That was what I was wondering about, what hardware do you require for your work(as in what do you use for work) that you would need an SLI setup, and if they had set the budget, you could have gotten more then you would have with a dell XPS. If you got that computer rig past your CEO, with some technical staff looking it over and approving, I'd consider him careless, stupid or crazy?
Last "system" I obtained for work was from a list that went to an approving list, i could get away with obtaining a 64bit, and go for AMD, extra expenses on the case, videocard, memory and soundcard I wanted were plus-minussed on the bill(the extra part i would have to pay myself).
And the fact that it's Dell makes it even more weird, since the XPS series is not part of business-to-business programs, and it's an individual machine, here in holland on the sole delivery of the machine, this costs are about 90 euro's extra.
About three years ago I worked as a senior system and network engineer and i had to go over the crazy configurations some of the staff wanted to try and spend their budget on. An SLI-configuration, 600+ watt power supplies, external soundcard rig, 3 500GB HDD's, joysticks, steering wheels, and stuff like that were simply taken out. This was not cut from their budget then, but they could then use the money they saved later on RAM upgrades or other usefull stuff for work. One of the reasons why was that i would have to be able to troubleshoot them running company programs/vpn/whatever on it.