Why NVIDIA’s Blackwell GB200 Outpaces H100: 5 Key Technical Advantages

Overview of the Blackwell GB200 Series

The GB200 (also called B200) integrates 2,080 billion transistors using TSMC's N4P process in a dual‑chip architecture, equipped with 192 GB of HBM3E memory and delivering up to 20 petaFLOPS of FP4 AI compute—approximately five times the performance of NVIDIA's Hopper H100. The platform offers four configurable chassis sizes, all customizable, and claims a 30× increase in training speed for large models such as a 1.8 T‑parameter GPT‑MoE compared with the H100.

Server Architecture Shift: From HGX to MGX

The GB200 moves the server motherboard from NVIDIA's traditional HGX configuration—typically an 8‑GPU or 4‑GPU high‑performance module—to the open, modular MGX specification. MGX enables broader industry adoption, with the GB200 Switch tray produced by Foxconn and the Compute tray jointly manufactured by Wistron and Foxconn, targeting delivery to major cloud providers. This modular approach is expected to increase rack integration value by 2‑10× across markets such as HBM, copper interconnects, and liquid cooling.

Copper DAC Market Growth

Active optical cables (DACs) are experiencing rapid market expansion, driven by demand for high‑speed, low‑power, long‑distance transmission. Forecasts from LightCounting predict the DAC market will reach $2.8 billion by 2028, and NVIDIA’s strategy emphasizes extensive DAC deployment to support the GB200’s bandwidth requirements.

HBM Evolution and Roadmap

HBM technology has progressed through five generations—HBM, HBM2, HBM2E, HBM3, and HBM3E. The GB200 utilizes HBM3E, slated for shipment in the second half of the year, with NVIDIA as the primary buyer. HBM4 is anticipated to appear around 2026.

Liquid‑Cooling Solutions for High‑Power GPUs

Training large AI models pushes GPU power consumption beyond 1,000 W, approaching the limits of air‑cooling. The GB200 adopts a mature cold‑plate liquid‑cooling system, offering indirect cooling with moderate upfront investment and lower operational costs compared to immersion cooling. This solution provides higher thermal efficiency, enabling sustained high‑performance operation.