Users dealing with less than optimal hardware in many ways on XDA. There are plenty of software mods aimed at getting around the limitations of older hardware. One such limitation is not having quite enough RAM for the job.
As covered previously, one can create a swap partition for virtual RAM at the expense of performance. However, this is far more necessary on devices with less RAM, such as the Sony Xperia Arc. With 512 MB of RAM, things can get a little stickier than on the latest generation of devices.
Luckily, there’s an application by XDA Forum Member Patambiz aimed at helping. The application is called Swapper. Swapper allocates SD card space to the memory so that it can keep up with system demands. As Patambiz explains:
A swap file allows an operating system to use hard disk space to simulate extra memory.
In this case, the hard disk is being replaced by a SD card. To use, users simply download the application and follow the prompts within. Once done, a section of the SD card will be allocated to virtual RAM, allowing for higher RAM usage without crashing. As with enabling virtual memory on the SGS3, this virtual memory is far slower than actual RAM. However, it’s better than encountering errors.