nVidia 'NV15'
The NV15 is used for GeForce 2 Pro and Ti cards. nVidia also used this chip for their Quadro 2 Pro series.
thandor.net - list object
A decent performer in it's day. It was ASUS' 'big upgrade' over the V6600/32M: the transisition from GeForce to GeForce 2.
The GeForce 2 GTS is a 0.18 micron version of the GeForce (which is 0.22) with again 4 rendering pipelines. However, new is that the GTS can render two textures in one clock rather than one texture. NVidia upped the clockfrequencies, improved the chip and improved the T&L engine.
Cards like the GTS, Ti and Ultra were a good choice in it's day. Eventually the GeForce 3, and quickly after, GeForce 4 came along and the faster models of the GeForce 2 disappeared. The much slower MX-variants stayed until the GeForce 4 MX was widely available. > Read more
The GeForce 2 Ti was, in October 2001, a card for the less expensive part of the market. In Q3 of 2001 the GeForce 3 already entered the market which was high-end. The GeForce 2 Ti was eventually replaced by the GeForce 4 MX. > Read more
I bought this card new (unused) in late 2008! Somewhere a few of these cards 'survived' in stock 
.
The GeForce 2 Pro was meant to be an high-end product and uses the GeForce 2 GTS core with faster RAM. My card, as seen on the photo's, has a GeForce 2 GTS chip with 'Pro' stamped onto it. The GTS was shipped with 166MHz RAM and Pro with 200MHz.
Leadtek made a nice card here. It has good cooling with a finishing touch. They also integrated a temperature sensor but I've never seen it working. It probably works only with the original Leadtek drivers and I used the nVidia reference driver for testing and benchmarking. > Read more