Not knowing what your exact system specs are, the obvious would be to increase RAM to 16 GB (that is the maximum configuration) and install an SSD.

@dellrk1101 

Inspiron 14 3467 DDR 2400 4 gigs.
The only update you can do is add an 8 gig Dimm IF it has only 1 slot.

inspiron 14 3467 laptop service manual

I suspect some models of this will have the 4 gigs soldered in.

12 gigs might work but its better to do dual channel 16 gigs if your model has 2 dimm slots.

Keep Your PC Fit and Healthy

It's a common-enough occurrence: You start out with a fast-moving, fresh computer but within months or years, you notice that it doesn't run or process data as quickly as it once did.

Part of the problem is simply data load: the more you put on your computer, the slower it runs. Debris, junk and clutter from the Internet make up another source of slow-down. Your computer can collect cookies, spyware and even viruses while online. And of course, with richer content comes larger file sizes. Together these factors can result in noticeable slow-downs.

What's the remedy? Basic maintenance, routine tune-ups and upgrades can all help keep your computer performing at top speeds.

PC Tune-Up Tip: Run Disk Cleanup

The Basics: Run Disk Cleanup to remove temporary files, get rid of optional components and empty the Recycle Bin.

Getting it Done: Launch Disk Cleanup from Start Menu > Accessories > System Tools.

Dell Automated PC TuneUp

For Dell PC owners, basic maintenance can be easy. All Dell Home PCs are available with Automated PC TuneUp, a tool that helps manage regular PC maintenance. Designate the tasks you need it to take care of, and choose how often you'd like these tasks to run. Out of the above tasks, Automated PC TuneUp can:

• Update your OS
• Defragment your hard drive
• Run Disk Cleanup

Additionally, Automated PC TuneUp can:

1. Update security settings: This setting keeps your security settings up-to-date and at an optimal level to balance security and performance.
2. Activate firewall protection: This setting helps you manage the use of a firewall to help protect your computer from outside attacks.
3. Create system restore points: This setting creates a snapshot of your computer's data that is safe to revert to in case of system failure.  

We recommend purchasing Dell Automated PC TuneUp if you'd like to take a hands-off approach to routine PC maintenance.