Dimensionner un GPU pour l'inspection par vision IA : Jetson, RTX ou Xeon-6 bi-GPU ?

Why "just buy a GPU" doesn't work

An industrial AI vision system has three hard limits: frame rate at the line speed, model size (params + image input resolution), and latency budget from camera capture to actuator decision. Pick a GPU too small and you drop frames; pick too big and you've over-spent and over-cooled. The right sizing comes from those three numbers and a small amount of capacity math.

Capacity math in one paragraph

For a single camera at F FPS running a model with measured L ms inference per image on a target GPU, the per-camera GPU utilisation is roughly F × L / 1000. A 30-FPS camera with a 20 ms model uses 60% of one stream; an 8-camera line at 30 FPS with the same model needs ~4.8 streams. Whatever your target GPU, validate the actual L on a sample before committing, vendor MIPS/TOPS numbers are not inference latency.

The three tiers

Tier 1, Jetson-class at the camera

NVIDIA Jetson Orin / NX modules suit single- or low-camera-count inspection where the GPU sits at the camera or in a small inline box. Power envelope ~10 à 60W, fanless or low-noise fan, deployable in DIN-rail or wall-mount cabinets. Best for: spot inspection, simple OCR, presence/absence, gauge reading. See Avalue's NVIDIA Solution platforms including AIB-NIAO-S, AIB-NINX-S and AIB-NW01.

Tier 2, RTX Ada in an AI Box PC

For multi-camera lines (4 à 8 cameras), high-resolution input, or 3D model heads, an industrial box PC with a single discrete RTX Ada (e.g., RTX 2000E Ada in a sealed industrial box) is the sweet spot. Power ~70 à 200W on the GPU, PCIe Gen4 x16, expandable for frame grabbers. The MAB-T660D ships in this tier (RTX 2000E Ada, PCIe Gen4 x16). See our MAB-T690/T660D coverage for the full architecture.

Tier 3, Xeon-6 server with dual-width GPUs

For centralised, many-camera vision, large 3D reconstruction, AOI farms or model-training/refresh, a 1U/2U server with one or two dual-width GPUs and PCIe Gen5 takes over. Avalue's Edge HPC portfolio includes the HPS-GNRU1A 1U system on a single Intel Xeon 6 processor (up to 350W TDP) with FHFL GPU expansion, and the HPS-GNRU4A server supporting four dual-width GPUs over PCIe Gen5. See our Edge HPC coverage.

How to choose

1. List the cameras, their resolution and frame rate.
2. Pick the candidate model (YOLO/Mask-RCNN/custom transformer) and measure inference latency on a candidate GPU with a representative image batch.
3. Multiply: total stream demand = Σ (F × L / 1000) across cameras.
4. Add ~30% headroom for image preprocessing, drift and future model upgrades.
5. Pick the smallest tier that covers the demand and meets the latency budget, Tier 1 if total < one Jetson stream, Tier 2 for multi-camera single-box lines, Tier 3 for centralised multi-line or training workloads.

Pitfalls to avoid

• Sizing on TOPS instead of measured FPS
• Forgetting power and cooling, an RTX Ada in a sealed box may thermal-throttle in summer
• Single-GPU bottleneck when a frame grabber needs PCIe Gen5 x16 bandwidth
• No upgrade path when the model is replaced by a larger one a year later

Where TSL Automation fits

TSL Automation supplies all three tiers, Jetson-class AIB platforms, RTX-Ada-equipped box PCs and Xeon-6 GPU servers. Contact our team with your camera count, frame rate, model and latency budget and we'll shortlist the smallest tier that covers it.