Key takeaways
- Platform choice depends on radio topology and I/O as much as CPU performance.
- 524WiFi™ Pulse B9574-2x2-SFP emphasizes CPU headroom and expansion; 524WiFi™ Pulse B5424-4x4 emphasizes 4×4 tri-band capacity and Ethernet density.
- 524WiFi™ Pulse B7-04 uses a different upper-band module architecture that must be included in BOM and RF planning.
Compare Pulse B9574-2x2-SFP (IPQ9574), Pulse B5424-4x4 (IPQ5424) and Pulse B7-04 (IPQ5322) around CPU configuration, radio chains, channel width and I/O. Pulse B5424-4x4 uses the catalogue’s Cortex-A55 configuration at up to 1.8 GHz with 4 GB DDR4. Pulse B7-04 combines a 2.4 GHz base radio with a QCN9274/QCN6274 module for upper-band connectivity.
CPU and Reference Design
The IPQ5424 configuration in 524WiFi™ Pulse B5424-4x4 uses a quad-core Cortex-A55 CPU at up to 1.8 GHz and 4 GB DDR4. The IPQ5322 platform described here uses a quad-core Cortex-A53 CPU at 1.5 GHz and 1 GB DDR4. The differences include CPU configuration, memory and radio topology.
Radio Topology — the Part That Determines System Design
Each platform offers a radio architecture for a different system design:
524WiFi™ Pulse B9574-2x2-SFP (IPQ9574): three independent on-board radios, 2×2 each — 2.4GHz (up to 573.6Mbps PHY), 5GHz (up to 2882Mbps PHY), 6GHz (up to 5765Mbps PHY). All three run concurrently.
524WiFi™ Pulse B5424-4x4 (IPQ5424): three independent on-board radios, but 4×4 MU-MIMO on each band — 2.4GHz (802.11b/g/n/ax/be, 23dBm/chain max), 5GHz (802.11a/n/ac/ax/be, 21dBm/chain max), 6GHz (802.11ax/be, 19dBm/chain max), all concurrent. 12× U.FL antenna connectors reflect the 4×4-per-band chain count.
524WiFi™ Pulse B7-04 (IPQ5322): a 2×2 2.4 GHz base radio paired with a separate QCN9274 or QCN6274 Wi-Fi 7 module for 5/6 GHz connectivity. Include the upper-band module, antenna chains and integration requirements in the system configuration.
Plan the Pulse B7-04 BOM around the IPQ5322 base platform and the selected QCN9274/QCN6274 upper-band module. This modular architecture lets the radio configuration follow the application.
Channel Width and Modulation
524WiFi™ Pulse B5424-4x4 supports 240MHz on 5GHz, a step beyond 524WiFi™ Pulse B9574-2x2-SFP’s 160MHz ceiling on that band — relevant if you’re doing 5GHz-heavy backhaul rather than leaning on 6GHz for the wide channels.
I/O and Interfaces
524WiFi™ Pulse B9574-2x2-SFP is the only one of the three with M.2 E-key PCIe 3.0 expansion slots — relevant if your design needs an add-in card (cellular, additional radio) beyond what’s on-board. 524WiFi™ Pulse B5424-4x4 carries the heaviest native Ethernet backhaul (2×10GbE + 4×2.5GbE), which lines up with its role as a high-density AP/gateway aggregation point rather than an edge client device.
Selection Guidance
- Need three genuinely concurrent radios with maximum per-band throughput and PCIe expansion: 524WiFi™ Pulse B9574-2x2-SFP. The 2.2GHz A73 CPU and M.2 slots also make it the better fit if you’re layering additional compute or a cellular module onto the same board.
- Need three concurrent radios with more antenna chains (4×4) and heavier Ethernet backhaul, at a lower CPU clock: 524WiFi™ Pulse B5424-4x4. This is the platform for high-density AP deployments where per-band MIMO order matters more than raw CPU headroom.
- Cost-optimized 2.4 GHz anchor with modular Wi-Fi 7 upper bands: Pulse B7-04, configured with a QCN9274/QCN6274 module and the corresponding antenna and firmware integration.
DR5322S · DR5424 · DR9574S