Let’s just tally a few, well documented, data points.
You will not see a drastic improvements. Only a very few flight sim users will need to upgrade by this time next year, and then only because their software is poorly optimized and run to the absolute limits.
We might realize much larger gains from software developers supporting DFR properly (~50% gain), removing the need for Parallel Projections (~50% gain), and multithreading their applications to the extent easily feasible (50% higher cap).
- Current RTX 2080 Ti and i9-9900k are adequate to reach point of diminishing returns with Pimax headsets, including 8kX.
- Higher resolution headsets take less GPU power to run, due to reduced supersampling.
So, you do not need a next gen GPU/CPU.
- Core clock and number of shader/texture/render units has the largest impact on VR framerates, with memory clock being near-negligible.
- Pre-binned RTX 2080 Ti cards have really high maximum clocks, approaching steady 2100MHz, compared with 1545MHz boost at the absolute most from factory specs.
- RTX 3080, releasing near end of this year, is projected to have slightly worse performance than an RTX 2080 Ti today.
So, next gen GPU will not drastically improve framerates.
- Single-thread CPU performance is the only metric under pressure, and only under highly specific (typically very unusually complex flight sim) conditions.
- Typical Intel CPU overclock has been around 6% lately (5.3GHz all-core vs 5.0GHz boost), with negligible hardware damage risk due to wide VCore specification.
- Typical Intel CPU generational improvement has been around 6% lately (5.3GHz i9-10900K vs 5.0GHz i9-9900k).
So, next gen CPU will not drastically improve framerates. Worse, CPU performance will improve 6% per 1.5 years, rather than the 50% typical for GPU constrained apps.