Dell Dimension C521 - Manual (Page 33)

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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