Side Channel Vulnerability and newer CPU's

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Hi:

 

I’m looking at either building or purchasing a new Win10 socket 2066, x299 based computer. I got to thinking about side channel variants and whether newer CPUs have less or no problems.

Somewhere I read that the Xeon w-series, for example the w-2145, are indeed affected and need to be patched, however I’m unsure how reliable  that info was

Questions.

Are the newer Core i7 and i9 CPUs any less vulnerable ?

What about the slightly older Xeon w-series. ?

Finally, what my main concern is:  Does patching for the side channel vulnerabilities (bios, micro code or software based) affect performance ?

Thanks, Mike

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https://www.anandtech.com/show/13239/intel-at-hot-chips-2018-showing-the-ankle-of-cascade-lake

Well to answer my own question:  Yes, some processors like the Cascade Lake series have some protection.  The above link pretty well explains it.

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