VIA PERFORMANCE CHIPSET
APOLLO PRO133A
The VIA Apollo Pro133A delivers advanced performance through
support for AGP 4X, 133MHz FSB, PC133 SDRAM, ATA-66 and
other leading technologies.
VT82C694X Northbridge
VT82C596B Southbridge
The Apollo Pro133A builds on the success of the Apollo Pro133, the industry’s
first available PC133 chipset. The Apollo Pro133A adds even more high-end
features while still maintaining its scalability and superior value. It is the
first chipset to market with support for AGP 4X, the latest advanced
graphics protocol. A 133MHz-capable front-side bus optimizes the
performance of Intel’s 133MHz Pentium® III and other nextgeneration processors. A highly scalable asynchronous bus design also
makes the Apollo Pro133A suitable for Pentium® II and Celeron™-based
systems. Through its advanced memory controller architecture, the Apollo Pro133A
supports PC133 and VC/133 DRAMs, the latest high-performance and cost-effective
memory types. Support for ATA-66, the latest fast-IDE transfer protocol, advances
HDD access and data throughput and boosts overall system performance.
Additional features include 2 USB ports and advanced power management.
APOLLO PRO133A BLOCK DIAGRAM
Slot 1 or Socket 370
Processor
AGP 4X
133MHz FSB
AGP Bus
VT82C694X
510 BGA
133MHz
Memory
Bus
PC133
SDRAM
PCI Bus
ISA
ATA 33/66
BIOS ROM
Keyboard/Mouse
USB
VT82C596B
324 BGA
Clock Buffer
Clock
Generator
SMBus
Power Plane & Peripheral Control
GPIO and ACPI Events
VIA PERFORMANCE CHIPSET
APOLLO PRO133A
Chipset VIA VIA Intel Intel
North Bridge VT82C694X VT82C693 82443BX 82443ZX
CPU Front-side-bus 66/100/133MHz 66/100MHz 66/100MHz 66/100MHz
Memory Bus Settings 66/100/133MHz 66/100MHz 66/100MHz 66/100MHz
Max. Memory 2.0GB 1GB 1GB 256MB
Memory Type PC66/100/133 SDRAM PC66/100 SDRAM PC66/100 SDRAM PC66/100 SDRAM
Asynchronous Setting Y Y N N
AGP 2X/4X Y/Y Y/N Y/N Y/N
South Bridge VT82C596B VT82C596B PXII4 PXII4
ATA-66 Y Y N N
Max. DIMMs 4 4 4 2
FEATURE COMPARISON
USB 2 ports 2 ports 2 ports 2 ports
ACPI/OnNow Y Y Y Y
ECC Y Y Y N
PCI Devices 5 5 5 4
KBC/RTC Y/Y Y/Y N/Y N/Y
Apollo Pro133A Apollo Pro Plus 440BX 440ZX
VC SDRAM VC SDRAM
EDO DRAM EDO DRAM
Peak Chipset Bandwidth
VIA Pro133A chipset
Bus Type Peak Bandwidth
P6 @ 133MHz 1.0GB
PC133 SDRAM 1.0GB
AGP 4X 1.0GB
PCI @ 33MHz 132MB
Total Bandwidth 3.13GB
Intel 440BX chipset
Bus Type Peak Bandwidth
P6 @ 100MHz 800MB
PC100 SDRAM 800MB
AGP 2X 533MB
PCI @ 33MHz 132MB
Total Bandwidth 2.26GB
Peak Memory Bandwidth
Memory Type Peak Bandwidth
PC100 800MB
PC133 1.0GB
DRDRAM @ 600MHz 1.2GB
PC200 (DDR) 1.6GB
DRDRAM @ 800MHz 1.6GB
PC266 (DDR) 2.1GB
All trade names used herein are the property of their respective owners
FEATURES
• 66/100/133MHz front-side bus
settings
• 66/100/133 memory bus settings
• Asynchronous FSB and memory
bus enable highly scalable
configurations
• Supports Intel’s Pentium® III,
Pentium® II, Celeron™ and
upcoming Cyrix slot 1/socket 370
processors
• AGP 2X/4X
• A TA-33/66
VIA Technologies, Inc.
Offices
USA
1045 Mission Ct.,
Fremont, CA 94539
USA
tel: (510)683-3300
fax: (510)683-3301
Taiwan, ROC
8F, #533, Chung-cheng Rd.,
Hsin Tien, Taipei,
Taiwan, ROC
tel: (886-2)2218-5452
fax: (886-2)2218-5453
email:mkt@via.com.tw
• Supports PC133, PC100, VC
SDRAM, and EDO DRAM types
in mixed combinations up to a
total of 2.0GB
• 2 USB ports, UHCI compliant
• Advanced mobile power
management and clock stop
features
• PC98/99 compliant
• 510 BGA VT82C694X North
Bridge
• 324 BGA VT82C596B South
Bridge
www.viatech.com