I wanted to see if there was any real difference between the DGX Spark and its siblings. Seven GB10 Sparks, same silicon, different chassis, airflow, fan design, power tuning and sustained behaviour. I compared the HP ZGX, Acer GN100, MSI EdgeXpert, Lenovo PGX, Gigabyte AI TOP ATOM, ASUS GX10 and Dell Pro Max on thermals, sustained performance and noise. • HP ZGX Nano G1n Best overall balance. Peak CPU 77.3°C, GPU 69°C. HP rates it at 27.6 dBA under intensive workloads. My ZGX also runs about 10°C cooler than my PGX under sustained loads. • Acer Veriton GN100 Best thermals. Peak CPU 74.7°C, GPU 69°C, GPU power 69.2W. • ASUS Ascent GX10 Strong thermal design. Peak CPU 87.3°C, GPU 82°C, GPU power 69.8W. • MSI EdgeXpert MS-C931 Performance focused. MSI claims 1,729 tok/s vs ~1,600 tok/s for the reference design, with the rear chassis 15°C cooler, top 9.1°C cooler and SSD 9°C cooler in its own testing over a DGX Spark. • Lenovo ThinkStation PGX Performance focused. Sustained system draw has been measured at roughly 104 to 160W. In longer heat-soaked runs, it can edge out DGX Spark by a few percent. • Gigabyte AI TOP ATOM Aggressive power tuning. Peak CPU 90°C, GPU 81°C, GPU power 75.5W. • Dell Pro Max with GB10 Runs warmer. Peak CPU ~87.7°C, GPU ~80°C, GPU power ~70W. Sustained decode settles around 80 to 83°C CPU and 68 to 71°C GPU. The performance gap between these machines is usually small; the thermal gap is a different story.