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Hammering The AMD Ryzen 7 1800X With An Intense, Threaded Workload

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  • #21
    Originally posted by pal666 View Post
    explanation of 16 thread result is 4 channels of memory on 5960x
    Yep, probably 4 and 8 thread too (unless Michael comes back and says the 5960 was reconfigured with 2 channels for these tests) plus the Ryzen system is probably still running memory at 2133 MHz for now until all the required BIOS updates are available.

    What I like about this test is that it's probably one of the more bandwidth-limited benchmarks we have seen, so once memory speeds start to go up there should be some interesting impact on the results.

    AIDA64 and Sandra benchmarks show 33-50% bandwidth improvement going from 2133 to 3200 MHz, and there *might* be some additional improvement from the data fabric running faster as well (I say "might" because the numbers don't suggest that inter-CCX communication is a big factor).
    bridgman
    AMD Linux
    Last edited by bridgman; 16 March 2017, 08:38 PM.
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    • #22
      Originally posted by Brane215 View Post
      5, code was compiled with -mtune=generic, so far from what one would use doing soem real work.
      I believe the bench uses the tuning from OPM. You will find the logics here:
      https://github.com/OPM/opm-common/bl...mization.cmake
      In other words, -O2 -mtune=native -DNDEBUG
      while -flto is turned off due to compiler bugs. Using more aggresive compiler switches might give you 10-20% better performance.

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      • #23
        More powerful cpu demonstrates better performance -- they suggest gimping it while calling it overpriced. Seems legit.

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        • #24
          Originally posted by phoronix View Post
          These clock frequencies match that of the Ryzen 7 1800X with its base and turbo frequencies, but the E3-1270 v5 sells for around $300 USD while the 1800X is around $500.
          ...
          Ryzen 7 1800X and Xeon E3 1270 v5 that are clocked the same, but with this Xeon E3 part retailing for almost $200 less for this quad-core + HT workstation CPU.
          Ugh, what does the Ryzen 7 1800X costs vs i7-5960X? it is not mentioned in the article...

          Michael
          Phoronix
          Michael
          How come I never see you mention the cheaper AMD part? These one sided price comparisons don't bode well for the neutrality of a benchmarking site...

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          • #25
            Originally posted by faph View Post
            Ugh, what does the Ryzen 7 1800X costs vs i7-5960X? it is not mentioned in the article...
            1800X, 586 Euros vs 5960X, 1200 Euros
            Yeah, the Intel one costs about double.

            I hope AMD's problematic 16 thread performance can be patched via kernel updates.

            Personally I'm not in a hurry so I'll wait probably for the next CPU generation. i5-4670K is quite good for games but more threads would be nice for actual work.

            Originally posted by faph View Post
            How come I never see you mention the cheaper AMD part? These one sided price comparisons don't bode well for the neutrality of a benchmarking site...
            I agree it's somewhat unfair to not mention you're comparing so differently priced products, the comparison itself is legitimate though. You compare the very best Intel and AMD have to offer.

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            • #26
              Michael
              Junior Member
              Michael if you want a good test workload, try the monster that is compiling LLVM. Probably the largest pain in the ass thing to compile!

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              • #27
                I wonder what's perf/power ratio here. After all, a 1800X has a TDP of 95W while the Core i7 5960Xhas a TDP of 140W, aye...

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                • #28
                  I wished you could test the impact of a decent heatsink and cooling system on the performance of New cpus. Ryzen has auto over clock feature.

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                  • #29
                    Originally posted by keivan View Post
                    I wished you could test the impact of a decent heatsink and cooling system on the performance of New cpus. Ryzen has auto over clock feature.
                    true this would be very interessting.

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                    • #30
                      Originally posted by funfunctor View Post
                      Michael
                      Junior Member
                      Michael if you want a good test workload, try the monster that is compiling LLVM. Probably the largest pain in the ass thing to compile!
                      Compiling Firefox, Chromium, LibreOffice and Unreal Engine 4 are all good contenders for that.

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