For a new gaming PC, I would choose a 2TB SSD if the budget allows, use 1TB for a smaller rotating library, and consider 4TB when you keep many large games, mods or recordings installed. A 500GB drive can work for a tightly managed setup, but it leaves less flexibility once Windows, applications and updates share the space.
These are buying recommendations, not game requirements. The right capacity comes from the files you will actually keep. Add their sizes, include working space, and choose a drive that fits both the total and your computer.
01Choose a capacity for the way you play
The useful question is how much you want installed at the same time. A large account library does not need to live entirely on the PC, while a handful of demanding games can occupy more room than dozens of smaller titles.
| Capacity | Who I would consider it for | Main trade-off |
|---|---|---|
| 500GB | A constrained budget with a small, carefully managed library. | Less space for large installs and temporary work. |
| 1TB | A few main games, limited recordings and willingness to uninstall unused titles. | Library management becomes part of the routine. |
| 2TB | A balanced new PC with several larger games and general applications. | Still needs a plan if video or mods grow quickly. |
| 4TB or more | A larger always-installed library, substantial mods or local content creation. | Higher capacity should serve a real workload rather than sit unused. |
I would not call 2TB compulsory. If choosing it means cutting hardware needed for your actual game performance, a suitable 1TB SSD with room to expand can be the better complete build. Check whether that later expansion is genuinely possible before relying on it.
02Build a storage budget from actual installations
List your must-keep games, Windows and applications, personal files, mods and recordings. Use current installed sizes where possible and the launcher or publisher's storage guidance for games you have not installed. Keep those two kinds of figures distinguishable.
For example, Larian lists 150GB available SSD space for Baldur's Gate 3. That is one game's published requirement, not a universal average. Language packs, downloadable content, patches and optional high-resolution assets can change what your own library occupies.
Do not calculate the number of games on a drive by dividing its advertised capacity by a single favourite game's size. That ignores everything outside the games, treats different installations as identical and leaves no room for work performed during updates.
I would separate permanent favourites from games you are happy to rotate. That small decision often changes the capacity you need more usefully than debating the fastest available SSD interface.
03Use a calculation instead of a game-count promise
The following example uses hypothetical decimal gigabytes. None of the allocations is a Windows requirement, a measured game collection or a recommended universal reserve.
For that particular plan, a 1TB drive is too small. A 2TB option provides more room, but the example does not prove that every gamer needs one. A smaller active library could change the decision; a growing video archive could move it toward 4TB instead.
Use consistent units when comparing totals. A marketed 1TB is 1,000,000,000,000 bytes, which is about 931GiB when divided by 1,073,741,824 bytes per GiB. The smaller-looking number in Windows is largely a unit convention, not evidence that the seller removed part of the drive.
Partitions, recovery data and formatting can also affect the space available for files. Check the actual usable volume before filling it, rather than treating every advertised byte as free game-library capacity.
04Leave working space for patches and normal use
A game update's download size is not always the full temporary-space requirement. Installation can involve unpacking or rebuilding existing data. The exact process depends on the launcher and game, so read its warning instead of assuming that a small download needs only a small amount of free space.
Windows and applications also create caches, temporary files and update data. Microsoft's storage usage settings show categories such as Installed apps, Temporary files and System & reserved. Inspect what is actually growing before deciding that another game caused the problem.
I would leave a meaningful working allowance based on the largest updates and tasks I expect. There is no single free-space percentage that guarantees every game will patch successfully or every SSD will perform identically.
Remove an unused installation or move personal content, then retry the task. A one-off unusually large update does not automatically justify replacing the drive.
If your normal library cannot coexist with routine updates and work, the capacity is probably mismatched to your current usage. Plan expansion rather than repeating emergency cleanup.
The useful test is practical: can you install your next intended game and complete ordinary maintenance without deleting something you still need? If the answer is repeatedly no, revise the budget.
05Choose SSD storage for games that need it
Capacity and drive type answer different questions. A large hard disk can hold many files, while an SSD avoids the mechanical seek behaviour of a hard disk. Some modern games explicitly require SSD storage; check the exact game's requirements before moving an active installation onto an HDD.
CD Projekt Red's published Cyberpunk 2077 requirements from Update 2.0 onward specify SSD storage, for example. A drive having enough free capacity does not establish that it meets the required storage type.
For a compatible new desktop, I would start with an NVMe SSD for Windows and active games. A suitable existing SATA SSD can still be useful. Match drive interface, physical size and supported slots to the motherboard rather than assuming every M.2-shaped device is interchangeable.
A larger capacity is not a guaranteed FPS improvement, and an advertised sequential read speed is not a promise of a particular loading-time reduction. Choose enough suitable storage first, then compare the actual drive's relevant testing, warranty and cost.
Our gaming PC checklist puts SSD selection alongside motherboard support and other compatibility checks. Extra terabytes are useful only when the drive fits and works in the system.
06Recordings and mods can change the answer
A gaming PC used for content creation needs a separate storage calculation. Long recordings, editing projects, proxies and exported videos can outgrow the installed games. Do not bury those files inside a general allowance if you already know you will produce them.
For a hypothetical constant total recording bitrate of 50Mbps, one hour is about 22.5GB in decimal units: 50 megabits per second multiplied by 3,600 seconds and divided by eight. Real recordings depend on the configured video and audio bitrates, duration, variable-rate behaviour and container overhead.
Ten hours at that illustrative rate is roughly 225GB before those variations. That is why recording habits can justify more capacity even when the game library stays unchanged. Use a short sample at your actual recording settings to estimate your own workflow.
Mods need their own allowance too. A mod manager may retain downloads, extracted files and separate profiles, so the final game directory is not always the entire modding footprint. Read the manager's storage behaviour before assuming its library uses one copy of everything.
07One large SSD or several drives?
One sufficiently large SSD is straightforward to manage. Separate system, game and recording drives can help organise work and make expansion easier, but they are not mandatory for every gaming PC. Two partitions on one physical drive also do not become two independent devices.
Before buying another M.2 drive, check the motherboard manual for supported lengths, slot interfaces, lane-sharing behaviour and cooling provisions. Some slots affect other connections. A spare connector visible on the board is only the start of the compatibility check.
For a tight new-build budget, GrokStar Games' budget build planning guide explains why optional initial storage can be reduced while preserving the capabilities needed now. I would use that approach only when the smaller drive still accommodates a realistic first library.
External storage can be useful for archives and transfers. Running games from it depends on the device, connection, launcher and title requirements. A large external HDD does not automatically substitute for the internal SSD a game expects.
08Manage space before replacing hardware
Open Settings → System → Storage and inspect the largest categories. Review Cleanup recommendations carefully, then uninstall games you no longer use through their launcher. Check personal Downloads and Videos before treating them as disposable temporary content.
Steam provides library management under Settings → Storage, including moving supported game installations to another configured drive. Prefer the launcher's documented move process over dragging game folders blindly between disks. Confirm the game launches from the new location afterward.
Back up important saves and creator projects before reorganising storage. Cloud-save support varies by game and does not protect every local file. A copied installation is not necessarily a copied save, especially when the save lives elsewhere in the user profile.
I would avoid deleting arbitrary Windows folders or repeatedly clearing caches just to keep a permanently undersized drive usable. Cleanup helps identify waste; it should not become a substitute for enough capacity to do normal work.
09Gaming storage questions
Is 1TB enough?
Yes, when your active games, applications and working allowance fit comfortably. It is less convenient for a large always-installed library or regular video production. Add your actual files before deciding.
Is 2TB overkill?
Not if it prevents constant reinstalling or accommodates work you already do. It can be unnecessary spending for a small library when money is needed elsewhere in the build.
Do I need a separate Windows SSD?
No. One suitable drive can hold Windows and games. Separate drives are an organisational and expansion choice, not a universal gaming requirement.
Does RAM count toward storage capacity?
No. RAM is working memory and SSD or HDD capacity stores persistent files. Buying more RAM does not give you more space for installed games.
Will a second drive protect my saves?
Not automatically. Backups require additional recoverable copies and a plan for restoring them. Merely moving the only copy to another drive changes its location.
10Buy enough for the library you want to keep
My default for a balanced new gaming PC would be a suitable 2TB SSD. Choose 1TB when the actual library fits and the saving matters; choose 4TB or more when games, mods and recording work justify the space.
Before ordering, total the active files, add a deliberate working allowance, and confirm the physical upgrade options. That produces a more reliable purchase than a promise about how many unspecified games fit on a drive.