Dell - Dell Dimension E521 System Board
- ...els: four. Interrupt levels: 24 APIC mode. System BIOS chip: 4 Mb (512 KB). System clock: 533- or 800-MHz quad-data rate..
- Expansion Bus: Bus types: PCI and AGP. Bus speed: PCI: 33 MHz. AGP: AGP 1X, 4X, 8X. AGP connector: one low profile. AGP connector size: 172 pins. AGP connector data width (maximum): 32 bits. AGP video bus protocols: 4x mode at 1.5 V. PCI connectors: one low profile. PCI connector size: 120 pins. PCI connector data width (maximum): 32 bits..
- Memory: Architecture: DDR SDRAM. Memory connectors: two. Memory capacities: 128-, 256-, 512-MB, and 1-GB non-ECC DDR SDRAM. Minimum memory: 256 MB. Maximum memory: 2 GB. Memory type: 333-MHz DDR SDRAM (non-ECC). NOTE: DDR 333 memory performs at 266 MHz on 400 front- side bus processors..
- Drives: Externally accessible: one slimline optical bay. one slimline 3.5-inch bay. Internally accessible: one bay for 1-inch high IDE hard drive..