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AMD Ryzen 4000 Zen 3 samples cannot reach 5.0 GHz; 16 core successor to the Ryzen 9 3950X in development

Started by Redaktion, May 20, 2020, 12:24:30

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Redaktion

AMD Ryzen 4000 Zen 3 samples have leaked, showing that at least 8 core and 16 core Vermeer processors are in development. They are both tracking the clock speeds of their Zen 2 precessors though, suggesting that the Ryzen 4000 Zen 3 series may fail to reach 5.0 GHz.

https://www.notebookcheck.net/AMD-Ryzen-4000-Zen-3-samples-cannot-reach-5-0-GHz-16-core-successor-to-the-Ryzen-9-3950X-in-development.465992.0.html

Thinkpad Fan



MHK Curb

Crank higher clockspeed require more power to draw and more heat to remove. With higher transistor density it will sacrifice clockspeed because heat density just too much and causing resistance to transistor for getting electrical current. Also, the future still era belong to multi threaded workload because if it do corectly it run very fast and efficient. So it pointless to crank clockspeed high to the sky because its not wort the effort to get there. Its better to increase ipc and reduce memory bottleneck inside processing part

Dharan


Valantar

1: The reported chips are engineering samples. Clockspeeds as such can't be compared to shipping Zen 2 CPUs. Equivalent Zen 2 ES chips had noticeably lower clock speeds than this. What does this tell us? That Zen 3 chips will likely clock higher than Zen 2, but not by a whole lot, and we can't be sure either way.

2: Who cares about 5GHz?

3: Clock speed increases aren't especially important as long as the arch update brings a significant IPC increase along with it, which Zen 3 is reported to do. If it is indeed 15% faster than Zen 2, then a Zen 3 chip at, say, 4.3 GHz will perform the same as a Zen 2 chip at 4,95 GHz. And of course Zen 2 never reached those clock speeds.


NoTeamJustFacts

Why do we honestly care about clock speeds anymore?  They are meaningless when the is a differential in instructions per clock.  We need a new measure as a standard, none of this, clock speed bs.  My 2920xm overclocks to 5Ghz ... It's a meaningless measure.

Valantar

Quote from: NoTeamJustFacts on May 20, 2020, 20:03:41
Why do we honestly care about clock speeds anymore?  They are meaningless when the is a differential in instructions per clock.  We need a new measure as a standard, none of this, clock speed bs.  My 2920xm overclocks to 5Ghz ... It's a meaningless measure.
What you're asking for is called a benchmark.

All joking aside, clock speed is a fundamental feature of any processor, so saying it's meaningless is a bit harsh. Saying it's meaningless as a like-for-like performance comparison tool on the other hand, is entirely correct. Though this has been true for decades. Remember when AMD used to name their Athlons by the roughly equivalent frequency a Pentium would need to match its performance? That was IPC.

Nicholas Schweik

Well you're both kinda wrong it is clock speeds multiplied by ipc to get single threaded performance intel has slightly higher clock speeds (10%) while amd has 20% higher ipc which puts their single threaded performance higher than intels not to mention multi core which they completely slay intel at.

Valantar

Quote from: Nicholas Schweik on May 22, 2020, 03:01:44
Well you're both kinda wrong it is clock speeds multiplied by ipc to get single threaded performance intel has slightly higher clock speeds (10%) while amd has 20% higher ipc which puts their single threaded performance higher than intels not to mention multi core which they completely slay intel at.
How on earth does that in any way contradict what I said?

Advocatus Diaboli

Well no s***, they're A0 samples!
Meanwhile even Zen 2 refresh will hit 4.8 GHz (3900XT), so I'll eat my goddamn hat if the top end Zen 3 chip(s) won't come with the prestigious 5.0 GHz boost clock.

That was some shitty reporting to be honest.

Valantar

Quote from: Advocatus Diaboli on May 26, 2020, 23:24:48
Well no s***, they're A0 samples!
Meanwhile even Zen 2 refresh will hit 4.8 GHz (3900XT), so I'll eat my goddamn hat if the top end Zen 3 chip(s) won't come with the prestigious 5.0 GHz boost clock.

That was some shitty reporting to be honest.
It is entirely possible that the architectural improvements of Zen 3 over Zen 2 makes it slightly more difficult for it to clock as high. Not to mention of course that the 4.8GHz number you mention is the (rumored) single-core boost of a (rumored) mid-cycle refresh of what is now a very mature piece of silicon. Expecting a brand new product to match those clocks on the same process is as such quite optimistic. But it is also not necessary as long as the IPC increase meets expectations and clocks are reasonably high.

dosadsakd

Quote from: Nicholas Schweik on May 22, 2020, 03:01:44
Well you're both kinda wrong it is clock speeds multiplied by ipc to get single threaded performance intel has slightly higher clock speeds (10%) while amd has 20% higher ipc which puts their single threaded performance higher than intels not to mention multi core which they completely slay intel at.
Get your facts right man. Zen 2 has 5-10% better IPC vs Skylake. Not 20%.

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