AMD has officially lifted the lid on its latest entry-level chipset designed for its Zen 2-based Ryzen 3000 and 4000 processors, the A520 chipset. Following AMD's mid-tier B550 chipset launch a few months back, A520 brings up the bottom of AMD's now fully-modernized chipset stack, dialing down on things like PCIe speeds to allow its board partners to build more budget-friendly Ryzen 3000/4000 motherboards.

Overall, A520 offers up to twenty-six available PCIe 3.0 lanes available when paired with a Ryzen 3000 processor, with twenty of these coming directly from the CPU. And, wasting no time, numerous vendors, including ASUS, ASRock, GIGABYTE, MSI, and Biostar have already unveiled some of their entry-level A520 boards.

A520 Chipset, The A-Team For Value

The Zen 2 architecture, which is the foundation of AMD's latest Ryzen series of processors, has been its most popular series of processors to date. One of the marquee features of the B550 and X570 chipsets is PCIe 4.0, which, although it hasn't been fully utilized in devices like video cards and storage at present, it is still a popular feature that users hope will future-proof their systems for years to come. The A520 chipset, in turn, drops support for PCIe 4.0 speeds entirely in favor of PCIe 3.0, which is relatively easier to wire for and gives extra scope for the motherboard vendors to save costs compared to B550 and X570. The chipset officially represents AMD's now current-generation entry-level pathway, and as always, is based around AMD's AM4 socket.

Overall, the limitation in PCIe speeds for A520 is board-wide. Along with the chipset itself being limited to PCIe 3.0 support for both downstream and upstream, Ryzen processors will cap their on-chip PCIe lanes to PCIe 3.0 speeds when paired with an A520 motherboard. Further cutting PCIe-related costs, with A520 AMD offers less scope for lane allocation compared to B550 and X570, which allows vendors reduce the number of components required. There are only a couple of avenues in which vendors can configure their boards, such as selecting between using two PCIe 3.0 x1 slots or two SATA ports. 

Meanwhile, A520 also supports a couple of different configuration options with the 4 high-speed storage lanes coming from the host CPU. This includes building a full-fledged PCIe 3.0 x4 M.2 slot, two PCIe 3.0 x2 M.2 slots, or a PCIe 3.0 x2 M.2 slot with two additional SATA ports.

  • CPU
    • x4 PCIe 3.0 NVMe
    • x2 PCIe 3.0 NVMe + 2 x SATA
    • x2 PCIe 3.0 NVMe + x2 PCIe 3.0 NVMe
  • Chipset
    • 4x PCIe 3.0 + 2x PCIe 3.0
    • 4x PCIe 3.0 + 2 SATA

The remaining PCIe lanes from the CPU, as always, are divided between a full-length PCIe 3.0 x16 slot, and a PCIe 3.0 x4 link between the CPU and the chipset.

As for USB connectivity, A520 offers support for up to four USB 3.2 G2 ports from the CPU. Meanwhile the chipset itself adds another USB 3.2 G2 port, two USB 3.2 G1 ports, and six USB 2.0 ports.

Processor Support

The A520 chipset has identical processor support to that of the mid-range B550 chipset, with official support for AMD's current Ryzen 3000 desktop processors as well as AMD's next-generation Ryzen 4000 processors. Like with the B550 chipset, some A520 boards come with video outputs, which all but confirms support for AMD's Ryzen 4000 APUs – especially seeing as how A520 doesn't officially support the earlier Ryzen 3000 or 2000 series APUs.

AMD AM4 Motherboard Support
AnandTech uArch A320 B350
X370
B450
X470
X570 B550
 
A520
Ryzen 4000 CPU Zen 3 X X Beta
Ryzen 4000 APU** Zen 2 X ?Beta
Ryzen 3000 CPU Zen 2 X Beta
Ryzen 3000 APU Zen+ X X
Ryzen 2000 CPU Zen+ X X
Ryzen 2000 APU Zen X X X
Ryzen 1000 CPU Zen X X X
Athlon A-Series * X X X X
Ryzen Pro CPUs follow their non-Pro equivalents
* Excavator or Carrizo
** Unknown - product not announced yet
 

The AMD Ryzen 3000 CPU stack starts at the Ryzen 3 3100 with four cores and eight threads, which is currently available for $99. This would be a very suitable processor to pair with an A520 motherboard, though more aspiring builders can use any of of the Ryzen 3000 desktop CPUs, including the goliath sixteen core Ryzen 9 3950X.

The Current A520 Motherboard Stack

Accompanying AMD's announcement of the A520 chipset, motherboard vendors have begun rolling out their respective A520 boards. The main form factor of choice for A520 thus far is Micro-ATX, with a couple of Mini-ITX boards including the ASRock A520M ITX/ac and the GIGABYTE A520I AC. Gigabyte also has the only full-sized ATX model announced so far, which is the GIGABYTE A520 Aorus Elite.


The GIGABYTE A520 Aorus Elite ATX Motherboard

A520 boards set to hit the market include some gaming themed models that primarily come from GIGABYTE with its Aorus models, as well as the ASUS TUF Gaming A520M-Plus. The solitary offering from Biostar is aimed at business and casual users with its A520MH V6.0.

The most feature-packed A520 model looks to be the GIGABYTE A520 Aorus Elite with four memory slots that support up to 128 GB of DDR4-4400 memory, a Realtek ALC1200 HD audio codec and an unspecified Realtek Gigabit Ethernet controller. It has two full-length PCIe 3.0 slots that operate at x16/x2, with three PCIe 3.0 x1 slots and a single PCIe 3.0 x4 M.2 slots with four SATA ports.

Announced AMD A520 Models (08/18)
Model Size
ASRock A520M Pro M-ATX
ASRock A520M ITX/ac M-ITX
   
ASUS Prime A520M-K M-ATX
ASUS Prime A520M-A M-ATX
ASUS TUF Gaming A520M-Plus M-ATX
   
Biostar A520MH V6.0 M-ATX
   
GIGABYTE A520M DS3H AC M-ATX
GIGABYTE A520M DS3H M-ATX
GIGABYTE A520 Aorus Elite ATX
GIGABYTE A520M Aorus Elite M-ATX
GIGABYTE A520I AC M-ITX
GIGABYTE A520M H M-ATX
GIGABYTE A520M S2H M-ATX
   
MSI A520M-A Pro M-ATX
MSI A520M Pro-C Dash M-ATX
MSI A520M Pro M-ATX
MSI A520M Vector WIFI M-ATX

At present, we don't have MSRP pricing from any of the vendors, but we have reached out to each vendor individually, and we will update the above chart once we have the official pricing. It is likely that the vast majority of A520 boards will be below $150 due to B550 models starting at that price point. The A520 chipset is its most basic entry-level chipset for Ryzen 3000 processors.

Finally, today's A520 release is a hard launch, with Newegg and other retailers already offering boards for sale. Not every board vendor has their wares on shelves just yet – as is usually the case for low-end board launches, this is a very relaxed launch – but over the coming days and weeks we should see the remainder of the A520s trickle into retail shops.

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  • realbabilu - Tuesday, August 18, 2020 - link

    IT should be ran for ryzen zen2 4000 apu. The main reason of budget pc is budget hardware. Cheap mobo plus Cheap cpu with internal graphics. 4000 apu potentianly KILL Intel chip i3 10th gen if it has Cheaper mobo. Now 4000 apu for New custom pc / diy pc only sold as complete New oem pc. Reply
  • dromoxen - Saturday, August 22, 2020 - link

    The Ryzen 4000 APU's have been announced, just not available to retail. They would seem to be ideal for these .... shame none have 2.5G ethernet or two m.2 slots in Itx.. so B550 ? Reply
  • Guspaz - Tuesday, August 18, 2020 - link

    > Meanwhile, A520 also supports a couple of different configuration options with the 4 high-speed storage lanes coming from the host CPU. This includes building a full-fledged PCIe 3.0 x4 M.2 slot, two PCIe 3.0 x2 M.2 slots, or a PCIe 3.0 x2 M.2 slot with two additional SATA ports.

    Right after this is a table showing PCIe 4.0 for all that, which doesn't agree with the rest of the article.
    Reply
  • Ryan Smith - Tuesday, August 18, 2020 - link

    Sneaky little tableses. Wicked, tricksy, false!

    (Thanks for the heads up!)
    Reply
  • realbabilu - Wednesday, August 19, 2020 - link

    ASRock A520M Pro doesnt support Zen+ ryzen 3 3200G but the ryzen 3 Zen2 4350G not listed on cpulist A520M Pro. But it has hdmi output, for what?
    Msi A520M Pro support 4350G anyway.

    The AMD zen1 12nm has GPU on several chips. AMD Ryzen 3 PRO 3200GE or AMD Ryzen 3 3200G [Passmark 7250]that comparable to Intel Core i3-9300 [Passmark 7267] has powerful Vega8 internal GPU than Intel 630 UHD has.

    The AMD Zen2 7nm Ryzen 3 Pro 4350G around 149 - 170 USD [Passmark 11446] has came out already that comparable to reviewed intel Core i3-10100 130 USD [Passmark 9078] above. However it should be sold as an oem / you must buy it as a whole new computer (DIY PC bundled in my local area). The cheapest motherboard for this ryzen 3 pro 4350G is ASRock B550M-HDV $80 (the B450M-HDV R4 $70 bios not support it yet but 3300X does).

    The cheapest LGA1200 socket for 10th gen intel Core i3-10100 is ASRock H410M-HDV $60.

    So price / perf ratio AMD 4350G = (149+80) / 11446 = 0.02 while intel i3-10100 = (60+130) / 9078 = 0.0209. Almost the same. The price / perf ratio AMD Ryzen 3 3200G 95 USD = (95 + 70) / 7250 = 0.0227. If you got 4350G with 149 USD it will be worth otherwise intel has more value.

    If A520M came at 70USD than super budget
    Reply
  • Brane2 - Tuesday, August 18, 2020 - link

    $100 for MoBo ain't that "budget". Reply
  • npz - Tuesday, August 18, 2020 - link

    Only 1 on Newegg is $104. The rest ranges from $62 - $75 Reply
  • npz - Tuesday, August 18, 2020 - link

    but what I don't like is that only one (a $75 one) has 4 dimms slots while the rest have 2 slots. I understand for mITX, but that's just really cheaping out for mATX. Reply
  • Koenig168 - Tuesday, August 18, 2020 - link

    Two slots is cheaper and easier to wire. Most people do not need more than 2X8GB especially at this price range. The margins are wafer thin for these budget boards so every cent saved counts. Reply
  • sonny73n - Wednesday, August 19, 2020 - link

    why do your want 4 dimms slots? just get 2 higher capacity sticks and save some space. Reply

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