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Meltdown / Spectre after patch Tests. The slowdown was measured by Intel itself


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Meltdown / Spectre after patch Tests. The slowdown was measured by Intel itself The Meltdown / Specter case, which shifted confidence in the security of modern processors at the beginning of the year 2018. Intel has published its own benchmarks for its Core CPUs, so we can figure out how demanding is the patch for the performance of the system according to the semiconductor giant scenarios. For those who do not know what to say, a brief summary. Just after the New Year 2018, it became clear that most modern processors have a large security vulnerability that allows an attacker to read other process data or even a system's protected memory. Errors were called Meltdown and Specter. The biggest hammer went to Intel, which showed that vulnerability originated in the CPU itself, and..

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Meltdown / Spectre after patch Tests. The slowdown was measured by Intel itself

The Meltdown / Specter case, which shifted confidence in the security of modern processors at the beginning of the year 2018. Intel has published its own benchmarks for its Core CPUs, so we can figure out how demanding is the patch for the performance of the system according to the semiconductor giant scenarios.

For those who do not know what to say, a brief summary. Just after the New Year 2018, it became clear that most modern processors have a large security vulnerability that allows an attacker to read other process data or even a system's protected memory. Errors were called Meltdown and Specter. The biggest hammer went to Intel, which showed that vulnerability originated in the CPU itself, and the software bug fix would probably mean a reduction in performance.

The impact of the patch has already been tested by some editors of the hardware sites (Guru3D, tomshardware, techspot). The measurement shows that the drop of performance will not be so remarkable. Only by SSD benchmarks after applying both the software patch and the updated BIOS was the impact noticeable. In real-life tests (games), however, this did not show much and the performance was limited by only a percentage. This indirectly confirmed Intel's original words, which argued that the performance impact is highly dependent on the system's work scenarios, and that the servers and data centers will be affected most, so home users can be quiet.

Now Intel has released its Skylake to Coffee Lake chips tests on Windows 10 or 7 platforms, including mobile processors. Benchmarks do not confirm catastrophic predictions about a flat 30% reduction in performance, but there is some influence here. Most of these are units per cent, or the reduction will not be at all (and we rarely see an increase, only for completeness). In the worst case, however, it is a non-negligible 21%. This applies to the SYSMark 2014 SE Respiratory on the Skylake CPU with Windows 10 and SSD.

Complete table available on TZ Intel: https://newsroom.intel.com/editorials/intel-security-issue-update-initial-performance-data-results-client-systems/

When averaging the number of individual configurations, it comes out that the Skylake, Windows 7 CPU, and the hard disk drive are the least affected. Considering what we have learned from benchmarks of foreign editors, it makes sense - the impact was most observed on the SSD, and they have just all the remaining combinations in the Intel test. Otherwise, it is an average, not a 4% slowdown.

But we have to warn a few things:

  1. Measured data is only valid for the configurations listed, so it is not excluded that other combinations of CPUs / GPUs / MB / RAMs / OSs may have different results - better and worse
  2. Measured data comes from synthetic benchmarks that serve for relative performance comparison, in real-time operation the difference may be different
  3. The author of the test is Intel, a manufacturer of affected processors, who wants to see its results as positively as possible


Before you make your own conclusion, take it all into consideration. We still appreciate that Intel has dared to publish such numbers. You do not have to believe them, but at least you know what Intel might argue for if there is a word game in the future.



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