We offer various APIs libraries (Gx, Gy etc) as well as the DSC. Depends on various factors - largely on the application itself as well as the hardware platform. We normally recommend doing a quick installation on the target platform for bench marking. On the other hand if you have target performance figures, we can suggest what kind of hardware would be needed.
Though we can discuss specific figures from various deployments, it may not provide much useful insight due to application factors. Again, we will be happy to discuss over e-mails.