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[OC3D] AMD's Zen will have a "greater than 40%" IPC improvement over Excavator, says Lisa Su - Page 70

post #691 of 841
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Originally Posted by SpeedyVT View Post

I believe a significant performance margin is lost to the cTDP features. Plus that's pretty good on a laptop.

Stilt isn't bound by simple things like cTDP tongue.gif
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post #692 of 841
Quote:
Originally Posted by DylRicho View Post

interesting thing it might debut is the 576-ALU Iris Pro 580 in an LGA1151 processor.
Well that says a lot about the early Core i7s, doesn't it...
I'd say it says a lot about AMD's engineers. the 4th gen of a terrible uarch surpassing the first gen of an excellent uarch that is now in it's 6th generation.
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post #693 of 841
thumb.gif
Quote:
Originally Posted by EniGma1987 View Post

Stilt isn't bound by simple things like cTDP tongue.gif

Unfortunately he is, but I know what you mean. He did break the 15 cTDP lock on the laptop go it up higher, but 95 watt TDP is what I'm interested in knowing.thumb.gif
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post #694 of 841
Quote:
Originally Posted by 7850K View Post

I'd say it says a lot about AMD's engineers. the 4th gen of a terrible uarch surpassing the first gen of an excellent uarch that is now in it's 6th generation.

If Zen can get within shouting distance of Broadwell's IPC and then close the rest of the performance gap with brute force, it's going to get really interesting. Especially if Samsung can get their 10nm process out on time for Zen+.
post #695 of 841
Quote:
Originally Posted by 7850K View Post

I'd say it says a lot about AMD's engineers. the 4th gen of a terrible uarch surpassing the first gen of an excellent uarch that is now in it's 6th generation.

You can spin that either way. Either AMD is terrible because it took four generations to beat a piece-of-crap architecture (compared to Sandy Bridge and beyond), or they have completely turned Bulldozer upside-down, inside-out, and put it where it was never originally designed to go — inside ludicrously thin laptops (at the cost of poor vendor design choices, mind you).

Bulldozer was never really meant to leak out of the server market, originally ... but, AMD marketers decided to put the binned dies to good use, which is what any company in AMD's situation would do (with common sense). It's also not good to waste material, so there's that too.

Quote:
Originally Posted by Fyrwulf View Post

If Zen can get within shouting distance of Broadwell's IPC and then close the rest of the performance gap with brute force, it's going to get really interesting. Especially if Samsung can get their 10nm process out on time for Zen+.

I am predicting a 4.00 GHz Zen quad-core to sit nicely between the i7-3770 and i7-4790T. And I think it's safe to assume 4.00 GHz will only be a Turbo Core frequency, or the result of an overclock. As Zen matures, I think we will see 4.00 GHz stock.
Edited by DylRicho - 2/24/16 at 6:34pm
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post #696 of 841
Quote:
Originally Posted by 7850K View Post


I'd say it says a lot about AMD's engineers. the 4th gen of a terrible uarch surpassing the first gen of an excellent uarch that is now in it's 6th generation.

 

That's how I've thought of it. AMD has got talented engineers; the business side has been the dead weight. That AMD got anything out of such a poor remit as Bulldozer has me optimistic about what can be accomplished with a Keller arch, a realistic concept from management, and as much in the way of resources as a moribund AMD can muster.

     
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post #697 of 841
Quote:
Originally Posted by DylRicho View Post

I am predicting a 4.00 GHz Zen quad-core to sit nicely between the i7-3770 and i7-4790T. And I think it's safe to assume 4.00 GHz will only be a Turbo Core frequency, or the result of an overclock. As Zen matures, I think we will see 4.00 GHz stock.

I think you hit the nail right on the head. SMT is a major wildcard here, and one that will likely not favor AMD. If they can manage 15% SMT scaling, I'll consider it a major success. Any more than that, the more they should be applauded. That said, Zen does have enough hardware that AMD could concurrently schedule two threads on dormant execution units - or maybe just schedulers - and could see a dramatically higher scaling than they would otherwise - and possible more than Intel sees under congested loads.
post #698 of 841
Quote:
Originally Posted by SpeedyVT View Post

thumb.gif
Unfortunately he is, but I know what you mean. He did break the 15 cTDP lock on the laptop go it up higher, but 95 watt TDP is what I'm interested in knowing.thumb.gif

You recon 3.4GHz @ 65W cTDP and 3.4GHz @ 95W cTDP produce different results?

Increasing the TDP obviously doesn´t improve the performance, unless the clock are increasing too. All Carrizo SKUs are fully locked.
post #699 of 841


I believe this slide supports some of my thoughts on AMD's upcoming SKUs. AMD's low end processors are going to be low effort, mature node, and previous architecture. I honestly don't think we're going to see FP4 Zen APUs until FX Zen+ processors come up. We might not see Zen Athlons at all.
post #700 of 841
Quote:
Originally Posted by Fyrwulf View Post



I believe this slide supports some of my thoughts on AMD's upcoming SKUs. AMD's low end processors are going to be low effort, mature node, and previous architecture. I honestly don't think we're going to see FP4 Zen APUs until FX Zen+ processors come up. We might not see Zen Athlons at all.

What about that slide do you think supports your thoughts?

I do think that Zen+ is planned for only a year-ish after Zen, but Zen APUs are planned before that (probably mid '17). As for Zen Athlons, I think we'll see that around the time the APUs come out, just for die harvesting.

Zen+ APUs will probably be six months or so after Zen+ CPUs, and the process should continue. Sadly, I've heard nothing about a post Zen+ plan. By this time for Bulldozer's run-up, I was already aware of Excavator... four generations of planning.
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