[Android Q&A, Help & Troubleshooting] DMcCunney:
I don't think you need a swap file, and I believe Android handles that internally. There's a Linux kernel the hood, and Android is essentially a Linux system. It just differs in the way things are set up from a desktop Linux distro.

The A1050 has 16GB of storage, of which 12 are available to the user. That gives me headroom, so I don't have to resort to something like Link2SD, which lets you carve out an ext4 slice on an external card and mount that as additional app storage. (And Link2SD requires a rooted device to work in any case.) It has a GB of RAM, and that's been adequate. While Android may have a number of processes running in the background, most of them don't take a lot of RAM. I've never seen an out-of-memory condition on my devices. The issue I ran into was not enough space in the part of the internal filesystem allocated to app storage to hold everything I wanted to install.

The full size USB port was a pleasant surprise. Dual SIM card slots sounds like yours has phone capability. That's not something I would want. It probably intended to allow connectivity when you don't have a Wifi hotspot nearby. My tablet is specifically set up to be used in local mode, working on locally stored data. It's online only to check for new versions of installed apps , and to check email on occasion when traveling. I wouldn't care about FM radio, either.

Another pleasant surprise was the microSD slot. Previous Azpen models maxed out at 32GB cards. This was a hardware thing - they used SDHC slot hardware, and that has a 32GB volume size limitation. To get higher capacity, the slot has to be SDXC.

The published specs indicated the same 32GB volume limit as other Azpen tablets. But I had a 64GB microSD card bought for another device that turned out not to support it. I popped it into the A1050, it saw if, and offered me the choice of importing it as internal storage or using it as external. Importing it would mean formatting it as ext4, the default Android filesystem, and it would be mounted by the tablet as additional internal storage. I wanted to be able to pop the card and read it in something else, and transfer files to/from it without using MTP. I chose External, it worked for a bit, and then told me a had a 64GB external card. I've seen Azpen's published specs being incorrect before, so I wasn't all that surprised they were wrong, but this was a pleasant surprise.

Front and rear facing cameras were also nice. The rear facing camera is "in a pinch", and not something I'd try to do serious photography with, but is works well enough if I just want a quick shot of something.

Azpen has a bewildering variety of models, and I do wonder who they think the audience is. Had I known going in I couldn't root the A150, I would have opted for the A1048. That has similar specs, but runs Lollipop instead of Marshmallow, and should be rootable.

The nice thing is that the tech gets steadily cheaper. The A1050 cost me $80, which is a decent price for a 10" tablet with the specs it has. A non-Azpen model would likely cost twice that. (And Azpen's list price for the A1050 is $299.95. I got mine from Micro Center who is an Azpen retail partner and apparently gets very good wholesale pricing from Azpen.)

What apps are you running?