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ASRock B450 Steel Legend Socket AM4/ AMD Promontory B450/ DDR4/ Quad CrossFireX/ SATA3&USB3.1/ M.2/ A&GbE/ATX Motherboard

4.6 4.6 out of 5 stars 2,760 ratings
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Amazon's Choice in Computer Motherboards by ASRock

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About this item

  • CPU: Socket AM4, Digi Power design, 6 Power Phase design, Supports 105W Water Cooling (Pinnacle Ridge); Supports 95W Water Cooling (Summit Ridge); Supports 65W Water Cooling (Raven Ridge)
  • Chipset: AMD Promontory B450. OS - Microsoft Windows 10 64-bit
  • Slots: 6x PCI-Express 3.0 x16 Slots (one run at x8, three runs at x4, one run at x2), 4x PCI Express 2.0 x1 Slots
  • Supports DDR4 3533+ (OC)
  • 6 SATA3, 1 Ultra M.2 (PCIe Gen3 x4), 1 M.2 (PCIe Gen3 x2 & SATA3)
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WARNING:

CHOKING HAZARD -- Children under 8 yrs. can choke or suffocate on uninflated or broken balloons. Adult supervision required. Keep uninflated balloons from children. Discard broken balloons at once.

What's in the box

  • - 2 x Screws for M.2 Sockets
  • Compare with similar items

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    ASRock B450 Steel Legend Socket AM4/ AMD Promontory B450/ DDR4/ Quad CrossFireX/ SATA3&USB3.1/ M.2/ A&GbE/ATX Motherboard
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    Price-5% $123.94
    List:$129.99
    -9% $118.00
    Typical:$129.00
    -28% $108.42
    List:$149.99
    -10% $71.99
    List:$79.99
    -17% $99.99
    List:$119.99
    $119.99
    Delivery
    Get it as soon as Monday, Mar 25
    Get it Mar 26 - 29
    Get it as soon as Monday, Mar 25
    Get it as soon as Monday, Mar 25
    Get it as soon as Monday, Mar 25
    Get it as soon as Monday, Mar 25
    Customer Ratings
    For gaming
    4.4
    3.8
    4.1
    4.1
    3.9
    4.0
    Tech Support
    4.0
    2.8
    3.6
    3.9
    3.6
    3.6
    Value for money
    4.3
    3.7
    4.2
    4.0
    3.6
    Stability
    4.3
    4.0
    4.3
    3.7
    3.9
    Sold By
    Amazon.com
    ET CANADA
    Amazon.com
    Amazon.com
    Amazon.com
    Amazon.com
    platform
    windows 10
    windows 10
    not machine specific
    windows 10
    windows 10
    windows 10
    cpu socket
    Socket AM4
    Socket AM4
    Socket AM4
    Socket AM4
    Socket AM4
    Socket AM4
    memory slots
    4
    4
    4
    4
    4
    4
    memory capacity
    64 GB
    128 GB
    128 GB
    128 GB
    128 GB
    128 GB
    compatible processors
    AMD 3rd Generation Ryzen
    AMD 1st Gerenration Ryzen
    AMD 1st Gerenration Ryzen
    card interface
    pci e
    pci e
    pci e
    integrated
    pci e
    pci e, pci
    wireless standard
    bluetooth
    2.4 ghz radio frequency, 5 ghz radio frequency
    801 11 AC

    Product Description

    ASRock B450 STEEL LEGEND Socket AM4/ AMD Promontory B450/ DDR4/ Quad CrossFireX/ SATA3&USB3. 1/ M. 2/ Age/ ATX Motherboard

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    Warranty & Support

    Amazon.com Return Policy:You may return any new computer purchased from Amazon.com that is "dead on arrival," arrives in damaged condition, or is still in unopened boxes, for a full refund within 30 days of purchase. Amazon.com reserves the right to test "dead on arrival" returns and impose a customer fee equal to 15 percent of the product sales price if the customer misrepresents the condition of the product. Any returned computer that is damaged through customer misuse, is missing parts, or is in unsellable condition due to customer tampering will result in the customer being charged a higher restocking fee based on the condition of the product. Amazon.com will not accept returns of any desktop or notebook computer more than 30 days after you receive the shipment. New, used, and refurbished products purchased from Marketplace vendors are subject to the returns policy of the individual vendor.
    Manufacturer’s warranty can be requested from customer service. Click here to make a request to customer service.

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    Customer reviews

    4.6 out of 5 stars
    4.6 out of 5
    2,760 global ratings

    Customers say

    Customers like the performance, appearance and quality of the motherboard. For example, they mention it works well, looks good and is durable. Some appreciate the value for money. That said, opinions are mixed on the RGB support and boot speed.

    AI-generated from the text of customer reviews

    42 customers mention30 positive12 negative

    Customers like the performance of the motherboard. They say it works great with Founders edition graphics cards and has no problems. Some say it's a great product for performance and works straight out of the box.

    "...Overall, the B450 Steel Legend is a good, affordable motherboard to get your Ryzen 3000 working out of the box...." Read more

    "...Edit: PC is working fine, this mother board is running a ryzen 5 3600 with no problems at all...." Read more

    "The motherboard works and looks nice, however, I don't believe the one I received was new...." Read more

    "...At first my pc would keep rebooting no beep no display so i re-positioned the cpu, kept rebooting again, so i re-did everything again except this..." Read more

    34 customers mention34 positive0 negative

    Customers are satisfied with the appearance of the motherboard. They mention that it is a beautiful motherboard at a decent price point. The board looks better in person and is of great quality for the price. It has features to match the aesthetic, and the RGB looks great. Overall, most are happy with the product's appearance.

    "...And everything has been perfectly cool during my gaming sessions. I don't even think I've gone over 75 degrees yet...." Read more

    "...good amount of usb ports and looks pretty good...." Read more

    "...Its a beautiful motherboard at a fairly decent price point. You can't get a better deal on a b450 mobo unless you buy a mATX board...." Read more

    "A great looking Motherboard that pairs well with both 3000 and 5000 series AMD CPUs, you'll have to update bios to run 5000 series, it works just as..." Read more

    31 customers mention24 positive7 negative

    Customers like the quality of the motherboard. They say it's a good solid motherboard, durable, and perfect for their build. Some say that it'll make a great replacement board and is good for gaming and general use PCs. Overall, customers are satisfied with the quality and functionality of the product.

    "Stable and solid so far. This board is cheap and makes a good replacement board without breaking the bank. Running a 5600x on it and it is flying...." Read more

    "...Solid product from ASUS!" Read more

    "This is a great B450 board, but there are some important things I want to stress for potential buyers:1...." Read more

    "...in customizing PC I'm not happy with the package itself, box is not in a good condition the manual and other instruction materials are like dried..." Read more

    24 customers mention24 positive0 negative

    Customers appreciate the value of the motherboard. They say it's a beautiful budget gaming motherboard with great quality for the price. Some customers also say it is worth the price and provides great performance on a budget.

    "...Overall, the B450 Steel Legend is a good, affordable motherboard to get your Ryzen 3000 working out of the box...." Read more

    "...great board and good features for a good price." Read more

    "...Its a beautiful motherboard at a fairly decent price point. You can't get a better deal on a b450 mobo unless you buy a mATX board...." Read more

    "...the cheapest board out there at normal prices, but I still think it's worth it, and even moreso if you can get it on a good sale...." Read more

    20 customers mention20 positive0 negative

    Customers find the setup of the motherboard to be easy. They mention that it works great with no hassle installation and start-up, and comes with everything they need to setup. Some say that the BIOS is easy to navigate and it comes with some great out of the box tools. Overall, most are satisfied with the ease of setup.

    "...The B450 has been extremely easy to work with and build on...." Read more

    "...Booted right up and had no problems with Windows installation or drivers...." Read more

    "...It's very nice and flashy, installation was fairly easy...." Read more

    "...The BIOS is easy to navigate and comes with some great out of the box tools...." Read more

    9 customers mention9 positive0 negative

    Customers find the BIOS easy to navigate and understand. They say the layout is simple and direct. Customers also say it's good considering the price. They mention that the board is pretty basic but great for its value.

    "...not had any problems with the ASRock RGB software and the BIOS layout is very simple and direct...." Read more

    "...The BIOS is easy to navigate and understand even if you only get the basics of overclocking. Solid product from ASUS!" Read more

    "...The look of this board is awesome, it's minimal and clean with a nice use of digital camo print, steel accents, and RGB...." Read more

    "Pretty standard mobo overall. The BIOS is very easy to navigate, and gives you boot keys on startup which is nice...." Read more

    25 customers mention16 positive9 negative

    Customers are mixed about the RGB support of the motherboard. Some mention that it has nice RGB, is easy to install, and goes great with their RAM. However, others say that it's the worst RGB software they've ever used and that there's still no RGB support for this board for Linux.

    "...this motherboard for my son's Christmas build and it paired flawlessly with a Ryzen 5 2600x...." Read more

    "...The RGB was bugging out as well, but that was fixed by re-flashing the RGB firmware to the..." Read more

    "...Used 2x 8gb 3000mhz Owl RamExcellent RGB support and I love the bios features...." Read more

    "...the motherboard comes with M.2 armor and is sustainable for 32gb of ram (Used Corsair Vengeance RGB Pro 2x16) Buy this if you want a affordable..." Read more

    7 customers mention3 positive4 negative

    Customers are mixed about the boot speed of the motherboard. Some mention it's fast and runs everything fast and smooth, while others say that it causes their PC to stutter.

    "...Then I bought this and I found that the speed of starting my pc becomes 3x slower...." Read more

    "...Am4 and .ddr4 still holding its ownRuns everything fast and smoothNeed to update the bios though which was painless" Read more

    "...boot speed is not as fast as I expected, it turns cpu fan to 100% for a few seconds before applying custom fan curve (default fan curve is not good)...." Read more

    "Shipped fast delivered fast, motherboard was flawless until my daughter's bf messed up my cpu holder,,, now what" Read more

    Make sure to update your BIOS!
    5 Stars
    Make sure to update your BIOS!
    This is a great B450 board, but there are some important things I want to stress for potential buyers:1. I have received 2 of these boards at this point (I mistakenly RMA'd the first board - more on that below) and both boards arrived Ryzen 3000 ready, with stickers on the box advertising them as such. Both were able to post with my Ryzen 5 3600 without issue. As long as you ensure that you're buying from Amazon and not one of the 3rd party retailers, you should almost be guaranteed to receive a Ryzen 3000 ready example.2. If you're using this board with an M.2 SSD, note that there is a protective piece of plastic on the thermal pad on the underside of the M.2 heatsink. I didn't notice this when I first set up my build, and only noticed it the second time because I laid the heatsink upside down whilst installing my SSD.3. Make sure to update your BIOS immediately! The reason I RMA'd my first board is because when my RAM was clocked at any speed above 3000mhz (it's rated for 3400), my audio would crackle and cut out. I initially assumed this was due to faulty onboard audio and RMA'd. Upon setting up my second example, I went straight into Windows without overclocking my RAM (it defaults to 2133mhz) and noticed 0 audio issues. Went back into the BIOS, overclocked, boom, audio issues were back. I did a bit of digging and found that the old BIOS that these boards ship with (circa July 5th) is known for having audio issues when using XMP. After updating to the most recent BIOS from ASRock's website, I now have 0 audio issues running my RAM at 3200mhz (I wasn't able to post at 3400 on the old BIOS, and I haven't attempted it yet on the new BIOS).Besides all that, the final point I have is that if you're interested in this board for its RGB capabilities, I will warn you that the LEDs on the top of the chipset heatsink are extremely bright. There isn't any kind of diffuser on them, so if your PC is below you (mine is to my left on the bottom shelf of a bookshelf), they will constantly be noticeable in your peripheral vision. However, using ASRock's software, you can actually customize each individual LED on both the chipset heatsink and rear I/O cover, and you can disable those top LEDs whilst keeping the lower LEDs active. Personally I prefer to disable the RGB altogether, but I figured this was worth mentioning.
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    Top reviews from the United States

    Reviewed in the United States on August 19, 2019
    Customer image
    5.0 out of 5 stars Compatible and Desktop Ready with AMD RYZEN 3000
    Reviewed in the United States on August 19, 2019
    Like many people, I was searching for a decent motherboard compatible with Ryzen 3000. Well, this is it. The B450 Steel Legend (as well as the Micro ATX version, B450M) should come updated out of the box if you purchase new from Amazon Services.

    If you are hesitant to purchase this board, don't worry. So far, it has worked perfectly with my Ryzen 7 3800X and EVGA 2070 XC Ultra. Despite the subpar VRM and only using the Wraith Prism, my CPU temperatures only fluctuate between 50-60s during gaming with only two case fans from my NZXT H510. And everything has been perfectly cool during my gaming sessions. I don't even think I've gone over 75 degrees yet.

    Overall, the B450 Steel Legend is a good, affordable motherboard to get your Ryzen 3000 working out of the box. And having a PCI-E STEEL SLOT and single RAM retention clip/lock is a nice touch when using a big graphics card. Furthermore, I have not had any problems with the ASRock RGB software and the BIOS layout is very simple and direct.

    The B450 has been extremely easy to work with and build on. However, if you are expecting more premium features from this board, you should look elsewhere. For the price though, it is a great deal!

    Note: If you’re planning to use the Wraith Prism, I recommend adjusting the fan curves or purchasing another cooler if you want a silent experience out of the box. It does the job but with a little too much noise for my taste.
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    24 people found this helpful
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    Reviewed in the United States on November 10, 2023
    Reviewed in the United States on March 17, 2020
    Reviewed in the United States on January 2, 2024
    Reviewed in the United States on January 16, 2020
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    5.0 out of 5 stars Great performance on a budget
    Reviewed in the United States on January 16, 2020
    I used this motherboard for my son's Christmas build and it paired flawlessly with a Ryzen 5 2600x. Booted right up and had no problems with Windows installation or drivers. For a 'stormtrooper' type build it has a cool color scheme with the urban winter camo. It also includes an NVMe aluminum heatsink with thermal pad, which was appreciated. It's not the cheapest board out there at normal prices, but I still think it's worth it, and even moreso if you can get it on a good sale.

    I haven't done any overclocking as of yet, since it's really only used for casual gaming, but all the features are there for when my son wants to push the performance. The BIOS is easy to navigate and understand even if you only get the basics of overclocking. Solid product from ASUS!
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    4 people found this helpful
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    Top reviews from other countries

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    Bob Nalleweg
    5.0 out of 5 stars Great for upgrading to Windows 11
    Reviewed in Canada on January 28, 2024
    OMAR007
    5.0 out of 5 stars Buena tarjeta para actualizar PC
    Reviewed in Mexico on March 22, 2023
    Customer image
    OMAR007
    5.0 out of 5 stars Buena tarjeta para actualizar PC
    Reviewed in Mexico on March 22, 2023
    La tarjeta madre es buena opción para actualizar el PC, tiene un precio competitivo en comparación con otros productos de acuerdo a lo que ofrece, yo la compré para actualizar mi PC ya que adquiri un nuevo procesador (Ryzen 5600X) con el cual no fue necesaria la actualización del BIOS, ya viene lista, le metí 4 discos duros dos mecánicos y dos SSD y 64GB de RAM, adicional tiene un disipador de calor de MSI el cual se pudo montar sin problemas, hasta ahora ha tenido un buen funcionamiento con lo que he instalado, lo del RGB no lo he visto a fondo porque no es algo escencial para mí. El sonido está muy bien, yo la uso con equipo 5.1 y va perfecto, trae también salida de audio óptico por si ocupas. Definitivamente una tarjeta a considerar.
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    3 people found this helpful
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    João Paulo Teixeira
    5.0 out of 5 stars Ótima placa
    Reviewed in Brazil on September 21, 2022
    Huseyin
    5.0 out of 5 stars Carte graphique incroyable
    Reviewed in France on December 13, 2023
    Selvakumar
    5.0 out of 5 stars Good product very nice
    Reviewed in India on August 15, 2023
    2 people found this helpful
    Report