AMD launches Zen+ 12nm Ryzen and X470 motherboards

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IRobot23

Senior member
Jul 3, 2017
601
183
76
Meh, back when Skylake-X was detailed I called the design decision of heavily investing into wider AVX misguided and and completely unsuitable for consumer processors, and I still stand by it. I'd rather AMD revives its heterogeneous computing initiative and find a way to transparently uses GPGPU for wider AVX SIMD instructions.

For comparisons, we are talking about 28% higher IPC at best while its cores (incl. L3 cache) are over 64% bigger, both at 14nm where Intel still has a significant advantage.

Yeah is is talking about AVX512... what about power comparison?
 

tamz_msc

Diamond Member
Jan 5, 2017
3,865
3,729
136
According to my latest test, Skylake-X has 14.6 - 28% higher IPC than Ryzen (post Spectre & Meltdown fixes).
Wasn't Skylake 12-13% ahead(excl. 256b) in your Ryzen Strictly technical post? Doesn't seem that surprising IMO that SKL-X is slightly ahead. It is the best performer in most applications except games and a couple of latency sensitive tasks.
 

tamz_msc

Diamond Member
Jan 5, 2017
3,865
3,729
136
Meh, back when Skylake-X was detailed I called the design decision of heavily investing into wider AVX misguided and completely unsuitable for consumer processors, and I still stand by it. I'd rather AMD revives its heterogeneous computing initiative and find a way to transparently uses GPGPU for wider AVX SIMD instructions.

For comparisons, we are talking about 28% higher IPC at best while its cores (incl. L3 cache) are over 64% bigger, both at 14nm where Intel still has a significant advantage.
Wider AVX allows Intel to try and entice AI and ML guys into writing code for the CPU, and let's face it, there far more people who are are able to write x86 code than CUDA. Of course AMD wants their GPUs to do the same stuff so I expect AMD to not be as aggressive in pushing wide-AVX in their CPUs. Let's see what they do with Zen 2.
 
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moinmoin

Diamond Member
Jun 1, 2017
4,994
7,765
136
.
Wider AVX allows Intel to try and entice AI and ML guys into writing code for the CPU, and let's face it, there far more people who are are able to write x86 code than CUDA.
Sure, but in perf/watt it will always fight a losing battle against (semi-)dedicated accelerators. The mixed code scenario is the only thing it has going for it, and that's with the negative caveat of throttling the actual CPU whenever in actual use. The consumer oriented i9 series already showcased the extend of the issue of having to handle what's essentially a different platform with completely different thermal requirements.
 

raghu78

Diamond Member
Aug 23, 2012
4,093
1,475
136
Meh, back when Skylake-X was detailed I called the design decision of heavily investing into wider AVX misguided and completely unsuitable for consumer processors, and I still stand by it. I'd rather AMD revives its heterogeneous computing initiative and find a way to transparently uses GPGPU for wider AVX SIMD instructions.

For comparisons, we are talking about 28% higher IPC at best while its cores (incl. L3 cache) are over 64% bigger, both at 14nm where Intel still has a significant advantage.

Well said. AMD are better off building better software support for GPGPU in consumer applications through OpenCL and ROCm. The GPU will run circles around any CPU based acceleration for FP workloads and will be more power efficient too. Look at DVD transcoding, LuxMark for examples

https://www.pcper.com/reviews/Graphics-Cards/GPU-Compute-Performance-Ryzen-5-2400G
 
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ondma

Platinum Member
Mar 18, 2018
2,779
1,352
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Anyway, what is interesting in this graph is that Ryzen 7 2700X see the biggest improvement in games that Ryzen 7 1800X does the poorest (compare Intel's counterpart).

I am assuming that this is from the higher boost clock.

What is most notable about these games (that Ryzen 7 2700X improved upon) is that they are all poorly threaded.

So this means that while the average FPS increase is only 5%, this is quite misleading and that users would see big improvements (up to 14%) in games that perform poorly on Ryzen 7 2700X.

Another leak showing only a modest improvement in gaming. Overall 5% improvement will make it still in the neighborhood of i5 8400 at sub 200.00. I mean you can look at the high end of improvement and tout the 14%, but OTOH, many games show no improvement at all.
 

itsmydamnation

Platinum Member
Feb 6, 2011
2,867
3,418
136
Another leak showing only a modest improvement in gaming. Overall 5% improvement will make it still in the neighborhood of i5 8400 at sub 200.00. I mean you can look at the high end of improvement and tout the 14%, but OTOH, many games show no improvement at all.
Unless GPU bound i find this really hard to believe, simply because the 2/3/4/5 core turbo is much higher then the 1800X. Add that many games see good improvements from improved memory latency, i would be very skeptical of 0% improvement. I doesn't make sense, gaming was the one area where Zen was weakest, the boost and latency changes should have biggest impact to gaming. Only games that can max 16 threads would be at risk of not seeing large improvements, but those already performed well on Ryzen. But oddly to that statement AOTS is supposed to see big gains so that must all be down to better latency.......
 
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CatMerc

Golden Member
Jul 16, 2016
1,114
1,153
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Another leak showing only a modest improvement in gaming. Overall 5% improvement will make it still in the neighborhood of i5 8400 at sub 200.00. I mean you can look at the high end of improvement and tout the 14%, but OTOH, many games show no improvement at all.
Because most of those are GPU bound.
Read the list from left to right, and remember that this was tested with a GTX 1080 with all settings set to Ultra. You will notice a certain trend.
 
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DisEnchantment

Golden Member
Mar 3, 2017
1,687
6,243
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Wider AVX allows Intel to try and entice AI and ML guys into writing code for the CPU, and let's face it, there far more people who are are able to write x86 code than CUDA. Of course AMD wants their GPUs to do the same stuff so I expect AMD to not be as aggressive in pushing wide-AVX in their CPUs. Let's see what they do with Zen 2.
My opinion is that OpenCL on GPUs is more suited for ML. Intel is really good with their OpenCL and clDNN.
Also the code is open source. And the deliveries to their Enterprise clients is far ahead than what is released in public domain.
We need AMD to make solid progress on their ROCm effort as well.
 
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The Stilt

Golden Member
Dec 5, 2015
1,709
3,057
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Wasn't Skylake 12-13% ahead(excl. 256b) in your Ryzen Strictly technical post? Doesn't seem that surprising IMO that SKL-X is slightly ahead. It is the best performer in most applications except games and a couple of latency sensitive tasks.

Yeah, by 12.3%.

The suite has been updated and modified since thou.
Coffee Lake is actually the fastest chip of them all by a small margin, when >= 256-bit workloads are excluded.
Meanwhile Skylake-X has significantly higher extremities and >= 256-bit workload results than Coffee Lake.
 

Mockingbird

Senior member
Feb 12, 2017
733
741
106
So, is there going to be an announcement for Ryzen 2nd gen soon or is AMD waiting until the last second, hoping not to disrupt sales of Ryzen 1st gen?
 
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wahdangun

Golden Member
Feb 3, 2011
1,007
148
106
Seeing the listing of geil sniper x ram, we can confirm that PR can clock ram much higher than RR, can't wait to see the results with 4000 ram, and how much ipc gain using much faster ram.
 

IRobot23

Senior member
Jul 3, 2017
601
183
76
Seeing the listing of geil sniper x ram, we can confirm that PR can clock ram much higher than RR, can't wait to see the results with 4000 ram, and how much ipc gain using much faster ram.

Aida 64
if CL19 DDR4 4000MT/s.
~55,6ns
Or even better stuff if 3600CL16
~ 59ns
 

Gideon

Golden Member
Nov 27, 2007
1,714
3,937
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Pardon my ignorance, but where can one find that listing? The only place mentioning new geil memory and Ryzen 2 seems to be this article. While official 3400 MHz support is a nice improvement over Ryzen 1xxx (3200 MHz), where do you get so low latencies from?
 

IRobot23

Senior member
Jul 3, 2017
601
183
76
Yeah and with that latency then PR will have latency parity with intel Skylake, maybe in games it will be like 3~5 %

Actually i7 8700K will have lower latency ~ >50ns with extreme timings and speeds ~>40 even down to 35ns. If AMD would give clock on IF (DATA fabric that connects Memory to CCXs) and we could clock it up to 3-3,5GHz then Ryzen 2000 would be clear winner in every game. There is no way that NB can ever match efficiency of IF.


i7 8700K has AUTO clock depends on memory to 4,3GHz on NB. Base clock is 3,2-3,7GHz for NB,

if INFINITY FABRIC (DATA FABRIC) would clock to 4GHz we actually could see some insane numbers below 35ns for memory latency.
http://www.overclock.net/forum/225-...icial-reviews-benchmarks-update-19-a-595.html

yeah,.. <35ns, but this is 5155MHz on NB.

But even with this insane number and clock it still cannot reach 60GB/s.

I think ZEN+ core is already ahead of INTEL for gaming, but AMD doesn't have the process and Ryzen architecture makes it inefficient for that kind of work.

Users, that can try do as I did, put 4-3,8GHz on i7 8700K and put NB to 1,6GHz and you will be amazed by tech from AMD.

I know that AMD is pushing hard, but they need to get business in servers... then they can focus on gaming GPU/CPU only. I bet 7nm from GF/IBM could give AMD a real chance.
 
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raghu78

Diamond Member
Aug 23, 2012
4,093
1,475
136
Ryzen 1K-series officially supports up to 2666MHz (1 DPC SR) and 2K-series is supposed to officially support 2933MHz.

Does it really matter ? 8700k official memory support is DDR4 2666 .

https://ark.intel.com/products/126684/Intel-Core-i7-8700K-Processor-12M-Cache-up-to-4_70-GHz

But we know 8700k can run DDR4 4000 Mhz kits . What matters is how well PR can support DDR4 3600 and DDR4 4000 speeds ? If high speed memory support is good then PR will automatically become very competitive in gaming.
 
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IRobot23

Senior member
Jul 3, 2017
601
183
76
Why would you do that? AMD FClk and Intel LLC/ring frequency don't even remotely do the same thing.

To try out stuff how they behave under different settings and compare "core". Same GB/s and same latency then you can do real core IPC benchmarks. And basically they are doing same thing, AMD named IF for everything, but there is a lot of stuff.

Why I call it data fabric (NB)


Some reviewers say that i7 8700K Coffeelake is not as affected by memory speed as Ryzen is. That is true, but it is affected...
They would be better of by saying that Ryzens NB (hardlinked to IMC) is affected by memory speed while Intel's NB (has it own clock) is not.
https://www.youtube.com/watch?v=1FWodggIGB4
 
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The Stilt

Golden Member
Dec 5, 2015
1,709
3,057
106
Does it really matter?
If high speed memory support is good then PR will automatically become very competitive in gaming.

Nope.
And nope.

High speed memory won't automatically make Ryzen better in gaming.
The improvements from higher than 3200MHz MEMCLK are already diminishing.
At or above 3200MHz lower latency matters much more.

 

Bouowmx

Golden Member
Nov 13, 2016
1,142
550
146
To try out stuff how they behave under different settings and compare "core"
AMD Zen L3 cache operates same as core frequency. Intel Nehalem uncore, and Haswell and later LLC/ring frequency is decoupled from core frequency.

So, if one does:
Users, that can try do as I did, put 4-3,8GHz on i7 8700K and put NB to 1,6GHz and you will be amazed by tech from AMD.
to get 3.7 GHz core, 1.6 GHz LLC/ring, and compare to AMD Zen 3.7 GHz core and L3 cache, that test can't be called "real core IPC benchmarks".
 

PhonakV30

Senior member
Oct 26, 2009
987
378
136
Nope.
And nope.

High speed memory won't automatically make Ryzen better in gaming.
The improvements from higher than 3200MHz MEMCLK are already diminishing.
At or above 3200MHz lower latency matters much more.

Holy Hell! , different between 3200 & 3200 LL Is huge.
 

IRobot23

Senior member
Jul 3, 2017
601
183
76
AMD Zen L3 cache operates same as core frequency. Intel Nehalem uncore, and Haswell and later LLC/ring frequency is decoupled from core frequency.

So, if one does:

to get 3.7 GHz core, 1.6 GHz LLC/ring, and compare to AMD Zen 3.7 GHz core and L3 cache, that test can't be called "real core IPC benchmarks".

L3$ runs at same as core. Ring Bus is different thing.
L3$ on desktop processors (non mesh type) is running at core clock. New Intels Mesh system allows decoupling LLC.

Or I am missing something?
L3 did downclock if iGPU was using it.
 
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