3DMark is a repeatable synthetic benchmark which can show a representation of expected gaming level performance for your system and you can compare with others using similar hardware to see how well your rig stacks up.
3DMark is a UL Benchmark and if you would like to try it out on your rig, you can pick it up here! 3DMark Download
3DMark Firestrike shows that the 7900X falls within a reasonable error margin for the synthetic gaming test.
Time Spy being a DirectX 12 benchmark shows a different synthetic gaming scenario. Here we see that the X299 Creation pulls a decent CPU lead but overall it balances out to a reasonably similar performance result when compared to the mainstream bench.
PCMark 10 is a popular benchmark form UL and gives a great repeatable measure on multiple aspects of normal PC Usage. If you would like to check out PCMark on your system give it a try here! PCMark 10 Download
PCMark shows that once again if you’re doing general productivity work you will be better served by a higher clocked mainstream platform rather than a heavy hitting HEDT which will likely consume more power.