Dell is offering the Dual Nvidia GeForce 8800M GTX upgrade kit for existing XPS M1730 customers who have configured their notebooks with lower-performance GPUs, such as the 8700M GT.

The card can be purchased from Dell.com, either as a stand-alone part for the slightly more adventurous, or with an installation service. The service manual for the XPS M1730 can be found here and video for customers who will install the 8800M GTX card themselves can be found here.

The stand-alone 8800M GTX SLI kit, with 1GB of GDDR3 memory, is priced at $1,099.99. The same product with the installation service costs $1,218.99.

Despite the complications in bringing this to you, this beast of a video card boosts performance over the older Dual 8700M GT cards by up to an astonishing 49%, and is capable of up to a 13,496 3DMark ‘06 score.