Dell Inspiron 620 (Mid 2011) - Manual (Page 63)

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Specifications
Memory
Memory module
connectors two user‑accessible
connectors
Memory module
capacities 1 GB, 2 GB, and 4 GB
Memory type 1333 MHz DDR3 non‑
ECC memory only
Minimum
memory 1 GB
Maximum
memory 8 GB
Possible memory
configurations 2 GB, 3 GB, 4 GB, 6
GB, and 8 GB
NOTE: For instructions on upgrading
the memory, see the Service Manual at
support.dell.com/manuals.
Audio
Audio controller Integrated 5.1 channel;
High Definition Audio
Video
UMA
Video
controller Intel HD Graphics
Discrete
Video
controller AMD Radeon HD 6450
AMD Radeon HD 6670
NVIDIA Geforce G420