Part List - Intel Core i5-14600KF
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No, a Z series mobo and a 14600K are the best option in the here and now if being able to upgrade in socket isn't appealing to you down the line.
The only alternative I would look at is the R5 7500F if you want to make a bet Zen 6 will be awesome I think that cpu goes for around 140 in Germany it's probably what you should have bought in the first place it's slower at everything vs the 14600k but a 9000X3D is already better than everything else at gaming and it or Zen6 X3D could be worth an upgrade in a couple years vs having to replace the whole platform in 3-4 with Raptorlake. I still think the Raptorlake cpu is the safe bet you are getting a very good gaming cpu in the here and now and nothing going forward is guaranteed with 9000X3D maybe never getting cheap enough to be worth dropping in I just wanted to at least throw this scenario in.
The other options is the core ultra series, you would be making a bet that at some point it is noticeably better than Raptorlake and it starts to beat the Am5 top cpu's at gaming if that is a half decade from now when everyone should be upgrading them to me that was still a waste of money lol but different people place different values on stuff I use one of the most stupid cpu for gaming and really enjoy it so living with the hardware is a lot different than looking at bar graphs with FPS on it.
All three scenarios have pros and cons with the main con of core ultra being quite a bit out of your desired less the 500 budget.
That is what I would be contemplating anyways but we can give you recommendations till we are blue in the face but the reality is everyone has biases so the best thing to do is research all the options that are being presented to you from hopefully unbiased reviewers like W1z and make a decision on what best fits your needs. We can recommend all sorts of different hardware but at the end of the day you are the one that is going to be living with it so while you are waiting watch videos of the games you play with similar hardware you are looking at etc, google the issues people have had with the hardware, and then when the time comes hopefully you have enough information to make an informed decision.