The problem with this is that AMD really have not IMHO changed course with their Infinity Fabric. This still means that there are going to be issues with CPU memory clock speeds that will effect performance.
The concept of the Infinity Fabric is over 6 years now. This is old tech. It's not bad but it is also not game changing. IMHO AMD let Intel off the hook and now they are becoming competitive once again. When you are in business and you have an good advantage over your competing businesses, you do as much as you can to continue that. IMHO they did not.
Next about the X3D? Why am I going to pay a premium for a CPU that is essentially a 1 trick pony.
The biggest seller as I remember a few weeks ago was not the 5800X3D which was going for $450, it was the 5700X @65 watts. for 299 back then, It has gone down in price to around $250 last week.
People are getting more concern with their electric bill right now than having their computer be turned into another space heater.
and IMHO Wccftech is the Enquire of tech sites which I don't ever bother to look at them anymore.
If you want a solid tech site either guru3d.com or techpowerup.com
I second both of those sites. I also suggest notebookcheck.com (if it comes up not in your preferred language, click the flag at the top to change it) for detailed laptop info.
I use all four of those sites. TechPowerUp mainly for the GPU database.
Wccftech is fun because it posts most of the leaks, a lot of news stories every day (covering a wider range of topics than e.g. Guru3d does), and it has rowdy comment sections full of fanbois trolling each other. The new redesign is kinda shit though.
In theory, X3D is not a one trick pony. The Milan-X Epyc CPUs with 768 MB of L3 cache certainly aren't being used for gaming. In practice, most consumer/personal software doesn't know what to do with 96 MB of cache per core. At least for now.
Yes, the price is not right, but that goes for most of the Zen 3 lineup until recently. The $450 MSRP of the 5800X (no V-Cache) was pure milking, but obviously people paid that price. In some cases because the 5600X was hard to find.
Ideally, enlarged 3D caches will become a standard feature on all but the budget CPUs, without a significant premium. That isn't going to be the case with Zen 4 this year, but the gap between the release of normal and X3D parts could be shorter this time around. So the prices might drop in tandem, unlike the 5800X and 5800X3D. 5800X3D might just disappear off the market as stock runs out, like other infamous Ryzen CPUs.
AMD is
making improvements to Infinity Fabric, although they might be completely irrelevant to consumers. Also, it has been noted that the 5800X3D's cache improves the gaming performance of the CPU when using
slower memory. So if a 7800X3D was only +$50 over a 7800X, it could be worth shifting budget from the RAM to the CPU.