hybrid computing with scalable expansion capability the asus esc4000/fdr g2 is the latest high-density gpu server based on the dual intel® xeon® e5-2600 processor platform, featuring eight hot-swappable 3.5" sata hdd cages, a 1+1 80+ platinum 1620w redundant power supply and nine pci-e gen3 x16 expansion slots. it delivers high density computing power, scalable expansion capability, high speed interconnection and an intelligent thermal solution, all in a green design, making it an ideal choice for applications in the hpc field of life and medical science, engineering science, financial modeling and virtualization.