The HP EliteDesk 800 G1 TWR uses four DDR3 DIMM slots for up to 32GB

The HP EliteDesk 800 G1 TWR uses four DDR3 DIMM slots for up to 32GB

The tower variant of the G1 gets proper desktop memory. Four 240-pin DDR3 DIMM slots running at 1600 MHz, non-ECC, maxing at 32GB. The four-slot layout means you can populate it gradually — start with 8GB, add another stick later, and still have room for more.