Quick Answer
For MMOs and live-service games in SA, M.2 NVMe is the right storage over U.2 — it shortens zone loads and patch installs in titles like Final Fantasy XIV and Destiny 2, fits any modern board cable-free, and costs less. A 2TB M.2 Gen4 (around R2,400) holds several large live-service installs with room for updates.
Why MMO players want fast storage
Live-service games are large and patch constantly — a single MMO can pass 100GB and update weekly. An M.2 Gen4 drive at around 7,000 MB/s speeds zone transitions, asset streaming in busy hubs, and the frequent patch installs that eat evenings on a slow drive. M.2 and U.2 share NVMe speed, but M.2's cable-free fit and lower price make it the obvious MMO pick.
Capacity planning for live-service libraries
MMOs grow over time as expansions stack up, so capacity matters as much as speed. A 1TB M.2 fills quickly once you run two or three live-service titles; a 2TB drive (around R2,400) is the comfortable floor, and most boards take a second M.2 to expand later. U.2 offers no advantage here and complicates a clean build, so stick with M.2 for an MMO machine.
How to choose for an SA build
For nearly every desktop and gaming PC sold locally, M.2 is the answer — motherboards from B650 to X670 carry two to four M.2 slots, and drives like the WD Black SN770 1TB (around R1,300) or a 2TB Gen4 unit (around R2,400) cover gaming and creative work. U.2 needs an adapter or a workstation board, adds cost, and gives no real-world speed benefit for home use. Buy U.2 only if you specifically need enterprise drives in a server chassis.
FAQ
Does an SSD help MMO load times?
Yes. An M.2 Gen4 drive speeds zone loads, hub streaming and patch installs in live-service games versus a slower drive.
How much storage for live-service games?
Start at 2TB (around R2,400). MMOs are large and patch often, so a 1TB drive fills fast once you run a few titles.
Is U.2 worth it for an MMO rig?
No. M.2 matches its NVMe speed, costs less and fits cleanly. U.2 is an enterprise format with no MMO benefit.
Before you buy
For an MMO rig, start at a 2TB M.2 Gen4 drive so big installs and weekly patches do not run you out of space.