ASUS ROG-STRIX-RTX3080-O12G-GAMING graphics card

12GB GDDR6X PCIe 4.0 graphics card

The ASUS ROG Strix GeForce RTX 3080 OC Edition targets enthusiasts who need 12GB of 384-bit GDDR6X memory for 4K gaming and creative workloads. It connects via PCI Express 4.0 and drives up to four displays through two HDMI 2.1 and three DisplayPort 1.4a outputs. The Ampere architecture delivers 8960 CUDA cores with a 390W thermal design power rating.

Sustained load behaviour with 390W TDP

Under continuous load the card runs at the Gaming mode boost of 1860 MHz while the 19 Gbps memory feeds the 384-bit bus. The triple-fan cooler uses an Axial-tech design to move air through the 2.9-slot heatsink, keeping temperatures stable during extended sessions. A recommended 850W power supply feeds three 8-pin connectors to maintain the 390W power target without throttling.

Installation notes for a 2.9-slot triple-fan card

The 2.9-slot thickness requires a case with enough clearance for three expansion slots and sufficient length for the triple-fan shroud. Three separate 8-pin PCIe power cables must reach the card; daisy-chained cables can cause instability at full load. GPU Tweak II software switches between OC mode at 1890 MHz and Gaming mode at 1860 MHz, and also controls the fan curve for quieter operation.