The processors above are lumped into Intel's "Performance Small Form Factor" segment and feature a TDP of 25W at the high end for the SP9400 and continually fall until we reach rock bottom with the single-core U3300 which touts a TDP of 5.5W.

An Intel engineer hinted to DailyTech that the U3300 will be reserved for the "slimmest of slim" notebooks and tablets.  By comparison, the 1.6 and 1.8 GHz processor found in the MacBook Air has a rating of 20W TDP.  The same Intel engineer, speaking on conditions of anonymity, detailed that all of these small form factor processors will find their way into Apple and PC mobile products -- as indicated by other Intel representatives in previous interviews. 

On the chipset front, Intel will launch three SKUs during the second quarter: the GM45, GM47 and PM45. The GM45/47 will feature Intel's new X4500 HD integrated graphics processor which promises DX10 support, increased battery life, integrated HDMI and DisplayPort.

The GM45/47 support 667MHz and 1066MHz FSBs, DDR2/DDR3 memory, and the ICH9M/ICH9M-Enhanced south bridges. The two parts only differ in the clock speed for the graphics core -- the GM45 features a 533 MHz core clock while the GM47 has a faster 640 MHz core clock. 

Intel marketing materials claim GM47 performs twice as high on 3DMark as GM965 found in the current Santa Rosa chipsets.

The PM45 supports all the features of the two aforementioned chipsets minus the integrated graphics core. The PM45 thus will be used with integrated mobile graphics solutions from ATI and NVIDIA.

While the processors and new chipsets are important, we must also take a look at Intel's supporting cast of characters with the Centrino 2 platform. Centrino 2 notebooks will be available with 2GB of Turbo Memory -- Windows Vista ReadyDrive and ReadyBoost compliant.

Networking upgrades are plentiful for the Centrino 2 launch. Intel will launch the 82567LM and 82567LF Gigabit Ethernet controllers for LAN connectivity. Customers will also have a choice of two Shirley Peak-based WLAN controllers with the Intel WiFi Link 5100/5300. Finally, Intel will offer two WiMAX/WiFi controllers in the form of the Intel WiMAX/WiFi Link 5150/5350.

Apple yesterday launched revised MacBook and MacBook Pro notebooks that incorporate Intel’s first run of Penryn processors. Apple insiders confirmed the company will refresh its notebook lineups in June, which comes as no surprise since all Centrino partners indicated they will announce notebooks based on the new Montevina Centrino 2.

Don't expect just the same old notebooks from January this June.  The upcoming second-generation Penryn mobile processors require the new Socket B motherboards.  However, since the thermal envelopes will not change between Penryn revisions vendors will be able to keep the existing form factors, like that found on the ultra-compact Lenovo X300, with minimal changes to the motherboard design.