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Specifications
Dell™Dimension™C521ServiceManual
Microprocessor
Microprocessor type
AMD™Athlon™64X2Dual-Core processor
AMD Athlon 64
AMDSempron™
Internal L2 cache
up to 1 MB per core
up to 256 KB for Sempron
Memory
Type
533-MHz, 667-MHz, 800-MHz z (when available) DDR2
SDRAM
Memory connectors
four
Memory modules supported
256-MB, 512-MB, or 1-GB non-ECC
Minimum memory
256 MB
Maximum memory
4GB
Computer Information
Chipset
nVidia GeForce 6150LE
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 9.0c Shader Model
3.0 Graphics Processing Unit) or PCI Express x16
graphics card
Audio
Type
Sigma Tel 9227 CODEC (7.1 Channel Audio)
Controllers
Drives
two SATA controllers supporting two devices
Expansion Bus
Bus type
PCI 2.3
PCI Express 1.0A
SATA 1.0A and 2.0
USB 2.0
Bus speed
PCI: 133 MB/s
PCI Express x16: 80 Gbps bidirectional speed
PCI Express x1: 2.5 Gbps
SATA: 1.5 Gbps and 3.0 Gbps
USB: 480 Mbps high speed, 12 Mbps full speed, 1.2
Mbps low speed
Cards
PCI
connectors
one