Anand van AnandTech heeft een review geschreven van de VIA Apollo Pro 133A chipset. De 'A' is hier toegevoegd omdat hij nu support heeft voor AGP 4X. Hieronder heb je vast een gedeelte uit de review, lees hier verder.
Feature-wise, the Apollo Pro 133A is just what the doctor ordered, it combines all of the "next-generation" features that we're looking for. Although it may not offer the same amount of memory bandwidth as the i820, it is definitely a good solution for current 133MHz FSB CPUs, at least until RDRAM takes off as the next standard as Intel is claiming it will become.
The chipset, like all of VIA's solutions, uses the familiar North/South Bridge construction with the memory, AGP and CPU interactions controlled by the North Bridge and all other peripherals (i.e. IDE controllers, PCI bus, etc…) controlled by the South Bridge. How does the new North Bridge make the Apollo Pro 133A what it is?
The North Bridge that makes up the chipset is the VIA VT82C694X as is seen to the right. This is the first VIA North Bridge to be manufactured out of National Semiconductor's fabrication plants, which VIA acquired earlier this year, hence the National Semiconductor logo.
The 694X is virtually identical to VIA's VT82C693A that was present as the North Bridge on Apollo Pro 133 boards. It supports the 1/2 AGP clock divider, the 133MHz FSB frequency as well as asynchronous operation of the memory bus at either the FSB frequency, FSB - 33MHz or FSB + 33MHz (combinations greater than 133MHz are not supported). This means that the memory frequencies supported by the chipset are 66MHz, 100MHz, and 133MHz. It also allows you to combine a 133MHz FSB CPU with slower PC100 SDRAM that doesn't cut it at 133MHz.
Verderop in de review kijkt Anand ook nog even naar Virtual Channel SDRAM.