SSDs and Games: Loading, Streaming and DirectStorage Explained

This guide is for players who still keep games on a hard drive, anyone who has seen "SSD required" in a requirements list and wondered how seriously to take it, and readers curious what NVMe and DirectStorage actually mean for games. We will cover what storage really affects in a game, what it does not, and the details worth checking when you buy and install a drive.

Having lived through the era of swapping floppy disks mid-install, through CD-ROMs and then hard drives, it is easy to see a pattern: every time storage got faster, game design changed to take advantage of it. The same is happening now. Once developers can assume an SSD, games are built to depend on fast reads.

What storage does in a game

All of a game's assets live on your drive: maps, models, textures, audio and video. When needed, data is read into system memory, decompressed or processed by the CPU, and the parts the GPU needs are sent on to video memory. Storage speed governs the first stage of that pipeline.

What an SSD improves

• Load times: launching, loading saves, fast travel and level changes.
• Asset streaming: open-world games load the area around you in the background as you move. With slow storage, textures and models appear late.
• Traversal stutter: when a game has to wait for data before continuing, the image pauses briefly, especially at speed or when entering new areas.
• General responsiveness: booting, switching programs and installing updates are all quicker.

What an SSD usually does not improve

• Average frame rate: once rendering is under way, frame rate depends mainly on the GPU and CPU.
• Shader compilation stutter: some games compile shaders the first time they meet a new effect. That is mostly CPU work, so a faster drive helps little.
• Network latency: online lag has nothing to do with storage.

HDD, SATA SSD and NVMe SSD

The decisive step is moving from a hard drive to any SSD. Hard drives struggle with random reads, meaning many small files scattered across the disk, which is exactly how modern games read data. Between SATA and NVMe, or between NVMe generations, load-time differences in most current games are usually far smaller than the jump from HDD to SSD, and how much they matter depends on how a game handles loading.

What "SSD required" really means

When a requirements list explicitly says "SSD required", the game was usually designed around fast reads: fewer loading screens, seamless transitions, or streaming large amounts of data while you move quickly. Installed on a hard drive:

• The game may still launch, but loads take much longer.
• Textures and models may pop in late at speed, and the image may pause briefly.
• Some games show a warning when they detect a hard drive.

Treat "SSD required" as a real condition, not a polite suggestion.

What DirectStorage is

DirectStorage is a set of Windows APIs from Microsoft designed to let games read data from NVMe SSDs more efficiently. It tackles two problems:

1. The cost of many small requests. The traditional I/O path adds overhead on the operating system and CPU side when handling huge numbers of small reads. DirectStorage lets games submit requests in large batches, cutting that cost.
2. Decompression. Game assets are usually compressed, and the CPU traditionally did the unpacking. Later versions of DirectStorage added GPU decompression, freeing CPU time for other work.

A few caveats:

• The game has to support it. It is not a switch that speeds up every title.
• An NVMe SSD gets the full benefit; on other drives supported games still run, but gain less.
• It works on Windows 10 and Windows 11, and Microsoft has said Windows 11 includes additional storage-stack optimizations.
• How much it helps depends on each game's implementation.

Practical advice on capacity and installation

• Leave free space. Modern games are large and so are their patches. SSD write performance can drop when a drive is nearly full, so keep some room spare.
• Put demanding games on the SSD. If you have both an SSD and a hard drive, keep large, streaming-heavy games on the SSD and older or rarely played ones on the HDD. Most launchers let you create multiple library folders and move installed games between them.
• Mind the heat. Fast NVMe drives can get warm under sustained transfers. Many motherboards include M.2 heatsinks; remember to peel off any protective film.
• Check your M.2 slot. Some slots support only certain interfaces or share lanes with other slots. Read the motherboard manual before installing.
• Specs differ between drives. Whether a drive has a DRAM cache and which type of flash it uses can affect sustained write performance. Read-heavy gaming is less affected, but you may notice it when installing large games often.

Checking which drive a game is on

Many players are not sure which drive their games live on, especially when a PC has both an SSD and a hard drive. To check:

1. Open Task Manager's Performance tab. Each drive is listed on the left with its type (SSD or HDD), and some versions also show the interface, such as NVMe.
2. Search Windows for "Defragment and Optimize Drives". The "Media type" column shows whether each drive is a solid-state drive or a hard disk drive.
3. In your game launcher's library or storage settings, check which drive letter the game is installed to.

If a large, streaming-heavy game turns out to be on the hard drive, moving it to the SSD is often the cheapest and most direct improvement available.

Two ways to move to an SSD

When moving your system from a hard drive to an SSD, there are two common approaches, each with trade-offs:

• Clone the existing system. A cloning tool from the SSD maker or a third party copies everything to the new drive. Settings and programs are preserved, but so is any accumulated clutter or problem, and the new drive must be large enough for the existing data.
• Install fresh. Install Windows on the new SSD, then reinstall programs and games. It takes longer, but you get a clean system and a chance to shed long-standing issues.

Either way, back up important data first and make sure your motherboard can boot from the new drive. The old hard drive can stay on as storage for videos, photos and older games.

This is also a sensible moment to look at the rest of the system. If you are already opening the case, check whether the RAM is running in dual channel and whether dust has built up on coolers and filters, so one session covers several easy wins.

Common misconceptions

• "An SSD raises my frame rate." It mainly improves loading and streaming; average FPS usually stays the same.
• "NVMe makes loading several times faster than SATA." The big win is HDD to SSD; differences between SSDs are usually much smaller and game-dependent.
• "I need a DirectStorage SSD." DirectStorage is a software API, not a drive feature, and the game must support it.
• "It doesn't matter which drive a game is on." Games marked "SSD required" can feel much worse on a hard drive.
• "Filling the SSD to the brim is fine." Performance and wear management can suffer near full capacity, so leave headroom.

How this relates to FrameScope

Can I Run It mainly compares CPU and GPU tiers; for storage, check the official requirements on each game's page, reachable from the games list, which show install size and whether an SSD is required. If you are chasing stutter, read this alongside our RAM guide and pre-upgrade checklist, because loading stutter, low RAM and low VRAM are easy to confuse. Our methodology explains how verdicts are made.