NVIDIA carry the GeForce brand into its 8th iteration with G80, the first SKUs to be released called GeForce 8800 GTX and GeForce 8800 GTS respectively, with NVIDIA resurrecting the GTS moniker for the first time since GeForce 2. G80 itself is probably the biggest and most complex piece of mass-market silicon ever created.
|NVIDIA G80 details|
|Foundry and process||90nm @ TSMC, 681M|
21.5mm x 22.5mm
|Chip Package||Flipchip + HS|
|Basic Pipeline Config||
32 / 24 / 192
Textures / Pixels / Z
6 x 64-bit
|System Interconnect||PCI Express x16|
|Display Pipeline||None (NVIO)|
Built on TSMC's 90GT process, G80 is some 681M transistors big with a rough die area of 480mmÃ‚Â², supporting Direct3D 10 (Shader Model 4.0) and implementing a heavily threaded, unified shader architecture. NVIDIA disguise the actual die with a package that includes a heatspreader module, for more effectively getting the heat output from the GPU to the cooling solution. Natively PCI Express, NVIDIA have announced no AGP variant and this time around we honestly don't expect one for any high-end G80 configuration either, despite the option being there with NVIDIA's own BR-series of bridge ICs designed to glue AGP to PCIe and vice versa.
Support for Shader Model 4.0 means a hefty change in specification, one which we condense down for those looking for a checkbox-style overview that scratches the surface.
Time for a quick look at the reference board and our test setup before we dive in to the architecture analysis.