Sascha at Eee PC News.de has posted some new information about the upcoming VIA Nano CPU. The Nano (formerly known as Isaiah) is VIA’s replacement for the C7-M CPU. The low power chip is well positioned to do battle with the Intel Atom processor in the low-cost ultraportable computer market.

But how does the Nano compare to the Atom in the most important area, performance? It looks like it might be a bit too early to answer that question. Because VIA plans to release at least 6 different versions of the Nano. The top of the line VIA Nano L2100 will run at 1.8GHz, have an 800MHz front side bus, and consume 25 watts of power. The VIA U2400, on the other hand will run at 1.3+ GHz, have an 800MHz FSB, but use just 8 watts of power, making it a better choice for tiny laptops since you theoretically won’t need a big chunky battery to get decent battery life with this chip.

While Sascha has posted some initial benchmarks, it looks like he’s only been able to compare the faster L2100 chip with other processors including the Intel Atom 230, the Intel Celeron M, and the VIA C7-M. While the Nano L2100 certainly blows away the competition, it’s unlikely that we’ll see this particular chip in the upcoming Everex Cloudbook Max or future versions of the HP Mini-Note. It’s more likely that this chip will be used in desktop computers, while the U2400 and other U-series chips will find their way into netbooks.