Quick Answer
For strategy and sim games at R25,000 in Gauteng, prioritise CPU single-thread and RAM: a Ryzen 7 7700 (or 7600) with an RTX 4060 Ti, 32GB DDR5 and a 1TB NVMe. That keeps Civilization VII turn times short, Cities: Skylines II at 60 fps mid-map, and large Total War battles fluid at 1440p.
Strategy and sim games are CPU and RAM games
Late-game turns in Civ, dense Cities: Skylines II saves and 10,000-unit Total War battles stress the CPU and memory far more than the GPU. So spend on the Ryzen 7 7700 (8 cores, R6,500) and 32GB DDR5-6000 (R2,200), then pair an RTX 4060 Ti (~R8,000). A 1TB NVMe slashes the long load and autosave times that plague big simulation saves.
Why 32GB and fast storage matter most here
A sprawling Cities: Skylines II city or a modded Stellaris galaxy can push past 16GB RAM, where stutter and swapping begin. 32GB removes that wall. Turn times in Civilization VII and end-game Stellaris ticks shrink with stronger single-thread performance, which is exactly where the Ryzen 7 7700 helps. The GPU mainly drives resolution, so 1440p High is the comfortable target.
SA buyer and upgrade notes
AM5 leaves a clean upgrade lane to a future Ryzen chip, the part most worth upgrading for strategy fans chasing shorter turns. Buy locally for in-country warranty. A 1440p panel at 100Hz+ is ideal: strategy does not need 165Hz, but the resolution gives you more visible map and UI at once.
FAQ
What matters most for strategy and sim PCs?
CPU single-thread performance and RAM. Turn times, simulation ticks and large battles are CPU and memory bound, so a Ryzen 7 7700 with 32GB DDR5 matters more than a top-tier GPU at this budget.
Is 32GB RAM needed for city builders?
For large Cities: Skylines II saves, heavily modded Stellaris or detailed Anno cities, yes. 16GB causes stutter as the simulation grows; 32GB keeps big saves stable.
Will this build shorten Civ turn times?
Yes. The Ryzen 7 7700's strong single-thread speed and 32GB RAM keep late-game Civilization VII turns short, where weaker chips slow to a crawl on huge maps.
Pro Tip
strategy and sim builds, put your save folder on the NVMe and keep at least 8GB RAM free. On this rig that keeps late-game Civ turns and big Cities: Skylines II saves snappy.