Thursday, August 25th 2022
AMD Ready with Zen 4 3DV Cache Chiplet, Expects to Repeat 5800X3D Magic Versus Raptor Lake
AMD is allegedly ready with a working "Zen 4" chiplet that has stacked 3D Vertical Cache (3DV cache) memory, which supplements the on-die L3 cache, and is found to massively improve gaming performance. "Moore's Law is Dead" reports that the Zen 4 + 3DV Cache chiplet will be used with various Ryzen 7000X3D SKUs, as well as special EPYC "Genoa" SKUs.
The 3DV Cache deployed with the "Zen 4" chiplet is a second-generation to the one on the "Zen 3 + 3DV cache" chiplet, and AMD has worked on a number of bandwidth and latency improvements, so it performs in-sync with the generationally-faster on-die L3 cache of the "Zen 4" chiplet. Unlike the CCD below it that's built on TSMC N5 (5 nm EUV), the L3D (the stacked die with the 3DV cache) is possibly be built on an older node, such as N6 (6 nm), since it only contains a slab of memory and doesn't warrant N5. "Moore's Law is Dead" reports that AMD expects to repeat the magic of the 5800X3D when it comes to gaming performance, and expects Ryzen 7000X3D processors to dominate Intel's 13th Gen "Raptor Lake" processors. This was echoed by another reliable source, greymon55.
Sources:
Moore's Law is Dead (YouTube), greymon55 (Twitter)
The 3DV Cache deployed with the "Zen 4" chiplet is a second-generation to the one on the "Zen 3 + 3DV cache" chiplet, and AMD has worked on a number of bandwidth and latency improvements, so it performs in-sync with the generationally-faster on-die L3 cache of the "Zen 4" chiplet. Unlike the CCD below it that's built on TSMC N5 (5 nm EUV), the L3D (the stacked die with the 3DV cache) is possibly be built on an older node, such as N6 (6 nm), since it only contains a slab of memory and doesn't warrant N5. "Moore's Law is Dead" reports that AMD expects to repeat the magic of the 5800X3D when it comes to gaming performance, and expects Ryzen 7000X3D processors to dominate Intel's 13th Gen "Raptor Lake" processors. This was echoed by another reliable source, greymon55.
29 Comments on AMD Ready with Zen 4 3DV Cache Chiplet, Expects to Repeat 5800X3D Magic Versus Raptor Lake
Zen 3's IF sweet spot was 2000, but no one could reach it: so 1900 became the next best thing for 3800 DDR4 that was easier to achieve
The above suggestions for 2800/5400 being common and 3000/6000 being the sweet spot, would fit and make sense - and that extra bandwidth would absolutely explain a lot of zen 4's performance gains
The question is. Is the IF 3000Mhz for Zen4 max or the sweet spot since according to the picture below, sweet spot is not the max you can do with a Zen CPU according to AMD.
The 4200+ for example only happens on the APU models, or without the IF being 1:1