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One free scan finds every outdated or missing driver and matches the right update for your exact hardware.Free scan · exact hardware matchThe SOYO SY-6VBA 133 is a late-1990s ATX motherboard built around VIA’s Apollo Pro133 chipset. It supports one Intel Slot 1 Pentium III, Pentium II, or Celeron processor, PC133 SDRAM, and period AGP, PCI, and ISA cards. Its documentation also lists a 3V lithium motherboard battery; check the installed battery holder and polarity before buying a replacement.
How to identify the board
The SY6VBA133 is identified in SOYO’s archived documentation as the SY-6VBA 133, an ATX motherboard using the VIA Apollo Pro133 chipset. The quick-start guide is dated September 1999. SOYO’s SY-6VBA 133 documentation describes the board and its connections.
Which CPUs does the SY-6VBA 133 support?
The board has one Intel Slot 1 processor socket. The user manual states, “The motherboard supports a single Slot 1 processor.” Its documented processor families are Pentium III, Pentium II, and Celeron, with 66, 100, and 133 MHz front-side bus settings. CPU settings are handled through SOYO COMBO BIOS.
These family and bus specifications do not confirm that every individual Slot 1 processor will work in every board revision or BIOS version. Before buying a used CPU, verify the exact processor’s bus requirements and BIOS compatibility, and check that you have a suitable heatsink and retention hardware.
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#1 Best Overall
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Does it support PC133 RAM?
Yes. SOYO lists PC133 SDRAM support and provides four DIMM sockets. The supported module sizes depend on the socket and module type; the manual’s memory table covers module capacities ranging from 8 MB up to 256 MB or 512 MB, depending on the configuration. Do not assume that four large DIMMs can be combined to reach a particular total: check the socket and module rules in the manual’s memory table.
For a replacement or upgrade, look for a 168-pin PC133 SDRAM DIMM, then verify its capacity and density against that table. A listing that merely says “SDRAM” is not enough to establish compatibility; physical fit and electrical standard both matter.
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What battery and restoration parts should you look for?
Motherboard battery
The quick-start guide lists a 3V lithium battery but does not identify the exact factory cell number. A CR2032 3V lithium coin cell is a practical search term, not a confirmed match for every board. Inspect the battery already installed and verify the holder or connector and polarity before ordering. The SOYO quick-start guide is the source for the board’s listed battery type.
Memory and processor
Choose PC133 SDRAM only after checking module density and the manual’s socket rules. For a CPU, stay within the documented Slot 1 Pentium III, Pentium II, or Celeron families and confirm the individual part’s bus and BIOS requirements. Used parts can vary in condition, so prefer listings that identify the exact model and provide credible testing or a return option.
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Cables and other period parts
The board provides two IDE connectors with ATA 33/66 support and a floppy connector. Its original box contents listed an ATA 66 IDE cable and a floppy cable. It also has two USB ports, two serial ports, a parallel port, PS/2 keyboard and mouse connections, and an IrDA header. Confirm the cable type and connector condition rather than assuming a cable is included with a used board.
Which expansion cards fit?
The documented expansion slots are one 32-bit AGP slot, five 32-bit bus-mastering PCI slots, and two ISA slots. These are period interfaces: the board documentation does not specify PCIe or M.2. Match a card to the actual slot type and check its physical clearance and system requirements before purchasing; a modern PCIe card is not a substitute for an AGP, PCI, or ISA card.
Rank #4
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Core specifications at a glance
| Feature | Documented specification |
|---|---|
| Form factor and chipset | ATX; VIA Apollo Pro133 |
| Processor | One Intel Slot 1 Pentium III, Pentium II, or Celeron |
| Front-side bus | 66, 100, and 133 MHz |
| Memory | Four DIMM sockets; PC133 SDRAM; capacity depends on module type and socket |
| Expansion | 1 AGP, 5 32-bit bus-mastering PCI, and 2 ISA slots |
| Storage connectors | 2 IDE connectors with ATA 33/66 support; 1 floppy connector |
| Other I/O | 2 USB, 2 serial, 1 parallel, PS/2 keyboard and mouse, IrDA header |
| Battery | 3V lithium; exact factory cell number not stated in SOYO’s quick-start guide |
Specifications are drawn from SOYO’s SY-6VBA 133 user manual and quick-start guide. The manual documents intended compatibility; it does not establish the condition or present-day reliability of any individual board or used component.
Quick Recap
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