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post #691 of 2415
Quote:
Originally Posted by BulletBait View Post

The rumor mill is also churning about 2.8 base, 3.2 turbo.
Maybe at Seeking Alpha. rolleyes.gif

AMD isn't going to launch its highest Summit Ridge part below 3 GHz. That's a mindshare disaster.
post #692 of 2415
Quote:
Originally Posted by superstition222 View Post

Quote:
Originally Posted by BulletBait View Post

The rumor mill is also churning about 2.8 base, 3.2 turbo.
Maybe at Seeking Alpha. rolleyes.gif

AMD isn't going to launch its highest Summit Ridge part below 3 GHz. That's a mindshare disaster.

I could see them doing it to stay within a certain TDP on a particlar part.
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post #693 of 2415
Sure, it wouldn't surprise me if they were to release a server-oriented chip with a low clock rate to maximize the performance-per-watt. 14nm LPP likes to have low clocks for efficiency, especially with a high-density design library.

My Macbook Pro (Q4 2013) has a 22nm 4960HQ CPU (2.6 GHz with a higher turbo) and it got a Cinebench 15 single core speed of 138. The multithread is a bit low at 651 but not bad considering the clocks and that it's a mobile chip.
Edited by superstition222 - 10/16/16 at 8:10pm
post #694 of 2415
The clock speeds are low due to shorter pipelines than FX but creates more epeen. And thus we should expect lower overclocks as a return for those shorter pipelines. We probably will not be seeing any 8ghz OC's from ZEN
post #695 of 2415
Quote:
Originally Posted by superstition222 View Post

Sure, it wouldn't surprise me if they were to release a server-oriented chip with a low clock rate to maximize the performance-per-watt. 14nm LPP likes to have low clocks for efficiency, especially with a high-density design library.

My Macbook Pro (Q4 2013) has a 22nm 4960HQ CPU (2.6 GHz with a higher turbo) and it got a Cinebench 15 single core speed of 138. The multithread is a bit low at 651 but not bad considering the clocks and that it's a mobile chip.

A lot will depend on how competitive it can be perf/watt/cost I'd think. If it has a certain clock it does the same work for less energy invested, that will probably be the target they aim for. The Vishera's all seem to have distinct voltage walls - early 8 cores were at 4.7 ghz generally and my latest 2 chips initial voltage wall is above 4.9 ghz.

Quote:
Originally Posted by ShrimpBrime View Post

The clock speeds are low due to shorter pipelines than FX but creates more epeen. And thus we should expect lower overclocks as a return for those shorter pipelines. We probably will not be seeing any 8ghz OC's from ZEN

Cold tolerance could be quite limiting , but interpreting the early rumblings has led me to belive it may be able to clock similarly to the Vishera on water, time will tell.
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post #696 of 2415
Yes time will tell. It will be interesting to see how 14nm FinFet responds to voltage changes and cooling. (and de-lidding) I for one will probably wait to do any real heavy overclocking until we see some numbers and such. I don't want to break processors and be the guy to tell people what not to do with 14nm tech.

ZEN will be closely studied by many people. It's going to be a pretty big release imo. The will sell because of everyone's interest.

I might even wait for a stepping revision and skip the B2 -C2 ?D2? revision and go for the ?D3? stepping instead.
post #697 of 2415
Quote:
Originally Posted by ShrimpBrime View Post

The clock speeds are low due to shorter pipelines than FX
Some posters at Anandtech have speculated that Zen will have a longer pipeline than Piledriver and said longer pipelines are needed in general to deal with today's process limitations.

As far as clocks, the biggest limitation will likely be the process node not the design of the cpu.
post #698 of 2415
Quote:
Originally Posted by superstition222 View Post

Some posters at Anandtech have speculated that Zen will have a longer pipeline than Piledriver and said longer pipelines are needed in general to deal with today's process limitations.

As far as clocks, the biggest limitation will likely be the process node not the design of the cpu.

Of course longer pipelines are needed for SMT.
post #699 of 2415
Will Zen support the latest AVX instructions? I want to wait for Zen but lately a 6700k has been tempting. Will Zen be "up-to-date" so to speak?
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post #700 of 2415
Quote:
Originally Posted by geoxile View Post

Will Zen support the latest AVX instructions? I want to wait for Zen but lately a 6700k has been tempting. Will Zen be "up-to-date" so to speak?

It does support AVX2, however the performance will be significantly lower than on >= Haswell, due the 2x128-bit structure. Haswell and everything newer (2x256-bit structure) will annihilate Zen when in applications heavily utilizing AVX2.
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