It looks like Leadtek has a nice deal with Capcom, and managed to be first one that bundles Lost Planet: Extreme Condition with its 8600 GT and 8600 GTS cards. A few days ago we wrote about the PC version release of this XboX360 hit "fast-paced" third-person shooter. Since this is a TWIMTBP title, it is a common sense to bundle it with Nvidia based cards.
Both cards are based on Nvidia's mainstream DirectX 10 and Shader Model 4.0, G84 core, with 256MB of GDDR3 that works on a 128bit memory interface, with 32 Stream Processors. Faster one, the Winfast PX8600 GTS TDH works at 675MHz for the core and 2000MHz for previously mentioned 256MB of GDDR3. The core of the Winfast PX8600 GT TDH is clocked at 540MHz, and memory works at 1400MHz.
Shader clocks are not disclosed, but since all other specifications are reference ones, we will assume that Shaders works at 1.18GHz for the GT and 1.45GHz for the GTS version.
You can find more information on Leadtek's homepage.