The AMD Radeon HD 7990 codenamed "New Zealand" has been just revealed by TechPowerUp having posted an image of the reference design along with a GPU-Z screen cap of the graphics card's specifications. In an interesting twist, it seems AMD will be losing the blower-style cooler seen on the Radeon HD 6990 and replacing it with a design that looks to be borrowed from NVIDIA's GTX 590. The fan AMD will be using in the design looks to be the same 70mm fan seen on the previously released HD 7850 and HD 7770.
The idea behind it is a fan blowing air down on to the two seperate heatsinks is quieter then the central blower design used previously. The Radeon HD 7990 itself will sport 2x "Tahiti XT" GPUs clocked at 1 GHz and carries the "GHz Edition" badge. Overall the HD 7990 looks to be a dual GPU monstrosity, coming with 4096 stream processors clocked at 1 GHz, and 6GB of GDDR5 memory (3GB per GPU) clocked at 1250 MHz. The card will be powered by two 8-pin PCIe power connectors and comes with one DL-DVI and four mini-DP output connectors.
According to INPAI, in order to pack two high-performance Tahiti XT GPUs on the same PCB, AMD had to decrease their operating frequencies so these will run at 850MHz, compared to 950MHz in the HD 7970. Furthermore, the GDDR5 memory frequency was also lowered to 1,250MHz (5.00GHz data rate) from 1.375GHz (5.5GHz effective). The lower operating clock speeds of the HD 7990 should also decrease its power consumption and its heat output.
The AMD Radeon HD 7990 6GB will launch April 17th at US $849.
Source: http://itsjhworld.com/technology/computers/graphics-card/amd-radeon-hd-7990-confirmed-specs
The idea behind it is a fan blowing air down on to the two seperate heatsinks is quieter then the central blower design used previously. The Radeon HD 7990 itself will sport 2x "Tahiti XT" GPUs clocked at 1 GHz and carries the "GHz Edition" badge. Overall the HD 7990 looks to be a dual GPU monstrosity, coming with 4096 stream processors clocked at 1 GHz, and 6GB of GDDR5 memory (3GB per GPU) clocked at 1250 MHz. The card will be powered by two 8-pin PCIe power connectors and comes with one DL-DVI and four mini-DP output connectors.
According to INPAI, in order to pack two high-performance Tahiti XT GPUs on the same PCB, AMD had to decrease their operating frequencies so these will run at 850MHz, compared to 950MHz in the HD 7970. Furthermore, the GDDR5 memory frequency was also lowered to 1,250MHz (5.00GHz data rate) from 1.375GHz (5.5GHz effective). The lower operating clock speeds of the HD 7990 should also decrease its power consumption and its heat output.
The AMD Radeon HD 7990 6GB will launch April 17th at US $849.
Source: http://itsjhworld.com/technology/computers/graphics-card/amd-radeon-hd-7990-confirmed-specs
