ATI GPU processing platform

I have a project that requires an ATI 5870/5970 GPU (Graphics processing units) powered server. That is the prime requirement. OS can be Windows or Linux. Memory, 4GB min, drive space less than 50GB, bandwidth less than 100GB/Mo expected, one IP. Require access at Admin level to install and operate software package Seeking quotes for day-by-day or hour-by-hour hosting of this configuration. The right team will have me for a long-term customer. I want value for the money and am willing to schedule time-sharing of the equipment to get there. As comparison, Amazon EC2 offers 2XNewhalem CPUs, NVidia GPU's, 32GB RAM, 160GB disk for $0.761/hr(Cluster GPU).