S3 · S3 Trio
S3 Trio32 / Trio64
Where Velocity9x started. 0.4.2 was the first release proven on real silicon: a physical S3 Trio64 (2 MB), faster than S3’s own Windows 98 driver in Ironfield RTS at 640x480 (27 fps against 25), with GDI acceleration lifting CrystalMark Retro’s 2D scores. It is also the first card VelocityNT targets.
- Manufacturer
- S3
- Chip
- 86C764
- Family
- S3 Trio
- 3D engine
- none (8514/A 2D engine)
- Bus
- PCI / VLB
- PCI ID
- 5333:8810, 5333:8811
Package
s3
Tested on
Two physical machines.
Acceleration by interface
What has been tested
GDI and DirectDraw on the 8514/A engine, on PCI and on a VESA Local Bus 486 under Windows 95 (installed by hand without the mini-VDD). True Color and 1280x1024 modes, memory permitting.
Known issues
- A second or two of cyan garbage at Windows shutdown, before the safe-to-turn-off screen; cosmetic.
Sources and testing notes
What has been tested
Bring-up target. Display, driver-owned GDI with engine fills and copies, and DirectDraw surfaces have been verified in an emulator on Windows 2000 SP4 and Windows XP SP3. There is no public release; do not install it.
Sources and testing notes
Screenshots

Install on Windows 98
- Take a cold backup and confirm you can reach Safe Mode.
- Download the
s3package(S3 Trio, ViRGE and Trio3D). - Device Manager → Display adapters → Update Driver → Have Disk, over the top of the current driver.
- Shut down fully, then cold-start once.