AMD B550 Chipset Specs Detailed

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Hong Kong media HKEPC has reportedly revealed the specifications for the AMD B550 chipset in its review of ASRock's X570 Creator motherboard.

(Image credit: Tom's Hardware)

While the X570 motherboards might have a lot to offer, budget PC builders are waiting for a more accessible option. That's where the B550 chipset comes in. The B550 chipset will have some limitations compared to X570, but will ultimately allow for more budget-friendly boards for people with AMD Ryzen 3000-series CPUs. 

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ChipsetSegmentUSB 3.2 Gen 2USB 2.0SATAUplinkPCIe LanesRAIDDual GPUOC Support
X570Enthusiast844 + 8x4 Gen 48 + 8 Gen 40, 1, 10YesYes
X470 / X370Enthusiast266x4 Gen 38 Gen 20, 1, 10YesYes
B550*Mainstream264 + 4x4 Gen 38 Gen 2 + 4 Gen 30, 1, 10YesYes
B450 / B350Mainstream264x4 Gen 36 Gen 20, 1, 10YesYes

*Specifications are not confirmed

Like previous AMD 300-series chipsets, the B550 chipset is allegedly equipped with two USB 3.2 Gen 2 (10 Gbps) and six USB 2.0 ports. Unfortunately, HKEPC didn't indicate the number of USB 3.1 Gen 1 ports for the B550 chipset. When it comes to storage, the B550 chipset can provide up to eight SATA III ports, which is only four less than what you would find on the high-end X570 chipset. Nevertheless, the B550 chipset offers more storage capacity than the previous flagship X470 chipset, which was limited to only six SATA III ports. As expected, the B550 chipset supports RAID 0, 1 and 10 arrays. It'll also support dual graphics card setups and overclocking.

The X570 chipset employs four high-speed PCIe 4.0 lanes for the uplink to the processor. On the contrary, the B550 chipset looks like it will retain the same configuration as past AMD chipsets, which are four PCIe 3.0 lanes. While we're on the topic of PCIe lanes, the B550 chipset brings a couple of interesting improvements. As we already know, the X570 chipset delivers up to 16 general-purpose PCIe 4.0 lanes for motherboard vendors to distribute among other devices. The B550 chipset seemingly supplies four PCIe 3.0 lanes and eight PCIe 2.0 lanes for the same purpose. This is pretty significant, considering the X470 and X370 chipsets only have eight general-purpose PCIe 2.0 lanes while the B450 and B350 chipsets are restricted to six PCIe 2.0 lanes.

According to a posting from German retailer Alternate, pre-built desktops that employ AMD B550 motherboards could debut as soon as next month. However, a DigiTimes report claimed that motherboard manufacturers will receive their B550 orders in the fourth quarter, which suggests a later release date for AMD B550-based motherboards.

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Zhiye Liu
Zhiye Liu
News Editor and Memory Reviewer

Zhiye Liu is a news editor and memory reviewer at Tom’s Hardware. Although he loves everything that’s hardware, he has a soft spot for CPUs, GPUs, and RAM.

9 Comments Comment from the forums
  • derekullo
    12 sata ports on the x570 and still no raid5/6 support.
    Reply
  • salgado18
    Could have 4 PCIe 4.0 lanes for one M.2 device. As it is, it's not much better than 4xx motherboards.
    Reply
  • TJ Hooker
    salgado18 said:
    Could have 4 PCIe 4.0 lanes for one M.2 device. As it is, it's not much better than 4xx motherboards.
    It's still possible you could have 4x 4.0 lanes straight from the CPU (with a Ryzen 3K CPU) with the chipset. Even if everything in this article is correct we still don't know what speed the direct CPU PCIe lanes will run at on B550 boards.
    Reply
  • Giroro
    What does a x570 chip cost, and how does that compare to B550 and X470?

    I still find it hard to believe the cost of the chipset is the sole cause of the hike in motherboard prices, in some cases by over $100.
    Reply
  • Soaptrail
    i wonder if we will see any B550 boards with 3 M.2 slots.
    Reply
  • Gillerer
    Giroro said:
    What does a x570 chip cost, and how does that compare to B550 and X470?

    I still find it hard to believe the cost of the chipset is the sole cause of the hike in motherboard prices, in some cases by over $100.

    It's not. I believe the main reasons are the much beefier power delivery, and the better traces for both PCIe 4 (potentially with retimers) and faster supported memory. These then require more PCB layers and more engineering.

    Also, since Ryzen is moving up in the world - starting to rival Intel's performance - the motherboard OEMs will feel they don't have to sell with cost or cost/perf only, and may have taken the opportunity to increase their margins.
    Reply
  • hannibal
    Yep. We now have now six layer motherboard and we used to have 4 layers in previous generation, so the 570 motherboard Are much more complicated and so more expensive to produce. Main reason Are those Pci4 lines and higher memory speeds that requires better current regulation and less errors. the chipset itself is not much more expensive in itself.
    Reply
  • salgado18
    Gillerer said:
    It's not. I believe the main reasons are the much beefier power delivery, and the better traces for both PCIe 4 (potentially with retimers) and faster supported memory. These then require more PCB layers and more engineering.

    Also, since Ryzen is moving up in the world - starting to rival Intel's performance - the motherboard OEMs will feel they don't have to sell with cost or cost/perf only, and may have taken the opportunity to increase their margins.
    hannibal said:
    Yep. We now have now six layer motherboard and we used to have 4 layers in previous generation, so the 570 motherboard Are much more complicated and so more expensive to produce. Main reason Are those Pci4 lines and higher memory speeds that requires better current regulation and less errors. the chipset itself is not much more expensive in itself.
    Just to add to the discussion: I recently discovered that the Gigabyte X570 Aorus Elite and lower have 4 layers. It is more expensive than X470s even though the number of layers is probably the same.
    Reply
  • CaedenV
    Curious to see how the PCIe4 plays a role in all of this.
    The 16 lanes for the GPU are on the CPU rather than the chipset, so we could still well see gen4 support for GPUs coming (even if nobody has a use for it yet), while PCIe3 is still more than fast enough of a back-bone for SATA, USB, M.2 etc.
    Reply