Is the price premium for a 9800X3D CPU worth it for longevity ?

Posted by Dagladou@reddit | buildapc | View on Reddit | 27 comments

[Long post, but not written by an LLM or AI-translated]

tldr : in my region, the 9800X3D is available for around 425€, 7800X3D is 75€ less and 270K Plus from Intel is 100€ less.
Ideally I'd want to spend a bunch on a new high-end CPU now, and keep it for years on end before I need to replace it. Do you think buying the more expensive 9800X3D worth it to get a few more years out of the CPU ?

Long version : I have to build myself a PC from scratch despite the awful current market, so I've decided to commit a solid amount of money to it in the hopes that I can just keep it for as long as I can, maintain it, and only have to spend additional money in like a decade.

My use case for the PC is primarily 1440p high gaming (prob capped at 120 FPS), mostly story-driven games rather than competitive, but I would also be doing occasional *light* code compilation (gamedev) and 3D modelling on it.

For the CPU, I figured I should go high-end, and there's three candidates : the Ryzen 7 7800X3D, the Ryzen 7 9800X3D and the Core Ultra 7 270K Plus, respectively 350€, 425€ and 330€ rn in France (without shady Aliexpress offers).
I have the budget for all 3 of course, and already decided on a GPU, although the extra money can get me better storage and stuff like that.

Thing is, I know gaming performance-wise the 9800X3D is undoubtedly the best, but I don't really care for any FPS above 120... What I really value is longevity, I'm trying to get the most bang for my buck over a 10 years period, while being able to play recent games.

I'm having a hard time figuring out which one is the best play !

Another important consideration is power consumption : electricity is pretty expensive, especially considering extended use, and tbh I cannot figure it out on that front either

The 7800X3D seems to be the most energy efficient, but I'm having trouble figuring out how much worse the 9800X3D is, since it seems to consume more on average, but at the same time since it's faster, shouldn't it go back to idle consumption faster as well ?
As for the Intel one, I know Intel has a reputation of being power hungry and the TDP is 125 W as opposed to 120 W for the ryzens, but I've seen some benchmarks where the 270K Plus was *more* efficient than the 9800X3D. I'm mostly confused now lol

For thermals, all 3 seem to be pretty darn close, with the 9800X3D in the lead ?

Lastly, looking at release dates the 7800X3D is from 2023, the 9800X3D is from 2024 and with the latest AMD architecture, and the 270K Plus just came out...

In short, the way I see it, pros of each are :

- 7800X3D is still a *very* good gaming CPU with 3DVcache and is very energy efficient

- 270K Plus is very close so far with the 9800X3D gaming performance-wise, better for productivity (tho it matters little in my case), is maybe (?) less power-hungry than the 9800X3D and is the most recent, being a current-year release

- 9800X3D is a **killer** for gaming performance with 3DVcache, is on the latest Zen 5 microarchitecture from AMD (being also more recent than the 7800X3D) and is possibly the chillest of the CPUs

There you have it, if the 270K Plus really is less power-hungry it sounds like a really compelling option, despite not being gaming focused (thus not the absolute fastest) and offering less upgradability
I also kinda want to turn my brain off and get the celebrated 9800X3D without second-guessing myself.

What is your opinion on all of this ? Any help or feedback would be greatly appreciated !!

Also, many thanks for reading thus far, and please excuse my syntax as I am not a native speaker