Find vendors that sell reasonably priced prebuilt PCs in your country.
Choose your price ranges, I'd recommend at least 2 price ranges. Sort by "Price Low to High".
Your graphics card is the most important component in any gaming PC, it has the biggest impact on performance.
Always pick the PC with the fastest GPU you can afford. Check out the GPU comparison chart here.
RAM: 16GB is recommended, 8GB still does the job. 3000Mhz RAM is recommended for AMD's CPUs, and 2666Mhz is good
enough for Intel's CPUs. Don't choose the more expensive 3200Mhz RAM because 3000Mhz CL15 and 3200Mhz CL16 have
the same absolute latency.
Tips:
Prebuilt PC brands don't really matter, they're assemblers, not manufacturers. They don't make the core
components like GPUs or CPUs. They simply buy parts from the real makers (Intel, AMD, NVIDIA, XFX, ASUS,
Sapphire, Gigabyte, Zotac, etc.) and put them together, just like building with Lego. A higher price usually
just means a bigger profit margin for them, not a better PC.
Don't overspend on CPUs. Games tend to be more forgiving of older CPUs than of previous-generation GPUs, so even
a CPU that's several generations old should still be okay.
At 1440p/4K Ultra settings, the demand on the GPU increases significantly, making it the primary bottleneck in
gaming performance, not the CPU (GPU is used 100%, but the CPU is only used about 50%). Spending extra on a more
expensive CPU usually results in minimal FPS gains and diminishing returns.
Stay away from terribly overpriced Cybertron, CLX SET, NZXT, MSI, Acer, MainGear, Digital Storm, and Build Redux
PCs. Those companies leverage their successful marketing in order to upcharge their PCs.
Don't overspend on hardware, people often forget they'll need money for games too. They focus too much on the
specs and forget that games themselves can be a large expense.