Guru3D har lige lagt en meget detaljeret test op af AMDs nyeste skud på stammen, nemlig AMD Radeon HD 7990 kortet med to Tahiti chip. Den lammetæsker alt på sin vej og er nu det hurtigste grafikkort, som penge kan købe.
So I started with the line "It's been a long time" and did so deliberately, AMD has waited long, perhaps even way too long before releasing this product. See back in December 2011 the Radeon HD 7970 graphics card was launched. June last year released the GHz model of the 7970 card. AMD ever since has been binning the Tahiti XT GPUs and the "better" batches have been labeled as Tahiti XT2. That tweak brought advantages as the design combined with the right amount of voltage allowed for faster clock frequencies towards 1050 MHz (925 MHz is reference for the standard 7970). That specific SKU was is called GHz edition and comes with a Boost feature, pretty similar to what NVIDIA has been doing on the 650/660/670/680/Titan cards. The R7970 GHz edition can "boost" from 1000 MHz towards 1050 MHz if it meets the right conditions. So the board power (maximum power draw) needs to allow it to do so, if not it drops to 1 GHz or whatever board power range is allowed. Why such a long intro on R7970 GHz you ask? Well, AMD today launched the R7990 with two Tahiti XT2 better known as R7970 GHz GPUs, and that is important to know, alright.
Indsendt af: Ebo
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