APOLLO PRO133A
The VIA Apollo Pro133A delivers advanced performance through
support for AGP 4X, 133MHz FSB, PC133 SDRAM, ATA-66 and
other leading technologies.
V I A P E R F O R M A N C E C H I P S E T
VT82C694X Northbridge
VT82C596B Southbridge
AGP Bus
PCI Bus
133MHz
Memory
Bus
SMBus
Power Plane & Peripheral Control
GPIO and ACPI Events
ISA
ATA 33/66
BIOS ROM
USB
Keyboard/Mouse
Slot 1 or Socket 370
Processor
VT82C694X
510 BGA
VT82C596B
324 BGA
AGP 4X
PC133
SDRAM
Clock
Generator
Clock Buffer
APOLLO PRO133A BLOCK DIAGRAM
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 next-
generation processors. A highly scalable asynchronous bus design also
makes the Apollo Pro133A suitable for Pentium II and CeleronTM-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.
133MHz FSB
V I A P E R F O R M A N C E C H I P S E T
APOLLO PRO133A
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, CeleronTM and
upcoming Cyrix slot 1/socket 370
processors
AGP 2X/4X
ATA-33/66
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
w w w . v i a t e c h . c o m
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
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
FEA
TURE COMP
ARISON
Chipset
VIA
VIA
Intel
Intel
Apollo Pro133A
Apollo Pro Plus
440BX
440ZX
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
VC SDRAM
VC SDRAM
EDO DRAM
EDO DRAM
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
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
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