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[OC3D] AMD's Zen will have a "greater than 40%" IPC improvement over Excavator, says Lisa Su - Page 24

post #231 of 841
Quote:
Originally Posted by Tojara View Post

I'm guessing:

2C/4T - 3.3 GHz / 3.6 GHz - ~65W - $70

2C/4T - 3.5 GHz / 3.7 GHz - ~65W - $90

4C/8T - 3 GHz/ 3.4 GHz - ~65W - $160

4C/8T - 3.3 GHz / 3.6 GHz - ~95W - $190

6C/12T - 3.1 GHz / 3.4 GHz - ~95W - $240

6C/12T - 3.3 GHz / 3.6 GHz - ~125W - $280

8C/16T - 3.1 GHz / 3.4 GHz - ~125W - $320

8C/16T - 3.3 GHz / 3.5 GHz - ~125W - $350

With Skylake having about 20% higher IPC, most of the chips would have about 20% slower in ST and about 25-35% faster in MT.

Is that how Zen's processor line up will be? What hyper-threading technology are they using?
Edited by sepiashimmer - 1/25/16 at 4:14am
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post #232 of 841
Quote:
Originally Posted by sepiashimmer View Post

Is that how Zen's processor line up will be? What hyper-threading technology are they using?
Not necessarily, it's just an educated guess based on what's known and the pricing is based on performance. With the prices I listed the Zen CPUs would beat the Intel options by 30-50% in MT but lose by 20-35% in ST, though it is a slightly pessimistic model assuming Skylake beating Zen by 25% in IPC. The TDPs are +-20W as well.

They won't be using hyperthreading as it's Intel's own technology, they'll be using a different SMT solution. The end result should be similar, though probably less effective at first. I personally don't think disabling SMT helps yields enough to make sense outside of differentiating SKUs, and as Zen will almost certainly ship at lower volume than Intel chips it's even less likely.
post #233 of 841
Hopefully AMD gives a comparable, competing product that I might buy again.
Hopefully it won't be another faildozer.

Still wondering how they're figuring greater than 40% IPC increase. I'd like to know how they're using their metrics for that.
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post #234 of 841
Quote:
Originally Posted by Themisseble View Post

ZEN 5GHz @ 1.15V core

What about price predictions?
2C/4T? 80-140€?
4C/4T ? 150 - 200€ or even more?
4C/8T ? 250 - 300€ or even more?
6C/12T ? 350 - 400€?

Will ZEN core get BE edition?

Its buls*t Non sense. As The Stilt said. Zen FX is not created for high clocks. Propably stock clocks will be around 3-3.4 GHz and max useable OC around 4.4 GHz in best case.
The same with threads. There will be not more than 8 threads. I think, AMD will create something as 4CU/8T. The product is focusing against LGA1151, not against LGA2011.
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post #235 of 841
Quote:
Originally Posted by FlanK3r View Post

Its buls*t Non sense. As The Stilt said. Zen FX is not created for high clocks. Propably stock clocks will be around 3-3.4 GHz and max useable OC around 4.4 GHz in best case.
The same with threads. There will be not more than 8 threads. I think, AMD will create something as 4CU/8T. The product is focusing against LGA1151, not against LGA2011.
I agree with the clock speed estimations, but not with 4C/8T quite yet. Unless they've actually regressed in making caches they could fit a 8C/16T package in something 200mm^2-ish, as Zen cores should be simpler and thus smaller than Skylake ones. The ~120mm^2 Skylake chips also have about 40% of the die area as the GPU. AMD also had labeled Summit Ridge with "high core count with multi-threading" in their actual roadmap, that pretty much has to mean at least six.
post #236 of 841
Quote:
Originally Posted by Tojara View Post

I'm guessing:

2C/4T - 3.3 GHz / 3.6 GHz - ~65W - $70
2C/4T - 3.5 GHz / 3.7 GHz - ~65W - $90
4C/8T - 3 GHz/ 3.4 GHz - ~65W - $160
4C/8T - 3.3 GHz / 3.6 GHz - ~95W - $190
6C/12T - 3.1 GHz / 3.4 GHz - ~95W - $240
6C/12T - 3.3 GHz / 3.6 GHz - ~125W - $280
8C/16T - 3.1 GHz / 3.4 GHz - ~125W - $320
8C/16T - 3.3 GHz / 3.5 GHz - ~125W - $350
With Skylake having about 25% higher IPC, most of the chips would have about 20% slower in ST and about 25-35% faster in MT.

I don't think that's right at all. First 2c/4t parts would likely have a tdp of 35/45 watts. AMD top end 8c/16t chips would likely feature a 140w tdp. Pure speculation but we are no longer going to see 125w trdp cpu's be the normal.

AMD will have unlocked processors, that is a given. Those of you who mentioned the APU's could have a 7950 performance? you're smoking something good, the biggest problem right now with the APU's is memory bandwidth. DDR4 isn't going to solve those problems, the only thing that possibly could would be HBM. I have never been impressed by AMD's APU's thus far. The A8-3870k was the best of the bunch, maybe on par with kaveri, but i haven't played with one of those. When they brought the bulldozer uarch to the apu's man it killed them. I upgraded my old laptop to a new one and thought I went backwards in performance almost. My first one was a A4-3400m@3ghz (yes it was overclocked), to the new one which is the A10-5757m and yup little improvement despite getting 2 more cores, and more gpu cores. I think excavator will likely be the only AMD Apu that will be any good, until the Zen core, and that's highly debatable.

Hopefully the Zen core will fix AMD's mobile woes, and bring back some sort of parity with intel near the high end.
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post #237 of 841
AM4 will have 8 cores 16 threads.
AM4 will support large chip.
TheStilt still doesnt know zens details. So I dont believe theStilt.

But probably its true...
Edited by Themisseble - 1/25/16 at 6:50am
post #238 of 841
So with Zen, is AMD not creating a competitor to Nvidia's NVLink?
post #239 of 841
Quote:
Originally Posted by xxdarkreap3rxx View Post

So with Zen, is AMD not creating a competitor to Nvidia's NVLink?
I don't think they really need to, the plan is probably to not have a link interface and instead have the GPU right next to the CPU, on the same die or on the same interposer.
post #240 of 841
Quote:
Originally Posted by Tojara View Post

I don't think they really need to, the plan is probably to not have a link interface and instead have the GPU right next to the CPU, on the same die or on the same interposer.

Where do you see this? That sounds pretty much like their APUs. I'm not convinced they can bring a high performance CPU and GPU into the same package and even if they could, that limits potential to upgrade if the CPU starts lacking or if the GPU starts lacking.
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