only the first is connected to the CPU. The second is connected on the chipset.

    You have a microATX motherboard disguised as a full ATX.
  • Hyoyeon - Friday, August 21, 2020 - link

    In order to bifurcate the x16, boards need some logic to mux/demux the lanes. Switching up to nearly 32 GB/s of traffic is quite hard, and so the IC's are surprisingly expensive (especially when you get into the really fast things like PCIe 5/6).
  • eddman - Saturday, August 22, 2020 - link

    That information can be gathered from the product's page on their website. The following is from this board's page:

    "single at Gen4x16 (PCIE1)
    dual at Gen4x8 (PCIE1) / Gen4x8 (PCIE3)
    triple at Gen4x8 (PCIE1) / Gen4x8 (PCIE3) / Gen3x4 (PCIE5)"

    They don't specifically mention exactly which slot is connected to what, but from the above info it's apparent that the first two x16 slots are connected to the processor, because the lanes are split when two cards are inserted. The third slot is obviously connected to the chipset.

    The Asus example you posted below clearly states the second slot is connected to the chipset.

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