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On the other hand, when a game like Total War: Warhammer III is running, energy efficiency on the 13900K goes right out the window and you start getting power draw above 330W just for the processor. This allows the 13900K to eke out up to 68 more fps than the 7950X3D (or 532 minimum fps for the 13900K to the 7950X3D's 464 minimum fps), but it literally needs almost 2.5 times as much power to accomplish this. Underneath the integrated heat spreader (IHS), the Ryzen 9 7950X and Ryzen 9 7950X3D are very similar. You'll see a large central die on both chips, called the IO die, which contains an integrated graphics processor (IGP), the PCI Express controller, and other important components. AMD also includes two core complexes (CCXs) inside of each of these chips that hold the actual CPU cores and the cores' associated cache.
AMD Ryzen 9 7950X3D review: Team Red retakes the lead with
Testing a processor is arguably one of the most involved processes of any component I review because there are so many things to measure and quantify.When trying to come to an overall assessment of these chips' relative performance, it's better to look at the measurable performance gains between chips across different tests. This makes for a much more sensible average when all is said and done than averaging absolute scores where one CPU test with one very large result can badly skew a final average. Not the start we had expected. After numerous runs, we couldn’t get 7950X3D past the scores recorded by single-CCD 5800X3D. Multiple Intel chips are faster, too, and perusing AMD’s supporting documentation shows X3D a fair bit slower than rival Intel Core i9-13900KS.
AMD Ryzen 9 7950X 16 Core AM5 CPU/Processor - Scan AMD Ryzen 9 7950X 16 Core AM5 CPU/Processor - Scan
Looking into further games reveals 7950X3D doesn’t have the benchmark wow factor of 5800X3D. That’s because Intel’s latest Raptor Lake architecture has moved the gaming needle to the right, limiting X3D’s comparative gains. The first part is a 3D V-Cache performance optimiser driver that’s included in chipset software 5.01.03.005 or newer. According to AMD, ‘the driver evaluates the performance in real time and dynamically modifies the preferred cores seen by Windows based on workload preference for the 3D V-Cache CCX or the standard die.’ Run automatically for best performance, behaviour can be overridden by the user for manual tinkering. Though the focus ought to rightfully be on gaming performance first and foremost, let’s remember this is a 16-core, 32-thread chip empowered with the full might of the Zen 4 architecture.This asymmetrical L3 layout has consequences for dual-CCD chips such as the Ryzen 9 7950X3D and 7900X3D. Putting the right workload on the right CCD is one extra complication of the design. In practise, users want a seamless method of putting cache-heavy workloads – gaming being a prime example – on the 96MB L3 cache-infused CCD and small-footprint code on the regular CCD. It so happens AMD has an answer for this. The cache clearly does not help enough to give the Ryzen 9 7950X3D the performance advantage in any other CPU test in our suite. At the same time, its lower TDP and heat limit cause the 7950X3D to operate a bit slower and perform worse in almost every test except that one. The Ryzen 9 7950X is slightly faster in many of these tests, but, considering how much cheaper that chip is at list price, it’s a bit of a no-brainer which is the better value in this scenario. It's simply the best gaming CPU by performance you can buy on the consumer market and that's not likely to change for the rest of this processor generation, at the very least. In short, this makes the Ryzen 9 7950X3D not particularly competitive against any of Intel’s competing processors either. In almost every test, the Core i9-13900K is simply faster while also costing less. Gaming Tests
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