AMD Ryzen 7 5800X3D uses AMD 3D V-Cache technology to stack L3 cache chips, increasing the processor L3 cache capacity to 96MB. Although it is also a 7nm process, it uses 3D packaging technology to increase the cache, so that this processor has Quite a powerful game performance improvement.
The 5800X3D process can be said to be a major change. First, the height (Z-Hight) of the CCD die of the 7nm process Zen 3 architecture is reduced, and the 64MB L3 cache L3Die of the same 7nm process is stacked on the top through AMD 3D V-Cache technology. The final die height is the same as the original Ryzen processor, so both the processor’s thermal cap and heatsink can be used.
↑ AMD 3D V-Cache stacking architecture.
AMD at 81mm2 41mm stack on CCD wafer area2 The L3Die chip with a large area is connected to the upper and lower chips by the direct Copper-to-Copper Bound through the Hybrid Bond technology, and the TSV through silicon technology allows the direct transmission of signals and power supply between the chips.
↑ CCD and L3Die information.
↑ Direct copper-to-copper bound.
AMD’s 3D V-Cache Hybrid Bond technology has a higher 9u bump pitch internal density, which is much higher than C4 130u or Micro Bump 50u, which means a higher transfer frequency between the chip and the cache width, and lower power consumption performance.
↑ Comparison of internal bump density on chip.
↑ AMD 3D stacking allows die of different areas to be connected by Hybrid Bond.
This technology allows the 5800X3D to achieve a 15% performance boost in 1080p games, but at the expense of clock and overclocking playability.
5800X3D can get more game performance than i9-12900K. If you consider the game cost performance, 5800X3D is cheaper but has stronger game performance.
Although increasing the L3 cache can improve the performance of 1080p games, the improvement of CPU computing, rendering, creation, and overall computer performance is very limited, and the performance is slightly lower than that of the 5800X due to the reduced clock. Please refer to 5800X3D Test Report。
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