How to Benchmark an Intel CPU

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Introduction: How to Benchmark an Intel CPU

Have you ever wanted a good comparative method to test the actual speed of your CPU? You can measure its physical speed in GHz, but it won't give you much idea as to how fast it can actually solve problems. For example, you can clock a Pentium 4 at 4GHz, but an i7 at 1GHz will probably be still a lot faster. There are various other benchmarks, like CPU Marks , ok for comparing your CPU to others, but they are otherwise meaningless, and require payware to test your own configuration. If you want to benchmark you CPU, it is best to use GFLOPS (Giga [Billion] FLoating-point Operations per Seconds). It is what all supercomputers will use to test their speed and a very good measure of the processors true speed.

NOTE: This only works on Intel CPUs. You can probably find one for AMD if you google it, but as I don't have any,  haven't really looked. Only thing I could find was a linux version you have to compile yourself.

Step 1: Get Linpack

First step is to get Linkpack. This is very straightforward, simply download the correct version from below:
[Linux ]
[Windows ]
[Mac ]

Download it and unzip it and save it to a memorable location.

Step 2: Using Linpack

Once downloaded, open the "benchmarks" folder, then the "linpack" folder. Run linpack_xeon64 (or 32 if you have an older 32-bit cpu).

 You should now have a command prompt/terminal window open. Press return once so it says "Number of equations to solve". Input a large number like 5000, and hit enter. Then, for the leading dimensions for array, enter a larger number, for example, 10000. Note: you may want to run less equations for older CPUs, otherwise they might take over a minute just to solve one! Next, enter about 200 trials, and then the amount of ram for it to use (in kb). You will want to change this according to how much ram you have free, I gave it 100000, which is just under 1GB. If done correctly, it should then start giving you benchmarks. I have found mine varies quite a bit, but I have managed to get up to 43GFLOPS on Ubuntu with it overclocked to 3.3GHz. Feel free to post your benchmarks in the comments!

Step 3: Benchmark Your Mobile Device!

You can benchmark your mobile device too!
[Android ]
iOS: [US ] [UK ]

Please note, the speeds here are in megaflops, not gigaflops. Divide them by 1024 to get the equivalent speed in gigaflops to compare to your computer.

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    user

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    29 Comments

    PlayStaion 4 runs at 1.8 TERAFlops, so all your PC's are pure junk. Compare the cost

    PS4 $300, = Intel CPU alone cost more and not even close

    My RX 480 capable of 5 tflops says otherwise console boy

    Uhh not so fast. That's your GPU Floating point operation, not CPU. The PS4 CPU runs at 102.4 GFLOPS, behind the 112GFLOPS of the XBOX One.

    1.8 TFLOPS for a GPU is pretty weak and considered merely "entry level" in the PC Graphics market. In fact, a mid-level GTX 960 runs at 2.3 TFLOPS, while the GTX 1080 at 9 TFLOPS.

    Makes your PS4 sound pretty useless now.

    i should get a macbook or a xbox 360 elite or slime

    underhood ps4 usual x86 cpu from amd. 1.8TF it is theoretically performance GPU

    user

    This doesn't work for me. I downloaded from your link and tried to run it. The command window just sits there, blank, forever. i7-4770k

    user

    Solved for myself. One of the DLLs that comes with Intel optimized Linpack needs to be moved from the lib folder to the application folder.

    I just use intel burn test it has linpack output. I got a 123 gflops on my i7 5820k overclocked to 4.5ghz @ 2.999v

    How do I get the program to tell me the results? It just closes after it is done... or does it not give you the average or anything?

    I ran linpack on my HP Z230 workstation: 64-bit Xeon CPU @ 3.5 GHz; 16 GB DDR3 ECC DRAM; running on a 250 GB SSD, which is the OS & programs drive. I got an average score of 70 GFlops, maximum of 76 GFlops. That makes it faster than a Cray 2, which was rated at 1.9 GFlops in 1985 and was fastest until 1990. Wow!