Hardware
Why SSD speed matters in consoles and PCs, and when it does not
Fast storage changed loading times and game design. Here is how much SSD speed really matters, what to buy for a console upgrade and why capacity often beats speed.
When the current generation of consoles launched, fast solid state storage was one of the main selling points. Games loaded in seconds, and developers promised worlds that could stream in without hiding the wait. Years later it is worth asking how much SSD speed really matters, and what you should buy if you need more space.
From hard drives to SSDs
The biggest jump was never about the difference between a fast SSD and a very fast SSD. It was the move from spinning hard drives to any SSD. A hard drive has to physically move a read head, which is slow when many small pieces of data are needed. An SSD has no moving parts and answers requests almost instantly. That change shortens loading times and makes it possible to stream large game worlds smoothly.
What the consoles use
The two main consoles took different paths. The PlayStation 5 uses an internal drive rated at about 5.5 gigabytes per second of raw speed. The Xbox Series X uses a drive rated at about 2.4 gigabytes per second. Both are fast enough for the games designed around them, and the real difference in daily play is small.
Upgrading storage
If you run out of space, the options differ by console:
- PlayStation 5: you can add an M.2 NVMe drive in the expansion slot. It has to meet Sony's speed requirement, which is similar to the fastest PCIe 4.0 drives, and it should have a heatsink. Check the current official requirements before you buy.
- Xbox Series consoles: you can use a proprietary expansion card, which is simple but costs more per gigabyte, or an external USB drive for older games.
For most players, extra capacity is the upgrade that matters, and speed beyond the official requirement does not make games faster.
What about PC?
On a PC the story is similar. Modern drives are available in PCIe 3.0, 4.0 and 5.0 versions, and each step has a higher top speed. In everyday use and in nearly all games, the differences between a good PCIe 4.0 drive and a faster PCIe 5.0 drive are small. A technology called DirectStorage lets games load data more directly into the graphics card, which can reduce loading times and processor use in games that support it. Support is still growing, and gains depend heavily on the game.
If you copy very large files often, edit video or work with big datasets, a faster drive saves real time. For gaming, the better purchase is usually a solid mainstream drive with more capacity.
Practical advice
- Buy more space before you buy more speed. Game installs are large and keep growing.
- Make sure any drive you add meets the console maker's requirements.
- Keep your drive cool. Very fast drives get hot and can slow down when they overheat, which is why a heatsink is often required.
- Keep at least ten to fifteen percent of the drive free, because full drives can get slower over time.
- Back up your saves, because no drive lasts forever.
The bottom line
SSD speed matters most when you are moving from a hard drive. Above a certain level, extra speed has diminishing returns for games. If you are shopping, check the official requirements, pick a reputable brand and put your money into capacity.