Let’s compare some cpu ;)

When I bought Samsung Chromebook friend started “nbench” on it. So I did same on my conference laptop. None of devices won…

Idea of testing cpu power was sitting somewhere at back of my head and finally I decided to just run one simple command available on nearly every GNU/Linux based system: “openssl speed”. Sure, on some systems it will use hardware accelerators, on others (or not) some options enabled to get more speed (like ARM assembly version which is not enabled in Debian/Ubuntu systems). But it is something what anyone can run at home.

Table may be hard to decipher so I also give it as Google Docs. It also has few more devices listed and whole tables (one below is for 8192 size samples).

Devices in table are:

  • my Intel Core i7-2600K desktop
  • my Intel U7300 (ultra low voltage) conference laptop
  • Exynos5 Dual powered Samsung ARM Chromebook
  • Exynos4 Dual powered Tizen development platform (got rid of it today)
  • i.mx515 powered Efika MX Smartbook
  • Beaglebone with AM335x cpu
  • Sheevaplug (as only armv5te device which can compare with other entries)

Devices were running different versions of OpenSSL under different systems. It is listed in Google Docs document.

CPUCore i7U7300Exynos 5250Exynos 4210i.mx515AM335xFeroceon 88FR131
Architecturex86-64x86-64armv7a (a15)armv7a (a9)armv7a (a8)armv7a (a8)armv5te
OpenSSL version1.0.1c1.0.1c1.0.1c1.0.0f1.0.1a1.0.0i1.0.0d
des cbc737032719137811212991496686018829
des ede32809110578141837806552630053130
seed cbc78204311813900224361176501167113087
rc2 cbc4432713839236911549410897739310699
blowfish cbc133455520044947137540235361565420584
cast cbc118852491625532631738228481529820590
aes-128 cbc127378959556536022386164771087611697
aes-192 cbc1061418100255973186531391292219968
aes-256 cbc904876914848564164191209179818677
aes-128 ige122085430186321822126155901046911219
aes-192 ige1021333610754269186961335589049647
aes-256 ige875143100147636163071163577358433

Most interesting columns are U7300 and Exynos 5250 ones — 3 years old laptop which I bought for conferences compared to Chromebook. Looks like for next conferences/events I will rather go with Chromebook not UL30A. This will give me one or two hours of battery life less but it is much lighter device at same time. But have to test it first for few days to check is it comfortable enough for daily use.

6 thoughts on “Let’s compare some cpu ;)

  1. av500

    your “wall of numbers” makes it hard to see anything, at least right align the numbers and drop the fractions

  2. Steve

    This is really interesting, thanks for posting it. How does I/O compare across these systems? Memory/disk/network

    1. Marcin Juszkiewicz Post author

      This is hard to compare I/O in good way. Each device has other internal storage. Testing one SD card or USB drive would not test it too much. Similar with network — sheevaplug has 1GbE which can do 800-900Mbps which is far more then EfikaMX Smartbook can do over WiFi etc.

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