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Specifications
Dell™Dimension™E521ServiceManual
AMDAthlon™64X2dual-core processor
AMD Athlon 64 processor
AMDSempron™processor
Up to 1 MB per core
Up to 256 KB for Sempron processors
533-MHz, 667-MHz, 800-MHz (when available) DDR2
SDRAM
256MB,512MB,or1GBnon-ECC
4GB
NOTE: See Addressing Memory With 4-GB
Configurations to verify the amount of memory
available to the operating system.
Integrated network interface capable of 10/100
communication
Nvidia integrated video (DirectX 9.0 Shader Model 3.0
Graphics Processing Unit) or optional PCI Express x16
graphics card
Sigmatel 9227 CODEC (7.1 Channel audio)
PCI 2.3
PCI Express 1.0A
SATA 1.0 and 2.0
USB 2.0
PCI: 133 MB/s
PCI Express:
x1 slot bidirectional speed - 500 MB/s
x16 slot bidirectional speed - 8 GB/s
SATA: 1.5 Gbps and 3.0 Gbps
USB: 480 Mbps high speed, 12 Mbps full speed, 1.2
Mbps low speed