Monday, September 7th 2020
AMD 4th Gen Ryzen "Vermeer" Zen 3 Rumored to Include 10-core Parts
Yuri "1usmus" Bubliy, author of DRAM Calculator for Ryzen and the upcoming ClockTuner for Ryzen, revealed three pieces of juicy details on the upcoming 4th Gen AMD Ryzen "Vermeer" performance desktop processors. He predicts AMD turning up CPU core counts with this generation, including the introduction of new 10-core SKUs, possibly to one-up Intel in the multi-threaded performance front. Last we heard, AMD's upcoming "Zen 3" CCDs (chiplets) feature 8 CPU cores sharing a monolithic 32 MB slab of L3 cache. This should, in theory, allow AMD to create 10-core chips with two CCDs, each with 5 cores enabled.
Next up, are two features that should interest overclockers - which is Bubliy's main domain. The processors should support a feature called "Curve Optimizer," enabling finer-grained control over the boost algorithm, and on a per-core basis. As we understand, the "curve" in question could even be voltage/frequency. It remains to be seen of the feature is leveraged at a CBS level (UEFI setup program), or by Ryzen Master. Lastly, there's mention of new Infinity Fabric dividers that apparently helps you raise DCT (memory controller) frequencies "slightly higher" in mixed mode. AMD is expected to debut its 4th Gen Ryzen "Vermeer" desktop processors within 2020.
Source:
Yuri Bubliy (Twitter)
Next up, are two features that should interest overclockers - which is Bubliy's main domain. The processors should support a feature called "Curve Optimizer," enabling finer-grained control over the boost algorithm, and on a per-core basis. As we understand, the "curve" in question could even be voltage/frequency. It remains to be seen of the feature is leveraged at a CBS level (UEFI setup program), or by Ryzen Master. Lastly, there's mention of new Infinity Fabric dividers that apparently helps you raise DCT (memory controller) frequencies "slightly higher" in mixed mode. AMD is expected to debut its 4th Gen Ryzen "Vermeer" desktop processors within 2020.
53 Comments on AMD 4th Gen Ryzen "Vermeer" Zen 3 Rumored to Include 10-core Parts
4500X - 4 cores
4600X - 6cores
4700X - 8 cores
4800X - 10 cores
4900X -12 cores
4950X - 16 cores
would be very balanced. I would definitely get the 10 core version if true. I wonder if we’ll see a 10 core Rembrandt APU?
Question remains, would it run on b450 am4?
www.techpowerup.com/267358/amd-backpedals-zen-3-support-coming-to-b450-and-x470
www.techpowerup.com/267775/msi-confirms-zen-3-support-on-its-amd-400-series-chipset-motherboards-with-16mb-roms
The rumored sharing of L3 amongst an 8-core CCX/D for Vermeer benefits 4/6/8-core SKUs, because like the 3300X all those SKUs would have uniformly low core-core latencies. But the chiplet model would potentially throw this supposed 10-core into the awkward void where the single CCD advantages end but the dual CCD binning advantage wouldn't extend to cover it, unless they artificially lower the 8-core clocks and boost the 12-core clocks even more. Between a 3600 and 3900X, you can allocate the "better" six-core CCDs to the higher end part, but AMD doesn't make and won't be making a 5-core Vermeer so all the bad 5-core CCDs would have only one place to go. And that's without discussing exactly how 5 cores could be distributed asymmetrically in a CCD, even if L3 is shared.
And I think 16 cores is max for AM4. We may see the Max core count go up once we are on DDR5 on the desktop.
None of these tasks are memory limited at all, and need grossly more CPU power. There's a reason why some people bought the Threadripper 2990wx. Now with that being said: these heavy tasks are niche (and even then: 3d modeling is both single-thread and multi-thread bound. Single-thread bound on editing, multi-thread bound on rendering. So some 3d modelers are opting for Intel i9 for superior single-thread speeds ).
timercores from AMD in a special edition package :laugh:More cache per thread is what made Zen2 so much better than Zen+, so I suspect this 10-core part will be great. The only downside may be that each 5-core chiplet is low quality silicon so overclocking headroom and FCLK tuning options may be worse than the best single-chiplet SKU.
(Disclosure: disappointed Ryzen owner.)
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Latency is much worse on Threadripper 1950x (Zen1) by every benchmark I've seen, L2, and L3 latencies were improved by Zen+ and Zen2. Absolute latency to DDR4 was also improved.
Its not enough to make me upgrade off of my 1950x, but I was quite surprised at how quickly everything improved. Especially with a 16-core in AM4 / standard motherboards. (Threadripper on Zen2 / Zen3 might be out of my budget now, but high-end AM4 is looking pretty solid now).
Zen2 also improved the CCX communications with their centralized routing chip, such that NUMA is no longer required. (NUMA still improves Zen2 speeds, but its not like Threadripper 1950x where NUMA is basically required if you care about latency at all)The 128-bit to 256-bit AVX jump between Zen+ to Zen2 was as big as the Sandy-Bridge -> Haswell jump for Intel. It was quite significant for the workloads that utilize AVX.