AVID 9900-65173-00 Pro Tools | HDX PCIe Core Card (No Software)

Powerful DSP Core Card for Demanding Pro Tools Sessions
The AVID HDX PCIe Core Card is the core processing engine behind Pro Tools | Ultimate systems, delivering the hybrid DSP acceleration required for massive music and post-production projects. This PCIe-based card is designed to handle large session loads with extreme processing power, offering high voice counts and near-zero latency. Whether you're tracking live sessions, mixing complex multichannel audio, or running hundreds of plug-ins, this card ensures your workflow runs efficiently and reliably.

Hybrid DSP and Native Processing for Maximum Flexibility
Equipped with 18 DSP cores and dual high-speed FPGA chips, the HDX PCIe card uses a hybrid engine that intelligently shares tasks between your computer’s CPU and the card’s DSP. By default, Pro Tools runs everything natively until you offload specific tracks to DSP Mode, enabling ultra-low latency monitoring and real-time plug-in processing. This hybrid model lets you tap into DSP power only when needed—without maxing out your host system’s resources.

Massive Voice Counts and Real-Time Performance
With support for up to 2048 voices at all sample rates using a single card in Hybrid Mode, the HDX Core Card dramatically outperforms legacy DSP systems. Even in Classic Mode, one card streams up to 256 voices at 48 kHz. You can scale performance further by installing up to three HDX cards for additional DSP power and up to 192 channels of simultaneous I/O, ideal for immersive formats and high-input studio work.

Reliable Real-Time Plug-In Processing with Near-Zero Latency
The HDX PCIe card is optimized for real-time audio processing with exceptionally low latency—measured at just 0.7 milliseconds. Audio is routed through the card using a central FPGA for sample-accurate timing, while DSP cores process plug-ins with a total throughput of 6.3 GHz. This setup ensures tight timing for complex sessions, precise automation, and seamless punch-in recording with plug-ins active.

Precision Signal Routing and System Integration
The card features two DigiLink ports supporting up to 64 channels of high-resolution I/O and one DigiSerial port for sample-accurate synchronization with Avid peripherals like the SYNC X. Built-in automatic delay compensation aligns hardware inserts across the signal chain with up to 16,383 samples of precision. Combined with 32-bit float signal processing and a 64-bit mixer depth, the HDX card maintains top-tier audio fidelity throughout every session.

Scalable DSP Power for Larger Studio Systems
Studios with larger production needs can scale DSP resources by stacking up to three HDX cards. This setup not only increases the total number of DSP cores and plug-in instances you can run but also expands your system’s I/O capabilities. This scalability makes the HDX PCIe card the ideal choice for professional studios needing reliable, high-performance processing that can grow with their needs.