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Atomic Superpi Scores V5


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#741 Rybags

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Posted 01 June 2015 - 04:34 PM

That's way worse than I'd expect from a modern CPU at that speed.  Though it is a single threaded BM and benefits greatly from better Ram access speeds.

 

How does wPrime go on that setup?  Though I'm not sure how many threads it allows for.



#742 sora3

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Posted 02 June 2015 - 02:27 PM

If you notice my sig, the RAM is the limiting factor here. I'd probably get better RAM later but given how Zen and the new platform is coming round next year, I'd rather put up with it.

 

In comparison to the Piledriver FX I have, it's actually about right. 4.4GHz on the FX resulted about 18.6sec before the patcher came in and 'fixed' it. In some x86 limited games, the APU is actually better, resulting in a smoother play. I can probably push the APU into suicidal runs but I can't get the stability needed to actually bench before the protection kicks in and give me a BSOD.


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#743 mark84

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Posted 29 June 2015 - 01:35 PM

Can't wait to see what HBM equipped Zen APUs will achieve. C'mon, you know it's gotta be coming :p


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#744 gamble

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Posted 02 July 2015 - 12:50 AM

Zen APU with HBM?!?  That might be really awesome!


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#745 Morgoth

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Posted 17 August 2015 - 08:32 PM

Mark84, holy banana that CPU is mad, You've done well considering Smak has one of the BEST sandy bridges anyone has found, just about ever.

 

I really hope zen isn't another freaking bulldozer. Also they need to stop pretending they have 8 true cores, not fooling anyone !


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#746 Dasa

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Posted 20 August 2015 - 03:21 PM

playing with the ram timings on a nuc

not a score to submit yet just showing where its at

downloaded win10 32bit by mistake and found out that I need to install win8 first to get its key upgraded so a few things to take care of yet

 

nuc%20spi_zpssrnxucsd.jpg


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#747 nobody813

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Posted 22 August 2015 - 10:24 PM

Never knew you'd be able to tweak a NUC like that. Also that's some crazy speeds on your SSD!


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#748 Rybags

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Posted 22 August 2015 - 11:11 PM

Embarrassing - that's quicker than a Core2Quad... though SuperPi isn't the best bench to use for multicore comparisons.



#749 Dasa

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Posted 23 August 2015 - 10:53 AM

managed to get under 18s in safemode with 8-7-8-24-1t sub timings are also tweaked

running 32m now

cant find a working dl link for maxxpi

 

yep the 128g samsung 951 is a beasty ssd

pci-e 2.0 x4 holds it back a little bit but not much

 

i have been getting some graphic corruption after resuming from standby at these speeds so its not exactly stable

had to relax sub timings for 32m

 

was able to get maxxpi from here

http://www.radeon3d....chmarks/maxxpi/

windows was unable to open the zip for some reason which normally only happens if its corupt

winrar was able to extract it ok but opening maxxpi on my sandy system locks it up to the point where i have to hit reset

 

its looking like spi 32m may end up around the 15 minute mark


Edited by Dasa, 23 August 2015 - 11:27 AM.

Silverstone TJ08-EW 6700k@4.7 1.375v - Z170-GENE - 2x8g 3866 16-16-16 - 1070@ 2100\9600MHz  -Samsung 830 64G, Sandisk Ultra II 960G, WD Green 3tb - Seasonic XP1050 - Dell U2713 - Pioneer Todoroki 5.1 Apogee Drive II - EK VGA-HF Supreme  - Phobia 200mm Rad - Silverstone AP181 Project Darkling
3770k vs 6700k RAM Scaling, HT vs RAM, Arma III CPU vs RAM, Thief CPU vs RAM
Parts Guide


#750 Dasa

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Posted 23 August 2015 - 12:04 PM

1m

00:17:969 http://i3.photobucke...zps4fdf7dzg.jpg

pi_zps4fdf7dzg.jpg

32m

14:46:997 http://i3.photobucke...zpskmh4omoh.jpg

pi32m_zpskmh4omoh.jpg

20150823_113459_zpstb3lra7d.jpg

sub timings used for spi 1m all ~1-2 lower than for 32m

20150823_113552_zpsl5oadxj3.jpg

TRFC defaults to 240 lowering it provides one of the bigest imrpovements to memory speed

droping TWR further seemed to lower performance

the ram is g.skill 2133 c11 sodimm


Silverstone TJ08-EW 6700k@4.7 1.375v - Z170-GENE - 2x8g 3866 16-16-16 - 1070@ 2100\9600MHz  -Samsung 830 64G, Sandisk Ultra II 960G, WD Green 3tb - Seasonic XP1050 - Dell U2713 - Pioneer Todoroki 5.1 Apogee Drive II - EK VGA-HF Supreme  - Phobia 200mm Rad - Silverstone AP181 Project Darkling
3770k vs 6700k RAM Scaling, HT vs RAM, Arma III CPU vs RAM, Thief CPU vs RAM
Parts Guide


#751 nobody813

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Posted 14 September 2015 - 06:51 PM

I suck at overclocking :-P


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#752 Dasa

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Posted 02 October 2016 - 01:24 AM

just a quick run in untweaked win10 at stable clocks

1m was only 7.766 at these clocks at ~8.8 stock clocks

spi32m.jpg


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3770k vs 6700k RAM Scaling, HT vs RAM, Arma III CPU vs RAM, Thief CPU vs RAM
Parts Guide


#753 gamble

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Posted 07 October 2016 - 03:35 AM

What happens if you lower the ram frequency and run lower/tighter timings?  Maybe up the blck by 1% with the current?  Might be able to get 1T for a few runs? 


Edited by gamble, 07 October 2016 - 03:37 AM.

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#754 Dasa

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Posted 14 October 2016 - 09:05 AM

it can benchmark at 1t c15 just need to unplug the power for a bit to allow it to post with the 1t change then again when going back to 2t...

the mb seems to have a little trouble with memory training when swapping between 1t and 2t over 3600

 

from what i can gather the performance gain would be minimal probably smaller than swapping from win10 to xp

may give it a go one day and find out cant be bothered at the moment though


Edited by Dasa, 14 October 2016 - 09:06 AM.

Silverstone TJ08-EW 6700k@4.7 1.375v - Z170-GENE - 2x8g 3866 16-16-16 - 1070@ 2100\9600MHz  -Samsung 830 64G, Sandisk Ultra II 960G, WD Green 3tb - Seasonic XP1050 - Dell U2713 - Pioneer Todoroki 5.1 Apogee Drive II - EK VGA-HF Supreme  - Phobia 200mm Rad - Silverstone AP181 Project Darkling
3770k vs 6700k RAM Scaling, HT vs RAM, Arma III CPU vs RAM, Thief CPU vs RAM
Parts Guide


#755 sora3

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Posted 17 March 2017 - 11:17 AM

First new post in a long time...

 

BvyHRQa.jpg


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#756 Rybags

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Posted 17 March 2017 - 04:00 PM

Cool.  SuperPi is a good indicator of single core performance and is also somewhat sensitive to memory settings.

 

That time is probably a little disappointing.  I've done a bunch of 1M runs in the last year, problem is I've got it on scraps of paper and various pages of my notebook.

Anyway, some comparitive Intel figures from various generations of i5 and i7 CPUs that I have here, as well as some old Core2 era gear with overclocking:

 

Macbook Pro 2011, Core i7 2620M (Sandy Bridge 2C/4T @ 2.7-3.4 GHz) 16 Gig DDR3 @  1333-9-9-9-24   11.419s

Toshiba Satellite, Core-i5 3210M (Ivy Bridge @2C/4T @ 2.4-3.1 GHz) 12 Gig DDR3 @ 1600-11-11-11-28    12.921s

Dell Precision Desktop, Xeon W3550 (Bloomfield 4C/8T @ 3.07-3.33 16 Gig DDR3 @ 1066-6-7-6-18         13.148s

Core i7-870 (Bloomfield 4C/8T @ 2.93-3.6 GHz) 11.824s

 

Core2 Quad Q6600 @ 2.4 GHz    21.56s

Core2 Quad Q6600 @ 3.853 GHz 13.526

 

I've got some good results from a C2D 8400 which exceeded 4 GHz, I'll put them up if I can find them.



#757 sora3

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Posted 17 March 2017 - 07:08 PM

@Rybags, considering how bad AMD had it, this is probably a huge improvement.


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#758 Rybags

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Posted 17 March 2017 - 08:03 PM

Yep.  Some wPrime runs might be interesting.  Generally I've found modern Intels with HT can get near to 1/3rd improvement with a thread per virtual core instead of per physical one.



#759 mark84

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Posted 19 March 2017 - 09:02 AM

Cause Rybags seems to into wPrime I tried to run it on my Ryzen review PC. It just fails to launch with an error. Maybe they need to update for Ryzen, dunno. Or I downloaded a dud, but from their official website, I doubt.

Anywho. Time to post this Ryzen's scores up.

The RAM is probably holding it back some, only 2400MHz. But I threw 1.55v at the core (maximum software allows) in an attempt to crack the 10s mark, but I just couldn't do it on this CPU. Needed an extra 25MHz that I just couldn't reach. Oh well.

Decided to do a y-cruncher run too. I'm liking this software more and more. I reckon we ditch MaxxPi in favor of y-cruncher.
In y-cruncher did a 1B decimal point multi-threaded run (So options 0 > 1 > 6, when you run y-cruncher).

Ryzen%201700X%20%204.25GHz%20Super%20Pi.

 

Ryzen%201700X%20%203.875GHz%20y-cruncher

 

Updated CPU-Z for y-cruncher when I realized Sora had posted one with the Ryzen logo in it lol


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#760 mark84

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Posted 19 March 2017 - 10:27 AM

And for comparison, my i7 6850K and near identical clocks of 3.9GHz. Even though it only has six cores, it does have quad channel memory running at 3200MHz.

Manages to beat the Ryzen 7 1700X @ 3.875GHz

 

i7%206850K%203.9GHz%20y-cruncher%201B.jp

 

And when I push the 6850K to the limits (4.5GHz) I get this

i7%206850K%204.5GHz%20y-cruncher%201B.jp

 

A whole 10 seconds quicker...

 

Here's a fascinating insight from the y-cruncher developer about his Zen tuned latest y-cruncher version

 

I went through a lot of trouble to do this in time for Pi day, but here it is. y-cruncher v0.7.2 has a new binary specifically optimized for AMD's Ryzen 7 processors.

 

The performance gain is about 5% over the Broadwell-tuned binary and 15% over v0.7.1. It turns out that the optimizations between v0.7.1 and v0.7.2 happened to be more favorable to AMD Zen than to Intel processors. Nevertheless, this is not enough to make Ryzen beat Haswell-E or Broadwell-E.

 

It's unlikely that any amount of Zen-specific optimizations can make Ryzen beat Haswell/Broadwell-E. The difference in memory bandwidth and 256-bit AVX throughput is simply far too large to overcome. AMD made a conscious decision to sacrifice HPC to focus on mainstream.

 

As for the Ryzen platform itself: It's a bit immature at this point. I went out on launch day to grab the Zen parts. In the end, it took me 3 sets of memory and 2 weeks before I finally found a stable configuration that I could use. From what I've seen on Reddit and various forums, I've been unlucky, but I'm definitely not alone.

 

Slightly more concerning is a system freeze with FMA instructions which appears to be have been confirmed by AMD as a processor errata. Fortunately, the source also says this is fixable via a microcode update. So it won't lead to something catastrophic like a recall or a fix that disables processor features.

 

As for the Zen architecture itself. Here are my (early) observations:

  • The FPU block diagrams that were released about Zen appear to be accurate. The FLOPs benchmark is able achieve 4 128-bit CPU instructions/cycle if there is an equal distribution of FP-adds and FP-multiplies. As expected, FMAs have twice the cost since they need both an FP-add and an FP-multiply.
  •  
  • 256-bit AVX instructions are handled efficiently enough that it seems to be beneficial to use 256-bit instructions when there's no overhead to doing so.
  •  
  • Memory is huge bottleneck. Latencies are very high and dual-channel memory is simply not enough to feed this much computational throughput.
  •  
  • The Ryzen 7 can run FMA4 instructions even though the corresponding CPUID flag is cleared. This is probably to enable some compatibility with code written for AMD Bulldozer while discouraging further use of FMA4. On the other hand, XOP instructions did not get this treatment so they will crash. Ryzen's ability to run FMA4 instructions makes it possible to run y-cruncher's XOP binary without crashing for small computations.

For software developers, compiling code on the 1800X is about as fast as the 5960X at stock clocks. But the 5960X has much more overclocking headroom, so it ends up winning by around 15%. For a $500 processor, the R7 1800X is very impressive.


I've also updated the OP and started to include y-cruncher 1B bench times. Get benching people! :)


Edited by mark84, 19 March 2017 - 10:28 AM.

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