Source:Jumping the gun a bit, Microsoft has published on its Windows Update site a new, WHQL-certified Nvidia graphics driver - version 259.47, which features mentions of quite a few unannounced and unreleased desktop and mobile GeForce 400 series cards.
The 259.47 driver is dated August 21st and has support for GeForce 6, 7, 8, 9, 100, 200, 300 and 400 series models, including the following:
- NVIDIA_DEV.0E23.01 = "NVIDIA GeForce GTS 455 "
- NVIDIA_DEV.0DC4.01 = "NVIDIA GeForce GTS 450 "
- NVIDIA_DEV.0DC5.01 = "NVIDIA GeForce GTS 450 "
- NVIDIA_DEV.0DC0.01 = "NVIDIA GeForce GT 440 "
- NVIDIA_DEV.0DE1.01 = "NVIDIA GeForce GT 430 "
- NVIDIA_DEV.0DE2.01 = "NVIDIA GeForce GT 420 "
- NVIDIA_DEV.0E30.01 = "NVIDIA GeForce GTX 470M "
- NVIDIA_DEV.0DD1.01 = "NVIDIA GeForce GTX 460M "
- NVIDIA_DEV.0DD2.01 = "NVIDIA GeForce GT 445M "
- NVIDIA_DEV.0DD3.01 = "NVIDIA GeForce GT 435M "
- NVIDIA_DEV.0DF2.01 = "NVIDIA GeForce GT 435M "
- NVIDIA_DEV.0DF0.01 = "NVIDIA GeForce GT 425M "
- NVIDIA_DEV.0DF3.01 = "NVIDIA GeForce GT 420M "
- NVIDIA_DEV.0DF1.01 = "NVIDIA GeForce GT 420M "
- NVIDIA_DEV.0DEE.01 = "NVIDIA GeForce GT 415M "
The GF106-based GeForce GTS 450 has already been extensively rumored and is said to have 192 CUDA Cores, 1GB of GDDR5 VRAM (128-bit interface), and GPU and memory clocks of 783 MHz and 3608 MHz, respectively. The GTX 460M has also been mentioned in the configuration of a few notebooks but its specs weren't revealed. At least these two are expected in September.
http://www.tcmagazine.com/tcm/news/hardware/30048/new-geforce-400-series-cards-exposed-25947-driver