The Tool Desk
Outbyte PC Repair FREERepair Windows errors before they cause bigger problemsFix Now →Outbyte Driver Updater FREEScan for outdated or missing drivers - takes under a minuteDriver Scan →For most AM4 builds, B550 is the better fit: it supports CPU overclocking and provides PCIe 4.0 for the processor-direct graphics slot and first NVMe connection. Choose X570 if you need more chipset-connected PCIe 4.0 devices, more USB or SATA capacity, additional PCIe lane headroom, or a dual-graphics-card configuration. The best choice still depends on the specific motherboard and whether its BIOS supports your processor.
At a glance: B550 vs X570
| Specification | B550 | X570 |
|---|---|---|
| Supported Ryzen families in AMD’s chipset table | Ryzen 3000, 4000 and 5000 desktop families; check individual CPU and board support | Ryzen 2000, 3000, 4000 and 5000 desktop families; check individual CPU and board support |
| PCIe 4.0 | Graphics and NVMe connections only; chipset lanes are PCIe 3.0 | Chipset is PCIe 4.0 |
| Maximum USB ports listed by AMD | 14 total; 6 USB 3.2 Gen2 | 16 total; 12 USB 3.2 Gen2 |
| Maximum SATA connections listed by AMD | 8 | 14 |
| Total / usable PCIe lanes listed by AMD | 38 / 30 | 44 / 36 |
| Overclocking | Enabled | Enabled |
These are chipset-level figures from AMD’s official AM4 chipset specifications, not a guarantee that a particular motherboard exposes every connection or feature. Board makers decide how to allocate lanes, ports and connectors.
Which Ryzen processors work with each chipset?
AMD’s compatibility table lists X570 with Ryzen 2000, 3000, 4000 and 5000 desktop processor families. B550 starts with Ryzen 3000 and lists Ryzen 4000 and 5000 families. Those family-level entries are a starting point, not a guarantee that every processor in a family will work on every motherboard.
Before buying, check the exact motherboard’s CPU-support list and the BIOS version required for your processor. A board may need a BIOS update to recognize a newer CPU; AMD also cautions that support varies by processor and chipset. For example, MSI’s PRO B550M-P specification page lists support for Ryzen 5000, 5000 G-Series, 4000 G-Series and 3000-series desktop processors.
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- AMD AM4 Socket and PCIe 4.0: The perfect pairing for 3rd Gen AMD Ryzen CPUs
- Connectivity: Dual M.2, PCIe 4.0, WIFI 5, 1 Gb Ethernet, rear USB 3.2 Gen 2 Type-A and Type-C, front USB 3.2 Gen 1 Type-A and Type-C
- Comprehensive Cooling: VRM heatsink, PCH heatsink, hybrid fan headers and Fan Xpert 2 utility
- 5X Protection III: all-round protection with LANGuard, DRAM overcurrent protection, overvoltage protection, SafeSlot Core safeguards and stainless-steel back I/O
- Boosted Memory Performance: ASUS OptiMem proprietary trace layout allows memory kits to operate at higher frequencies with lower voltages to maximize system performance.
PCIe 4.0: the important difference is where the lanes come from
B550 does support PCIe 4.0, but not across all of its connections. Its PCIe 4.0 designation applies to the graphics and NVMe connections that run directly from the processor; lanes supplied by the B550 chipset are PCIe 3.0. This is usually enough for a conventional gaming or general-purpose build with one graphics card and a primary NVMe SSD.
X570’s chipset itself uses PCIe 4.0, which gives a system more opportunity to connect additional devices at that generation. That matters if you plan to use multiple fast NVMe drives or expansion cards and want chipset-connected devices to have PCIe 4.0 bandwidth. The exact slot speeds and lane sharing depend on the motherboard’s design, so inspect its manual or specifications rather than assuming every M.2 or expansion slot runs at full speed.
Rank #2
- AMD Socket AM4: Ready to support AMD Ryzen 5000 / Ryzen 4000 / Ryzen 3000 Series processors
- Enhanced Power Solution: Digital twin 10 plus3 phases VRM solution with premium chokes and capacitors for steady power delivery.
- Advanced Thermal Armor: Enlarged VRM heatsinks layered with 5 W/mk thermal pads for better heat dissipation. Pre-Installed I/O Armor for quicker PC DIY assembly.
- Boost Your Memory Performance: Compatible with DDR4 memory and supports 4 x DIMMs with AMD EXPO Memory Module Support.
- Comprehensive Connectivity: WIFI 6, PCIe 4.0, 2x M.2 Slots, 1GbE LAN, USB 3.2 Gen 2, USB 3.2 Gen 1 Type-C
When X570’s extra connectivity is useful
AMD lists more maximum I/O capacity for X570 than B550: 16 total USB ports, including 12 USB 3.2 Gen2 ports, and up to 14 SATA connections, compared with B550’s 14 total USB ports, 6 USB 3.2 Gen2 ports and up to 8 SATA connections. X570 also has 44 total and 36 usable PCIe lanes in AMD’s table, versus B550’s 38 total and 30 usable lanes.
Those differences make X570 worth considering for a storage-heavy workstation, a system with several expansion cards, or a build with unusually demanding USB and SATA needs. The chipset maximums do not mean that every X570 board has all 14 SATA ports or all 12 USB 3.2 Gen2 ports; manufacturers choose which features to implement, and some connections may share bandwidth or disable one another.
Rank #3
- AMD AM4 Socket and PCIe 4.0: The perfect pairing for 3rd Gen AMD Ryzen CPUs.Bluetooth v5.2
- Robust Power Design: 8+2 DrMOS power stages with high-quality alloy chokes and durable capacitors to provide reliable power for the last AMD high-count-core CPUs
- Optimized Thermal Solution: Fanless VRM and PCH heatsink, multiple hybrid fan headers and fan speed management with Fan Xpert 4 or the UEFI Q-Fan Control utility
- High-performance Gaming Networking: WiFi 6 (802.11ax), 2.5 Gb LAN with ASUS LANGuard
- Best Gaming Connectivity: Supports HDMI 2.1 (4K@60HZ) and DisplayPort 1.2 output, featuring dual M.2 slots (NVMe SSD)—one with PCIe 4.0 x4 connectivity, front panel USB 3.2 Gen 1 connector, USB 3.2 Gen 2 Type-C & Type-A ports and Thunderbolt 3 header, 1 x SPI TPM header
Do you need X570 for two graphics cards?
AMD describes X570 as supporting dual graphics-card configurations through two PCIe 4.0 graphics-card slots. AMD’s specification table also lists both B550 and X570 with graphics configurations of 1×16 or 2×8, so the chipset label alone does not tell you whether a particular board supports the configuration you want. Check the board’s slot layout, electrical lane configuration, CPU support and intended graphics-card compatibility.
If your plan depends on two graphics cards, verify that the software and workload can use them. Do not choose X570 solely on the assumption that a second card will automatically improve gaming performance.
Rank #4
- AM4 socket: Ready for AMD Ryzen 3000 and 5000 series, plus 5000 and 4000 G-series desktop processors.Bluetooth v5.2
- Best gaming connectivity: PCIe 4.0-ready, dual M.2 slots, USB 3.2 Gen 2 Type-C, plus HDMI 2.1 and DisplayPort 1.2 output
- Smooth networking: On-board WiFi 6E (802.11ax) and Intel 2.5 Gb Ethernet with ASUS LANGuard
- Robust power solution: 12+2 teamed power stages with ProCool power connector, high-quality alloy chokes and durable capacitors
- Renowned software: Bundled 60 days AIDA64 Extreme subscription and intuitive UEFI BIOS dashboard
Does X570 make games faster?
The chipset by itself is not a reason to expect higher gaming frame rates. B550 and X570 primarily differ in connectivity and expansion options; gaming performance depends on the processor, graphics card, motherboard implementation and workload. Choose X570 for the I/O or expansion it enables, not as a standalone performance upgrade.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Overclocking, cooling and motherboard quality
AMD marks both chipsets as supporting overclocking. That does not mean every motherboard has the same power delivery or cooling capability. Compare the specific board’s voltage regulator design, heatsinks, firmware options and manufacturer guidance against your processor and intended settings. AMD warns that operation beyond stock specifications can void applicable warranties and carries hardware and data risks.
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Best Value
- Supports AMD Ryzen 5000 & 3000 Series desktop processors (not compatible with AMD Ryzen 5 3400G & Ryzen 3 3200G) and AMD Ryzen 4000 G-Series desktop processors
- Supports DDR4 Memory, up to 4400(OC) MHz
- Lightning Fast Experience: PCIe 4.0, Lightning Gen4 x4 M.2 with M.2 Shield Frozr
- Premium Thermal Solution: 7W/mK pad, additional choke thermal pad and M.2 Shield Frozr are built for high performance system and non-stop works
- Powerful Design: Core Boost, Digital PWM IC, 2oz Thickened Copper PCB, Creator Genie, DDR4 Boost
Also compare the features you will actually use: M.2 slot count, lane-sharing rules, onboard networking and audio, rear I/O, fan headers and BIOS-update options. A well-equipped B550 board may fit a particular build better than a basic X570 board, even though X570 has higher chipset-level limits.
Quick Recap
A practical way to choose
- Confirm CPU support. Check AMD’s chipset compatibility information, then verify the exact processor and required BIOS version on the motherboard maker’s support page.
- Map your devices. Count your graphics cards, NVMe drives, SATA devices, USB peripherals and expansion cards. Check which slots connect to the processor and which connect through the chipset.
- Choose B550 for a typical one-GPU build. It offers CPU overclocking and PCIe 4.0 for the processor-direct graphics and first NVMe connection, while avoiding the need for X570’s broader chipset connectivity.
- Choose X570 when you will use its headroom. It is the more suitable option when you need chipset-connected PCIe 4.0 devices, materially more I/O, higher lane capacity or a verified dual-graphics-card board.
- Compare actual board features and cost. Check the motherboard’s specifications and manual for port counts, lane sharing, power delivery, cooling and BIOS readiness. Prices and availability vary by model and retailer.
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
