As the global DRAM shortage enters a critical phase, driven by insatiable AI data center demand consuming upwards of 70% of worldwide memory production, frame grabber manufacturers dependent on onboard DDR4 memory are facing lead times exceeding 20–30 weeks, allocation rationing, and, in many cases, complete product unavailability. BitFlow, Inc., a division of Advantech, is not one of them.
BitFlow’s entire product line, including the Axion, Aon, Claxon, and Cyton series, is shipping now. The reason: BitFlow never relied on DDR memory in the first place.
“When BitFlow adopted scatter-gather DMA for our frame grabbers, the goals were to use zero CPU cycles and guarantee the absolute minimum latency between when a pixel leaves the camera and when the user’s program can begin processing it. The fact that it also means we have no DDR dependency is paying dividends right now," noted Donal Waide, Director of Business Development, iSystems, Advantech. "Our competitors that built their frame grabbers around commodity DRAM are on backorder. We're not. BitFlow customers can order today and receive product.”
SUPPLY CHAIN DELAYS INTO 2027
Hyperscalers and AI infrastructure builders have locked in production capacity at Samsung, SK Hynix, and Micron, redirecting wafer capacity to high-bandwidth memory (HBM) for AI GPUs at a rate that consumes 3–4 times more silicon per gigabyte than standard DDR. The result: DDR4 production is being phased out, DDR5 supply is constrained, and the manufacturers building frame grabbers around onboard DRAM buffers are caught in the crossfire.
Supply chain conditions as of June 2026:
- DDR4 and DDR5 lead times: 20–30+ weeks in many regions
- DRAM supply growth running below 16% YoY while AI demand outpaces it
- Allocation rationing is standard; some retailers are limiting purchase quantities
- Competitors relying on onboard DDR for frame buffering are facing product availability constraints
BITFLOW’S ANSWER: NO DDR
While other frame grabber manufacturers use DRAM/SDRAM to buffer entire images and frames, BitFlow took a fundamentally different engineering path. Rather than staging image data on expensive, supply-constrained memory chips, BitFlow’s boards move data directly to where it belongs: the host PC’s system RAM.
Waide commented, "BitFlow's original technology for this was known as Flow Thru' technology, and about a decade ago we created a new design called StreamSync acquisition."
BitFlow relies on three precisely engineered components:
- Scatter/Gather DMA Engine: A highly optimized DMA controller streams image data at full sustained throughput directly into user-allocated buffers in the PC’s system or GPU memory. Zero staging. Zero redundant copies.
- Small FIFO Buffers: Compact, purpose-built buffers handle the asynchronous nature of the PCIe bus and manage transient data flow — not frame storage.
- SRAM for Control Tables: Static SRAM holds VCTAB/HCTAB configuration: video timing parameters and camera control signals. This is configuration logic, not image memory, and it requires no DDR whatsoever.
As a result, latency is eliminated, CPU overhead is slashed, and the BitFlow frame grabbers ship today, not six months from now.
BitFlow’s direct-DMA architecture supports sustained high data rates that match the demands of modern high-speed imaging interfaces including Camera Link, CoaXPress, and others. For machine vision, semiconductor inspection, life sciences, and defense applications where throughput and determinism are non-negotiable, the BitFlow design delivers:
- Sustained high-bandwidth data transfers directly to host system memory
- Eliminated frame transfer latency versus onboard-buffer designs
- Reduced CPU overhead through hardware-managed DMA
- Native compatibility with GPU-direct workflows where applicable.
AVAILABLE NOW
BitFlow frame grabbers are in production and available for immediate order. Visit www.bitflow.com for datasheets, specifications, pricing, and purchase options.
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