Linux Performance at 3 GHz

Built around several freely available benchmarks for Linux, Linux-Bench is a project spearheaded by Patrick at ServeTheHome to streamline about a dozen of these tests in a single neat package run via a set of three commands using an Ubuntu 11.04 LiveCD. These tests include fluid dynamics used by NASA, ray-tracing, OpenSSL, molecular modeling, and a scalable data structure server for web deployments. We run Linux-Bench and have chosen to report a select few of the tests that rely on CPU and DRAM speed.

All of our benchmark results can also be found in our benchmark engine, Bench.

C-Ray: link

C-Ray is a simple ray-tracing program that focuses almost exclusively on processor performance rather than DRAM access. The test in Linux-Bench renders a heavy complex scene offering a large scalable scenario.

Linux-Bench c-ray 1.1 (Hard)

C-ray, while slowly fading in importance as a benchmark, shows a slight gain here for Kaveri despite the lack of DRAM accesses this benchmark uses. There may however still be some L2 use.

NAMD, Scalable Molecular Dynamics: link

Developed by the Theoretical and Computational Biophysics Group at the University of Illinois at Urbana-Champaign, NAMD is a set of parallel molecular dynamics codes for extreme parallelization up to and beyond 200,000 cores. The reference paper detailing NAMD has over 4000 citations, and our testing runs a small simulation where the calculation steps per unit time is the output vector.

Linux-Bench NAMD Molecular Dynamics

NAMD shows a small benefit for Kaveri here, with all three processors showing a +16% gain minimum over Trinity.

NPB, Fluid Dynamics: link

Aside from LINPACK, there are many other ways to benchmark supercomputers in terms of how effective they are for various types of mathematical processes. The NAS Parallel Benchmarks (NPB) are a set of small programs originally designed for NASA to test their supercomputers in terms of fluid dynamics simulations, useful for airflow reactions and design.

Linux-Bench NPB Fluid Dynamics

Redis: link

Many of the online applications rely on key-value caches and data structure servers to operate. Redis is an open-source, scalable web technology with a strong developer base, but also relies heavily on memory bandwidth as well as CPU performance.

Linux-Bench Redis Memory-Key Store, 1x

Linux-Bench Redis Memory-Key Store, 10x

Linux-Bench Redis Memory-Key Store, 100x

The 2MB of L2 cache, compared to the 4MB of the other parts, hurts Carrizo here.

Performance at 3 GHz: Office Performance at 3 GHz: Legacy
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  • coder111 - Friday, July 15, 2016 - link

    Wow, another Asus A6 user. I still use my K73TA daily. Quite happy with it. Never tried overclocking, but now that you mention it I will.

    How does the cooling hold up? I have had my laptop shutdown several times due to temperature getting too high after heavy APU+dGPU use.

    I just wish there was a way to replace 6550M with something faster...
  • TheinsanegamerN - Friday, July 15, 2016 - link

    Repaste the parts. The paste on that thing is half a decade old.

    Also, undervolt the chips. You can cut a ton of voltage off of the CPU with k10stat.

    If you really want to go DIY, there are those like me that cut a hole in the bottom of the laptop and put a grill over the fan, that lowered temps by about 20C for me.
  • coder111 - Friday, July 15, 2016 - link


    Thanks for ideas! I'm on Linux, so I'll see if there are k10stat alternatives on Linux. I'll definitely repaste the parts. And I'll see if I can do the grill on the bottom as well...

  • coder111 - Friday, July 15, 2016 - link

    Could you post the pics of your grill on the bottom somewhere?

  • TheinsanegamerN - Friday, July 15, 2016 - link

    That laptop is long gone, im afraid. The chassis did not hold up very well to my constant moving.

    There was a forum on notebookreview about doing said mod, but the pictures are no longer available. the waybackmachine might be able to provide pics.
  • TheinsanegamerN - Friday, July 15, 2016 - link

    I had the exact same laptop! I went with an a4 to force the dGPU, since AMD kept screwing up the ability to choose which GPU you wanted to use. 3.2 GHz dual core was amazing.
  • Sushisamurai - Thursday, July 14, 2016 - link

    I like this pseudo-new review format. Very clean, and the shout out to manufacture/companies was a nice touch. I think u should include if the SSD's are MLC or TLC In that brief summary for those who forget.
  • keg504 - Thursday, July 14, 2016 - link

    What does OCCT mean? It doesn't seem to be explained in the article
  • Arnulf - Thursday, July 14, 2016 - link ?
  • keg504 - Friday, July 15, 2016 - link

    Ah, thanks. A cursory search of google gave me many different results for OCCT

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