Samsung Intercept has only 256 MB RAM. After System Apps and User Apps only 80-90 MB RAM is left free for users. If we install 20 or more Apps, we can easily consume another 40 MB RAM. That leaves us 40-50 MB RAM free. Also, processor does all functions - Application, Graphics, Floating Point Operations, Digital Signal Processing etc.
Less amount if free RAM and loaded CPU brings down the performance of Samsung Intercept. We have to make sure that we always keep at least 50 MB RAM free. Use Android Assistant and Super Box Apps from Android Market to free RAM time to time. Install only Apps that install on SD card. Move Apps to SD card. Clear Cache time to time using Apps like App Cache Cleaner from Android Market.
LG Optimus V on the other hand comes with 512 MB RAM. It has separate processors for Application, Floating Point Operations, Graphics handling and Digital Signal Processing. It also has separate Modem processor.
We Samsung Intercept owners take consolatiion in Physical slideout keyboard, better speaker and real glass touch screen.