[WCCF] AMD Zen 3 set to deliver >8% IPC with 200 MHz better clock. - Page 5 - Overclock.net - An Overclocking Community
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[WCCF] AMD Zen 3 set to deliver >8% IPC with 200 MHz better clock.

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post #41 of 67 (permalink) Old 10-14-2019, 08:05 AM
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Quote: Originally Posted by m4fox90 View Post
AMD’s issues with getting Zen 2 to run at rated speeds are pretty well documented at this point. I’m hardly some Team Blue fanboy.


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issues and updates for brand new stuff?

shocker.

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post #42 of 67 (permalink) Old 10-14-2019, 08:42 AM
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Quote: Originally Posted by guttheslayer View Post
You are not keeping up with the news. AMD presented their slide and it already show its Zen+, Zen 2 up to Zen 4.




You can clear see there is no Zen 2+. The fact that AMD include Zen+ inside means they are not omitting any "+" design at all, if there is any.
Ahh, my bad. I had assumed they were gonna keep to their set cadence on Zen.


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post #43 of 67 (permalink) Old 10-14-2019, 10:04 AM - Thread Starter
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Quote: Originally Posted by KyadCK View Post

That being said, I don't see why they would bother to do it.
I agree with this, and this is why I said there is no rush to push for Core count in 2021 instead of next year. 16C/32T is more than sufficient for mainstream space till then. The one that needed more cores is EYPC (server space) yet you dont see them push for >64C in Zen 3.


This lead me to strongly believe all Cores count will remain the same (except TR4 but still unlikely to go beyond 32).


So far I am seeing AMD has been pretty consistent with the core count ratio between EYPC and mainstream (ratio of 1:4, and it works well for modular design), and I really doubt that will change anytime soon

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post #44 of 67 (permalink) Old 10-14-2019, 01:56 PM
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Quote: Originally Posted by KyadCK View Post
CCXs must be disabled evenly, that's why. Else we would not have the drop from 64c to 48c.
Might not be an issue anymore. With the cache being no longer shared. They night be able to disable them unevenly.

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post #45 of 67 (permalink) Old 10-14-2019, 03:40 PM
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You guys think chiplet latency will go down with zen 3? Chiplet to chiplet.
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post #46 of 67 (permalink) Old 10-14-2019, 10:25 PM
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Quote: Originally Posted by ozlay View Post
ZEN 4 on AM5 "more pins" with PCIe5.0 and DDR5. SMT4 and 5nm?

Edit: Forgot USB 4.0
This needs to happen but by time it does well have USB 4.2 Gen 3x3 or some BS.

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post #47 of 67 (permalink) Old 10-15-2019, 01:52 AM - Thread Starter
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Quote: Originally Posted by reqq View Post
You guys think chiplet latency will go down with zen 3? Chiplet to chiplet.
The extra latency lies within chiplets as well, a multiple chiplet CPUs will have 2 layers of latency when communicating with the I/O


Improving the inter-CCX within chiplet (by merging them as 1 CCX) will reduce one layer of latency, which means it should bring performance improvement across all products of Zen 3, regardless if the CPU has 1 or 8 chiplet.


Hence to answer your question, no. The latency will remain between chiplet to chiplet but it will be still faster overall when compared to multiple chiplet Zen 2.

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post #48 of 67 (permalink) Old 10-15-2019, 07:53 AM
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Quote: Originally Posted by ozlay View Post
ZEN 4 on AM5 "more pins" with PCIe5.0 and DDR5. SMT4 and 5nm?

Edit: Forgot USB 4.0



There are too many 4's there. We should hope that USB 5.0 is out by then and at that point might as well go with an SMT5 solution so we have have five fives on the AM5 platform. Also Zen4 will be releasing as Ryzen 5000 series anyway so nailed it there.
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post #49 of 67 (permalink) Old 10-15-2019, 04:09 PM
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This is a very interesting discussion - lots of info coming out that I wasn't aware of.

Do we think 5.0ghz is possible on Zen 3, seeing as Zen 2 is hitting 4.6ghz+ already?


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post #50 of 67 (permalink) Old 10-15-2019, 09:15 PM - Thread Starter
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Quote: Originally Posted by speed_demon View Post
This is a very interesting discussion - lots of info coming out that I wasn't aware of.

Do we think 5.0ghz is possible on Zen 3, seeing as Zen 2 is hitting 4.6ghz+ already?
If early sample give 200MHz boost it mean Zen 3 will cap at 4.6-4.8 GHz, dont get your hope too high, it will be at least Zen 4 before we wish it can overclock to 5GHz. By then AMD would far exceed Intel if they are still on skylake dying micro-arch in mid 2021.


Intel is taking too slow, too long before they even bring something new to the table.

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