ASRock
ASRock B550 Phantom Gaming 4 AC Supports 3rd Gen AMD AM4 Ryzen™ / Future AMD Ryzen™ Processors Motherboard
Bottom line: The ASRock B550 Phantom Gaming 4 AC Supports 3rd Gen AMD AM4 Ryzen™ / ($103.64 on Amazon as of 2026-10-06): PCIe 4.0 x16 slot for current-gen graphics cards; main trade-off: only one slot runs at PCIe 4.0; the second x16 slot is PCIe 3.0.
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*Price sourced from Amazon.com. Last updated 2026-10-06. Price and availability subject to change.
Pros & Cons
Pros
- ✓ PCIe 4.0 x16 slot for current-gen graphics cards
- ✓ DDR4 4733+ (OC) memory support for fast RAM kits
- ✓ 8 power phase Digi Power design for mainstream Ryzen CPUs
- ✓ Second PCIe 3.0 x16 slot plus two PCIe 3.0 x1 slots
- ✓ AM4 socket supports 3rd Gen Ryzen and later AM4 Ryzen chips
Cons
- ✗ Only one slot runs at PCIe 4.0; the second x16 slot is PCIe 3.0
- ✗ HDMI is the only listed video output
- ✗ Onboard video works only with Ryzen CPUs that have integrated graphics
- ✗ DDR4 only, with no DDR5 support
Manufacturer description
The ASRock B550 Phantom Gaming 4 AC is an AM4 motherboard built around AMD's B550 chipset, aimed at gamers who want PCIe 4.0 support without paying for a flagship board. It supports 3rd Gen AMD Ryzen processors, and ASRock lists it for future Ryzen chips on the AM4 socket, so you have a path to a later CPU swap. Power comes from an 8 power phase Digi Power design, sized for mainstream Ryzen builds. Memory support reaches DDR4 4733+ when overclocked, so you can pair the board with fast kits and tune for lower latency in CPU-bound games. The expansion slots suit a typical gaming rig: one PCIe…
SpecPicks Verdict
SpecPicks scored ASRock B550 Phantom Gaming 4 AC Supports 3rd Gen AMD AM4 Ryzen™ /… 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.
Frequently Asked Questions
Which Ryzen processors work with the ASRock B550 Phantom Gaming 4 AC?
ASRock lists support for 3rd Gen AMD AM4 Ryzen processors and future AMD Ryzen processors on the AM4 socket. Check ASRock's CPU support list for the BIOS version a specific chip needs.
Is the main graphics card slot PCIe 4.0?
Yes. The board has one PCIe 4.0 x16 slot for your primary GPU. It also has a second x16 slot that runs at PCIe 3.0 and two PCIe 3.0 x1 slots.
How fast can the RAM run on this board?
ASRock rates the board for DDR4 4733+ when overclocked. The speed you can actually reach depends on your memory kit and on the memory controller in your Ryzen CPU.
Can I use the HDMI port without a graphics card?
Only if you install a Ryzen processor with integrated graphics. Ryzen CPUs without integrated graphics need a dedicated graphics card to show any video.
How many expansion cards can I install?
There are four slots in total: one PCIe 4.0 x16, one PCIe 3.0 x16 and two PCIe 3.0 x1. That leaves room for a GPU plus cards such as a capture card, sound card or network adapter.
Key Features
- Supports 3rd Gen AMD AM4 Ryzen / Future AMD Ryzen Processors
- 8 Power Phase Design, Digi Power
- Supports DDR4 4733+ (OC)
- 1 PCIe 4.0 x16, 1 PCIe 3.0 x16, 2 PCIe 3.0 x1
- Graphics Output Options: HDMI
Full Specifications
| Brand | ASRock |
|---|---|
| USB 2.0 | 2 |
| Platform | Windows 10 |
| CPU Model | Ryzen 3 |
| CPU Socket | Socket AM4 |
| Model Name | B550 PHANTOM GAMING 4 AC |
| Unit Count | 1.0 Count |
| Chipset Type | AMD B550 |
| Model Number | B550 PHANTOM GAMING 4 AC |
| Built-In Media | - Quick Installation Guide, Support CD, I/O Shield - 2 x SATA Data Cables - 2 x ASRock WiFi 2.4/5 GHz Antennas - 1 x Screw for M.2 Socket |
| Chipset Family | AMD 500 series |
| Mfr Part Number | B550 PHANTOM GAMING 4 AC |
| Number of Ports | 4 |
| Total Usb Ports | 9 |
| Processor Socket | Socket AM4 |
| Total PCIe Ports | 4 |
| Total SATA Ports | 4 |
| Compatible Devices | Gaming Console, Personal Computer |
| Memory Clock Speed | 4733 MHz |
| Warranty Description | 3 years |
Ready to buy?
ASRock B550 Phantom Gaming 4 AC Supports 3rd Gen AMD AM4 Ryzen™ / Future AMD Ryzen™ Processors 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.
*Price sourced from Amazon.com. Last updated 2026-10-06. Price and availability subject to change.
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