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ASRock B450M-HDV R4.0 AM4 AMD Promontory B450 SATA 6Gb/s Micro ATX AMD Motherboard

  • Based on 2,505 reviews
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Arrives Monday, Dec 12
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  • Cup: socket AM4, 6 power Phase design, supports CPU up to 105W
  • Chipset: AMD Promontory B450
  • Slots : 1 PCIe 3.0 x16, 1 PCIe 2.0 x1
  • Audio: Relate ALC887 7.1-Channel High Definition Audio CODEC
  • LAN: Relate RTL8111H PCIE x1 Gigabit Ethernet Controller
  • CE Approved


ASRock B450M-HDV R4 0 Socket AM4/ AMD Promontory B450/ DDR4/ SATA3&USB3 1/ M 2/ A&GbE/ MicroATX Motherboard


Memory Speed: ‎3200 MHz

Wireless Type: ‎802.11a

Number of USB 2.0 Ports: ‎2

Brand: ‎ASRock

Series: ‎B450M-HDV R4.0

Item model number: ‎B450M-HDV R4.0

Item Weight: ‎1.61 pounds

Product Dimensions: ‎12 x 2.5 x 9.6 inches

Item Dimensions LxWxH: ‎12 x 2.5 x 9.6 inches

Processor Count: ‎1

Computer Memory Type: ‎DDR4 SDRAM

Batteries: ‎Lithium Metal batteries required.

Manufacturer: ‎Asrock

Country of Origin: ‎China

Is Discontinued By Manufacturer: ‎No

Date First Available: ‎February 21, 2019

Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Monday, Dec 12

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

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Top Amazon Reviews

  • Great motherboard for a first-time builder
Style: B450M-HDV R4.0 Pattern Name: Motherboard
If you don't plan on building something super hefty and powerful, this board is perfect for you. Practically came plug-n-play right out of the box, completely compatible with Win10, so while flashing the BIOS isn't necessary, I recommend a clean installation of your OS. Supports up to 32GB RAM, and the PCEIx1 card is ABOVE the 16x, meaning there's easy access for wireless cards and other optional hardware. The two USB 3.1 pinouts are also a godsend, allowing up to a total of 12 USB devices. My only two complains are very minimal; the binary shield is a little flimsy and awkward. Thankfully my PC case had grooves that allowed firm placement, but if you get a case with little to no depth in the back-panel space, I recommend using a small portion of industrial adhesive to hold it in place before aligning your board in the case. My second complaint is design of the DIMM slots, as they don't the typical spring-clamps on the bottom of each slot. Instead, they are stationary mounts that you have to slide your RAM cards in at a VERY slight angle into, pushing in the bottom half first and hearing the *click* before having to apply pressure to their top sides and visually see the top clamps come down. Factory RAM from retail PCs or used ones may get that extra *crunch* sound we all fear, so I highly recommend installing brand new cards. Aside from those very nit-picky complaints, this board has proven to be perfect for anyone not intending to install a massive amount of internal hardware. Highly recommended! ... show more
Reviewed in the United States on April 8, 2022 by Cody Carter

  • Patience and questionable usability
Style: B450M-HDV R4.0 Pattern Name: Motherboard
I noticed this motherboard was the cheapest on Amazon, so as per usual, people fling to that. And honestly it works most of the time. I will say however there are a very steep curve balls thrown with this board. 1. Out of the box it did not POST. And I do not know why, took several tries to get it booting, and when it did, it has a horrendous 15 second delay from pressing the power button to actually seeing the ASRock logo on the screen. Now i say "horrendous" but i only say this because most, if not..ALL motherboards tend to actually post relatively quickly, or do something. This motherboard legitimately sits there in the dark for a bit and then finally it'll boot. now this could be a defect with my unit as i've noticed that it has like a 1 in 3 chance to not boot from cold booting (which would be ram) but i can't tell to be honest. I've had 3 motherboards, and so far, this is by far the slowest one. Even my older asrocks from AM3 or FM2 didn't have this issue. 2. The UEFI BIOS on this board was outdated, and for some reason did not detect -any- M.2 SSDs, SATA or PCIe for me until the bios was updated. 3. This board has DDR4 3200Mhz support, however INTERESTINGLY enough it does not like 3200mhz ram, I hae Corsair 3200Mhz Samsung B die memory, that it did not like whatsoever however it did not mind Crucial Ballistix 2400Mhz memory, even with a hefty 600mhz OC to 3000 CL16. 4. Ryzen 3000 support is there out the box and my 3600 seems to work perfectly fine, in line with other benchmarks on the net, and XFR is available, though using that feature seems silly, and draws unnecessary amounts of extra power for little to no gain. Under normal use, HWinfo shows my 3600 consuming easily 65w like its supposed to be doing between gaming and doing light streaming. Video editing or stressing the chip brought power consumption to about 90w, which is still acceptable, especially with temps only hitting about 70c on the cores, 100c on the VRMs 5. This is a basic motherboard, it gets you from point A to point B. and does it as it should, the only bad thing i'd say is you have to do a little workaround to get any non windows OS systems to not lock up, and secondly the bios boot taking an absurdly long time is really the only issue i have. Other than that I'd buy several of these motherboards so long as i can have it reliable for booting successfully as it doesn't seem like that is the case, though it is better with newer BIOS revisions so theres that. ... show more
Reviewed in the United States on October 13, 2019 by Xeiyros

  • Sometimes the simplestic is the best.
Style: B450M-HDV R4.0 Pattern Name: Motherboard
Want a motherboard that will support a wide variety of CPU's? Like the 2600 or the 3600 or even the Ryzen 5000 (5600 5800 ect.) series? Well then this is a great choice. THOUGH you will need a CPU of a previous generation to use the 5000 series. And yes you will need to preform the BIOS update. It will not provide great overclocking nor would I recommend it for such. Though doing so may cause it to spike the temperature greatly. We know this is just Precision Boost Overdrive. This the motherboard doesn't really handle it that well. I have seen spikes up to 4200 clock speed on this 3600 and the system gets glitchy or jagging does occur. Not all the time but in certain situations but there is no real worry here. SOMETIMES with Ryzen its spiking to max all core overdrive can cause this. Though if it does concern you -then just do the following: Underclock the system. HOWEVER not the way you have heard from so many: Go into Windows power options manager and just set the min and max to 99% of the CPU utilization. This may seem erroneous but believe me when I say the system is faster... Not to mention as a side bonus it is consistently more stable. With alot less stuttering than with PBO So this method so far alleviates that. For example the default Cinebench R20 score for a 3600 is 2802 or so. This system following the above gets a 3152 rating. On the subject of the RAM it also seems to have the widest unofficial ram support. Currently using TeamGroup Elite Plus RAM And though it is not listed as supported for the 3600 it seems to work just fine. This board does have a bad caveat though: Only two RAM slots. If your wanting more than 16/32 GB of RAM. You may be hard pressed to not shell out alot on the memory. ... show more
Reviewed in the United States on May 5, 2021 by kingknightrider

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