Sounds like a good idea, however there is a problem with doing this review now: 2 of the 4 cards mentioned are not available yet. The Voodoo4 4500, while expected at the beginning of summer, is still not available to consumers or OEMs alike. The ATI Radeon SDR, likewise, has not really been officially announced, let alone available for purchase. As far as the G450 goes, this card uses DDR memory, just with a 64-bit bus.
Perhaps when the above cards actually become available we will look into doing such a review.
[edit] Humm, looks like some people are saying that CompUSA has the V4 4500. That adds one card to the list, but it still makes the most sense to wait until the SDR Radeon is available. [/edit]