ASRock

Asrock B450M/AC AM4 B450 Motherboard

Name: Asrock B450M/AC AM4 B450 Motherboard
Brand: ASRock
SKU: B07SY8CMTX

Status: Asrock B450M/AC AM4 B450 Motherboard: Unavailable on Amazon as of 2026-10-03 10:27 UTC. SpecPicks has no in-stock listing with matching specs on file; the search below lists current offers. eBay sellers may still list this model new or used.

🛒 Search eBay for this model

Bottom line: The Asrock B450M/AC AM4 B450 Motherboard: AMD AM4 socket for Ryzen desktop CPUs; main trade-off: B450 chipset, no PCIe 4.0 support.

Unavailable on Amazon as of 2026-10-03 10:27 UTC

As an Amazon Associate, SpecPicks earns from qualifying purchases. Full disclosure →

Currently unavailable on Amazon. Not the same product — 3 in-stock alternatives:

Similar: ASUS B450 AMD Ryzen 2 Micro ATX Gaming… — $109.99 on Amazon as of 2026-10-07 04:16 UTC (price may vary).

View Current Price — $109.99

Similar: B450M-HDV R4.0 AMD B450 AM4 Socket Ryzen 2000… — $77.75 on Amazon as of 2026-10-07 02:16 UTC (price may vary).

View Current Price — $77.75

Similar: MSI Pro AMD B450 AM4 ATX DDR4-SDRAM Motherboard — $199.99 on Amazon as of 2026-10-06 22:26 UTC (price may vary).

View Current Price — $199.99

Original listing (currently unavailable) → Compare to similar motherboards

By Mike Perry, Founder & Editor-in-Chief · Listing data updated 2026-10-03

Mike Perry — Hardware researcher since 2014, focused on GPU performance across gaming, rendering, and local-LLM inference. Synthesises community benchmarks, manufacturer specs, and public forum data into actionable buying guides. About the author →

Pros & Cons

Pros

✓ AMD AM4 socket for Ryzen desktop CPUs
✓ Dual-channel DDR4, four slots, up to 64GB
✓ Ultra M.2 plus vertical M.2 for NVMe SSDs
✓ Onboard Radeon Vega graphics, runs without a GPU

Cons

✗ B450 chipset, no PCIe 4.0 support
✗ Micro-ATX layout limits slots vs full ATX
✗ Realtek ALC892 codec trails newer ALC1220
✗ Gigabit LAN only, no 2.5G Ethernet

Manufacturer description

CPU: AMD AM4 SOCKET; CHIPSET: AMD PROMONTORY B450; MEMORY: DUAL CHANNEL; 4*DDR4; MAX 64GB; SLOT: 3*PCIE3. 0X16; 3*PCIE2. 0X16; 1*VERTICAL M. 2; GRAPHICS: INTEGRATED AMD RADEON VEGA GRAPHICS; AUDIO: 7. 1CH HD AUDIO(REALTEK ALC892); LAN: PCIEX1 GIGABIT LAN 10/100/1000 MB/S; STORAGE: 4*SATA3 W/R 0, 1, 10; 1*ULTRA M. 2; MAX: 5*USB3. 1; 2*USB2. 0; 1*D-SUB; 1*DVI-D; 1*HDMI; 1*RJ45

SpecPicks Verdict

SpecPicks scored Asrock B450M/AC AM4 B450 Motherboard using a rating × review-volume × price-fit model applied to published specs and reviews across the motherboards category. ASRock's motherboards lineup sits within the broader category mid-tier; price and specs are the deciding factors over brand loyalty here. Judge it on the specification table and the price rather than on sentiment: check the figures that decide your use case, then put it side-by-side with two or three close alternatives in the Compare tool before clicking through.

Common buyer scenarios for motherboards of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the retailer's listing before purchase. Prices and stock are set by the retailer and may have moved since this page was last updated.

Key Features

Cpu: AMD AM4 socket
Chipset: AMD Promontory B450
Memory: Dual Channel, 4* DDR4; Max 64GB
Graphics: integrated AMD Radeon Vega Graphics
Audio: 7. 1Ch HD Audio (Realtek ALC892)

Full Specifications

Cpu	AMD AM4 socket
Audio	7. 1Ch HD Audio (Realtek ALC892)
Brand	ASRock
Memory	Dual Channel, 4* DDR4; Max 64GB
Chipset	AMD Promontory B450
USB 2.0	2
Graphics	integrated AMD Radeon Vega Graphics
Platform	Not Machine Specific
CPU Model	AMD Ryzen 7
CPU Socket	Socket AM4
Model Name	B450M/AC
Chipset Type	AMD B450
Model Number	B450M/AC
Mfr Part Number	B450M/AC
Number of Ports	24
Total Usb Ports	7
Processor Socket	Socket AM4
Total PCIe Ports	3
Total SATA Ports	4
Compatible Devices	Personal Computer

Ready to buy?

Asrock B450M/AC AM4 B450 Motherboard is listed on Amazon. Price, availability, shipping and returns are set by Amazon and its sellers — check the listing for current terms. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.

Check price on Amazon →