Dell E521 Personal Computer User Manual


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Specifications
Dell™Dimension™E521ServiceManual
Processor
Processor type
AMDAthlon™64X2dual-core processor
AMD Athlon 64 processor
AMDSempron™processor
Level 2 (L2) cache
Up to 1 MB per core
Up to 256 KB for Sempron processors
Memory
Type
533-MHz, 667-MHz, 800-MHz (when available) DDR2
SDRAM
Memory connectors
four
Memory capacities
256MB,512MB,or1GBnon-ECC
Maximum memory
4GB
NOTE: See Addressing Memory With 4-GB
Configurations to verify the amount of memory
available to the operating system.
ComputerInformation
Chipset
Nvidia GeForce 6150LE
RAID Support
RAID 1 (Mirroring)
DMA channels
eight
Interrupt levels
24
BIOS chip (NVRAM)
4 Mb
NIC
Integrated network interface capable of 10/100
communication
Video
Type
Nvidia integrated video (DirectX 9.0 Shader Model 3.0
Graphics Processing Unit) or optional PCI Express x16
graphics card
Audio
Type
Sigmatel 9227 CODEC (7.1 Channel audio)
ExpansionBus
Bus type
PCI 2.3
PCI Express 1.0A
SATA 1.0 and 2.0
USB 2.0
Bus speed
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
PCI
connectors
two
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