Lenovo K800 Intel Medfield Z2460 SunSpider & Pi Benchmarks

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18 Jan, 2012 5:35 am

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We ran the sunspider benchmark on the Lenovo K800 Sunspider which simulates real-world usage of the JavaScript on various websites. It generates a tag cloud, and also tests encryption and decompression capabilities on the browser. It calculates the results in terms of ms, so lower scores are better in this case.

Anand from Anandtech asked Intel where its SunSpider and BrowserMark performance advantages came from, especially considering we’ve typically only seen huge gains with new browsers and not new SoCs.

Their response pointed to a bunch of factors, but one stand out issue was the A9 has a great execution core but seems to be more limited on the memory interface. Atom can support far more outstanding misses in L2 than the Cortex A9, which chokes bandwidth to the processor for anything not already in the L2 cache. This may be one of the reasons why we’ve never been able to get really high bandwidth numbers out of A9 based SoCs. It’s probably safe to assume that things will be different with the Cortex A15, but for now it’s little things like this that give Medfield a performance advantage.

If you would like to check out the SunSpider Benchmarking video, here it is:

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We also ran the Pi Benchmarks which calculates the mathematical constant, Pi. The program can also be used to test the stability of a certain overclock speed. If a computer is able to calculate pi to the 32 millionth place after the decimal without mistake, it is considered to be moderately stable in terms of RAM and CPU. The K800 was slower than the the Samsung Galaxy SII but the values kept changing every time we ran it so that test.

If you would like to check out the Pi benchmarking video we’ve got it here for you below:

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