What are the companies of cloud assets which are appropriate for that benchmarking of high endOrhigher throughput programs?

Particularly, machines having a minimum of 8 cores (ideally 16/32), that may sustain consecutive local disk read speeds > 550Mb/s and also the machines are connected via 10GE.

If you will find no cloud companies can this resource be 'rented' on casual basis?

Thanks, Stuart

Perhaps you have investigated Rackspace?

Perhaps you have seen the cloud performance evaluations? It's beginning to become interesting to check the performance in between each cloud provider. Take a look at Cloud Harmon Speed Test Results

A different one to check out is Cloud Sleuth