0000922423-99-000767 SC 13G/A 1 19990610 3DFX INTERACTIVE INC 0001010026 7372 770390421 CA 0201 SC 13G/A 34 005-52571 99644077 4435 FORTRAN DR SAN JOSE CA 95134 4089354400 4435 FORTRAN DR SAN JOSE CA 95134 GILDER GAGNON HOWE & CO LLC 0000902464 133174112 NY 1231 SC 13G/A 1775 BROADWAY 26TH FLOOR NEW YORK NY 10019 2127652500 1775 BROADWAY 26TH FLOOR NEW YORK NY 10019 GILDER GAGNON HOWE & CO 19930428 SC 13G/A 1 000092242399000767-001-seq1-sc-13g-a.txt SCHEDULE 13G AMENDMENT NO. 1