Best parallels for WIN 7 on 32 bit MAC w/ OS 10.7.5

I have Parallels 7 running XP Home sp 3 on IMAC 32 bit 2 core duo, 3 gig memory limit, OS 10.7.5 and need to know best version of Parallels for my forced upgrade to WIN 7 sp 1. My professional software (tax preparation) is requiring an upgrade to WIN 7 (or above) now. I run a barebones computer with no frills like iPhone access or iMessaging or iCloud or such memory intensive frills.
Please guide me to the least power intensive version of parallels that runs WIN 7 efficiently in a desktop partition on the MAC. From the blurbs I see no reason to upgrade to //s 10. Would I do better (or can I still) upgrade from //s 7 to 8 or 9? Does 8 or 9 run well on a 32bit machine?

 

Hi Dan,

Please find the system requirements for Parallels Desktop version 8, 9 and 10 as listed below:
Parallels Desktop 10 for Mac : http://kb.parallels.com/122662
Parallels Desktop 9 for Mac : http://kb.parallels.com/117047
Parallels Desktop 8 for Mac : http://kb.parallels.com/116539

**Note** : Parallels Desktop 10 for Mac is the only version which is available for sale in Parallels Online store : www.parallels.com and the other versions of Parallels Desktop can be purchased from retailers.