How to Expand PC Storage: External SSD vs HDD for Gaming

TL;DR: Adding external storage is the easiest way to boost your capacity without opening your PC case. Choose an external SSD for high-speed gaming and an HDD for massive, budget-friendly file archiving.

The Storage Crisis: Why You Need More Space

Modern gaming and high-resolution media have created a massive appetite for digital space. A single AAA title can easily exceed 150GB, and if you are a content creator, 4K video files can eat through a terabyte in a single afternoon. For many users, the internal drive is already near capacity, and the thought of opening a desktop tower or a laptop chassis to swap out components feels intimidating or technically impossible.

This is where external solutions shine. Instead of dealing with the complexities of SATA cables, M.2 slots, or thermal paste, you can simply plug a device into a USB port and start moving files immediately. Whether you are trying to keep your OS drive lean or simply need a place to dump your massive collection of movies and photos, external storage provides a seamless path to more capacity. For more on this, see our guide on How to Expand PC Storage Without Upgrading Internal Drives.

External SSDs: The Speed Demon for Gamers

If your primary goal is to play games directly from the external drive, an external SSD (Solid State Drive) is your only real choice. Because SSDs use flash memory rather than spinning platters, they offer significantly faster read and write speeds. This translates to much shorter loading screens and a smoother experience when playing open-world games that stream assets in real-time.

When shopping for an external SSD, pay close attention to the connection type. A drive that utilizes USB 3.2 Gen 2 or Thunderbolt can offer speeds that rival some internal drives. While they are more expensive per gigabyte than traditional hard drives, the performance boost for active applications and gaming is well worth the premium. They are also incredibly durable, as they lack moving parts, making them perfect for users who might travel with their data. For more on this, see our guide on How to Expand PC Storage Without Upgrading Internal Drives.

External HDDs: The King of Mass Storage

Not every storage need requires lightning-fast speeds. If you are looking to store a massive library of movies, music, or long-term backups, an external HDD (Hard Disk Drive) is the most cost-effective solution. HDDs use mechanical platters that spin at high speeds to read and write data, which makes them slower than SSDs but significantly cheaper for high capacities.

You can easily find external HDDs in the 4TB to 18TB range at a fraction of the cost of a comparable SSD. While you wouldn't want to run a modern, high-fidelity game off a spinning hard drive due to potential stuttering or long load times, they are perfect for 'cold storage.' This refers to data that you need to keep safe and accessible, but don't need to interact with every single second of the day. For more on this, see our guide on How to Expand PC Storage Without Upgrading Internal Drives.

Choosing the Right Connection: USB vs. Thunderbolt

The biggest bottleneck in external storage isn't always the drive itself; it is often the cable and the port you plug it into. If you buy a high-end NVMe external SSD but plug it into an old USB 2.0 port, you are essentially putting a jet engine on a bicycle. You will never see the speeds you paid for.

For the best experience, ensure your PC has USB 3.1 or USB 3.2 ports. If you are a professional working with massive video files, look for Thunderbolt 3 or 4 compatibility, which provides massive bandwidth. Always use the cable that comes with the drive to ensure you are getting the maximum rated speed. If you are using an external HDD, even a standard USB 3.0 port is usually more than enough to handle the mechanical limits of the drive.

Optimizing Your Setup for Performance

Once you have your new drive, there are a few steps you can take to make the most of it. For Windows users, you might want to change your default installation path for new apps and games. This ensures that when you download something from Steam or the Epic Games Store, it goes straight to your massive external drive rather than clogging up your primary C: drive.

Additionally, keep an eye on your drive's file system. For most modern Windows PCs, NTFS is the standard, but if you plan on using your external drive between a Mac and a PC, you might consider exFAT. While exFAT is more compatible, NTFS offers better features for data integrity and file permissions on Windows systems. Always remember to 'Eject' your drive safely through the software before physically unplugging it to prevent data corruption.

Comparison Table

Drive TypeCapacity RangeAvg. SpeedBest Use Case
External SSD (NVMe)500GB - 4TB1000MB/s+AAA Gaming, Video Editing
External SSD (SATA)500GB - 2TB500MB/sGeneral Storage, Older PCs
External HDD (Portable)1TB - 5TB80 - 160MB/sPhotos, Movies, Backups
External HDD (Desktop)8TB - 22TB150 - 250MB/sMassive Archives, NAS Backup
USB Flash Drive32GB - 512GBVariableSmall File Transfers

Frequently Asked Questions

Can I run games directly from an external hard drive?

Yes, you can, but it is not recommended for modern AAA titles. An external HDD will result in much longer loading screens and potential in-game stuttering. For gaming, an external SSD is a much better option.

Will an external SSD be as fast as my internal drive?

It depends on the connection. If you use a high-speed NVMe external SSD with a USB 3.2 Gen 2 or Thunderbolt port, the performance can be very close to an internal drive. Standard SATA-based external SSDs will be slower but still much faster than HDDs.

Is it safe to leave an external drive plugged in all the time?

Generally, yes. Modern external drives are designed to handle being plugged in. However, if you are using an HDD, be careful not to bump or move the drive while it is spinning, as this can cause physical damage to the platters.

How do I move my Steam games to an external drive?

Steam has a built-in feature for this. You can go to Settings > Storage, add your external drive as a new library folder, and then select your games to 'Move' them to the new location without re-downloading them.

What is the difference between USB 3.0 and USB 3.2?

USB 3.2 is essentially the successor to USB 3.0 (also known as USB 3.1 Gen 1). USB 3.2 offers much higher bandwidth and different connection types, which allows for the extreme speeds seen in modern external SSDs.

Why is my external drive slower than advertised?

This is usually due to the port or the cable. If you plug a high-speed drive into a slow USB 2.0 port, or use a low-quality cable, the speed will be throttled. Always check your port's specifications.

Ready to Compare Live Prices?

Browse real-time hard drive and SSD prices from Amazon, sorted by price per TB.

Compare Disk Prices → Shop on Amazon →

This site is supported by paid affiliate links. When you buy through links on our site, we may earn a commission. Learn more