Type: MSM7227
Manufacturer: Qualcomm
Year Released: 2009
Predecessor: Qualcomm MSM 7225 (528MHz clock speed, 32 bit)
Instructions Sets: ARMv6
CPU Core: ARM11
Features: Embedded 320MHz DSP (GSM quad band, GPRS / EGPRS multislot Class 12, EDGE, UMTS Release 6, 7.2Mbps HSDPA, HSUPA 5.76 Mbps, MBMS baseband), 400MHz modem processor.
As this chip release in 2009, so this is one generation behind of current powerful Qualcomm Snapdragon cpu chip. What MSM stand for? Okay, it acronym for Mobile Station Modem, it a platform chipset solution that enable cost-effective mobile handsets with advanced capabilities that leverage 3G technology.
By the way, I not sure whether Aspen cpu do support Windows Phone 7 OS, but I don't think there will be upgrade for Aspen from SE. If you like to get a device with WP7, get a new phone. :)
Fyi, Qualcomm MSM7227 supported Google Android 1.6 and 2.1.