The guys over at Warp2Search & MaxReboot have got there hands on some new Dets, v27.50 for Windows 95/98/98SE/ME and v27.51 for Windows 2000 & XP. They have also put up a short performance test using 3DMark 2001 SE.
Note: These are unofficial/ beta drivers use them at your own risk, and if your computer dies a slow painful death its your fault ;)
News source: Warp2Search
View: New Dets Performace chart
Download: Detonator v27.50 Windows 9x/ME
Download: Detonator v27.51 Windows 2K/XP