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ASRock B450 PRO4 AM4 AMD Promontory B450 SATA 6Gb/s ATX AMD Motherboard

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  • AMD Promontory B450
  • Supports 105W Water Cooling (Pinnacle Ridge); Supports 95W Water Cooling (Summit Ridge); Supports 65W Water Cooling (Raven Ridge)
  • AMD Ryzen series CPUs (Matisse) support DDR4 3200/ 2933/ 2667/ 2400/ 2133 ECC & non-ECC, un-buffered memory
  • AMD Ryzen series CPUs (Pinnacle Ridge) support DDR4 3200+(OC)/ 2933(OC)/ 2667/ 2400/ 2133 ECC & non-ECC, un-buffered memory
  • AMD Ryzen series CPUs (Picasso) support DDR4 2933/ 2667/ 2400/ 2133 non-ECC, un-buffered memory
  • AMD Ryzen series CPUs (Summit Ridge) support DDR4 3200+(OC)/ 2933(OC)/ 2667/ 2400/ 2133 ECC & non-ECC, un-buffered memory
  • AMD Ryzen series CPUs (Raven Ridge) support DDR4 3200+(OC)/ 2933/ 2667/ 2400/ 2133 non-ECC, un-buffered memory

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  • Overview
  • Specifications
  • Warranty & Returns
  • Reviews
B450 B450
B450 Pro4
  • AMD AM4 Socket
  • Supports DDR4 3200+ (OC)
  • 2 PCIe 3.0 x16, 4 PCIe 2.0 x1
  • AMD Quad CrossFireX™
  • Graphics Output: HDMI, Display Port, D-Sub
  • 7.1 CH HD Audio (Realtek ALC892 Audio Codec), ELNA Audio Caps
  • 6 SATA3, 1 Ultra M.2 (PCIe Gen3 x4), 1 M.2 (PCIe Gen3 x2 & SATA3)
  • 2 USB 3.1 Gen2 (Rear Type A+C)
  • 6 USB 3.1 (2 Front, 4 Rear)
  • Realtek Gigabit LAN
B450
AMD StoreMI Technology

A powerful tool that combines the speed of your SSD with the capacity of your hard disk into a single, fast, easy-to-manage drive. SSDs are fast, but expensive, and offer minimal capacity. Mechanical hard drives boast large capacity for a low price, but are much slower than an SSD. AMD StoreMI technology "combines" these two types of storage into a single drive and automatically moves the data you access the most to the SSD, so you get the best of both worlds: SSD responsiveness, and mechanical hard disk capacity. You can also use up to 2GB of RAM as a last-level cache for ultra-fast data.

B450
Dual M.2 For SSD

Equipped with M.2 slot that supports both SATA3 6Gb/s and PCIe Gen3 x4 Ultra M.2 interface that pushes data transfer speeds up to 32Gb/s, and is compatible with ASRock's U.2 Kit for installing some of the world's fastest U.2 PCIe Gen3 x4 SSD.

B450
Dual USB 3.1 Gen2 (Type-A + Type-C)

This motherboard has a pair of onboard Type-A and Type-C USB 3.1 Gen2 ports built on the rear i/o for supporting next generation USB 3.1 Gen2 devices and to deliver up to 10 Gbps data transfer rates.

USB 3.1 Gen2 doubles the data transfer rate

B450

USB 3.1 Gen2 Type-C doubles the charge speed!

B450
B450
2oz Copper

It comes with 2 ounces copper inner layers, using only carefully selected copper materials for PCB layers, delivering lower temperature and higher energy efficiency for overclocking.

B450
Premium 42A Power Choke
B450

Compared to traditional chokes, ASRock's premium 42A power chokes effectively make the saturation current up to three times better, thus providing enhanced and improved Vcore voltage to the motherboard.

Sapphire Black PCB
B450

Pure black PCB appearance. The new Sapphire Black PCB represents rock-solid quality and gives the motherboard a more mysterious touch.

2oz Copper PCB
B450

Using only carefully selected copper materials for PCB layers, 2oz Copper PCB delivers lower temperature and higher energy efficiency for overclocking.

B450
3 Graphics Outputs

Complete with all three types of most used connectors! Packed with a D-Sub + DisplayPort + HDMI combo. Plus the HDMI port supports 4K resolution.
*Supported with A-Series APUs only.

B450
Triple Monitor

Graphics, graphics and even more graphics! You've demanded for more eye candy, so this motherboard supports Triple Monitor. You may choose up to three display interfaces from the rear i/o to connect monitors and use them simultaneously without installing another graphics card.
*Supported with processors with integrated graphics only.

B450
Solid Capacitor Design

ASRock applied solid capacitors on this motherboard. With these solid caps, this motherboard is allowed to perform more stably and ensure longer lifetime.

B450
ELNA Audio Caps

Who says high quality audio is only available on high-end motherboards? ASRock applied ELNA audio capacitors on mainstream and entry-level motherboards! Compared with traditional solid caps, the leakage current of ELNA audio caps is merely 3uA. This is the key to reduce noise level significantly and satisfy even the pickiest audiophiles.

B450
Digi Power

This motherboard uses a next generation Hybrid Digi Power design to bring precise control and smooth power. With the ensured efficient and clean power delivery to the CPU, the stability and lifespan of motherboard is also greatly enhanced.

B450
A-Tuning

A-Tuning is ASRock's multi purpose software suite with a new interface, more new features and improved utilities.

B450
Full Spike Protection

Some sensitive digital components on the motherboard are vulnerable to power surges, the excessive current may cause your system to malfunction immediately. ASRock Full Spike Protection includes various technologies to prevent your motherboard's components from being damaged by these unexpected voltage spikes.

B450
Live Update & APP Shop

ASRock Live Update & APP Shop is designed for your convenience. We provide various apps and support software for users to download. You can also easily optimize your system and keep your motherboard up to date with ASRock Live Update & APP Shop.


Learn more about the ASRock B450 PRO4

Warranty, Returns, And Additional Information
  • Warranty
  • Limited Warranty period (parts): 3 years
  • Limited Warranty period (labor): 3 years
  • Read full details
  • Return Policies
  • We want to ensure your holiday shopping this year is hassle-free. That’s why we’re automatically extending our return policies on almost every product! For purchases placed between November 1, 2019 and December 24, 2019 you will have until January 31, 2020 to return your product. There's nothing additional that you have to do!
Ownership: 1 week to 1 month
Verified Owner
5/ 5
Good PP 12/6/2019 6:36:07 PM

Pros: runs cool
ryzen 3 support
no xmp prblem
pci slots

Cons: no problem

Overall Review: i like the bios, runs perfect like out of the box

Did you find this review helpful?
Ownership: 1 week to 1 month
Verified Owner
4/ 5
Good motherboard. 12/5/2019 10:37:08 PM

Pros: Doesn't cost that much.

Cons: Motherboard software was not that good, could only load the LAN software and that got it to work.
Pays to have a new copy of windows 10 when building a ryzen computer, its going to need to update to work properly.

Overall Review: Overall a good motherboard. After the updates to software install everything works fine.

Did you find this review helpful?
Ownership: 1 month to 1 year
Verified Owner
5/ 5
So many ports! 12/2/2019 8:03:19 PM

Pros: Has so many ports
Supports up to 64 GB of RAM
Supports many older (and upcoming) generations of Ryzen
B450!

Cons: No built in wi-fi, needs ethernet cable (or usb adapter) for any internet access.

Overall Review: I bought this motherboard because I was on a budget, and I liked the colour scheme; the silver/gray/black really blends in with my system. I would recommend this to a friend.

Did you find this review helpful?
Ownership: 1 week to 1 month
Verified Owner
1/ 5
exclusive windows 10 64x hardware 11/25/2019 10:49:10 PM

Pros: Many options of usb ports and simple to set up. I have been using this build for a few days already.

Cons: The drivers supplied by cd drive and by website are useless. The drivers do not work for win7. The drivers only work using the windows 10 x64 updates. The memory slots are useless if not populated correctly. My memory chips did not work on dimms A1 AND B1, due to memory chips clocks being too fast. The equipment did boot up properly using Dimms A2 and B2. The onboard video provided by the processor are borderline. I will be buying a dedicated video card soon. The sound is terrible.

Overall Review: Nice board, but will be buying a graphics board and a sound card.

0 out of 8 people found this review helpful. Did you?
Manufacturer Response:
Dear Gustavo,

We sincerely apologize for any inconvenience this may have caused you.
The mainboard officially not support Windows 7 but Windows 10.
Please visit link below mainboard's specification page under OS section to verify.
Specification Link: https://www.asrock.com/mb/AMD/B450%20Pro4/index.us.asp#Specification
The Memory slots usage, please visit link below under page 23 and 24.
User manual Link: http://asrock.pc.cdn.bitgravity.com/Manual/B450%20Pro4.pdf

If you have any technical support inquiry, please contact us at http://event.asrock.com/tsd.asp
We will assist you shortly.

Thank you

ASRock Support
Tech Support Email: http://event.asrock.com/tsd.asp
Ownership: more than 1 year
Verified Owner
4/ 5
Great B450 Board 11/19/2019 4:46:10 AM

Pros: No issues, works great out of the Box with AMD Chips
Purchased 3 of these for co-worker gaming PC builds

Cons: The look is a little bland

Overall Review: High recommend this board for a budget build using Ryzen 2600 Chip, pair this with a >1070 NVidia GPU and 16 gigs of ram and 1TB SSD, you will be rocking!

3 out of 3 people found this review helpful. Did you?
Ownership: 1 week to 1 month
Verified Owner
4/ 5
Stable so far 11/5/2019 1:45:15 PM

Pros: - based on AM4 socket
- reputation for stability, upgradability
- six SATA ports, will use as RAID 5 file server in future
- M.2 sockets for future NVMe usage
- decent but not great paper manual
- came with latest BIOS version v3.50 that works with all current processors
- works with Linux Mint 19, kernel v5.0.0

Cons: - strangely organized BIOS, no clock set (?)
- needs mounting holes near rear board (SATA connector) edge to prevent flexing - BE CAREFUL!
- manual needs a more detailed board diagram including mounting hole locations for pre-sales info
- manual does not describe 'legacy BIOS' mode (CSM?) but it does work
- many BIOS function descriptions in manual are poor, don't even expand acronyms (ex PBS)

Overall Review: A good motherboard for non-gamers, daily driver builds.
Memory support is confusing/suspect. I bought Corsair 2666 memory on the QVL but it only came up at 2133 in Auto (JEDEC AFAIK). Had to specifically set the 2666 XMP (OC) profile to get that speed.
For goodness sake HIRE AN EXPERIENCED TECHNICAL WRITER to write your manuals!

1 out of 1 people found this review helpful. Did you?
Ownership: 1 week to 1 month
Verified Owner
5/ 5
Great product, good value, good build quality 10/30/2019 12:21:50 PM

Pros: -easy to put together
-well designed
-will handle ryzen 3
-2 m2 slots

Cons: -need more case fan headers
-no cover for cpu socket

Overall Review: Goof quality, worth the buy. Up and running in minutes.

1 out of 2 people found this review helpful. Did you?
Ownership: 1 day to 1 week
Verified Owner
1/ 5
TRASH motherboard 10/19/2019 6:18:02 PM

Cons: Mouse and keyboard would only work in bios and not in windows.
NON REFUNDABLE
only like 3 fan slots

Overall Review: Terrible, spend an extra hundred for a better experience.

1 out of 8 people found this review helpful. Did you?
Manufacturer Response:
Dear Yevgeniy,

Sorry for any inconvenience this may have caused you.
Please try following to check if its address the keyboard and mouse issue.
Unplug the power, clear the CMOS (refers to user manual link following under page 27: http://asrock.pc.cdn.bitgravity.com/Manual/B450%20Pro4.pdf ).
Test with another known good wired USB keyboard and mouse.

If you have any technical support inquiry, please contact us at http://event.asrock.com/tsd.asp
We will assist you shortly.

Thank you

ASRock Support
Tech Support Email: http://event.asrock.com/tsd.asp
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