Chipset Comparison
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| Chipset | Intel 440BX | Intel 815 | Intel 820 | Intel 840 | VIA Apollo Pro 133A |
|---|---|---|---|---|---|
| Launch | April 1998 | June 2000 | November 1999 | October 1999 | November 1999 |
| CPU Platform | Slot 1Socket 370 | Socket 370 | Slot 1Socket 370 | Slot 1Socket 370 | Slot 1Socket 370 |
| Front Side Bus Clock (FSB) | 66/100/133* MHz | 66/100/133 MHz | 66**/100/133 MHz | 100**/133 MHz | 66/100/133 MHz |
| Memory Clock | 66/100/133 MHz | 66/100/133 MHz | 66**/100/133 MHz | 100**/133 MHz | 66/100/133 MHz |
| Asynchronous Memory Clock | No | Yes | No | No | Yes |
| 33 MHz PCI at 133 MHz FSB | Yes | Yes | Yes | Yes | Yes |
| 66 MHz AGP at 133 MHz FSB | No | Yes | Yes | Yes | Yes |
| Maximal DIMM/RIMM Slots | 4 | 3 | 2 | 4 | 4 |
| Maximal Memory | 1024 MB | 512 MB | 1024 MB | 2048 MB | 1536 MB |
| VC SDRAM Support | No | No | No | No | Yes |
| RDRAM Support (Rambus) | No | No | Yes | Yes | No |
| Number of Rambus Channels | N/A | N/A | 1 | 2 | N/A |
| ATA Standard | ATA33 | ATA66ATA100*** | ATA66ATA100*** | ATA66ATA100*** | ATA66 |
| USB-Ports | 2 | 4 | 2 | 2 | 2 |
| max. number of PCI-Masters | 6 | 6 | 6 | 6 | 6 |
| integrated 3D Graphics | No | Yes | No | No | No |
| AGP Speed | 2X | 4X | 4X | 4X | 4X |
| ACPI-Features | Partly | Yes | Yes | Yes | Yes |
* overclocked** not officially supported*** ATA100 Support with ICH2 (makes 815/820/840 to 815E/820E/840E)
We already published a similar table some months ago, but the data is still the same. For a detailed platform comparison, please take a look at the article Showdown at 133 MHz FSB - Part 2, The Real McCoy .
