AMD's dual-GPU flagship graphics accelerator, the Radeon HD 5970, is closer than you think it is. Slated for 18th Nov, it includes every feature that allows AMD to reclaim the performance leadership it yearned for since the beginning of this year. In a series of company slides sourced from XtremeSystems Forums, it is learned that this could be one of the first accelerators which AMD "openly" markets as having a "Massive Headroom" for overclocking. While the clock speeds on the HD 5970 are lower than those on the single-GPU HD 5870, AMD lifted limits on what the driver-level ATI Overdrive software can offer in terms of clock speeds. While the engine (core) and memory speeds are set at 720/1000 MHz, the unlocked ATI Overdrive lets users take the clock speeds all the way up to 1000/1500 MHz. That's 30% for the core, and a stellar 50% for the memory.
To back such speeds, AMD seems to have splurged heavily on top-notch components on the PCB. To begin with, the PCB holds two high-grade AMD Cypress GPUs, each with all its 1600 stream processors enabled. The GDDR5 memory, while clocked at 1000 MHz or 4 GT/s, is technically rated by its manufacturer to run at 1250 MHz or 5 GT/s. All systems are powered by high-grade digital PWM voltage regulators, with independent Volterra VRM controllers that allow real-time monitoring, and software voltage control. Barring the five-odd cylindrical solid-state capacitors, Japanese pure ceramic surface-mount capacitors are extensively made use of.