Intel CPUs: Upcoming OS updates might bring up to 30 % loss in performance

https://www.theguardian.com/technolo...-security-flaw

and another [slightly more technical :)] https://googleprojectzero.blogspot.c...with-side.html

because of the different ways INTEL and AMD processors handle such things, the risk is pretty theoretical for AMD, much more serious for INTEL at least that is how I read it.. and I'm not a geek I could be wrong...

more light reading: https://securityintelligence.com/cpu...and-leak-data/

.....

There are two different security flaws at play here:

a)
MELTDOWN, which seems to only affect Intel and ARM CPUs and will be fixed shortly, thereby probably causing a system slowdown on these CPUs of presently unknown proportions. This issue is rather easy to exploit, so it needs to be fixed quickly.

b)
SCEPTRE, which is said to affect CPUs of all vendors. From what I have read it is quite hard to exploit, but even harder to fix.

thanks

exploitation I think is dependent on malicious code running on your machine - therefore cloud services are going to be far more vunerable maybe, than individual users [provided they understand security]

interesting blog here: http://blog.erratasec.com/2018/01/so...l#.Wk3j1vkS_cs

some links at end to INTEL and AMD statements amongst others

look what I just got :)

Attachment 119737

https://www.windowscentral.com/micro...cessor-exploit

From what I heard on the Radio today, MELTDOWN affects Intel and SPECTRE affects AMD and ARM.

more on spectre https://www.theverge.com/2018/1/4/16...aws-google-cpu

Quote:

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Originally Posted by handrawn

look what I just got :)

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I don't get this shown yet...
Quickly ran a 3DMark benchmark on all my PCs - one older AMD desktop (FX8350) and an Intel notebook from last year (Intel Core i7-6700HQ) to be able to compare performance before and after the patch. Will report the results back when available.

On the AMD the update is still a no show, but on the Intel it came through this morning.
3DMark "Time Spy" benchmark (Top = pre-patch / bottom = post-patch). Seems to indicate a drop in CPU performance of roundabout 3 percent:

Attachment 119740