Next week NVIDIA will release the GeForce 9800 GX2 and a week later on March 25 we can expect the GeForce 9800 GTX, both cards are based on the G92 GPU. In addition to the GeForce 9800 GX2 the firm will also release the nForce 790i chipset and on March 25 we can expect the nForce 780a and 750a chipsets.
Those anticipating a new architecture, unfortunately, will have to sit this generation out. The core logic used in the GeForce 9800GX2 and GeForce 9800GTX is none other than the 65nm G92 core found on the GeForce 8800GT, though all 128 shaders are enabled -- opposed to the 112 found on last year's G92.
NVIDIA's GeForce 9800GX2 is poised as the ultra high-end enthusiast graphics card. The new adapter takes a page from the GeForce 7950GX2 since it's actually composed of two G92 cores on a single board. Factories are instructed to set these core frequency at 600 MHz and memory frequencies at 2000 MHz.
The GeForce 9800GX2 uses a dual-slot cooling fan. Reference designs of this card include twin DVI outputs and a single HDMI port.
In addition to the GeForce 9800GX2, NVIDIA will lift the embargo on the nForce 790i chipset. nForce 790i is essentially the same as nForce 780i, but with support for 45nm quad-core Intel processors and DDR3 memory.
One week later, on March 25, NVIDIA will lift its embargo on the GeForce 9800GTX. Partners are instructed to pull out all the stops on the G92 silicon, unlocking the core frequency to 675 MHz and the memory frequency to 2200 MHz. Reference designs of this card include twin DVI outputs and no HDMI options.
The new feature on the 9800GTX is the inclusion of two SLI interfaces on the top of the card for three-way SLI support.