![]() Just look at the PC space today, many people actually don’t enable SMT, many people do. “In general, you have to look at simultaneous multi-threading (SMT): There are applications that can benefit from it, and there are applications that can’t. Mark Papermaster (in the same interview with Toms Hardware) also gave a brief quote regarding Zen and SMT-4. Oh – one last thing, and this concerns SMT-4 and its persistent rumors for inclusion in the Zen processor architecture. In the short term though, Ryzen 4000 will be on the AM4 platform, and will still be DDR4 and its new platform will be X670 and launch by the end of next year. Core counts for Ryzen 5000 are not locked down right now, and core counts aren’t just a matter of technical ability, but also market conditions too.īasically, if AMD feels Intel is hitting back hard with their own line of processors, AMD will potentially nudge the core counts higher. ![]() I was however told that Ryzen 5000 (which would be Zen 4) could be different, and apparently the socket will be called “AM5” for the next generation CPUs. ![]() Two of the people I spoke to said that to their knowledge, core counts for Ryzen 4000 would match Ryzen 3000, if only for things like platform reasons too (you can make of that as you will, but likely memory bandwidth would be one big example). I dug a little more into core counts for Ryzen 4000, as early this year a different source had told me core counts would remain consistent, albeit with IPC enhancements. ![]() As long as you keep that balance, I think we’ll continue to see that trend.” You have to be very thoughtful when you add cores because you don’t want to add it before the application can take advantage of it. “In the near term, I don’t see a saturation point for cores. “But we’re over that hurdle, now more and more applications can take advantage of multi-core and multi-threading.” “I don’t see in the mainstream space any imminent barrier, and here’s why: It’s just a catch-up time for software to leverage the multi-core approach,” Papermaster said. Mark Papermaster recently was speaking with TomsHardware on the subject of core counts and was asked his opinion on the number of CPU cores for Mainstream chips, his response was pretty interesting. This is particularly true given that the chips which typically find themselves into consumer CPUs aren’t such high quality as the chips which end up in server processors. Unfortunately, there’s a lot of tweaks to the Zen 3 pipeline which we’re not privy to, and so because of this it’s possible SKUs closer to the bleeding edge of the frequency curve might not benefit from the additional clock frequency. However, one source has confirmed that this is for the server parts (Milan) for Zen 3, and not necessarily something we’ll see on Ryzen 4000. I also did some more digging regarding clock frequency and I’ve now had 3 independent sources confirm that indeed 100-200MHz is what is being seen from early Engineering Sample chips. I was told that in mixed operations (extensively leveraging both Int and FP, Zen 3 seems to provide about 17 percent IPC gain on average – which is pretty crazy when you think about it. Before anyone starts jumping up and down, the average consumer workload will likely push Integer operations a lot more, but of course, a great number of applications will use a combination of both of these sets of instructions. Essentially the performance breakdown seems to be about 10 – 12 percent on average for Integer operations, but for applications extremely heavy in Floating Point Operations this figure could be closer to 50 percent.
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