B450M-HDV R4.0 AMD B450 AM4 Socket Ryzen 2000 - 5000 Processors DDR4 3200 64GB HDMI DVI-D D-Sub Motherboard SATA 6Gb/s Micro ATX M.2
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AI Verdict
This barebones micro-ATX board is strictly for ultra-budget builders running 65W CPUs like the Ryzen 5 5600G who don't care about overclocking or future upgrades.
This board makes sense if you are pairing it with a 65W chip like a Ryzen 5600G and relying on the built-in HDMI/DVI ports. The naked VRMs and two DIMM slots severely limit its lifespan for high-end gaming rigs. If you try to push a 5800X3D or heavy overclocks, the lack of VRM cooling will cause thermal shutdowns.
If you plan to use an 8-core CPU or want to overclock, step up to a B450 or B550 board with dedicated VRM heatsinks like the MSI B450M Mortar or ASRock B450M Pro4.
Regret Score™
High RiskLower is better — measures purchase-regret risk from real buyer complaints, review credibility, and product maturity
Issues discovered after purchase
Critically weak dimension
Amazon rating vs actual quality
Chance this product isn't for you
Pros
- Costs around $60, making it one of the cheapest AM4 boards available
- Supports Ryzen 5000 series CPUs out of the box on newer stock
- Includes an Ultra M.2 slot running at full PCIe Gen3 x4 speeds
- Features three display outputs (HDMI, DVI-D, D-Sub) for APU builds without a graphics card
Cons
- Zero VRM heatsinks means it will thermal throttle higher-TDP chips like the 5800X
- Only two DDR4 DIMM slots limits your RAM upgrade path to 64GB total
- Lacks a BIOS flashback button, requiring an older CPU if it ships with outdated firmware
- Only one PCIe 2.0 x1 slot, which gets completely blocked by a dual-slot GPU
Dimension Scores
Naked 4-phase VRM overheats easily and causes black screens with anything above a 65W TDP CPU.
Provides only the bare minimum to boot a PC, lacking built-in Wi-Fi, BIOS flashback, or USB-C ports.
Limited to two RAM slots, and the single PCIe x1 slot gets blocked by almost any dedicated GPU.
Standard ASRock UEFI is easy enough to navigate, but lacks advanced tweaking headroom due to hardware limits.
Best For
- Ultra-budget 1080p gaming builds using a 65W Ryzen 5 5600 or 3600
- Basic home office PCs utilizing an APU like the Ryzen 5 4600G or 5600G
- Cramming into compact Micro-ATX or specific ITX cases like the Cooler Master NR200
Not Recommended For
- Upgrading to power-hungry 8-core or 3D V-Cache CPUs like the 5700X3D or 5800X
- Overclocking of any kind due to the naked 4-phase power delivery
Watch Out For
- No VRM heatsinks — if you drop a 105W CPU in here, the VRMs will hit 115°C+ and throttle your system during heavy loads.
- No BIOS flashback button — if you get old stock that isn't Ryzen 5000 ready, you literally cannot update the BIOS without borrowing an older AM4 CPU.
- The single PCIe x1 slot sits directly below the main x16 slot — installing any modern graphics card will completely block you from adding a Wi-Fi or capture card.
- Only one chassis fan header — you must buy a fan splitter cable if your case has more than one intake or exhaust fan.
Full Specifications
| RAM | DDR4 |
| ASIN | B07MWGKHR9 |
| Brand | ASRock |
| Series | B450M-HDV R4.0 |
| Language | English |
| Platform | Windows |
| Batteries | Lithium Metal batteries required. |
| CPU Socket | Socket AM4 |
| Model Name | B450M-HDV R4.0 |
| Item Weight | 1.61 pounds |
| Chipset Type | AMD B450 |
| Manufacturer | Asrock |
| Memory Speed | 3200 MHz |
| Wireless Type | 802.11a |
| Processor Brand | AMD |
| Item model number | B450M-HDV R4.0 |
| Compatible Devices | Personal Computer |
| Memory Clock Speed | 3200 MHz |
| Product Dimensions | 12 x 2.5 x 9.6 inches |
| Computer Memory Type | DDR4 SDRAM |
| Number of Processors | 1 |
| Compatible Processors | Ryzen 2000/3000/4000/5000 Series |
| RAM Memory Technology | DDR4 |
| Item Dimensions LxWxH | 12 x 2.5 x 9.6 inches |
| Memory Storage Capacity | 32 GB |
| Number of USB 2.0 Ports | 2 |
| Is Discontinued By Manufacturer | No |
What Buyers Say
Real-world testing reveals that the naked VRMs will aggressively thermal throttle any CPU drawing more than 65W. People running Ryzen 5 3600s and 5600Gs report rock-solid stability, but those who drop in a 5800X often experience random black screens and shutdowns during stress tests. The layout also frustrates users who buy a dedicated GPU, only to realize it completely covers the lone PCIe x1 slot needed for a Wi-Fi card. The inclusion of just two fan headers forces almost everyone to buy a fan splitter cable just to hook up basic case airflow.
“Bought this for a cheap 5600g build and it works fine, but I tried putting my 5800x in it just to test and the VRMs got so hot my PC literally shut off after 10 mins of gaming.”
Common Praise
- Flawless stability when paired with 65W APUs like the 4600G or 5600G
- Fits perfectly into tight ITX cases like the Cooler Master NR200 without modification
- Booted Ryzen 5000 series chips right out of the box for recent buyers
- The M.2 slot runs at full PCIe Gen3 x4 speeds without disabling SATA ports
Common Complaints
- VRMs hit 115°C+ and cause system shutdowns with 105W TDP processors
- Only one chassis fan header means you have to buy splitters for case fans
- Dual-slot graphics cards completely block the only PCIe x1 expansion slot
- No BIOS flashback button makes updating old stock a nightmare
Ownership Tips
- If you use a downdraft stock cooler like the AMD Wraith Stealth, the airflow actually helps keep the naked VRMs from overheating.
- You cannot rely on software to read the VRM temps accurately on this board; users had to use infrared thermometers to find out they were hitting 115°C.
- XMP profiles for 3200MHz RAM work reliably, but pushing memory overclocks past that often results in boot loops.
Frequently Asked Questions
Will this work with a Ryzen 7 5700X3D or 5800X?
It will physically fit and boot, but it's a terrible idea. The board lacks VRM heatsinks, meaning those high-wattage chips will overheat the power delivery and throttle under heavy load.
Does it support Ryzen 5000 series out of the box?
Most new stock ships with a Ryzen 5000 ready BIOS (version 4.90 or newer). Because there is no BIOS flashback button, you'll need an older CPU to update it if you happen to receive old stock.
Can I overclock my CPU on this motherboard?
Technically yes through the BIOS, but you shouldn't. The naked VRMs get dangerously hot even at stock speeds with higher-end chips, so pushing more voltage is asking for a crash.
How many fans can I plug into this board?
You only get two fan headers total: one for the CPU cooler and one for a case fan. You will absolutely need fan splitters or a fan hub if your case has multiple intake or exhaust fans.
Does it have built-in Wi-Fi or Bluetooth?
No, it has neither. You will need to buy a USB Wi-Fi dongle or a PCIe Wi-Fi card, but remember that a dual-slot GPU will block the only available PCIe x1 slot.
Buying Guide
When buying an ultra-budget motherboard, you are sacrificing power delivery and expansion. This board is basically a simple adapter to connect a low-power CPU to your RAM and storage. Don't buy this expecting to upgrade to a massive 8-core gaming CPU later, because the electrical components physically cannot handle the heat. Plan your build around a 65W processor and a single graphics card, and make sure you buy fan splitters since the board only has one plug for case fans.
Naked VRMs (Voltage Regulator Modules)
These are the components that deliver power to your CPU. Without metal heatsinks on them, they get incredibly hot under heavy load, forcing your CPU to slow down to prevent melting.
Micro-ATX Form Factor
It's a shorter board than standard ATX, which saves money and fits in smaller cases, but it means the slots are crammed together. Your graphics card will likely cover up your other expansion slots.
No BIOS Flashback
If the motherboard's software is too old to recognize your new CPU, you can't just plug in a USB drive to update it. You have to install an older, compatible CPU first just to turn the screen on.
Alternatives
If you want to run a high-end Ryzen 7 or 9, or need built-in Wi-Fi, look for a B550 Micro-ATX motherboard that explicitly features 'VRM heatsinks' and 'BIOS Flashback'.
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