Dell Dimension E521 - Manual (Page 50)

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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