Some details about the mobile NVIDIA GeForce 9300M and 9500M GPUs was published on NVIDIA's website:
The 9500M GS will contain 32 stream processors running at 950MHz, while the core as a whole is clocked at 475MHz. The GPU will be linked to 512MB of GDDR 3 or DDR 2 memory, clocked at 700MHz and operating over a 128-bit bus.
The 9300M G has half as many stream processors. They're clocked to 800MHz, while the core runs at 400MHz and the memory at 600MHz. The memory interface is 64 bits wide. Again, there's a choice of GDDR 3 or "cost-competitive" DDR 2, and the GPU will access up to 256MB of it.
When Asus announced it's 12in Lamborghini laptop, the VX3, earlier this week, it said the machine would use the as-yet-unlaunched 9300M with 256MB of graphics Ram.
Intriguingly, Nvidia's pages list two other Asus machines: the U3Sg and the M51Sn which use the 9300M G and the 9500M GS, respectively. The U3S makes an appearance on the Asus website, but while the U3Sg is listed, there's no picture and what appears to be placeholder text.
There's a reference to the M51Sn, but not page for it yet.