The specifications table shows that AMD did not remove too much of ASIC directly using the two Tahiti XT core of the Radeon HD 7990. The total number of stream processors remains at 4096 and it still will use two 8-pin power connectors to power it up. It is rated at a TDP of 375W.
The frequency of Radeon HD 7990 is however slightly lower than the current Radeon HD7970 GHz edition. The clock speeds has decreased from 1050MHz to 1000MHz. However, overall computing performance will reach up to 8.2 TFLOPS. Memory frequencies is not modified and maintains at a 6GHz effective frequenciy. Graphics Memory remains the same too at 3GB per GPU, resulting in a total of 6GB and a memory bandwidth of 576GB/s.
In terms of performance, the official reports also provides some performance comparison of the HD 7990 to NVIDIA’s two flagship products, i.e. GTX Titan and GTX 690 in 3DMark “Fire Strike” test. In Performance mode, Radeon HD 7990 is 16% faster than the GTX690 and 29% faster than GTX Titan. In Extreme mode, HD 7990 performs 15% and 31% faster respectively.
