Install the package 'dmidecode', then run
sudo dmidecode and look at the output on my laptop it says for example:
Code:
Handle 0x0008, DMI type 6, 12 bytes
Memory Module Information
Socket Designation: DIMM Slot 1
Bank Connections: 0 1
Current Speed: 155 ns
Type: DIMM SDRAM
Installed Size: 2048 MB (Double-bank Connection)
Enabled Size: 2048 MB (Double-bank Connection)
Error Status: OK
Handle 0x0009, DMI type 6, 12 bytes
Memory Module Information
Socket Designation: DIMM Slot 2
Bank Connections: 2 3
Current Speed: 155 ns
Type: DIMM SDRAM
Installed Size: Not Installed
Enabled Size: Not Installed
Error Status: OK
Which shows I've got two slots and that one of them is filled with 2 gigabyte.
usually upgrading ram will not influence you warranty, and usually vendors place 2x1gb instead of 1x2gb.
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