Some days ago the Raspberry PI 3 arrived home as I had ordered one when I heard of its launch. It's certainly a faster PI than the PI 2 due to the ARM Cortex-A53 cores. More or less the +50% performance ratio is true, depending on the application of course. There are some other additions as well like WiFi and bluetooth.
The Raspberry PI 3 |
A closer look of the PI 3 |
As usual, I am providing some nbench execution results. These are consistent with the +50% performance claim. For those interested I had published nbench results on the PI 2 in the past.
BYTEmark* Native Mode Benchmark ver. 2 (10/95) Index-split by Andrew D. Balsa (11/97) Linux/Unix* port by Uwe F. Mayer (12/96,11/97) TEST : Iterations/sec. : Old Index : New Index : : Pentium 90* : AMD K6/233* --------------------:------------------:-------------:------------ NUMERIC SORT : 654.04 : 16.77 : 5.51 STRING SORT : 72.459 : 32.38 : 5.01 BITFIELD : 1.9972e+08 : 34.26 : 7.16 FP EMULATION : 134.28 : 64.44 : 14.87 FOURIER : 6677.3 : 7.59 : 4.27 ASSIGNMENT : 10.381 : 39.50 : 10.25 IDEA : 2740.7 : 41.92 : 12.45 HUFFMAN : 1008.9 : 27.98 : 8.93 NEURAL NET : 9.8057 : 15.75 : 6.63 LU DECOMPOSITION : 365.38 : 18.93 : 13.67 ==========================ORIGINAL BYTEMARK RESULTS========================== INTEGER INDEX : 34.272 FLOATING-POINT INDEX: 13.131 Baseline (MSDOS*) : Pentium* 90, 256 KB L2-cache, Watcom* compiler 10.0 ==============================LINUX DATA BELOW=============================== CPU : 4 CPU ARMv7 Processor rev 4 (v7l) L2 Cache : OS : Linux 4.1.18-v7+ C compiler : gcc-4.9 libc : libc-2.19.so MEMORY INDEX : 7.162 INTEGER INDEX : 9.769 FLOATING-POINT INDEX: 7.283 Baseline (LINUX) : AMD K6/233*, 512 KB L2-cache, gcc 2.7.2.3, libc-5.4.38 * Trademarks are property of their respective holder.
As I crossed some reports on temperature issues of PI 3 I wanted to execute some experiments on power consumption of the PI 3. I used a power meter on which I plugged the power supply unit feeding the PI. I run a few experiments and I got the following power consumption ratings:
PI running state | Power consumption |
---|---|
Idle | 1.4W |
Single threaded benchmark | 2.2W |
Multithreaded benchmark | 4.0W |
After running "poweroff" | 0.5W |
So, for my case it doesn't seem consume to much power. However, a comparison with the PI 2 should be performed in order to have a better picture.
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