I better come out and confess right off the bat here, as [[link]] I wouldn't technically buy [[link]] these chips. But's only because I already have a Ryzen 9 7900 in my AM5 test PC and it's an absolute peach of a CPU. Fast, energy-efficient, and easy to cool, it breezes through any game I care to run on that machine.
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But if I was heading into the Prime Day deals to find a CPU for a full system upgrade, I'd be sorely tempted by either of the above and it's not just because they're super cheap compared to their launch MSRPs.
What you've got are two versions of the same processor, the Ryzen 9 7900X. That is basically the same one as the chip I have but with a higher power limit and clock speeds. However, the second one of them comes equipped with AMD's secret gamer sauce: 64 MB of 3D V-cache bonded to one of the CCD chiplets.
This extra L3 cache can make a huge difference to lots of games, helping to lift the minimum frame rate right up, and ensuring gameplay is as smooth as it can possibly be.
Every PC gamer knows that the best gaming CPU you can buy is the Ryzen 7 7800X3D but that only has eight cores, 16 threads. So why is that better than the Ryzen 9 7900X or 7900X3D? It comes down to the fact that the latter processors have six cores per CCD, whereas the 7800X3D has eight cores in its single CCD.
Threads generated by games are typically allocated to a [[link]] single CCD chiplet because having threads trying to access another chiplet's cache can hurt performance. So yes, the 7800X3D is the better gaming chip but trust me when I say that there's really nothing wrong with the gaming chops of the Ryzen 9 7900, 7900X, or 7900X3D.
I regularly test multiple games on the 7900-powered PC and at no point have I ever thought "Gosh, these games could really do with a better CPU behind them." Sure, the likes of the 7800X3D will always get higher numbers in the usual gamut of benchmarks but in real-life gaming, you're not going to be disappointed.
This is especially true when you consider the prices and the fact that should you need to use your PC for more than just gaming, you've got a CPU that can handle any application you like.
And if 24 threads isn't enough for you, then you can get the 32-thread Ryzen 9 7950X3D monster for $490 at Amazon, though it's often cheaper than that. Not me, though. I'm a genuine fan of AMD's six core chiplets, be it the single die Ryzen 5 7600X or the dual die Ryzen 9 7900, 7900X, and 7900X3D.
I'm especially a fan of CPUs not crashing in games, too. Ahem, Intel.
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