HP Vectra VE4 Reference Manual page 19

Video Graphics Accelerator Chip
The video graphics accelerator is an S3 Incorporated Trio64© chip which combines a 24-bit
RAMDAC, dual programmable clock generators and a high-performance accelerator core in
a single device.
The chip also has the following features:
Advanced Architecture
64-bit graphics engine
1 MB of Fast-Page Mode DRAMs (upgradeable to 2 MB)
24-bit on-chip RAMDAC
135 Mhz output pixel data rate
Hardware full acceleration of graphics functions (BitBLT, 2-point line draws, polygon fills,
clipping)
Multimedia Support
VESA feature connector
Green PC
Hardware and BIOS support for VESA display power management signalling (DPMS)
Display 'Plug and Play' Support
Hardware and BIOS support for DDC 1 monitor communications
Wide Range of Video Resolutions
For additional information, see "Video Resolutions".
Full Software Support
Drivers for all major operating systems including:
Windows 3.11
Windows NT 3.5
Windows 95
OS/2 Warp 3.0
OS/2 2.11
For additional information on video resolutions and operating modes, see Chapter 3,
"Integrated Ultra VGA Controller".
Vectra 4E/xx Technical Reference 1 System Overview 19