16 P4 Chipsets Compared, Continued
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| Intel 845/D | Intel 845E | Intel 845G | Intel 850 | |
|---|---|---|---|---|
| Introduction | July / Dec 2001 | May-02 | May-02 | Jan-01 |
| Northbridge | i82845 | i82845E | i82845G | i82850 |
| Southbridge | i82801BA (ICH2) | i82801BA (ICH2) | i82801BA (ICH2) | i82801BA (ICH2) |
| FSB clock | 100 MHz QDR | 100, 133 MHz QDR | 100, 133 MHz | 100 MHz QDR |
| overclocking | Max. ~150 MHz | Max. ~166 MHz | Max. ~150 MHz | Max. ~130 MHz |
| Memory type | SDRAM | DDR SDRAM | DDR SDRAM | Rambus DRAM |
| Memory clock | 133 MHz / DDR | 100, 133, 166 MHz DDR | 100, 133 MHz DDR | 400 MHz DDR |
| Asynchronous memory clock | Yes | yes | No | no |
| Max. memory | 2 GB | 3 GB | 2 GB | 2 GB |
| Max. modules | 3 DIMM | 3 DIMM | 3 DIMM | 4 RIMM |
| Dual Channel support | no | no | no | yes |
| UltraATA 100/133 | yes / no | yes / no | yes / no | yes / no |
| Max. #USB | 4 | 4 | 4 | 4 |
| USB type | USB 1.1 | USB 2.0 | USB 1.1 | USB 1.1 |
| Max. #PCI | 6 | 6 | 6 | 4 |
| AGP 4X/8X | yes / no | yes / no | yes / no | yes / no |
| Hyper Threading support | no | yes | yes | no |
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| Intel 845PE | Intel 845GE | Intel 850E | Intel E7205 | |
|---|---|---|---|---|
| Introduction | Sep-02 | Sep-02 | May-02 | Nov-02 |
| Northbridge | i82845E | i82845G | i82850E | i7205 |
| Southbridge | i82801DB (ICH4) | i82801DB (ICH4) | i82801BA (ICH2) | i82801DB (ICH4) |
| FSB clock | 100, 133 MHz QDR | 100, 133 MHz QDR | 100, 133 MHz QDR | 100, 133 MHz QDR |
| overclocking | Max. ~200 MHz | Max. ~180 MHz | Max. ~150 MHz | Max. ~200 MHz |
| Memory type | DDR SDRAM | DDR SDRAM | Rambus DRAM | DDR SDRAM |
| Memory clock | 100, 133, 166 MHz DDR | 100, 133, 166 MHz DDR | 400, 533 MHz DDR | 100, 133 MHz DDR |
| Asynchronous memory clock | yes | yes | no | no |
| Max. memory | 3 GB | 3 GB | 2 GB | 4 GB |
| Max. modules | 3 DIMM | 3 DIMM | 4 RIMM | 4 DIMM |
| Dual Channel support | no | no | yes | yes |
| UltraATA 100/133 | yes / no | yes / no | yes / no | yes / no |
| Max. #USB | 4 | 4 | 4 | 4 |
| USB type | USB 2.0 | USB 2.0 | USB 1.1 | USB 2.0 |
| Max. #PCI | 6 | 6 | 6 | 6 |
| AGP 4X/8X | yes / no | yes / no | yes / no | yes / yes |
| Hyper Threading support | yes | yes | yes | yes |