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https://www.techpowerup.com/3235 ... 3d-series-at-gaming
AMD Says Ryzen 9000 Series Won't Beat 7000X3D Series at Gaming
AMD's upcoming Ryzen 9000 "Granite Ridge" desktop processors based on the "Zen 5" microarchitecture won't beat the Ryzen 7000X3D series at gaming workloads, said Donny Woligroski, the company's senior technical marketing manager, in an interview with Tom's Hardware. The new "Zen 5" chips, such as the Ryzen 7 9700X and Ryzen 9 9950X, will come close to the gaming performance of the 7800X3D and 7950X3D, but won't quite beat it. The new processors, however, will offer significant generational performance uplifts in productivity workloads, particularly multithreaded workloads that use vector extensions such as VNNI and AVX512. The Ryzen 7 7800X3D remains the fastest gaming desktop processor you can buy, it edges out even Intel's Core i9-14900KS, in our testing.
Given this, we expect the gaming performance of processors like the Ryzen 7 9700X and Ryzen 9 9950X to end up closer to those of the Intel Core i9-13900K or i9-14900K. Gamers with a 7000X3D series chip or even a 14th Gen Core i7 or Core i9 chip don't have much to look forward to. AMD confirmed that it's already working on a Ryzen 9000X3D series—that's "Zen 5" with 3D V-cache technology, and is sounds confident of holding on to the title of having the fastest gaming processors. This doesn't seem implausible.
Intel, in its recent "Lunar Lake" architecture reveal, went deep into the nuts and bolts of its "Lion Cove" P-core, where it claimed that the core posts a 14% IPC increase over the "Redwood Cove" P-core powering "Meteor Lake," which in turn has similar IPC to the "Raptor Cove" P-core powering the current 14th Gen Core processors. Intel intends to use "Lion Cove" P-cores in even its Core Ultra "Arrow Lake-S" desktop processors. Given that 3D V-cache gave "Zen 4" a 20-25% boost in gaming performance, a similar performance boost to "Zen 5" could make the 9000X3D series competitive with "Arrow Lake-S," if Intel's claims of a 14% IPC gain for the "Lion Cove" P-core holds up. That said, AMD in its interview stated that 3D V-cache may not add the kind of gaming performance gains to "Zen 5" that it did to "Zen 4."
AMD is building the "Zen 5" 8-core CCD on the 4 nm foundry process, which is expected to have the TSV foundation for stacked 3D V-cache memory, but there's an ace up AMD's sleeve. AMD hasn't ruled out the possibility of "Zen 5" having an expandable dedicated L2 cache. To a question by Tom's Hardware on whether the L2 cache is expandable on "Zen 5," AMD replied "Absolutely, if you get to finer-grain 3D interconnect. So we're at 9-micron through silicon via (TSV) pitches today. As you go down to, you know, 6-, 3-, 2- micron and even lower, the level of partitioning can become much finer-grained," It's important to note here, that this is not a confirmation on AMD's part. AMD didn't define the specific pitch required for an L2 cache.
If true, what this means is that in the 9000X3D series, the company could give the CCD a larger 3D V-cache chiplet, which not just expands the on-die L3 cache from 32 MB to 96 MB, but also increases the sizes of the dedicated L2 caches of each core. The "Zen 5" microarchitecture sees each core get 1 MB of dedicated L2 cache, which the new 3D V-cache chiplet could expand.
The L2 cache operates at a higher data-rate than the shared L3 cache, and uses a faster SRAM physical media. The next-gen 3D V-cache chiplet could hence feature two distinct kinds of SRAM—the 64 MB L3 SRAM that expands the on-die 32 MB L3 SRAM; and eight L2 cache SRAM units to expand each of the eight on-die L2 caches.
The L2 cache is expected to play a major role in gaming performance for next-gen processors, and Intel has significantly expanded it for "Lion Cove" P-cores with both "Lunar Lake" and the upcoming "Arrow Lake." On "Lunar Lake," the four P-cores each have a 2.5 MB of dedicated L2 cache. On "Arrow Lake," the same P-core is expected to get 3 MB of dedicated L2 cache. So AMD probably understands the importance of fattening not just the L3 cache, but also the L2.
The rumor mill is abuzz with reports of AMD bringing in the Ryzen 9000X3D series within 2024, with some sources pointing to a Q4-2024 debut, which should time them alongside Intel's launch of the Core Ultra "Arrow Lake-S" desktop processors.
机翻：
AMD公司高级技术营销经理Donny Woligroski在接受Tom’s Hardware采访时表示，AMD即将推出的基于“Zen 5”微架构的Ryzen 9000“Granite Ridge”台式机处理器在游戏工作方面无法击败Ryzen 7000X3D系列。新的“Zen 5”芯片，如Ryzen 7 9700X和Ryzen 9 9950X，将接近7800X3D和7950X3D的游戏性能，但不会完全超过它。然而，新处理器将在生产力工作方面提供显著的世代性能提升，特别是使用矢量扩展(如VNNI和AVX512)的多线程工作负载。Ryzen 7 7800X3D仍然是你能买到的最快的游戏桌面处理器，在我们的测试中，它甚至超过了英特尔的酷睿i9-14900KS。
有鉴于此，我们预计Ryzen 7 9700X和Ryzen 9 9950X等处理器的游戏性能最终将接近英特尔酷睿i9-13900K或i9-14900K。拥有7000X3D系列芯片，甚至第14代酷睿i7或酷睿i9芯片的玩家没有太多期待。AMD证实，它已经在开发Ryzen 9000X3D系列——即采用3D V缓存技术的“Zen 5”，听起来有信心保持拥有最快游戏处理器的称号。这似乎并不令人难以置信。
英特尔在其最近的“月球湖”架构披露中，深入研究了其“狮子湾”P核的细节，声称该核的IPC比为“流星湖”供电的“红木湾”P核心增加了14%，而“流星湖》的IPC与为当前第14代核心处理器供电的“猛禽湾”P内核相似。英特尔打算在其Core Ultra“Arrow Lake-S”台式机处理器中使用“Lion Cove”P核。考虑到3D V缓存使“Zen 4”的游戏性能提高了20-25%，如果英特尔声称“Lion Cove”P核的IPC增益为14%，那么与“Zen 5”类似的性能提升可能会使9000X3D系列与“Arrow Lake-S”具有竞争力。也就是说，AMD在其采访中表示，3D V-cache可能不会像“Zen 4”那样为“Zen 5”增加游戏性能
AMD正在4 nm的代工工艺上制造“Zen 5”8核CCD，预计它将为堆叠式3D V高速缓冲存储器奠定TSV基础，但AMD有一个王牌。AMD并没有排除“Zen 5”拥有可扩展专用L2缓存的可能性。对于Tom’s Hardware关于L2缓存是否可以在“Zen 5”上扩展的问题，AMD回答道：“当然，如果你能实现更细粒度的3D互连。所以我们今天的硅通孔(TSV)间距为9微米。当你深入到6微米、3微米、2微米甚至更低时，分区级别可以变得更细粒度。”这里需要注意的是，这并不是AMD的确认。AMD没有定义二级缓存所需的特定间距。
如果这是真的，这意味着在9000X3D系列中，该公司可以为CCD提供一个更大的3D V缓存小芯片，这不仅将片上L3缓存从32 MB扩展到96 MB，而且还增加了每个核心的专用L2缓存的大小。在“Zen 5”微体系结构中，每个核心都有1 MB的专用L2缓存，新的3D V缓存小芯片可以扩展这些缓存。
L2高速缓存的数据速率高于共享的L3高速缓存，并且使用更快的SRAM物理介质。因此，下一代3D V-cache小芯片可以采用两种不同的SRAM——64MB L3 SRAM，扩展了片上32MB L3 SRAM；以及八个L2高速缓存SRAM单元，以扩展八个片上L2高速缓存中的每一个。
二级缓存预计将在下一代处理器的游戏性能中发挥重要作用，英特尔已将其大幅扩展到“狮子湾”P核，包括“月球湖”和即将推出的“箭湖”。在“月亮湖”上，四个P核各有2.5 MB的专用二级缓存。在“Arrow Lake”上，相同的P核预计将获得3 MB的专用二级缓存。因此，AMD可能理解增肥L3缓存以及L2缓存的重要性。
关于AMD将在2024年推出Ryzen 9000X3D系列的报道甚嚣尘上，一些消息人士指出，该系列将于2024年第4季度首次亮相，届时英特尔将推出Core Ultra“Arrow Lake-s”台式机处理器。 |
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发表于 2024-6-15 19:34
