ASUS kicked off its Radeon HD 7790 lineup with custom-design implementations based on its iconic DirectCU II cooling solution. The EAH7790 DirectCU II /OC, pictured below, ships in two variants, one with stock frequencies of 1000 MHz core and 6000 MHz memory; and an OC variant with 1075 MHz core, and 6400 MHz memory. The cards use the company's dual-slot, dual-heatpipe version of DirectCU II. Based on the 28 nm "Bonaire" silicon, the Radeon HD 7790 packs 896 stream processors, dual tessellation units, 56 TMUs, 16 ROPs, and a 128-bit GDDR5 memory interface holding 1 GB of memory; and a brand new dynamic-clock technology. The standard variant should be priced around $149.99, the OC variant could charge $10 more.