"...Are you perhaps talking about video editing or CGI rendering?.."
Yes. Video editing and CGI. The workflow normally requires the use of MASSIVE memory mapped files. Additionally, a given artist may do several "lo res" renders before shipping off to the farm. ("Lo res" being a relative word. Because in most cases we're talking about 2560x1440 or 1080p minimum.) I really don't see how your tech guys are able to get that to work for you on cards that have 1GB memory. But if they can, then you'd better NEVER let those guys go because they are worth their weight in gold. (Unless you don't do any CGI or video editing???)