Samsung’s S4 GPU powering chip Exynos 5 Octa benchmark scores may be rigged: Reports


The reigning smartphone manufacturer Samsung has been caught cheating in benchmark tests according to latest report findings. Samsung is boosting the performance benchmark scores of its recent and best system-on-chip, the Exynos 5 Octa, that has made it a favourite of the reviewers and product evaluators.

Samsung’s S4 GPU powering chip Exynos 5 Octa benchmark scores may be rigged-Reports-global-annal-bhavesh-kumar-technology-gadgets

“Oh hell Samsung, shame on you!” was said by a Beyond3D forum member in one of the site’s forums last month.

This forum member is from Luxembourg and goes by the handle of Nebuchadnezzar. He had been conducting tests on the Samsung Exynos 5 Octa when he discovered that while he thought he was running the chip’s GPU at 532MHz, it had only achieved that clock speed on only two benchmarks he used for testing: AnTuTu and GLBenchmark. However it remained running at 480MHz for all other apps which is known to be a much better speed for testing battery-life.

Samsung’s S4 GPU powering chip Exynos 5 Octa benchmark scores may be rigged-Reports-global-annal-bhavesh-kumar-technology-gadgets2

The Samsung chip Exynos 5 Octa, has got its name owing to its architecture that comprises of four high-performance ARM Cortex-A15 cores and four low-power ARM Cortex-A7 cores, all combined together in a single 28-nanometer die. The Exynos 5 Octa is available in two versions: the first one being 5410, which boasts of an Imagination Technologies PowerVR SGX544MP3 GPU, and the other one being 5420, which is based on an ARM Mali-T628 MP6 GPU. Nebuchadnezzar was however testing its 5410 version.

Nebuchadnezzar’s discovery was told to two techies of deep-tech site AnandTech, Anand Lal Shimpi and Brian Klug, and since then they both own the international version of the Samsung Galaxy S 4 powered by an Exynos 5410, with an aim to see if they could replicate his findings.

Both of them however succeeded in their determination but wait here are also a few additions and clarifications that they made enroute. For example, the GLBenchmark v.2.5.1 did run at 532MHz, but in testing of its latest v.2.7.0 manifestation, the GLBenchmark having been included into the GFXBench together with DXBenchmark was run at 480MHz.

Even though, Samsung hasn’t published its GPU megahertzage, but Shimpi’s and Klug’s sources have told them that it runs at 480MHz – which they have also discovered to be its clock rate while running any games, “even the most demanding titles.” But the GPUs clock speed came to be 532MHz when it was run on GLBenchmark 2.5.1, AnTuTu, or Quadrant like benchmarks that is generally used by reviewers and product testers to rate such products.

Source: Theregister

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