Battery usage
(2 SIM cards 1 of them on 3G, WiFi always ON, a few hours of VOIP calls, 30 minutes of Beach Buggy Racing, some browsing on IE and messaging via Skype, little usage of location services)
The result above from the 532 VS this result from the 640XL:
I guess the higher resolution on the 640 has taken it's toll on the results. It's for sure slower than the Snapdragon 400 configuration on the 73X and 830, and almost on par with just slight advantage over the Snapdragon 200 configuration on the 532 due to the lower resolution of the latter.