DELL OptiPlex 780 USFF Desktop PC Core 2 Duo E8400 3.0GHz 4GB DDR3 250GB HD

Ultra-small desktop for office tasks

The Dell OptiPlex 780 USFF is an ultra-small form factor desktop built around an Intel Core 2 Duo E8400 3.0 GHz dual-core processor with 6 MB L2 cache. It ships with 4 GB DDR3 SDRAM and a 250 GB Serial ATA hard drive. Windows 10 Pro comes pre-installed alongside a 16X DVD±RW drive, integrated Intel GMA 3000 graphics, Gigabit Ethernet, WiFi and Bluetooth adapters.

Steady performance within thermal limits

The Intel Q45 chipset and 1333 MHz front-side bus keep data moving between the dual-core CPU and memory during typical office workloads. Integrated Intel GMA 3000 graphics and ADI 1984A High Definition Audio handle everyday media playback without a discrete card. The compact USFF chassis relies on its internal airflow design to maintain stable temperatures during sustained use.

Verify memory slots and drive bays before buying

This unit uses DIMM 240-pin DDR3 modules; confirm your upgrade sticks match that exact specification. The 250 GB hard drive occupies the single internal 3.5-inch bay, so additional internal storage would require an external eSATA or USB 2.0 enclosure. Buyers needing more than 4 GB RAM or a second internal drive should look elsewhere.