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Staro 26.03.2017., 21:14   #4111
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Nije ni malo slican procesor od Intela kosta 2000 dolara i ima TDP od 120W j max turbo boost mu je na 3ghz. Ne sumnjam da nece biti konkurentan samo me eto iznenadio tdp, vise bi pasao taj tdp na 32c procesor
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Staro 27.03.2017., 21:42   #4112
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Zen Power Draw, or: Why I'm Not Afraid of 32-Core Skylake


We'll start here: http://imagescdn.tweaktown.com/conte...cpu-review.png

This shows the 1800X, which handily beats the 6900K in performance at stock values, running 12% lower power at full load and using two-thirds less power at idle. There are two factors not counted in to this. 1) Ryzen is a SoC which has lots of the I/O functionality built in, so that power budget is used on the CPU instead of the chipset. 2) Naples 2p systems will use infinity fabric built into the CPU to communicate between CPUs and attached devices where Intel's systems must communicate through a slower southbridge chipset which consumes more power (and those chipsets are manufactured on older, less power-efficient nodes). Both of these factors mean the gap reported is likely to be even more in AMD's favor for server parts.

Here you can see the same comparison with both CPUs locked to 4GHz: http://imagescdn.tweaktown.com/conte...cpu-review.png

This is less favorable, on the surface of the thing, but if you actually examine what this means, it's very important and a very good indicator for AMD. Idle power draw is still very, very good compared to Intel HEDT. Again, the onboard I/O is contributing an unknown amount of power to the total draw for Ryzen, but that's not the important part. The important part is that you can see that the fully-loaded draw ramps up between 3.6GHz and 4.0GHz enough to shift the advantage to Intel. That means AMD's Ryzen chips are already binned pretty high on their ideal power curve and reducing the frequency by a few hundred megahertz can save a massive amount of power. (This will be confirmed in some other charts.)

This chart gives comparative numbers for a wider variety of CPUs: http://www.techspot.com/articles-inf...h/Power_02.png

This is full system load, not just CPU draw, so it's not a perfect data set but it's still very telling. Notice the big drops from the 1800X down to the 1700X. Notice how close the 1700X is to 4c Devil's Canyon and 6c Broadwell-E. Also take note that Intel's Broadwell-E 8c part (6900K) makes an unfavorable showing compared to it's Haswell-E predecessor. This is mostly due to the clock speed differences, but it shows that there's very little power efficiency gained between those generations.

These two reviews show that that efficiency gain continues very well from the 1700X down to the 1700: http://www.guru3d.com/articles_pages..._review,7.html http://www.guru3d.com/articles_pages..._review,7.html

This chart from PC Perspective provides more confirmation of Ryzen's power advantage over Broadwell-E: https://www.pcper.com/files/review/2017-02-27/power.png

Remember, the 1800X trounces the 6900K in Cinebench R15, so even if it were using more power, it would be more efficient. Again, this chart is using full system load, so it's not ideal. However, that's at least partially off-set by the onboard I/O vs. chipset power (which is to say that some of that "full system draw" on Intel's side is counted in the CPU draw on AMD's side).

Ryzen total system power compares remarkably well with 4c Kaby Lake: https://www.techpowerup.com/reviews/..._1800X/14.html

So what does all of this mean for Naples? Well, first, it means AMD is already crushing Broadwell-E in performance-per-watt. Skylake-E is a new platform and we don't know everything about it, yet, so Intel could surprise us with some amazing power efficiency gains, but comparing the desktop platforms shows us that Skylake did not make significant gains in power efficiency from Broadwell. So given what we know about Haswell to Broadwell to Skylake on the desktop and what we know about Haswell-E to Broadwell-E, it certainly doesn't give us any reason to expect a surprise from Skylake-E.

It also means the Samsung/GloFo process is demonstrating a very good power curve. Server parts are not likely to be clocked at 4GHz. The rumored 32 core Skylake part runs at a speed of 2.3 GHz. Extrapolating from the power curve of Ryzen 7, it seems like AMD and GloFo will handily beat Intel's power efficiency at that speed. The MCM design of Naples could also enable them to offer higher clock-speeds (we'll have to wait and see on this).

So, Naples probably offers a more competitive price out of the box, better TCO and vastly superior I/O. But it's okay, because Intel still has AVX-512! Right, Brian?
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Staro 12.04.2017., 18:40   #4113
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