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  1. AMD Raven Ridge 'Zen APU' Thread

    Reducing the L3 size could be one of the easier things. Indeed, there could be many possible reasons for this. And a full CCX is more like a topological building block, not a physical one. Shaving off some L3 in a single CCX design might come with a negligible perf loss if at all (no 2nd CCX to...

  2. CPU for Floats crunching

    In contrast to SiSoft Sandra it is also good to look at some "real world" benchmarks: http://www.tomshardware.com/reviews/amd-ryzen-threadripper-1950x-cpu,5167-12.html Also the Intel Fortran compiler might even be a good choice for Ryzen (depending on code and problem size).

  3. The Ryzen "ThreadRipper"... 16 cores of awesome

    Moin moin, NUMA unawareness should only cause some inefficiencies due to an additional hop to reach a different socket's or die's physical mem range. Similar to Hypertransport.

  4. Ryzen: Strictly technical

    That last posting by benbennett in AMD's forum is interesting. 46h (and counting) no crash with using a low latency kernel.

  5. Intel Skylake / Kaby Lake

    No. :)

  6. Intel Skylake / Kaby Lake

    To me it looks like there are just 256b AVX units. Multiple sources mentioned one 512b "port" with one fp port not being available during a 512b op, which means, those ops would be executed on two 256b units.

  7. The Ryzen "ThreadRipper"... 16 cores of awesome

    That's right and likely not worth the extra money for maybe 5% more fps. It'd be better to put that into a GPU then. But as I'm also doing deep learning and data processing, I got 2x16 for the R7. A TR buyer might also have other use cases in mind which benefit from more memory. Even a RAM disk...

  8. The Ryzen "ThreadRipper"... 16 cores of awesome

    I thought they would simply be slid (sp?) into the rails in the cover.

  9. The Ryzen "ThreadRipper"... 16 cores of awesome

    Some sites and magazines reported up to two digit points higher performance with dual rank mem (both apps and games). The software seems to benefit from some parallelism in the memory's inner workings. 2x the channels increase that even further. Points against that are the likely higher...

  10. The Ryzen "ThreadRipper"... 16 cores of awesome

    As a part time perfectionist I can understand the itch caused by a forced compromise like getting the highest ST performance with also a good MT performance esp. with 256b SIMD together with some limited I/O capabilities.

  11. Ryzen 64GB oc check-in thread

    Typhoon Burner gives the most detailed info.

  12. Ryzen 64GB oc check-in thread

    HWMonitor voltage is useless. Try HWinfo.

  13. Ryzen: Strictly technical

    IIRC you were the first, who reported such problems. How about contacting AMD and getting some free test systems to help them out? ;)

  14. The Ryzen "ThreadRipper"... 16 cores of awesome

    Being 4 DIMMs this sould be fine! But you'll miss out on the dual rank performance gains, which are like 200-500 MHz higher RAM speed for several games and apps. ;) All those OC DIMMs are rated at JEDEC 2133 speeds or so, but come with an pretested headroom (the XMP setting). Why shouldn't ECC...

  15. Ryzen: Strictly technical

    This bug is related to 16b real mode. There might be a few, but not many big players relying on such old software.

  16. The Ryzen "ThreadRipper"... 16 cores of awesome

    But times and mem controllers changed. 4 modules SR (or DR for higher performance) with 1/ch should run at clocks as high as 2ch system, just at twice the bandwidth.

  17. AMD RYZEN Builders Thread

    AGESA 1.0.0.6 is really good. I built my system last week and did some experiments. R7 1700X, Taichi (BIOS 2.36 now), 2x16 GB TridentZ 3200 CL15. That dual ranked RAM is running nicely at 3200 14-13-13-13-32-1T and 1.35V now, no VDD SOC increase was necessary. I should try 28, too. Higher...

  18. The Ryzen "ThreadRipper"... 16 cores of awesome

    Both of you should read page 1 of this thread, esp. The Stilt's posting.

  19. AMD RYZEN Builders Thread

    Indirectly. Being able to use the appropriate command rate might help getting higher memory clocks and maybe even somewhat lower latencies (no experience with the latter). That's what would help. Not the command rate per se.

  20. AMD RYZEN Builders Thread

    Many are new to me, too. But there's no need to know them all. One important option is the command rate setting (fixed at 1T for earlier AGESA versions, except for special BIOS versions like for the CH6, IIRC).

  21. AMD RYZEN Builders Thread

    There's a new Gigabyte BIOS with AGESA 1.0.0.5: http://forum.gigabyte.us/thread/886/am4-beta-bios-thread?page=55&scrollTo=4891 Those mem settings! (incl. CR of course!) (more pics at the imgur links): Source: https://imgur.com/gallery/WjUhL Source: http://imgur.com/a/i7UYu

  22. Official AMD Ryzen Benchmarks, Reviews, Prices, and Discussion

    Agreed. The star chart is very useful in this regard as it compresses data enough to provide a big picture without leaving much room for cherry picking based arguments.

  23. Ryzen: Strictly technical

    The interesting part is that these are single threaded tests. so that one thread could never fill and then use the 8 MB L3 of the second CCX, regardless if it's active or not. It's a victim cache. So if one CCX is completely parked, no core would fill the associated 8MB of L3 by throwing out L2...

  24. Ryzen: Strictly technical

    I assume prices are the main concern. I got a Taichi via Amazon.de for € 266 (directly from ASRock) as they had it in stock. I think you should be able to get it EU wide, just not at US prices ($200+VAT).

  25. Ryzen: Strictly technical

    More goodies: Source: "Processor Programming Reference (PPR) for AMD Family 17h Model 01h, Revision B1 Processors" http://support.amd.com/TechDocs/54945_PPR_Family_17h_Models_00h-0Fh.pdf

  26. AMD RYZEN Builders Thread

    Some reviews looked at DR vs. SR. Browse to the tables here: https://www.golem.de/news/ram-overclocking-getestet-ryzen-profitiert-von-ddr4-3200-und-dual-rank-1704-127262.html http://www.pcgameshardware.de/Ryzen-5-1600X-CPU-265842/Tests/R5-1500X-Review-Mainstream-1225280/3/ (2667 DR is more...

  27. Ryzen: Strictly technical

    While searching, I also found this:

  28. Ryzen: Strictly technical

    That's what The Stilt observed.

  29. Official AMD Ryzen Benchmarks, Reviews, Prices, and Discussion

    The Lord of the rigs! ;)

  30. AMD RYZEN Builders Thread

    1T or 2T. G.Skill lists the appropriate XMP command rate on their site.

  31. AMD RYZEN Builders Thread

    Wait.. white? There was another white card: SCNR ;)

  32. AMD RYZEN Builders Thread

    krumme already mentioned the 6% min fps advantage. I'll add more points: DDR4-2667 Single-Rank vs. DDR4-2667 Dual-Rank (improvement for the latter): Games: +6.2 % min fps, +5.3 % avg. fps Applications: +2.3% (7-zip: +12.2% Lightroom +3.7% x264 +2.4% were the biggest gainers) DDR4-2667...

  33. AMD RYZEN Builders Thread

    PCGamesHardware has lots of results with single rank vs. dual rank memory: http://www.pcgameshardware.de/Ryzen-5-1600X-CPU-265842/Tests/R5-1500X-Review-Mainstream-1225280/3/

  34. Which was Intel's first CPU to require a cooler?

    Later models might run cooler due to process improvements.

  35. Ryzen: Strictly technical

    It's not my review. The charts are meant to show performance relative to XV (top) and SB (bottom). Thus they have to include SB (top) and XV (bottom). Your observation reminds me of a question I asked in the past regarding performance measurement of actual video editing, not just the...

  36. Ryzen: Strictly technical

    Someone noticed that the 1T SB/XV charts are swapped, Edit: but they seem OK to me.

  37. AMD RYZEN Builders Thread

    AIDA & Co. just deliver results for specific cases/patterns (often the two extremes: linear and random). The mentioned apps which use a lot of memory would just trigger some delaying conditions more often. Here's an nice read on the topic...

  38. Intel have been secretly building Sandy Bridge CPUs as high as June 2015 manufactured date...

    Given the way how semis are being produced, wouldn't it be more like they produce them in batches as needed? I.e. ready the tools, insert masks, produce batch of wafers, switch tools to other stuff (chipsets, Atoms, whatever).

  39. AMD RYZEN Builders Thread

    I assume this is related to open mem banks and bank or rank internal roundtrips abd timings.

  40. Ryzen Locking on Certain FMA3 Workloads

    Power consumption and voltages should be more interesting as the fix might tweak the power management a bit. Performance might be seen in newer re-reviews.
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