From: schornak@nospicedham.web.de   
      
   Bonita Montero wrote:   
      
      
   >> In other words: iNTEL machines will no longer win benchmarks...   
   >   
   > Most benchmarks don't make kernel-transitions with   
   > a frequency that the patch has na noticeably impact.   
      
      
   If you read the posting I replied to (and the linked pages!),   
   you will know that iNTEL processors are vulnerable to Spectre   
   and Meltdown attacks, while AMD processors are vulnerable for   
   Spectre type 1 and 2 attacks. Hence, major OS workarounds for   
   closing this safety gap will reduce execution speed for iNTEL   
   processors dramatically, while workarounds for AMD will cause   
   less, quite moderate speed loss. If you take a look at recent   
   benchmarks, iNTEL bought the higher processor speed with less   
   secure prediction logic. This advantage will be gone with the   
   first security updates for all major OS'es, so iNTEL machines   
   will fall behind AMD. (The slowdown is somewhere in the range   
   between 10 and 50 percent, depending on hardware and OS.) The   
   speed loss affects all iNTEL machines capable to perform spe-   
   culative execution. As the OS does not 'know' where malicious   
   code might be injected, it has to provide a really fool proof   
   woraround for any possible attack (which effectively switches   
   speculative execution off).   
      
      
   Greetings from Augsburg   
      
   Bernhard Schornak   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)