Most SA gamers asking this already have a rough budget in mind and just need the trade-offs laid bare.
Quick Answer
For cinematic single-player games, M.2 NVMe is the right consumer choice: same speed class, cheaper, and natively supported. U.2 is an enterprise form factor most desktops do not even have a port for.
The SA value angle
In rand terms the cheaper option here usually frees up R1,000-R3,000 that moves the needle more on the GPU or monitor. Buy the part that suits cinematic single-player games, then put the saving where you will feel it.
When U.2 NVMe makes sense
U.2 suits servers needing hot-swap and high endurance. For cinematic single-player games on a desktop, M.2 gives the same real-world feel for less money and far simpler installation.
M.2 NVMe in short
A Gen4 M.2 SSD delivers 5,000-7,000 MB/s, plenty for cinematic single-player games, and slots straight onto the motherboard. No adapter, no extra cabling.
Buying it right in South Africa
In practice the right call comes down to your priorities and your wallet. Decide what matters most for nvme ssd, compare two in-stock options in your price band, and pick the one with the cleaner upgrade path. Spending a little extra is only worth it when the workload genuinely uses it; otherwise the saved rands do more good elsewhere in the build.
FAQ
Which is better for cinematic single-player games, M.2 NVMe or U.2 NVMe?
M.2 NVMe is the value default and covers cinematic single-player games well. Step up only if your workload is genuinely bound by what the other option improves.
Is U.2 NVMe worth the extra cost over M.2 NVMe for cinematic single-player games?
Usually only at the margins. For cinematic single-player games the cheaper option delivers nearly the same experience, so the premium is best justified by a specific, measurable need.
Does my platform support both options?
Check the motherboard and CPU first, since support varies. The right nvme ssd only helps if your board can actually run it at its rated spec.
10-15 percent of the total for the parts you touch daily, since a good nvme ssd pays off every session.