How do you test for Spectre/Meltdown vulnerability? In what CPU will it be fixed at hardware level?

oblongpolygon

Weaksauce
Joined
Sep 4, 2017
Messages
119
Two questions:
  1. How do you test or check for Spectre / Meltdown vulnerability?
  2. Do we know, yet, in what CPU these will be fixed at hardware level? So will 9th generation Intel CPU's be "immune" for example?
I ask the second question because it seems like new "variants" of the above vulnerabilities are being (or have been) discovered, so... and with each new patch, I understand we can expect further slowdown.

So, the cumulative slowdown of patching all the variants could be in the 15% to 30% range.. or so I'm reading / heading.

If the slowdown is going to be that high, I'm just going to upgrade the CPU when a CPU, which isn't vulnerable, becomes available.

(Of course, I understand that vulnerabilities for that later CPU could soon be discovered, and then we start all over again.)

(I have an 8th generation Intel CPU currently.)
 
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the_real_7

[H]ard|Gawd
Joined
Sep 10, 2007
Messages
1,370
Theres not going to be a cpu that has a hardware fix that doesnt get a perfomance hit for years , problem is they build 3 generations ahead to keep up with the curve. Why do you really think every CPU cycle we only get 10 to 15 percent improvements a year. The intel CPU as we know it has to be built from the ground up becuase this was a main internal part of there CPU and most for the part.
 

dvsman

2[H]4U
Joined
Dec 2, 2009
Messages
3,628
This was the main reason I decided to do an AMD build to replace my aging Intel box. I wanted to keep at least one of each but ...

While people are saying current AMD is still not as fast as current Intel - they are also forgetting that AMD (by quirk of design) is not as vulnerable on a hardware level as Intel is and won't require as much patching AFAIK. And since Intel is not going to be redesigning their entire architecture any time soon - that weakness is likely to persist for a few more generations at least.

If and when Intel comes back to parity on cores, "patched" performance and price - I'll give them another go but at the moment, it looks like it's going to be awhile.
 
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