The 7900X3D might not match the performance of the 7800X3D in gaming scenarios.
The 7900X3D might not match the performance of the 7800X3D in gaming scenarios.
It's unclear if it will enhance things, but I recall it once topped the productivity charts with the 7800X3D and also performed well in games with the 7900. Essentially, it seems to be a versatile chip for those needing strong performance in both gaming and productivity.
It will consistently have fewer cores in the cache CCD. The scheduling issue switching between two CCDs is really problematic—it’s not the best performance anywhere. You might want to consider the 7800X for gaming and accept lower production quality, or go with a 7900/7950X and accept a slight compromise on gaming performance.
The ideal setup for contemporary titles centers on around eight processing units. The challenge with the 7900X3D is its layout splits the six cores into two groups, with only one containing the cache. This setup often forces developers to allocate six cores for performance or keep them separate, missing out on the benefits of a shared cache. If AMD had provided an 8+4 configuration with the cache on the 8th core, it would have made more sense. These high-core-count X3D models represent the first instance AMD offers unbalanced configurations, raising questions about how far they can go before performance suffers. Perhaps they lack four independent cores but have many six-core units to utilize. For gaming, the clear options seem to be the 7800X3D and 7950X3D, while the middle model is best avoided.
Question it. It only has six cores on the x3d side, making it a less powerful gaming CPU from a pure-core standpoint. Then the scheduler won’t perform as well because there’s no need to manage scheduling across the right cores. The 7950x3d also faces similar problems with the scheduler. If gaming is your main concern, the 7800x3d is the better choice by default.
It will just be seen as a mistake. Doesn’t really make sense, and I have no clue what AMD was considering. It should have been dropped and removed from the list of products to launch.
The 7900X3D might improve as a CPU if AMD develops methods to utilize its cores efficiently across both CCDs. Initially, certain titles gain more from speed than from caching, and the CCD with quicker cores should be prioritized for those games, making it faster than the 7800X3D right away. Secondly, if the secondary CCD managed system tasks during gameplay, the six cores could handle modern titles effectively—provided smart scheduling is implemented. As long as half of the cores remain idle, the 7900X3D would lag behind the 7800X3D. The key question remains whether AMD will allocate the needed resources. Right now I’m uncertain, but a future driver update might eliminate core parking and offer better optimization for Ryzen 9 X3D users.
You're facing challenges with several high-end titles and their performance differences. It seems the scheduling tool isn't ideal for your needs, but there are alternatives you can explore. TechPowerUp notes that 7950X3D lags only slightly behind 7800X3D in 1080p gaming, which might ease concerns if you have other hardware options available. The main bottleneck for 7900X3D appears to be its core requirements, which are tied to hardware limitations rather than software issues.
There seems to be some discussion around this topic recently. If the parking software had less overhead, it might work better. Checking reviews of the 7950x3d and 7900x3d shows they disable one CCD while the x3d performs well. However, keeping both enabled affects the scheduler too much. The 7900x3d appears to be a test version. We should evaluate its viability before deciding. It's not a joke, but it isn't the best choice. It still causes a lot of issues.
I have some reservations about much of what's being discussed here. It might not be entirely useless, but it leans toward a specific audience. If you're looking to invest around £600 for a CPU that handles both gaming and productivity, this option seems solid. The 7950X3D is beyond your budget, while the 7800X3D falls short in productivity. The main contender is the 7950X, which provides better overall performance but compromises on gaming. It's also more affordable (in UK prices) than the 13900K, which offers nearly identical results across all tasks. There doesn't seem to be another chip that matches or exceeds this balance of efficiency and cost for similar use cases. (Also, it performs reasonably well compared to non-3D alternatives.)