Which PC Build would you choose out of these two?

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Which PC build would you choose from the below for heavy competitive online shooters for lowest latency, highest FPS and highest fps dips? Both are same exact same price.
1)
-Motherboard: MSI Z790 EDGE Wifi, 16+1+1 power stage at 90A
-CPU: i9-13900KF
-GPU: MSI Trio X 4090
-RAM: DDR5 Kingston Fury Beast 5600MHz 16GBx2 unknown CL
-EKWB AIO 360mm liquid cooling (older model), top mounted
-2 Front Case Fans Intake, and 1 Rear Case Fan Exhaust.-Case: H700 based on coolermaster design

OR

2)
-Motherboard: MSI MPG Z790 Carbon Wifi, 19+1+1 power stage at 105A
-CPU: i9-13900KF
-GPU: TUF 4080 OC
-RAM: DDR5 Kingston Fury Beast 6000MHz CL36, 36-38-38-80, 16GBx2
-EKWB EK-Nucleus AIO CR360 Lux (newer model), top mounted
-2 Front 140mm Case Fans Intake, 2 Bottom Noctua 140mm intake fans, and 1 Rear Case Fan Exhaust.
-Case: Fractal Meshify 2

Considering thermal performance and heavy gaming performance, which one would you choose? (both are Same exact price)
 
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What I am trying to point out are 4 things, the 4080 build has:
-A mobo that can deliver more power to the i9-13900KF,
-also has a better AiO cooler for CPU,
-2 extra 140mm case fans for increase airflow,
-DDR5 with slightly faster speed and tighter timings
 
4090 is a more powerful card so it should easily have the best performance in the majority of games (and higher fps = lower latency), BUT it does depend on which games you're playing and what resolution/settings you plan to use, since the memory speed has a bigger impact when you're CPU bottlenecked and for 13th gen both PCs have slow RAM (slow if you're going to be heavily CPU-bottlenecked most of the time).

If you're competitive gaming (i.e. you're not just playing competitive games, you're actually competitive) then I'd suggest checking out some benchmarks so that you know where the bottleneck is likely to be and where best to spend your money.
the z790 motherboards have compatibility lists for DDR5 kits and for those two MSI mobos these are the only two compatible DDR5 kits available in my market. Nothing over 6000MHz. Not sure what you mean by bottlnecks when I choosing the top of the line cpu and gpu available. Just because the DDR5 is 6000MHz and not 7200MHz does not make it a bottleneck in Battlefield 2042 or warzone. The 7200MHz+ are very hard to find and be compatible, mostly scalped, and very expensive.
 
The second option has a CARBON mobo which has 19+1+1 DIRECT phase stages at 105A, whereas the first option has the cheaper EDGE WIFI mobo which has 16+1+1 MIRRORED phase stages which means using phase controllers to try and replicate the effect of 16 direct phase stages. This affects how clean and stable the voltage is reaching the CPU which is very important even for non-overclockers. This is why I expected more engagement on a platform such as this. Throttling due to fluctuating voltage can hurt a competitive player in a CPU-bound online game. Hence I do not find it an easy choice between the two builds.
 
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I wish but 7800X3D is not available unless I order online and assemble myself. Definitely better value and efficency.

The bottom line: Yes I will definitely get Higher Max FPS and higher Avg FPS on the 4090 build. But it is the Dips and microstutters that I am worried about when a player randomly jumps in front of my screen with sudden explosions and war effects. There is a chance I might get lower dips on the 4090 build than on the 4080 build, and based on over 20 years of experience I believe these dips can make or break for a competitive player. My FPS is most likely to always be at 144Hz or 240Hz which is my screen refresh rate no matter what build I choose, but the FPS dips will vary between the two, in my opinion. You need two things out of a quality motherboard: 1. VRMs that deliver stable and clean voltage to CPU under prolonged heavy load, and 2. Good thermal design that keeps the VRMs cool under heavy load so that they would not throttle the voltage delivered to the CPU. Having enough power delivered by the chipset to the CPU is not enough, it should be maintained cool to ensure stable high voltage and boosting clocks. That's why higher end mobos use different material to keep their VRMs cool as opposed to the mobo used in the 4090 build above.

Here is an insightful graph that shows the impact of properly cooled VRMs in a high-end mobo on the CPUs performance, even if the CPU's temperature on itself is kept low.

Here is an easy and informative short read on VRMs and how their power rating, build quality, and temperature can tremendously impact the CPU's performance:
A Short Guide To Motherboard VRMs [The Secret To CPU Overclocking
 
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In heavily CPU bottlenecked scenarios there are two things that definitely do impact the lows: 1. CPU clock speed
And to ensure stable and boosted CPU clock speeds when you need them, you need high quality and properly cooled VRMs which are more available in Build#2 above than in Build #1. Assuming all other variables such as RAM and CPU cooling are normalized. I rest my case.
 
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