The HD3870 features the latest PCI-Express 2.0 technology, which doubles the original specification's available bandwidth. The card is also bundled with 512MB of GDDR4 memmory clocked at 1152MHz, and a core clock of 800MHz. To keep the card's form factor to a single expansion slot, Sapphire developed the Vapor-X cooling solution, which utilizes heatpipes to transfer heat from the GPU to the cooling fins faster than traditional GPU coolers.